Meridian by MioDio
payment-ready until 2026-11-12
Meridian is a read-only x402 API an agent calls before it signs or pays.
Compare: all sanctions screening APIs
Call it x402 v2
x402 v2
- Base URL
- https://workers.miodiollc.com
- Payment
- x402 v2, header channel
$ curl -i 'https://workers.miodiollc.com/v1/lido/exit-risk' An unpaid request returns HTTP 402 with the payment terms. Sign a payment authorization, then retry with the PAYMENT-SIGNATURE header.
Endpoints 12 paid routes on workers.miodiollc.com
POST/v1/drift Base$0.005since 11-05
GET/v1/lido/exit-risk Base$0.005since 11-05
GET/v1/passport-sanctions/0x0000000000000000000000000000000000000001 Base$0.02since 11-05
GET/v1/passport/0x0000000000000000000000000000000000000001 Base$0.02since 11-05
POST/v1/payment-check Base$0.005since 11-05
GET/v1/recipient/0x0000000000000000000000000000000000000001 Base$0.005since 11-05
GET/v1/risk/0xBA9424d650A4F5c80a0dA641254d1AcCE2A37057 Base$0.005since 09-21
GET/v1/sanctions/0x0000000000000000000000000000000000000001 Base$0.005since 11-05
4 more in Example 402 response
Prices as captured in the 402 response: median $0.005 across the 12 endpoints.
Example 402 response
Endpoints and prices
| Method | Path | Description | Price | Network | Asset | 402 channel | Captured |
|---|---|---|---|---|---|---|---|
| POST | / | Pre-sign check: agents call Meridian before they sign. MioDio Meridian signature decoder (~$0.005 USDC Exact on Base). With intent: match / drift / cannot_verify vs the unsigned tx or EIP-712 payload. Without intent: decode Permit, Permit2, DAI, CoW, Seaport or EIP-7702 and return risk_flags. Unknown primaryType is UNDECODED_CAUTION. A match is not a guarantee. Errors: 400 invalid_body or unsupported_chain, 402 payment required. MioDio x402 DeFi. Terms: https://meridian.miodiollc.com/terms | $0.005 | Base | USDC | header | since 11-05 |
| GET | / | Pre-sign check: agents call Meridian before they sign. MioDio Meridian Lido exit-risk card: stETH/ETH Curve peg, withdrawal-queue ETA and exit liquidity for a stETH amount (~$0.005 USDC Exact on Base). Errors: 400 amount_required or invalid_amount, 402 payment required. An upstream RPC failure is a charged 200 with status partial/error. Unexpected Worker 5xx is not charged. MioDio x402 DeFi. Terms: https://meridian.miodiollc.com/terms | $0.005 | Base | USDC | header | since 11-05 |
| GET | / | Pre-sign check: agents call Meridian before they sign. MioDio Meridian bundle: deep passport plus OFAC SDN exact-match (~$0.02 USDC Exact on Base). Informational only. Errors: 400 invalid_address, unsupported_chain or invalid_amount, 402 payment required, 503 sanctions_list_unavailable when the SDN list cannot be loaded (not settled). Passport RPC failure is a charged 200 partial. Unexpected Worker 5xx is not charged. MioDio x402 DeFi. Terms: https://meridian.miodiollc.com/terms | $0.02 | Base | USDC | header | since 11-05 |
| GET | / | Pre-sign check: agents call Meridian before they sign. MioDio Meridian deep passport: one decision card joining Aave v3, Lido exit and optional ERC-4626 vault reads for an EVM address (~$0.02 USDC Exact on Base). Errors: 400 invalid_address, unsupported_chain or invalid_amount, 402 payment required. An upstream RPC failure is a charged 200 with status partial/error. Unexpected Worker 5xx is not charged. MioDio x402 DeFi. Terms: https://meridian.miodiollc.com/terms | $0.02 | Base | USDC | header | since 11-05 |
| POST | / | Pre-sign check: agents call Meridian before they sign. MioDio Meridian payment-check: on-chain read of a Base USDC Exact authorization or Transfer (~$0.005 USDC Exact). Reports nonce used, matching transfers in a ≤120 minute window, and confirmations. Informational. 503 and not settled if every read fails. Never signs or moves funds. Errors: 400 invalid_body, 402 payment required, 503 upstream_unavailable. MioDio x402 DeFi. Terms: https://meridian.miodiollc.com/terms | $0.005 | Base | USDC | header | since 11-05 |
| GET | / | Pre-sign check: agents call Meridian before they sign. Recipient readiness: Base vs Ethereum code, EIP-7702 vs known-wallet allowlist (unknown if unlisted; never safe), USDC freeze Base+Eth, USDT freeze Eth only, OFAC exact match, burn/token flags, optional address-poisoning (lookalike) with counterparties/from (~$0.005 Exact). Not advice. 400 invalid_address/unsupported_chain/query_too_long; unpaid 402; partial 200; both-chain fail 503 not settled. Terms: https://meridian.miodiollc.com/terms | $0.005 | Base | USDC | header | since 11-05 |
| GET | / | Pre-sign check: agents call Meridian before they sign. MioDio Meridian Aave v3 risk card for an EVM address: health factor, collateral, debt and liquidation distance (~$0.005 USDC Exact on Base). Errors: 400 invalid_address or unsupported_chain (chain must be base or ethereum), 402 payment required. An upstream RPC failure is a charged 200 with status partial/error. Unexpected Worker 5xx is not charged. MioDio x402 DeFi. Terms: https://meridian.miodiollc.com/terms | $0.005 | Base | USDC | header | since 09-21 |
| GET | / | Pre-sign check: agents call Meridian before they sign. MioDio Meridian OFAC SDN screen: exact match of one digital-currency address against public SDN Digital Currency Address entries (~$0.005 USDC Exact on Base). Informational only. Errors: 400 invalid_address or unsupported_chain, 402 payment required, 503 sanctions_list_unavailable when the SDN index or meta is missing (not settled). Unexpected Worker 5xx is not charged. MioDio x402 DeFi. Terms: https://meridian.miodiollc.com/terms | $0.005 | Base | USDC | header | since 11-05 |
| POST | / | Pre-sign check: agents call Meridian before they sign. MioDio Meridian OFAC SDN batch screen: exact match of 1-50 digital-currency addresses against public SDN entries (~$0.10 USDC Exact on Base). Informational only. Errors: 400 invalid_body, invalid_address or unsupported_chain, 402 payment required, 503 sanctions_list_unavailable when the SDN list is missing (not settled). Unexpected Worker 5xx is not charged. MioDio x402 DeFi. Terms: https://meridian.miodiollc.com/terms | $0.10 | Base | USDC | header | since 11-05 |
| POST | / | Pre-sign check: agents call Meridian before they sign. MioDio Meridian transaction simulation: dry-run of an unsigned tx on Base/Ethereum (~$0.01 USDC Exact on Base). Success or revert, gas, balances, approvals. Simulation is a point-in-time dry run, not a guarantee. Never signs or moves funds. Errors: 400 invalid_body or unsupported_chain, 402 payment required. RPC fail is a charged 200 partial. Unexpected Worker 5xx is not charged. MioDio x402 DeFi. Terms: https://meridian.miodiollc.com/terms | $0.01 | Base | USDC | header | since 11-05 |
| GET | / | Pre-sign check: agents call Meridian before they sign. MioDio Meridian ERC-4626 vault risk card: share price, drawdown, APY lookback and idle cash for one vault (~$0.005 USDC Exact on Base). Errors: 400 invalid_address, unsupported_chain or invalid_amount, 402 payment required. An upstream RPC failure is a charged 200 with status partial/error. Unexpected Worker 5xx is not charged. MioDio x402 DeFi. Terms: https://meridian.miodiollc.com/terms | $0.005 | Base | USDC | header | since 09-21 |
| GET | / | Pre-sign check: agents call Meridian before they sign. MioDio Meridian x402 seller preflight (~$0.005 USDC Exact on Base). Informational, not advice. 400 invalid_url after pay (no settle); 402 unpaid before validation. Unreachable (DNS, timeout, connection refused, TLS failure): 503 upstream_unavailable, not charged. Any HTTP response from the target (500, 404, 302, 200 with no 402, oversize body) is a charged 200 with status partial or parsed result. Terms: https://meridian.miodiollc.com/terms | $0.005 | Base | USDC | header | since 11-05 |
Payment evidence
402 payload captured at . Check evidence JSON · Measurement methodology.
First of 12 payloads captured by the monitor.
206 lines, scroll inside
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x4DA1ED782BD61BaE9AdD5a5CaBbCf32f767f8d7F",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 120
}
],
"resource": {
"url": "https://workers.miodiollc.com/v1/sanctions/0x0000000000000000000000000000000000000001",
"tags": [
"ofac",
"sdn",
"sanctions"
],
"mimeType": "application/json",
"description": "Pre-sign check: agents call Meridian before they sign. MioDio Meridian OFAC SDN screen: exact match of one digital-currency address against public SDN Digital Currency Address entries (~$0.005 USDC Exact on Base). Informational only. Errors: 400 invalid_address or unsupported_chain, 402 payment required, 503 sanctions_list_unavailable when the SDN index or meta is missing (not settled). Unexpected Worker 5xx is not charged. MioDio x402 DeFi. Terms: https://meridian.miodiollc.com/terms",
"serviceName": "MioDio Meridian SDN Screen"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"pathParams": {
"address": "0x0000000000000000000000000000000000000001"
},
"queryParams": {
"chain": "ETH"
}
},
"output": {
"type": "json",
"example": {
"card": "sanctions_screen",
"chain": "ETH",
"match": false,
"address": "0x0000000000000000000000000000000000000001",
"product": "mio_dio_defi_risk_passport",
"sources": [
"OFAC SDN"
],
"version": "0.9.0",
"warnings": [],
"disclaimer": "Informational screening against the public OFAC SDN list only. Not legal or compliance advice and not a substitute for a compliance program.",
"sdn_entries": [],
"list_version": "10/14/2026",
"no_match_note": "No match does not mean the wallet is clean.",
"freshness_hours": 1.2,
"list_updated_at": "2026-10-15T06:15:00.000Z"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"pathParams": {
"type": "object",
"required": [
"address"
],
"properties": {
"address": {
"type": "string",
"description": "Call before you sign. Digital-currency address to exact-match against OFAC SDN Digital Currency Address entries"
}
}
},
"queryParams": {
"type": "object",
"properties": {
"chain": {
"type": "string",
"description": "Optional OFAC Digital Currency chain hint (ETH, XBT, USDT, TRX, …). ethereum/base map to ETH. Token-only tags (USDT, USDC, tether) match by address-format family and do not hide native-chain listings (TRX-listed TRON still hits chain=USDT). Bech32 is case-insensitive. Omitted = exact address match across listed chains. Never guessed as risky."
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"address",
"chain",
"match",
"sdn_entries",
"list_version",
"list_updated_at",
"freshness_hours",
"sources",
"disclaimer"
],
"properties": {
"card": {
"type": "string",
"const": "sanctions_screen"
},
"chain": {
"type": [
"string",
"null"
]
},
"match": {
"type": "boolean"
},
"address": {
"type": "string"
},
"product": {
"type": "string",
"const": "mio_dio_defi_risk_passport"
},
"sources": {
"type": "array",
"items": {
"type": "string"
}
},
"version": {
"type": "string"
},
"warnings": {
"type": "array",
"items": {
"type": "string"
}
},
"disclaimer": {
"type": "string"
},
"sdn_entries": {
"type": "array"
},
"list_version": {
"type": [
"string",
"null"
]
},
"no_match_note": {
"type": "string"
},
"freshness_hours": {
"type": [
"number",
"null"
]
},
"list_updated_at": {
"type": [
"string",
"null"
]
}
}
}
}
}
}
},
"routeTemplate": "/v1/sanctions/:address"
}
},
"x402Version": 2
} Other captured 402 responses (11)
Captured payload 2 of 12
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x4DA1ED782BD61BaE9AdD5a5CaBbCf32f767f8d7F",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 120
}
],
"resource": {
"url": "https://workers.miodiollc.com/v1/x402-preflight",
"tags": [
"x402",
"preflight",
"payto"
],
"mimeType": "application/json",
"description": "Pre-sign check: agents call Meridian before they sign. MioDio Meridian x402 seller preflight (~$0.005 USDC Exact on Base). Informational, not advice. 400 invalid_url after pay (no settle); 402 unpaid before validation. Unreachable (DNS, timeout, connection refused, TLS failure): 503 upstream_unavailable, not charged. Any HTTP response from the target (500, 404, 302, 200 with no 402, oversize body) is a charged 200 with status partial or parsed result. Terms: https://meridian.miodiollc.com/terms",
"serviceName": "MioDio Meridian x402 Preflight"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"url": "https://www.example.com/"
}
},
"output": {
"type": "json",
"example": {
"url": "https://www.example.com/",
"card": "x402_preflight",
"http": {
"status": 402,
"location": null,
"redirected": false
},
"x402": {
"valid": true,
"version": 2,
"resource": {
"url": "https://www.example.com/"
}
},
"as_of": "2026-11-04T15:00:00.000Z",
"flags": [
"pay_to_eoa"
],
"bazaar": {
"note": "Bazaar listing omitted: public keyless discovery did not return a filtered listing.",
"listing": null,
"looked_up": false
},
"status": "ok",
"accepts": [
{
"ofac": {
"match": false,
"sdn_entries": [],
"list_version": "sdn_example",
"list_updated_at": "2026-11-04T00:00:00.000Z"
},
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"pay_to": "0x0000000000000000000000000000000000000001",
"scheme": "exact",
"amount_usd": "0.005",
"asset_kind": "usdc",
"description": "Example ~$0.005 USDC Exact",
"pay_to_type": {
"kind": "eoa",
"delegate": null
},
"network_form": "caip2",
"amount_atomic": "5000",
"network_caip2": "eip155:8453",
"network_claimed": "eip155:8453",
"network_as_claimed": true,
"amount_vs_description": "match",
"asset_matches_network": true,
"description_price_usd": "0.005"
}
],
"product": "mio_dio_defi_risk_passport",
"version": "0.9.0",
"disclaimer": "informational, not advice"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string",
"description": "Absolute https URL (port 443) of the unpaid x402 resource to inspect, ≤ 2048 characters. Fetched once; never paid. Unpaid probes without url still 402."
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"product",
"card",
"version",
"status",
"as_of",
"url",
"disclaimer",
"http",
"x402",
"accepts",
"bazaar",
"flags"
],
"properties": {
"url": {
"type": "string"
},
"card": {
"type": "string",
"const": "x402_preflight"
},
"http": {
"type": "object",
"properties": {
"status": {
"type": [
"integer",
"null"
]
},
"location": {
"type": [
"object",
"null"
],
"properties": {
"untrusted_url": {
"type": "string"
}
}
},
"redirected": {
"type": "boolean"
}
}
},
"x402": {
"type": "object",
"properties": {
"valid": {
"type": "boolean"
},
"version": {
"enum": [
1,
2,
null
],
"type": [
"integer",
"null"
]
},
"resource": {
"type": [
"object",
"null"
],
"properties": {
"url": {
"type": "string"
}
}
}
}
},
"as_of": {
"type": "string"
},
"flags": {
"type": "array",
"items": {
"type": "string"
}
},
"bazaar": {
"type": "object",
"properties": {
"note": {
"type": "string"
},
"listing": {
"type": [
"object",
"null"
]
},
"looked_up": {
"type": "boolean"
}
}
},
"errors": {
"type": "array",
"items": {
"type": "string"
}
},
"status": {
"enum": [
"ok",
"partial"
],
"type": "string"
},
"accepts": {
"type": "array",
"items": {
"type": "object",
"properties": {
"ofac": {
"type": "object",
"properties": {
"match": {
"type": [
"boolean",
"null"
]
},
"sdn_entries": {
"type": [
"array",
"null"
],
"items": {
"type": "object",
"properties": {
"name": {
"type": "string"
},
"program": {
"type": "string"
},
"list_date": {
"type": "string"
}
}
}
},
"list_version": {
"type": [
"string",
"null"
]
},
"list_updated_at": {
"type": [
"string",
"null"
]
}
}
},
"asset": {
"type": [
"string",
"null"
]
},
"pay_to": {
"type": [
"string",
"null"
]
},
"scheme": {
"type": [
"string",
"null"
]
},
"amount_usd": {
"type": [
"string",
"null"
]
},
"asset_kind": {
"enum": [
"usdc",
"unknown_asset"
],
"type": "string"
},
"description": {
"type": [
"string",
"null"
]
},
"pay_to_type": {
"type": "object",
"properties": {
"kind": {
"enum": [
"eoa",
"contract",
"eip7702_delegated"
],
"type": [
"string",
"null"
]
},
"delegate": {
"type": [
"string",
"null"
]
}
}
},
"network_form": {
"enum": [
"caip2",
"alias",
"unknown"
],
"type": "string"
},
"amount_atomic": {
"type": [
"string",
"null"
]
},
"network_caip2": {
"type": [
"string",
"null"
]
},
"network_claimed": {
"type": [
"string",
"null"
]
},
"network_as_claimed": {
"type": [
"boolean",
"null"
]
},
"amount_vs_description": {
"enum": [
"match",
"mismatch",
"no_price_in_description"
],
"type": "string"
},
"asset_matches_network": {
"type": [
"boolean",
"null"
]
},
"description_price_usd": {
"type": [
"string",
"null"
]
}
}
}
},
"product": {
"type": "string",
"const": "mio_dio_defi_risk_passport"
},
"version": {
"type": "string"
},
"disclaimer": {
"type": "string"
}
}
}
}
}
}
},
"routeTemplate": "/v1/x402-preflight"
}
},
"x402Version": 2
}Captured payload 3 of 12
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x4DA1ED782BD61BaE9AdD5a5CaBbCf32f767f8d7F",
"amount": "100000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 120
}
],
"resource": {
"url": "https://workers.miodiollc.com/v1/sanctions/batch",
"tags": [
"ofac",
"sdn",
"batch"
],
"mimeType": "application/json",
"description": "Pre-sign check: agents call Meridian before they sign. MioDio Meridian OFAC SDN batch screen: exact match of 1-50 digital-currency addresses against public SDN entries (~$0.10 USDC Exact on Base). Informational only. Errors: 400 invalid_body, invalid_address or unsupported_chain, 402 payment required, 503 sanctions_list_unavailable when the SDN list is missing (not settled). Unexpected Worker 5xx is not charged. MioDio x402 DeFi. Terms: https://meridian.miodiollc.com/terms",
"serviceName": "MioDio Meridian SDN Batch"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"chain": "ETH",
"addresses": [
"0x0000000000000000000000000000000000000001"
]
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"card": "sanctions_batch",
"count": 1,
"product": "mio_dio_defi_risk_passport",
"results": [
{
"card": "sanctions_screen",
"chain": "ETH",
"match": false,
"address": "0x0000000000000000000000000000000000000001",
"product": "mio_dio_defi_risk_passport",
"sources": [
"OFAC SDN"
],
"version": "0.9.0",
"warnings": [],
"disclaimer": "Informational screening against the public OFAC SDN list only. Not legal or compliance advice and not a substitute for a compliance program.",
"sdn_entries": [],
"list_version": "10/14/2026",
"no_match_note": "No match does not mean the wallet is clean.",
"freshness_hours": 1.2,
"list_updated_at": "2026-10-15T06:15:00.000Z"
}
],
"sources": [
"OFAC SDN"
],
"version": "0.9.0",
"warnings": [],
"disclaimer": "Informational screening against the public OFAC SDN list only. Not legal or compliance advice and not a substitute for a compliance program.",
"list_version": "10/14/2026",
"no_match_note": "No match does not mean the wallet is clean.",
"freshness_hours": 1.2,
"list_updated_at": "2026-10-15T06:15:00.000Z"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"required": [
"addresses"
],
"properties": {
"chain": {
"type": "string",
"description": "Optional chain hint applied to every address in the batch"
},
"addresses": {
"type": "array",
"items": {
"type": "string"
},
"maxItems": 50,
"description": "1–50 digital-currency addresses (JSON body)"
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"results",
"disclaimer"
],
"properties": {
"card": {
"type": "string",
"const": "sanctions_batch"
},
"count": {
"type": "number"
},
"product": {
"type": "string",
"const": "mio_dio_defi_risk_passport"
},
"results": {
"type": "array"
},
"disclaimer": {
"type": "string"
},
"no_match_note": {
"type": "string"
}
}
}
}
}
}
},
"routeTemplate": "/v1/sanctions/batch"
}
},
"x402Version": 2
}Captured payload 4 of 12
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x4DA1ED782BD61BaE9AdD5a5CaBbCf32f767f8d7F",
"amount": "20000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 120
}
],
"resource": {
"url": "https://workers.miodiollc.com/v1/passport-sanctions/0x0000000000000000000000000000000000000001",
"tags": [
"ofac",
"sdn",
"passport"
],
"mimeType": "application/json",
"description": "Pre-sign check: agents call Meridian before they sign. MioDio Meridian bundle: deep passport plus OFAC SDN exact-match (~$0.02 USDC Exact on Base). Informational only. Errors: 400 invalid_address, unsupported_chain or invalid_amount, 402 payment required, 503 sanctions_list_unavailable when the SDN list cannot be loaded (not settled). Passport RPC failure is a charged 200 partial. Unexpected Worker 5xx is not charged. MioDio x402 DeFi. Terms: https://meridian.miodiollc.com/terms",
"serviceName": "MioDio Meridian SDN Bundle"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"pathParams": {
"address": "0x0000000000000000000000000000000000000001"
},
"queryParams": {
"chain": "base",
"lido_amount": "32"
}
},
"output": {
"type": "json",
"example": {
"card": "passport_sanctions",
"chain": "base",
"match": false,
"address": "0x0000000000000000000000000000000000000001",
"product": "mio_dio_defi_risk_passport",
"sources": [
"OFAC SDN"
],
"version": "0.9.0",
"passport": {
"card": "deep_passport",
"as_of": "2026-09-23T00:00:00.000Z",
"chain": "base",
"errors": [],
"status": "ok",
"address": "0x0000000000000000000000000000000000000001",
"product": "mio_dio_defi_risk_passport",
"version": "0.9.0",
"decision": {
"level": "safe_to_interact",
"summary": "Completed reads show no Aave, Lido peg, or vault-drawdown stress.",
"worst_signal": "none"
},
"protocols": {
"vault": null,
"aave_v3": {
"status": "ok",
"aave_v3": {
"health_factor": "3.21"
}
},
"lido_exit_risk": {
"status": "ok",
"amount_steth": "32"
}
},
"disclaimer": "MioDio Meridian deep passport. Joined best-effort public on-chain reads (Aave v3, Lido + Curve, optional ERC-4626). Not financial, legal, or investment advice. Never invents balances or vault positions. Missing reads are partial or error, not zeros. Always verify on-chain.",
"thresholds": {
"aave": {
"bands": {
"caution": "1.10 <= health_factor < 1.50",
"high_risk": "health_factor < 1.10",
"safe_to_interact": "health_factor >= 1.50 or no debt"
},
"health_factor": "3.21",
"total_debt_usd": "1.00",
"approx_at_risk_usd": "0",
"liquidation_distance": "2.2100",
"total_collateral_usd": "12.34"
},
"lido": {
"bands": {
"caution": "50 < discount_bps <= 200 or bunker_mode",
"high_risk": "discount_bps > 200 or queue paused",
"safe_to_interact": "discount_bps <= 50"
},
"paused": false,
"bunker_mode": false,
"discount_bps": 9,
"estimated_days_low": 1,
"probe_amount_steth": "32",
"estimated_days_high": 2
},
"vault": null,
"vault_reason": "vault exposure not discovered from public Meridian reads; pass optional ?vault=<erc4626> to include one vault. Positions are never invented."
}
},
"warnings": [],
"sanctions": {
"card": "sanctions_screen",
"chain": "ETH",
"match": false,
"address": "0x0000000000000000000000000000000000000001",
"product": "mio_dio_defi_risk_passport",
"sources": [
"OFAC SDN"
],
"version": "0.9.0",
"warnings": [],
"disclaimer": "Informational screening against the public OFAC SDN list only. Not legal or compliance advice and not a substitute for a compliance program.",
"sdn_entries": [],
"list_version": "10/14/2026",
"no_match_note": "No match does not mean the wallet is clean.",
"freshness_hours": 1.2,
"list_updated_at": "2026-10-15T06:15:00.000Z"
},
"disclaimer": "Informational screening against the public OFAC SDN list only. Not legal or compliance advice and not a substitute for a compliance program.",
"sdn_entries": [],
"list_version": "10/14/2026",
"no_match_note": "No match does not mean the wallet is clean.",
"freshness_hours": 1.2,
"list_updated_at": "2026-10-15T06:15:00.000Z"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"pathParams": {
"type": "object",
"required": [
"address"
],
"properties": {
"address": {
"type": "string",
"description": "Call before you sign. EVM address for the joined deep passport + OFAC SDN exact-match screen"
}
}
},
"queryParams": {
"type": "object",
"properties": {
"chain": {
"enum": [
"base",
"ethereum"
],
"type": "string",
"description": "Deep-passport read chain (Aave/vault). Also used as the ETH chain hint for the OFAC exact match."
},
"vault": {
"type": "string",
"description": "Optional ERC-4626 vault address. Omitted unless supplied."
},
"lido_amount": {
"type": "string",
"description": "Optional stETH probe amount. Defaults to 32."
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"address",
"chain",
"match",
"sdn_entries",
"disclaimer",
"passport",
"sanctions"
],
"properties": {
"card": {
"type": "string",
"const": "passport_sanctions"
},
"match": {
"type": "boolean"
},
"product": {
"type": "string",
"const": "mio_dio_defi_risk_passport"
},
"passport": {
"type": "object"
},
"sanctions": {
"type": "object"
},
"disclaimer": {
"type": "string"
},
"sdn_entries": {
"type": "array"
},
"no_match_note": {
"type": "string"
}
}
}
}
}
}
},
"routeTemplate": "/v1/passport-sanctions/:address"
}
},
"x402Version": 2
}Captured payload 5 of 12
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x4DA1ED782BD61BaE9AdD5a5CaBbCf32f767f8d7F",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 120
}
],
"resource": {
"url": "https://workers.miodiollc.com/v1/payment-check",
"tags": [
"defi",
"x402",
"payment"
],
"mimeType": "application/json",
"description": "Pre-sign check: agents call Meridian before they sign. MioDio Meridian payment-check: on-chain read of a Base USDC Exact authorization or Transfer (~$0.005 USDC Exact). Reports nonce used, matching transfers in a ≤120 minute window, and confirmations. Informational. 503 and not settled if every read fails. Never signs or moves funds. Errors: 400 invalid_body, 402 payment required, 503 upstream_unavailable. MioDio x402 DeFi. Terms: https://meridian.miodiollc.com/terms",
"serviceName": "MioDio Meridian Pay Check"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"nonce": "0xabababababababababababababababababababababababababababababababab",
"payer": "0x0000000000000000000000000000000000000001"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"tx": null,
"txs": [
"0x1111111111111111111111111111111111111111111111111111111111111111"
],
"card": "payment_check",
"as_of": "2026-10-21T15:05:00.000Z",
"notes": [],
"status": "ok",
"partial": false,
"product": "mio_dio_defi_risk_passport",
"version": "0.9.0",
"duplicate": false,
"disclaimer": "Informational, point-in-time on-chain read of public Base USDC data. The chain can reorganize; RPC can lag or fail. partial means at least one read did not complete. Never a refund decision and never proof that you did not pay. Meridian never signs transactions or moves funds.",
"nonce_used": true,
"latest_block": "21234567",
"confirmations_min": 14,
"matching_transfers": 1
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"properties": {
"tx": {
"type": "string",
"description": "Optional Base tx hash for receipt + confirmations."
},
"nonce": {
"type": "string",
"description": "EIP-3009 authorization nonce (bytes32)."
},
"payer": {
"type": "string",
"description": "EIP-3009 authorizer / Transfer from."
},
"amount": {
"type": "string",
"description": "USDC atomic amount (6 decimals)."
},
"pay_to": {
"type": "string",
"description": "USDC Transfer recipient to search for."
},
"window_minutes": {
"type": "integer",
"maximum": 120,
"minimum": 1,
"description": "Bounded Transfer search window. Default 60, max 120."
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"product",
"card",
"disclaimer",
"partial"
],
"properties": {
"txs": {
"type": "array",
"items": {
"type": "string"
}
},
"card": {
"type": "string",
"const": "payment_check"
},
"status": {
"enum": [
"ok",
"partial"
],
"type": "string"
},
"partial": {
"type": "boolean"
},
"product": {
"type": "string",
"const": "mio_dio_defi_risk_passport"
},
"duplicate": {
"type": [
"boolean",
"null"
]
},
"disclaimer": {
"type": "string"
},
"nonce_used": {
"type": [
"boolean",
"null"
]
},
"matching_transfers": {
"type": [
"integer",
"null"
]
}
}
}
}
}
}
},
"routeTemplate": "/v1/payment-check"
}
},
"x402Version": 2
}Captured payload 6 of 12
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x4DA1ED782BD61BaE9AdD5a5CaBbCf32f767f8d7F",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 120
}
],
"resource": {
"url": "https://workers.miodiollc.com/v1/recipient/0x0000000000000000000000000000000000000001",
"tags": [
"defi",
"recipient",
"x402"
],
"mimeType": "application/json",
"description": "Pre-sign check: agents call Meridian before they sign. Recipient readiness: Base vs Ethereum code, EIP-7702 vs known-wallet allowlist (unknown if unlisted; never safe), USDC freeze Base+Eth, USDT freeze Eth only, OFAC exact match, burn/token flags, optional address-poisoning (lookalike) with counterparties/from (~$0.005 Exact). Not advice. 400 invalid_address/unsupported_chain/query_too_long; unpaid 402; partial 200; both-chain fail 503 not settled. Terms: https://meridian.miodiollc.com/terms",
"serviceName": "MioDio Meridian Recipient"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"pathParams": {
"address": "0x0000000000000000000000000000000000000001"
},
"queryParams": {
"chain": "base"
}
},
"output": {
"type": "json",
"example": {
"card": "recipient_readiness",
"code": {
"this_chain": {
"bytes": 0,
"present": false
},
"other_chain": {
"bytes": 0,
"present": false
},
"undeployed_other_chain_trap": false
},
"as_of": "2026-11-04T00:00:00.000Z",
"chain": "base",
"freeze": {
"usdc": {
"base": {
"is_blacklisted": false
},
"ethereum": {
"is_blacklisted": false
}
},
"usdt": {
"base": {
"reason": "bridged Base USDT has no freeze function",
"checked": false
},
"ethereum": {
"is_blacklisted": false
}
}
},
"status": "ok",
"address": "0x0000000000000000000000000000000000000001",
"eip7702": {
"note": "Delegation can change at any block. Classification is against Meridian's known-wallet allowlist only. Not a safety verdict. Observed at the reported blocks.",
"this_chain": {
"vendor": null,
"delegate": null,
"delegated": false,
"classification": null
},
"other_chain": {
"vendor": null,
"delegate": null,
"delegated": false,
"classification": null
}
},
"product": "mio_dio_defi_risk_passport",
"version": "0.9.0",
"poisoning": null,
"sanctions": {
"match": false,
"sources": [
"OFAC SDN"
],
"sdn_entries": [],
"list_version": "11/04/2026",
"list_updated_at": "2026-11-04T13:15:00.000Z"
},
"disclaimer": "Informational, not advice. Point-in-time public reads on Base and Ethereum only. Delegation, freeze status, and code can change at any block. A known-wallet delegate is not a safety verdict. No match does not mean the address is clean. Not legal, compliance, or investment advice.",
"observed_at": {
"base": {
"block": "25000000"
},
"ethereum": {
"block": "23000000"
}
},
"known_address": {
"burn": false,
"zero": false,
"token_contract": null
},
"checked_chains": [
"base",
"ethereum"
]
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"pathParams": {
"type": "object",
"required": [
"address"
],
"properties": {
"address": {
"type": "string",
"description": "Call before you send. EVM address to screen for code, EIP-7702 delegation, stablecoin freeze, OFAC exact match, and known burn/token flags"
}
}
},
"queryParams": {
"type": "object",
"properties": {
"from": {
"type": "string",
"description": "Optional extra counterparty (usually the sender). Combined with counterparties, capped at 20 unique addresses."
},
"chain": {
"enum": [
"base",
"ethereum"
],
"type": "string",
"default": "base",
"description": "This-chain for the undeployed-code trap (default base). Freeze and 7702 are read on both Base and Ethereum. Independent of the USDC payment network."
},
"counterparties": {
"type": "string",
"description": "Optional comma-separated past counterparties (max 20). Caller-list lookalike only; no history scan."
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"product",
"version",
"status",
"address",
"chain",
"disclaimer",
"code",
"eip7702",
"freeze",
"sanctions",
"known_address"
],
"properties": {
"card": {
"type": "string",
"const": "recipient_readiness"
},
"code": {
"type": "object"
},
"as_of": {
"type": "string"
},
"chain": {
"enum": [
"base",
"ethereum"
],
"type": "string"
},
"errors": {
"type": "array",
"items": {
"type": "string"
}
},
"freeze": {
"type": "object"
},
"status": {
"enum": [
"ok",
"partial"
],
"type": "string"
},
"address": {
"type": "string"
},
"eip7702": {
"type": "object"
},
"product": {
"type": "string",
"const": "mio_dio_defi_risk_passport"
},
"version": {
"type": "string"
},
"poisoning": {
"type": [
"object",
"null"
]
},
"sanctions": {
"type": "object"
},
"disclaimer": {
"type": "string"
},
"observed_at": {
"type": "object"
},
"known_address": {
"type": "object"
},
"checked_chains": {
"type": "array",
"items": {
"type": "string"
}
}
}
}
}
}
}
},
"routeTemplate": "/v1/recipient/:address"
}
},
"x402Version": 2
}Captured payload 7 of 12
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x4DA1ED782BD61BaE9AdD5a5CaBbCf32f767f8d7F",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 120
}
],
"resource": {
"url": "https://workers.miodiollc.com/v1/lido/exit-risk",
"tags": [
"defi",
"lido",
"lst",
"risk"
],
"mimeType": "application/json",
"description": "Pre-sign check: agents call Meridian before they sign. MioDio Meridian Lido exit-risk card: stETH/ETH Curve peg, withdrawal-queue ETA and exit liquidity for a stETH amount (~$0.005 USDC Exact on Base). Errors: 400 amount_required or invalid_amount, 402 payment required. An upstream RPC failure is a charged 200 with status partial/error. Unexpected Worker 5xx is not charged. MioDio x402 DeFi. Terms: https://meridian.miodiollc.com/terms",
"serviceName": "MioDio Meridian Lido Exit"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"amount": "32"
}
},
"output": {
"type": "json",
"example": {
"eta": {
"notes": [
"Accounting oracle typically finalizes a batch about once per day."
],
"method": "onchain_heuristic",
"estimated_days_low": 1,
"visible_liquid_eth": "15000.0",
"estimated_days_high": 2,
"coverable_this_report": true
},
"peg": {
"pool": "0xDC24316b9AE028F1497c275EB9192a3Ea0f67022",
"venue": "curve_steth_eth",
"pool_eth": "40000.0",
"pool_steth": "41000.0",
"discount_bps": 9,
"size_eth_out": "31.96",
"protocol_note": "stETH is a rebasing token: protocol accounting is 1:1 with ETH. Secondary-market peg is Curve stETH/ETH get_dy.",
"size_discount_bps": 12,
"spot_eth_out_per_steth": "0.9991"
},
"card": "lido_exit_risk",
"as_of": "2026-09-14T00:00:00.000Z",
"chain": "ethereum",
"status": "ok",
"product": "mio_dio_defi_risk_passport",
"version": "0.9.0",
"disclaimer": "MioDio Meridian Lido exit-risk card. Best-effort public on-chain Ethereum data (Lido contracts + Curve stETH/ETH pool). Not financial, legal, or investment advice. Not Lido-official. Queue ETA is a labeled on-chain heuristic, not a guarantee. Figures are best checked against on-chain state.",
"exit_queue": {
"paused": false,
"contract": "0x889edC2eDab5f40e902b864aD4d7AdE8E412F9B1",
"min_steth": "0.0000000000000001",
"bunker_mode": false,
"locked_ether": "8000.0",
"last_request_id": "100040",
"requests_needed": 1,
"unfinalized_steth": "12000.0",
"amount_ahead_steth": "12000.0",
"unfinalized_requests": "40",
"max_steth_per_request": "1000.0",
"last_finalized_request_id": "100000"
},
"amount_steth": "32"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"properties": {
"amount": {
"type": "string",
"description": "Call before you sign. Optional query parameter: stETH amount in human units, for example 32. The 402 resource and catalog listing URL are the canonical path /v1/lido/exit-risk (no query) so Bazaar routeTemplate matches. The secondary-market size quote and FIFO queue ETA are computed for this size. Unpaid probes without amount still 402 so crawlers can index the route."
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"product",
"card",
"version",
"status",
"chain",
"amount_steth",
"as_of",
"disclaimer",
"peg",
"exit_queue",
"eta"
],
"properties": {
"eta": {
"type": "object"
},
"peg": {
"type": "object"
},
"card": {
"type": "string",
"const": "lido_exit_risk"
},
"as_of": {
"type": "string"
},
"chain": {
"type": "string",
"const": "ethereum"
},
"errors": {
"type": "array",
"items": {
"type": "string"
}
},
"status": {
"enum": [
"ok",
"partial"
],
"type": "string"
},
"product": {
"type": "string",
"const": "mio_dio_defi_risk_passport"
},
"version": {
"type": "string"
},
"disclaimer": {
"type": "string"
},
"exit_queue": {
"type": "object"
},
"amount_steth": {
"type": "string"
}
}
}
}
}
}
},
"routeTemplate": "/v1/lido/exit-risk"
}
},
"x402Version": 2
}Captured payload 8 of 12
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x4DA1ED782BD61BaE9AdD5a5CaBbCf32f767f8d7F",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 120
}
],
"resource": {
"url": "https://workers.miodiollc.com/v1/drift",
"tags": [
"defi",
"tx",
"drift",
"agent"
],
"mimeType": "application/json",
"description": "Pre-sign check: agents call Meridian before they sign. MioDio Meridian signature decoder (~$0.005 USDC Exact on Base). With intent: match / drift / cannot_verify vs the unsigned tx or EIP-712 payload. Without intent: decode Permit, Permit2, DAI, CoW, Seaport or EIP-7702 and return risk_flags. Unknown primaryType is UNDECODED_CAUTION. A match is not a guarantee. Errors: 400 invalid_body or unsupported_chain, 402 payment required. MioDio x402 DeFi. Terms: https://meridian.miodiollc.com/terms",
"serviceName": "MioDio Meridian Tx Drift"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"tx": {
"to": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"data": "0xa9059cbb000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000f4240",
"value": "0x0",
"chainId": 8453
},
"chain": "base",
"intent": {
"token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"action": "transfer",
"amount": "1000000",
"recipient": "0x0000000000000000000000000000000000000001",
"expected_contract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
}
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"card": "parameter_drift",
"as_of": "2026-10-17T00:00:00.000Z",
"chain": "base",
"diffs": [
{
"field": "recipient",
"actual": "0x0000000000000000000000000000000000000002",
"intended": "0x0000000000000000000000000000000000000001",
"severity": "high"
}
],
"flags": [
"recipient_differs"
],
"limits": [],
"status": "ok",
"decoded": {
"args": {
"to": "0x0000000000000000000000000000000000000002",
"amount": "1000000"
},
"from": null,
"kind": "erc20_transfer",
"token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"value": "0",
"action": "transfer",
"amount": "1000000",
"target": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"min_out": null,
"spender": null,
"function": "transfer",
"selector": "0xa9059cbb",
"recipient": "0x0000000000000000000000000000000000000002",
"unlimited": false
},
"product": "mio_dio_defi_risk_passport",
"verdict": "drift",
"version": "0.9.0",
"bindings": {
"alg": "keccak256",
"preimage": {
"to": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"data": "0xa9059cbb000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000f4240",
"value": "0"
},
"intent_sha256": "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
"checked_keccak": "0xcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd",
"calldata_keccak": "0xabababababababababababababababababababababababababababababababab",
"typed_data_digest": null
},
"disclaimer": "MioDio Meridian signature decoder / parameter-drift check. With intent: compares only the intent and unsigned transaction or EIP-712 payload you send. A match means every security-relevant decoded field was present in the intent and equal — not that the intent was authentic, complete, or safe, and not a recommendation to sign. Unknown calldata, a sparse intent, extra inner calls, or undeclared value is never match. Without intent: decodes Permit, Permit2, DAI, CoW, Seaport, or EIP-7702 and returns risk_flags; it does not compare or verdict. Unknown primaryType is UNDECODED_CAUTION, not a safety finding. Meridian never signs transactions or moves funds. Not financial, legal, or security advice. Terms: https://meridian.miodiollc.com/terms",
"risk_flags": []
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"anyOf": [
{
"required": [
"tx"
]
},
{
"required": [
"typed_data"
]
},
{
"required": [
"eip7702_authorization"
]
}
],
"required": [],
"properties": {
"tx": {
"type": "object",
"description": "Exact unsigned transaction about to be signed: to, value, data, optional chainId/from."
},
"chain": {
"enum": [
"base",
"ethereum"
],
"type": "string",
"description": "Target chain of the unsigned tx (default base). Independent of the USDC payment network."
},
"intent": {
"type": "object",
"description": "Optional declared intent: action, recipient/spender, token, amount, max slippage, expected contract. When present, drift compares intent to the decoded payload (same verdicts as before). When omitted, the route only decodes and returns risk_flags."
},
"typed_data": {
"type": "object",
"description": "Optional EIP-712 payload when that is what will be signed. Decoded types: Permit (EIP-2612 and DAI-style), PermitSingle, PermitBatch, PermitTransferFrom, CoW Order, Seaport OrderComponents. Unknown primaryType returns status ok with UNDECODED_CAUTION plus primaryType, domain, and verifyingContract. Decoder caps: request body ≤ 20480 characters; tx.data ≤ 8192 bytes; typed JSON depth ≤ 8, nodes ≤ 200, object keys ≤ 32, array length ≤ 16; type, field, and primaryType names ≤ 64 characters; array suffix depth ≤ 4; wei ≤ 2^256-1 (≤ 78 decimal digits); eip7702_authorization length ≤ 16."
},
"eip7702_authorization": {
"oneOf": [
{
"type": "object"
},
{
"type": "array",
"items": {
"type": "object"
}
}
],
"description": "Optional EIP-7702 authorization tuple { chainId, address, nonce } (not EIP-712), or an array of those tuples. chainId 0 is valid on all chains and is flagged. The delegate address is reported as unknown delegate until an allowlist is populated."
}
},
"description": "Decoder caps: request body ≤ 20480 characters; tx.data ≤ 8192 bytes; typed JSON depth ≤ 8, nodes ≤ 200, object keys ≤ 32, array length ≤ 16; type, field, and primaryType names ≤ 64 characters; array suffix depth ≤ 4; wei ≤ 2^256-1 (≤ 78 decimal digits); eip7702_authorization length ≤ 16."
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"product",
"card",
"status",
"decoded",
"risk_flags",
"bindings",
"disclaimer"
],
"properties": {
"card": {
"type": "string",
"const": "parameter_drift"
},
"as_of": {
"type": "string"
},
"chain": {
"enum": [
"base",
"ethereum"
],
"type": "string"
},
"diffs": {
"type": "array"
},
"flags": {
"type": "array",
"items": {
"type": "string"
}
},
"limits": {
"type": "array",
"items": {
"type": "string"
}
},
"status": {
"type": "string",
"const": "ok"
},
"decoded": {
"type": "object"
},
"product": {
"type": "string",
"const": "mio_dio_defi_risk_passport"
},
"verdict": {
"enum": [
"match",
"drift",
"cannot_verify"
],
"type": "string"
},
"version": {
"type": "string"
},
"bindings": {
"type": "object"
},
"disclaimer": {
"type": "string"
},
"enrichment": {
"type": "object"
},
"risk_flags": {
"type": "array",
"items": {
"type": "string"
}
},
"typed_data": {
"type": [
"object",
"null"
]
},
"eip7702_authorization": {
"type": "array"
}
}
}
}
}
}
},
"routeTemplate": "/v1/drift"
}
},
"x402Version": 2
}Captured payload 9 of 12
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x4DA1ED782BD61BaE9AdD5a5CaBbCf32f767f8d7F",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 120
}
],
"resource": {
"url": "https://workers.miodiollc.com/v1/simulate",
"tags": [
"defi",
"tx",
"simulate",
"agent"
],
"mimeType": "application/json",
"description": "Pre-sign check: agents call Meridian before they sign. MioDio Meridian transaction simulation: dry-run of an unsigned tx on Base/Ethereum (~$0.01 USDC Exact on Base). Success or revert, gas, balances, approvals. Simulation is a point-in-time dry run, not a guarantee. Never signs or moves funds. Errors: 400 invalid_body or unsupported_chain, 402 payment required. RPC fail is a charged 200 partial. Unexpected Worker 5xx is not charged. MioDio x402 DeFi. Terms: https://meridian.miodiollc.com/terms",
"serviceName": "MioDio Meridian Tx Simulate"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"tx": {
"to": "0x0000000000000000000000000000000000000001",
"data": "0x",
"from": "0x4200000000000000000000000000000000000006",
"value": "0x1"
},
"chain": "base"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"rpc": "public",
"card": "transaction_simulate",
"as_of": "2026-10-17T00:00:00.000Z",
"chain": "base",
"notes": [
"A simulation is a point-in-time dry run against the latest chain state and is not a guarantee of inclusion, gas, or the eventual outcome."
],
"result": "success",
"status": "ok",
"decoded": {
"from": "0x4200000000000000000000000000000000000006",
"kind": "native_transfer",
"token": "native",
"value": "1",
"action": "transfer",
"amount": "1",
"target": "0x0000000000000000000000000000000000000001",
"spender": null,
"function": "native_transfer",
"selector": null,
"recipient": "0x0000000000000000000000000000000000000001",
"unlimited": false
},
"product": "mio_dio_defi_risk_passport",
"version": "0.9.0",
"gas_used": "24000",
"warnings": [],
"disclaimer": "MioDio Meridian transaction simulation. Dry-run of the unsigned transaction you send against chain state at the simulated block. A simulation is a point-in-time dry run and not a guarantee of inclusion, gas, balances, or the eventual outcome (MEV, oracles, upgrades, or later state can differ). Meridian never signs transactions or moves funds. Not financial, legal, or security advice. Terms: https://meridian.miodiollc.com/terms",
"intent_check": null,
"revert_reason": null,
"balance_changes": [
{
"asset": "native",
"delta": "-1",
"symbol": "ETH",
"address": "0x4200000000000000000000000000000000000006",
"decimals": 18
},
{
"asset": "native",
"delta": "1",
"symbol": "ETH",
"address": "0x0000000000000000000000000000000000000001",
"decimals": 18
}
],
"approvals_emitted": [],
"simulated_at_block": "52731955"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"required": [
"tx"
],
"properties": {
"tx": {
"type": "object",
"description": "Exact unsigned transaction about to be signed: from, to, value, data, optional gas."
},
"chain": {
"enum": [
"base",
"ethereum"
],
"type": "string",
"description": "Read chain for the dry run (default base). Independent of the USDC payment network."
},
"intent": {
"type": "object",
"description": "Optional declared intent (same object as POST /v1/drift) compared to the simulated outcome."
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"product",
"card",
"result",
"balance_changes",
"approvals_emitted",
"warnings",
"notes",
"disclaimer"
],
"properties": {
"card": {
"type": "string",
"const": "transaction_simulate"
},
"chain": {
"enum": [
"base",
"ethereum"
],
"type": "string"
},
"notes": {
"type": "array",
"items": {
"type": "string"
}
},
"result": {
"enum": [
"success",
"revert",
"unavailable"
],
"type": "string"
},
"status": {
"enum": [
"ok",
"partial"
],
"type": "string"
},
"decoded": {
"type": "object"
},
"product": {
"type": "string",
"const": "mio_dio_defi_risk_passport"
},
"version": {
"type": "string"
},
"gas_used": {
"type": [
"string",
"null"
]
},
"warnings": {
"type": "array",
"items": {
"type": "string"
}
},
"disclaimer": {
"type": "string"
},
"intent_check": {
"type": [
"object",
"null"
]
},
"revert_reason": {
"type": [
"string",
"null"
]
},
"balance_changes": {
"type": "array"
},
"approvals_emitted": {
"type": "array"
},
"simulated_at_block": {
"type": [
"string",
"null"
]
}
}
}
}
}
}
},
"routeTemplate": "/v1/simulate"
}
},
"x402Version": 2
}Captured payload 10 of 12
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x4DA1ED782BD61BaE9AdD5a5CaBbCf32f767f8d7F",
"amount": "20000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 120
}
],
"resource": {
"url": "https://workers.miodiollc.com/v1/passport/0x0000000000000000000000000000000000000001",
"tags": [
"defi",
"risk",
"passport"
],
"mimeType": "application/json",
"description": "Pre-sign check: agents call Meridian before they sign. MioDio Meridian deep passport: one decision card joining Aave v3, Lido exit and optional ERC-4626 vault reads for an EVM address (~$0.02 USDC Exact on Base). Errors: 400 invalid_address, unsupported_chain or invalid_amount, 402 payment required. An upstream RPC failure is a charged 200 with status partial/error. Unexpected Worker 5xx is not charged. MioDio x402 DeFi. Terms: https://meridian.miodiollc.com/terms",
"serviceName": "MioDio Meridian Deep Passport"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"pathParams": {
"address": "0x0000000000000000000000000000000000000001"
},
"queryParams": {
"chain": "base",
"lido_amount": "32"
}
},
"output": {
"type": "json",
"example": {
"card": "deep_passport",
"as_of": "2026-09-23T00:00:00.000Z",
"chain": "base",
"errors": [],
"status": "ok",
"address": "0x0000000000000000000000000000000000000001",
"product": "mio_dio_defi_risk_passport",
"version": "0.9.0",
"decision": {
"level": "safe_to_interact",
"summary": "Completed reads show no Aave, Lido peg, or vault-drawdown stress.",
"worst_signal": "none"
},
"protocols": {
"vault": null,
"aave_v3": {
"status": "ok",
"aave_v3": {
"health_factor": "3.21"
}
},
"lido_exit_risk": {
"status": "ok",
"amount_steth": "32"
}
},
"disclaimer": "MioDio Meridian deep passport. Joined best-effort public on-chain reads (Aave v3, Lido + Curve, optional ERC-4626). Not financial, legal, or investment advice. Never invents balances or vault positions. Missing reads are partial or error, not zeros. Always verify on-chain.",
"thresholds": {
"aave": {
"bands": {
"caution": "1.10 <= health_factor < 1.50",
"high_risk": "health_factor < 1.10",
"safe_to_interact": "health_factor >= 1.50 or no debt"
},
"health_factor": "3.21",
"total_debt_usd": "1.00",
"approx_at_risk_usd": "0",
"liquidation_distance": "2.2100",
"total_collateral_usd": "12.34"
},
"lido": {
"bands": {
"caution": "50 < discount_bps <= 200 or bunker_mode",
"high_risk": "discount_bps > 200 or queue paused",
"safe_to_interact": "discount_bps <= 50"
},
"paused": false,
"bunker_mode": false,
"discount_bps": 9,
"estimated_days_low": 1,
"probe_amount_steth": "32",
"estimated_days_high": 2
},
"vault": null,
"vault_reason": "vault exposure not discovered from public Meridian reads; pass optional ?vault=<erc4626> to include one vault. Positions are never invented."
}
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"pathParams": {
"type": "object",
"required": [
"address"
],
"properties": {
"address": {
"type": "string",
"description": "Call before you sign. EVM address (checksummed or 0x-prefixed hex) to grade across Aave / Lido / optional vault"
}
}
},
"queryParams": {
"type": "object",
"properties": {
"chain": {
"enum": [
"base",
"ethereum"
],
"type": "string",
"description": "Aave (and optional vault) read chain. Defaults to base. Lido reads stay on Ethereum."
},
"vault": {
"type": "string",
"description": "Optional ERC-4626 vault address. Omitted unless supplied — Meridian does not invent user vault positions."
},
"lido_amount": {
"type": "string",
"description": "Optional stETH probe amount (human units). Defaults to 32."
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"product",
"card",
"version",
"disclaimer",
"address",
"chain",
"as_of",
"status",
"decision",
"thresholds",
"protocols",
"errors"
],
"properties": {
"card": {
"type": "string",
"const": "deep_passport"
},
"as_of": {
"type": "string"
},
"chain": {
"enum": [
"base",
"ethereum"
],
"type": "string"
},
"errors": {
"type": "array",
"items": {
"type": "string"
}
},
"status": {
"enum": [
"ok",
"partial",
"error"
],
"type": "string"
},
"address": {
"type": "string"
},
"product": {
"type": "string",
"const": "mio_dio_defi_risk_passport"
},
"version": {
"type": "string"
},
"decision": {
"type": "object"
},
"protocols": {
"type": "object"
},
"disclaimer": {
"type": "string"
},
"thresholds": {
"type": "object"
}
}
}
}
}
}
},
"routeTemplate": "/v1/passport/:address"
}
},
"x402Version": 2
}Captured payload 11 of 12
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x4DA1ED782BD61BaE9AdD5a5CaBbCf32f767f8d7F",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 120
}
],
"resource": {
"url": "https://workers.miodiollc.com/v1/vault/0xc1256Ae5FF1cf2719D4937adb3bbCCab2E00A2Ca",
"tags": [
"defi",
"erc4626",
"vault",
"risk"
],
"mimeType": "application/json",
"description": "Pre-sign check: agents call Meridian before they sign. MioDio Meridian ERC-4626 vault risk card: share price, drawdown, APY lookback and idle cash for one vault (~$0.005 USDC Exact on Base). Errors: 400 invalid_address, unsupported_chain or invalid_amount, 402 payment required. An upstream RPC failure is a charged 200 with status partial/error. Unexpected Worker 5xx is not charged. MioDio x402 DeFi. Terms: https://meridian.miodiollc.com/terms",
"serviceName": "MioDio Meridian Vault Risk"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"pathParams": {
"address": "0xc1256Ae5FF1cf2719D4937adb3bbCCab2E00A2Ca"
},
"queryParams": {
"chain": "base"
}
},
"output": {
"type": "json",
"example": {
"apy": {
"method": "share_price_lookback",
"window": "7d",
"estimate_pct": "5.10"
},
"card": "vault_risk",
"as_of": "2026-09-14T00:00:00.000Z",
"chain": "base",
"vault": "0xc1256Ae5FF1cf2719D4937adb3bbCCab2E00A2Ca",
"status": "ok",
"product": "mio_dio_defi_risk_passport",
"version": "0.9.0",
"liquidity": {
"note": "idle_assets is the underlying token balance of the vault contract. Strategy-held assets may still be withdrawable.",
"amount": null,
"idle_assets": "120000.0",
"total_assets": "25000000.0",
"idle_coverage_bps": 48,
"idle_covers_amount": null
},
"disclaimer": "MioDio Meridian ERC-4626 vault risk card. Best-effort public on-chain reads only. Not financial, legal, or investment advice. APY is a share-price lookback, not a promise. Idle assets may understate withdrawable liquidity when the vault can unwind strategies. Always verify on-chain.",
"vault_meta": {
"name": "Moonwell Flagship USDC",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"symbol": "mwUSDC",
"asset_symbol": "USDC",
"asset_decimals": 6,
"share_decimals": 18
},
"share_price": {
"lookback": {
"d1": "1.0419",
"d7": "1.0410",
"d30": "1.0375"
},
"drawdown_bps": 0,
"assets_per_share": "1.0421"
}
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"pathParams": {
"type": "object",
"required": [
"address"
],
"properties": {
"address": {
"type": "string",
"description": "Call before you sign. ERC-4626 vault contract address"
}
}
},
"queryParams": {
"type": "object",
"properties": {
"chain": {
"enum": [
"base",
"ethereum"
],
"type": "string",
"description": "Vault chain. Defaults to base. Ethereum is optional."
},
"amount": {
"type": "string",
"description": "Optional underlying amount in human units. When set, idle_covers_amount compares vault idle cash to this size."
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"product",
"card",
"version",
"status",
"chain",
"vault",
"as_of",
"disclaimer",
"vault_meta",
"share_price",
"apy",
"liquidity"
],
"properties": {
"apy": {
"type": "object"
},
"card": {
"type": "string",
"const": "vault_risk"
},
"as_of": {
"type": "string"
},
"chain": {
"enum": [
"base",
"ethereum"
],
"type": "string"
},
"notes": {
"type": "array",
"items": {
"type": "string"
}
},
"vault": {
"type": "string"
},
"errors": {
"type": "array",
"items": {
"type": "string"
}
},
"status": {
"enum": [
"ok",
"partial"
],
"type": "string"
},
"product": {
"type": "string",
"const": "mio_dio_defi_risk_passport"
},
"version": {
"type": "string"
},
"liquidity": {
"type": "object"
},
"disclaimer": {
"type": "string"
},
"vault_meta": {
"type": "object"
},
"share_price": {
"type": "object"
}
}
}
}
}
}
},
"routeTemplate": "/v1/vault/:address"
}
},
"x402Version": 2
}Captured payload 12 of 12
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x4DA1ED782BD61BaE9AdD5a5CaBbCf32f767f8d7F",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 120
}
],
"resource": {
"url": "https://workers.miodiollc.com/v1/risk/0xBA9424d650A4F5c80a0dA641254d1AcCE2A37057",
"tags": [
"defi",
"risk",
"aave"
],
"mimeType": "application/json",
"description": "Pre-sign check: agents call Meridian before they sign. MioDio Meridian Aave v3 risk card for an EVM address: health factor, collateral, debt and liquidation distance (~$0.005 USDC Exact on Base). Errors: 400 invalid_address or unsupported_chain (chain must be base or ethereum), 402 payment required. An upstream RPC failure is a charged 200 with status partial/error. Unexpected Worker 5xx is not charged. MioDio x402 DeFi. Terms: https://meridian.miodiollc.com/terms",
"serviceName": "MioDio Meridian Risk Passport"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"pathParams": {
"address": "0xBA9424d650A4F5c80a0dA641254d1AcCE2A37057"
},
"queryParams": {
"chain": "base"
}
},
"output": {
"type": "json",
"example": {
"as_of": "2026-09-14T00:00:00.000Z",
"chain": "base",
"hooks": {
"next": [
"Optional: stablecoin exposure breakdown via UiPoolDataProvider"
],
"notes": [
"MVP uses Aave v3 Pool.getUserAccountData only (collateral, debt, HF).",
"No social scrapes, no off-chain enrichment resale."
]
},
"status": "ok",
"aave_v3": {
"raw": {
"ltv": "7500",
"healthFactor": "3210000000000000000",
"totalDebtBase": "100000000",
"totalCollateralBase": "1234000000",
"availableBorrowsBase": "567000000",
"currentLiquidationThreshold": "8250"
},
"pool": "0xA238Dd80C259a72e81d7e4664a9801593F98d1c5",
"ltv_pct": "75.00",
"protocol": "aave_v3",
"health_factor": "3.21",
"total_debt_usd": "1.00",
"total_collateral_usd": "12.34",
"available_borrows_usd": "5.67",
"liquidation_threshold_pct": "82.50"
},
"address": "0x0000000000000000000000000000000000000001",
"product": "mio_dio_defi_risk_passport",
"version": "0.9.0",
"disclaimer": "MioDio DeFi Risk Passport (MVP). Best-effort public on-chain reads only. Not financial, legal, or investment advice. No KYC/social enrichment. Balances are never invented — missing fields mean the read failed or was not attempted. Always verify on-chain."
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"pathParams": {
"type": "object",
"required": [
"address"
],
"properties": {
"address": {
"type": "string",
"description": "Call before you sign. EVM address (checksummed or 0x-prefixed hex) to snapshot on Aave v3"
}
}
},
"queryParams": {
"type": "object",
"properties": {
"chain": {
"enum": [
"base",
"ethereum"
],
"type": "string",
"description": "Aave v3 read chain (public RPC). Defaults to base. Independent of the USDC payment network."
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"product",
"version",
"status",
"address",
"chain",
"as_of",
"disclaimer",
"aave_v3",
"hooks"
],
"properties": {
"as_of": {
"type": "string"
},
"chain": {
"enum": [
"base",
"ethereum"
],
"type": "string"
},
"hooks": {
"type": "object"
},
"errors": {
"type": "array",
"items": {
"type": "string"
}
},
"status": {
"enum": [
"ok",
"partial"
],
"type": "string"
},
"aave_v3": {
"type": [
"object",
"null"
]
},
"address": {
"type": "string"
},
"product": {
"type": "string",
"const": "mio_dio_defi_risk_passport"
},
"version": {
"type": "string"
},
"disclaimer": {
"type": "string"
}
}
}
}
}
}
},
"routeTemplate": "/v1/risk/:address"
}
},
"x402Version": 2
}Can I trust it score from our own monitoring
score from our own monitoring
85/100 Solid
#54 of 136 in Finance. Bands: strong 93+, solid 75+, mixed 55+, weak below 55.
- Reliability
- 99.9% uptime 30d
- Compliance
- A 14/14 checks pass
- Price
- $0.005 to $0.10 p29 in Finance
- Risk
- clean no risk flag
- Traction
- $0.43 30d 5 buyers, top buyer 95% (address, not entity)
- Last change
- schema changed 32m ago 2 in 30d
14/14 compliance checks
- 402 payload captured
- accepts[] array present
- payTo address recoverable
- payTo at accepts[0].payTo (conformant shape)
- payTo is a valid on-chain address
- atomic price declared
- atomic price in a sane range
- asset (token) address declared
- network resolves to CAIP-2
- payment scheme declared
- served over HTTPS
- declares the current x402 version (2)
- EIP-712 domain parameters present on every EVM entry
- x402 v2 envelope delivered in the payment-required header
402 terms unchanged since 2026-11-05. Last up 2026-11-05.
── Site signals
- homepage reachable
- openapi doc
- pricing page
- llms.txt
- robots.txt
- terms page
How the score works
What the score read on this service: status online, 99.9% uptime 30d, 1004ms response p95, x402 compliance 14 of 14, $0.005 price against the category, on-chain traction measured. Each of those is measured, and each is published in full below.
The score comes from our own monitoring, never from reviews, operator claims, or a language model: reliability, x402 compliance, price against the category, a deterministic risk flag, and a small on-chain traction term, weighted by ranking generation 3. It is not placement anyone can buy: the paid verify tier is reported beside it and is not one of its inputs. Every component below stays published and read-only.
Bands on the 0 to 100 measured score: strong at 93 and above, solid from 75, mixed from 55, weak below 55. Price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, so the score places a service in its own field.
It is a score inside Finance, and only there: price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, which here means 136 listings, this one among them: the same 136 the position above is counted against. When the two differ, the field is the wider one, because a listing we have measured too little of to rank still sits in the field the price and the speed are normalized over. The same service in a different field would read differently. The same engine answers GET /api/v1/best, and asked for a different pool (the whole directory, or another filter) it returns a different number for this service under this same ranking generation. Neither is more correct: they answer different questions, and the methodology states which is which.
Settled via coinbase ($0.43, 20 tx). Traction is a conservative undercount; first settlement seen 2026-09-13.
All measured facts
What it does
Meridian is a read-only x402 API an agent calls before it signs or pays. It screens an address against the public US Treasury OFAC SDN list (exact address match) for $0.005, or $0.10 for up to 50. It checks that an unsigned transaction matches the agent's intent ($0.005) and dry-runs it on Base or Ethereum ($0.01). It checks a recipient address is ready to receive: frozen, EIP-7702 and look-alike flags ($0.005). It preflights another x402 URL before the agent pays it ($0.005). It reads any USDC payment on Base for reuse or duplicates ($0.005). It reads Aave v3, Lido and ERC-4626 vault risk ($0.005, or $0.02 for a deep passport). Paid answers carry a signed receipt. USDC on Base, no account, no API key. It never holds keys or moves funds. Not legal, compliance or financial advice. Docs: https://meridian.miodiollc.com/docs
Meridian by MioDio is a listed x402 Finance API. Captured payment terms name Base. Monitoring and settlement figures below describe the observations available to this directory; an unpaid HTTP 402 check does not prove that a paid call will deliver.
Assessment computed at . Latest service check observed at . Service data JSON · Measurement methodology.
Page rendered at . This response time is separate from the observation and computation times attached to each measurement.
Latest endpoint observation: . Latest price capture: . Prices are recorded quotes, not a promise of availability. Token assets and payment terms are listed separately. Endpoint data JSON · Price history JSON · Measurement methodology.
Assessment computed at . Uptime uses the stated daily-rollup window; response times are in milliseconds, compliance is passed/evaluated checks, and traction is a measured settlement floor. The comparison score is out of 100 within this category. Assessment JSON · Measurement methodology.
Observed daily coverage: 2026-10-07 to 2026-11-05 UTC. Daily monitoring and settlement rollups do not expose their computation time; a bucket date is not an update timestamp. Latest settlement in the assessment: . Uptime and response JSON · Volume JSON · Buyers JSON · Measurement methodology.
Ranked from the measured category pool, refreshed at most once a minute. The comparison has no persisted computation timestamp; the assessment time above belongs to this service only. Ranking API documentation · Ranking methodology.
x402 List home · Services · Finance
- uptime · latest daily rollup
- 100%
- uptime 7d
- 99.8%
- uptime 30d
- 99.9%
- uptime 90d
- 99.9%
- response p95
- 1004ms
- avg response
- 612ms
- total checks
- 3,602
Measured on the unpaid 402 handshake, not the paid call. A service can 402 correctly and still fail after payment.
- price (min)
- $0.005
- price (max)
- $0.10
- category percentile (min)
- p29 in Finance
- category percentile (max)
- p68 in Finance
- endpoints / prices
- 12 / 4
- model
- tiered
- stability
- 0%
No deterministic risk flag. Risk fires only on an exact blocklist match, or a reserved-brand name with a mismatched verified payTo. Never from low uptime, a high price, or a model guess.
- domain age
- 1297d
- registrar
- NameCheap, Inc.
- hosting
- custom
- domain created
- 2023-04-15
Identity facts, not a risk score.
- assessment volume 30d
- $0.43
- exact assessment volume 30d (USD)
- 0.43
- assessment recorded at (UTC)
- 2026-11-05T14:23:02.665Z
- buyers 30d
- 5
- settlements 30d
- 20
- measured since
- 2026-09-13 (start of our harvest window)
- last settlement
- 2026-10-19
- top buyer share
- 95% of 30d volume (address, not entity)
- top 3 buyers share
- 97% of 30d volume (addresses, not entities)
- concentrated volume
- no
- trend 7d vs 30d
- 0.00x the 30d daily rate
- networks
- eip155:8453
- volume all-time
- $1.12
- settlements all-time
- 37
- median settlement 30d
- $0.005
- max settlement 30d
- $0.25
Assessment volume uses the latest 30d assessment. Over time sums daily address snapshots, rounded to cents and refreshed separately. The two sources can differ in timing, precision and shared-address attribution. Amounts use cents for comparison; known sub-cent values keep up to 12 significant digits. The exact stored assessment value is shown above.
Conservative undercount: only USDC settlements via facilitators we measure are counted. A measured floor, not an estimate.
Top buyer share lowers the on-chain traction part of the ranking score behind this page's verdict and /best, by up to half when one address holds all 30d volume. The Recommended and Highest volume sorts of the services list do not use it; they use the Concentrated volume rule instead.
- member since
- 2026-09-21
Recent checks
| Checked at (UTC) | Status | HTTP | Response | Endpoints |
|---|---|---|---|---|
| Online | 402 | 306ms | 12 | |
| Online | 402 | 150ms | 12 | |
| Online | 402 | 172ms | 12 | |
| Online | 402 | 150ms | 12 | |
| Online | 402 | 288ms | 2 | |
| Online | 402 | 310ms | 2 | |
| Online | 402 | 299ms | 2 | |
| Online | 402 | 393ms | 2 | |
| Online | 402 | 371ms | 2 | |
| Online | 402 | 463ms | 2 | |
| Online | 402 | 346ms | 2 | |
| Online | 402 | 369ms | 2 | |
| Online | 402 | 382ms | 2 | |
| Online | 402 | 355ms | 2 | |
| Online | 402 | 560ms | 2 | |
| Online | 402 | 317ms | 2 | |
| Online | 402 | 481ms | 2 | |
| Online | 402 | 306ms | 2 |
Changes2 in 30d
| Observed at (UTC) | Change | Evidence |
|---|---|---|
| schema changed | endpoint added endpoint added endpoint added endpoint added endpoint added endpoint added endpoint added endpoint added endpoint added endpoint added schema added schema added schema added schema added schema added schema added schema added schema added schema added schema added | |
| price changed |
|
Amounts are on-wire atomic units in the named asset.
Over time
On-chain volume daily snapshots, USD 30d: $0.43, peak $0.38 on 10-15
volume no data in the payload
Distinct buyers per dayDistinct buyers per day
Uptime 2 of 29 completed days below 100%
uptime below 100%, to scale
- Volume 30d
- $0.43
- Uptime
- 2 of 29 completed days below 100%
More charts
Response time daily average, ms min 330ms, avg 554ms, max 816ms
10-07 to 11-05* UTC
Scores over time
x402 compliance low 14/14, high 14/14
10-07 to 11-05* UTC
Price percentile in Finance own low to high; exact values below
10-07 to 11-05* UTC
Site signals present (of 6) own low to high; exact values below
10-07 to 11-05* UTC
Scores: one day per column, 10-07 to 11-05*, on the columns of Response time. Uptime held below 100% on some days in this window, including any partial day. Daily readings remain in the Uptime strip and Values. The checklist grew from 11 to 14 checks on 2026-07-28, before this window. Pillar lines use their own low and high. Exact dated readings are available in each readout and in Values.
Each series spans only the dates it has data for. Every series is also served as JSON at /api, /scores, /volume and /buyers.
Values
* today so far, partial (UTC).
The uptime summary counts completed UTC days only. The strip, readouts and table retain today's partial reading.
Daily snapshot total, 30d: $0.81, peak $0.38 on 10-15. The visible 30d total in Traction comes from the latest assessment. These sources can differ in their window, refresh time, cent rounding and shared-address attribution.
Daily address snapshots: 2026-10-07 to 2026-11-05 UTC; * today so far, partial (UTC). Daily snapshots store cents. A recorded $0.00 with settlements cannot distinguish exact zero from volume rounded away. Lost precision is unavailable here.
Settlement volume uses the stored USD valuation of tracked payments; it is distinct from token quantities. USD-pegged assets are valued at 1 USD per token in these rollups. The measured settlement floor does not cover all payments to this service.
Assessment history last recorded at . Each UTC day uses its last recorded run; missing readings stay unmeasured. Assessment history JSON · Measurement methodology.
| Day | Volume | Buyers | Settlements | Uptime | Response | Compliance | Price percentile | Site signals |
|---|---|---|---|---|---|---|---|---|
| 2026-10-07 | no data | no data | no data | 100% | 656.32ms | 14/14 | p69 | 1/6 |
| 2026-10-08 | no data | no data | no data | 97.78% | 595.10ms | 14/14 | p70 | 1/6 |
| 2026-10-09 | no data | no data | no data | 100% | 816.30ms | 14/14 | p70 | 1/6 |
| 2026-10-10 | no data | no data | no data | 100% | 717.83ms | 14/14 | p69 | 1/6 |
| 2026-10-11 | no data | no data | no data | 100% | 696.27ms | 14/14 | p70 | 1/6 |
| 2026-10-12 | no data | no data | no data | 100% | 555.62ms | 14/14 | p70 | 1/6 |
| 2026-10-13 | no data | no data | no data | 100% | 669.98ms | 14/14 | p70 | 1/6 |
| 2026-10-14 | no data | no data | no data | 100% | 704.61ms | 14/14 | p70 | 1/6 |
| 2026-10-15 | $0.38 | 1 | 10 | 100% | 618.67ms | 14/14 | p70 | 1/6 |
| 2026-10-16 | $0.03 | 2 | 5 | 100% | 507.93ms | 14/14 | p31 | 2/6 |
| 2026-10-17 | $0.02 | 2 | 3 | 100% | 576.58ms | 14/14 | p31 | 2/6 |
| 2026-10-18 | no data | no data | no data | 100% | 638.33ms | 14/14 | p31 | 5/6 |
| 2026-10-19 | $0.01 | 2 | 2 | 100% | 578.90ms | 14/14 | p31 | 5/6 |
| 2026-10-20 | no data | no data | no data | 100% | 505.36ms | 14/14 | p31 | 5/6 |
| 2026-10-21 | no data | no data | no data | 100% | 461.33ms | 14/14 | p31 | 5/6 |
| 2026-10-22 | no data | no data | no data | 100% | 439.60ms | 14/14 | p31 | 5/6 |
| 2026-10-23 | no data | no data | no data | 100% | 520.53ms | 14/14 | p31 | 5/6 |
| 2026-10-24 | no data | no data | no data | 100% | 386.93ms | 14/14 | p31 | 5/6 |
| 2026-10-25 | no data | no data | no data | 100% | 560.85ms | 14/14 | p31 | 5/6 |
| 2026-10-26 | no data | no data | no data | 100% | 668.35ms | 14/14 | p31 | 5/6 |
| 2026-10-27 | no data | no data | no data | 100% | 547.00ms | 14/14 | p29 | 5/6 |
| 2026-10-28 | no data | no data | no data | 100% | 421.66ms | 14/14 | p29 | 5/6 |
| 2026-10-29 | no data | no data | no data | 100% | 330.38ms | 14/14 | p29 | 5/6 |
| 2026-10-30 | no data | no data | no data | 100% | 488.71ms | 14/14 | p29 | 5/6 |
| 2026-10-31 | $0.01 | 1 | 1 | 100% | 470.80ms | 14/14 | p29 | 5/6 |
| 2026-11-01 | no data | no data | no data | 100% | 417.24ms | 14/14 | p29 | 5/6 |
| 2026-11-02 | $0.13 | 2 | 5 | 98.86% | 431.59ms | 14/14 | p29 | 5/6 |
| 2026-11-03 | $0.18 | 1 | 10 | 100% | 657.13ms | 14/14 | p29 | 5/6 |
| 2026-11-04 | $0.02 | 4 | 4 | 100% | 560.99ms | 14/14 | p29 | 5/6 |
| 2026-11-05* | $0.03 | 4 | 6 | 100% | 415.47ms | 14/14 | p29 | 5/6 |
Alternatives in Finance
5 of 135 other ranked services in Finance, ordered by the same measured score.
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Markdown
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