SpendTheBits
payment-ready until 2026-11-15
Pay-per-call wallet and DeFi safety data from the SpendTheBits non-custodial wallet, paid in USDC with stock x402 clients (Base first, Arc second).
Compare: all stock market APIs · all sanctions screening APIs
Call it x402 v2
x402 v2
- Base URL
- https://x402.spendthebits.com/@superappstb
- Payment
- x402 v2, header channel
$ curl -i 'https://x402.spendthebits.com/@superappstb/address-risk/' An unpaid request returns HTTP 402 with the payment terms. Sign a payment authorization, then retry with the PAYMENT-SIGNATURE header.
Endpoints 6 paid routes on x402.spendthebits.com
GET/address-risk/ Arbitrum One+Base+Pol $0.003since 11-07
GET/deposit-check/ Arbitrum One+Base+Pol $0.02since 11-07
GET/proof/ Arbitrum One+Base+Pol $0.01since 11-07
GET/protocol-watch/ Arbitrum One+Base+Pol $0.01since 11-07
GET/reputation/ Arbitrum One+Base+Pol $0.05since 11-07
GET/yield-safety/ Arbitrum One+Base+Pol $0.005since 11-07
Prices as captured in the 402 response: median $0.01 across the 6 endpoints, unchanged since first capture.
Example 402 response
Endpoints and prices
| Method | Path | Description | Price | Network | Asset | 402 channel | Captured |
|---|---|---|---|---|---|---|---|
| GET | / | Sanctions/scam screening verdict for one address (?address=, optional ?network=mainnet|testnet) plus whether it is a verified token contract STB recognises. The same screen that gates every send in the STB wallet. | $0.003 | Arbitrum One+ | USDC, USD Coin | header | since 11-07 |
| GET | / | One call before a stablecoin vault deposit: ok / caution / avoid with every reason, built from STB's 0-100 safety score, a sanctions and scam screen of the vault contract, and protocol changes detected in the last 30 days. Every vetted vault, or one by ?venue=<id|pool address>. | $0.02 | Arbitrum One+ | USDC, USD Coin | header | since 11-07 |
| GET | / | Official $0.01 proof-of-life resource for SpendTheBits x402: returns a JSON heartbeat. Pay it to verify your agent's x402 client end to end. | $0.01 | Arbitrum One+ | USDC, USD Coin | header | since 11-07 |
| GET | / | Changes detected in the protocols behind STB's Earn and FXRP: Firelight, Flare FAssets, Morpho, Tether and Flare. On-chain parameter changes and official announcements, as the reviewed notice shown to users. ?protocol= and ?days=1-90 (default 30). | $0.01 | Arbitrum One+ | USDC, USD Coin, GatewayWalletBatched | header | since 11-07 |
| GET | / | Eight lines on one contract before money moves: exit amount, yield split, audit links, incident note, admin, age, holder concentration, and governance. Unknown stays unknown. No score. | $0.05 | Arbitrum One+ | USDC, USD Coin | header | since 11-07 |
| GET | / | 0-100 safety score with components (protocol trust, TVL depth, audits, track record), observed and risk-adjusted APR, and whether STB's Auto-Defense would exit · for every vetted stablecoin vault, or one by ?venue=<id|pool address>. | $0.005 | Arbitrum One+ | USDC, USD Coin | header | since 11-07 |
Payment evidence
402 payload captured at . Check evidence JSON · Measurement methodology.
First of 6 payloads captured by the monitor.
335 lines, scroll inside
{
"error": "PAYMENT-SIGNATURE header required.",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x0121240e6DB9dEbeE115bD92BB64B96927EEEf7f",
"amount": "20000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0x3600000000000000000000000000000000000000",
"extra": {
"name": "USDC",
"version": "2"
},
"payTo": "0x0121240e6DB9dEbeE115bD92BB64B96927EEEf7f",
"amount": "20000",
"scheme": "exact",
"network": "eip155:5042",
"maxTimeoutSeconds": 300
},
{
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x0121240e6DB9dEbeE115bD92BB64B96927EEEf7f",
"amount": "20000",
"scheme": "exact",
"network": "eip155:137",
"maxTimeoutSeconds": 300
},
{
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x0121240e6DB9dEbeE115bD92BB64B96927EEEf7f",
"amount": "20000",
"scheme": "exact",
"network": "eip155:42161",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://x402.spendthebits.com/@superappstb/deposit-check/",
"tags": [
"defi",
"risk",
"due-diligence",
"vault",
"stablecoin"
],
"iconUrl": "https://superapp.spendthebits.com/icon.png",
"mimeType": "application/json",
"description": "One call before a stablecoin vault deposit: ok / caution / avoid with every reason, built from STB's 0-100 safety score, a sanctions and scam screen of the vault contract, and protocol changes detected in the last 30 days. Every vetted vault, or one by ?venue=<id|pool address>.",
"serviceName": "SpendTheBits"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {}
},
"output": {
"type": "json",
"example": {
"note": "Worked example. The live answer is in the paid response.",
"count": 1,
"checks": [
{
"venue": {
"name": "…",
"observed_apr": "0.0000",
"safety_score": 56
},
"notices": [],
"reasons": [
{
"code": "below_floor",
"level": "caution",
"sentence": "Safety score 56 is under the default floor of 60; STB's Auto-Defense would act on it."
}
],
"verdict": "caution",
"contract_screen": {
"warn": false,
"listed": false,
"source": null,
"category": null
}
}
],
"network": "mainnet",
"product": "deposit-check"
}
}
},
"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",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [],
"properties": {
"venue": {
"type": "string",
"maxLength": 96,
"description": "Venue id (UUID) or vault/pool contract address; omit it to check every vetted mainnet vault"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"product",
"count",
"checks"
],
"properties": {
"as_of": {
"type": "string"
},
"basis": {
"type": "string"
},
"count": {
"type": "integer"
},
"checks": {
"type": "array",
"items": {
"type": "object",
"required": [
"verdict",
"reasons",
"venue",
"contract_screen",
"notices"
],
"properties": {
"venue": {
"type": "object"
},
"notices": {
"type": "array",
"items": {
"type": "object",
"required": [
"protocol",
"severity",
"title"
],
"properties": {
"id": {
"type": "string"
},
"body": {
"type": "string"
},
"kind": {
"type": "string"
},
"live": {
"type": "boolean",
"description": "true while the notice is shown to STB users"
},
"title": {
"type": "string"
},
"protocol": {
"type": "string"
},
"severity": {
"enum": [
"info",
"warn",
"critical"
],
"type": "string"
},
"source_url": {
"type": [
"string",
"null"
]
},
"detected_at": {
"type": "string"
}
}
}
},
"reasons": {
"type": "array",
"items": {
"type": "object",
"required": [
"level",
"code",
"sentence"
],
"properties": {
"code": {
"type": "string"
},
"level": {
"enum": [
"caution",
"avoid"
],
"type": "string"
},
"sentence": {
"type": "string"
}
}
}
},
"verdict": {
"enum": [
"ok",
"caution",
"avoid"
],
"type": "string",
"description": "The worst level among the reasons; ok when there are none"
},
"contract_screen": {
"type": "object",
"required": [
"listed"
],
"properties": {
"warn": {
"type": "boolean"
},
"listed": {
"type": "boolean"
},
"source": {
"type": [
"string",
"null"
]
},
"category": {
"type": [
"string",
"null"
]
}
}
},
"safety_warnings": {
"type": "array",
"items": {
"type": "string"
}
},
"protocols_watched": {
"type": "array",
"items": {
"type": "string"
}
}
}
}
},
"network": {
"type": "string"
},
"product": {
"type": "string",
"const": "deposit-check"
},
"methodology": {
"type": "string"
}
}
}
}
}
}
}
}
},
"x402Version": 2
} Other captured 402 responses (5)
Captured payload 2 of 6
{
"error": "PAYMENT-SIGNATURE header required.",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xF52ceDE1a0f2b95dfa703790005F2542CBA45678",
"amount": "3000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0x3600000000000000000000000000000000000000",
"extra": {
"name": "USDC",
"version": "2"
},
"payTo": "0xF52ceDE1a0f2b95dfa703790005F2542CBA45678",
"amount": "3000",
"scheme": "exact",
"network": "eip155:5042",
"maxTimeoutSeconds": 300
},
{
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xF52ceDE1a0f2b95dfa703790005F2542CBA45678",
"amount": "3000",
"scheme": "exact",
"network": "eip155:137",
"maxTimeoutSeconds": 300
},
{
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xF52ceDE1a0f2b95dfa703790005F2542CBA45678",
"amount": "3000",
"scheme": "exact",
"network": "eip155:42161",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://x402.spendthebits.com/@superappstb/address-risk/",
"tags": [
"compliance",
"sanctions",
"risk",
"security",
"wallet"
],
"iconUrl": "https://superapp.spendthebits.com/icon.png",
"mimeType": "application/json",
"description": "Sanctions/scam screening verdict for one address (?address=, optional ?network=mainnet|testnet) plus whether it is a verified token contract STB recognises. The same screen that gates every send in the STB wallet.",
"serviceName": "SpendTheBits"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"address": "0x8589427373D6D84E98730D7795D8f6f8731FDA16",
"network": "mainnet"
}
},
"output": {
"type": "json",
"example": {
"family": "evm",
"address": "0x…",
"network": "mainnet",
"verdict": "ok",
"evidence": [],
"screening": {
"listed": false,
"source": null,
"category": null
},
"attribution": null,
"token_contract": {
"known": false
}
}
}
},
"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",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"address"
],
"properties": {
"address": {
"type": "string",
"maxLength": 96,
"minLength": 20,
"description": "Address to screen: an EVM 0x address, or another chain's address (Solana, TRON, XRPL, Bitcoin ...)"
},
"network": {
"enum": [
"mainnet",
"testnet"
],
"type": "string",
"description": "mainnet (default) or testnet"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"address",
"network",
"family",
"verdict",
"screening",
"token_contract",
"evidence"
],
"properties": {
"docs": {
"type": "string"
},
"as_of": {
"type": "string"
},
"family": {
"enum": [
"evm",
"other"
],
"type": "string"
},
"address": {
"type": "string"
},
"network": {
"enum": [
"mainnet",
"testnet"
],
"type": "string"
},
"verdict": {
"enum": [
"ok",
"warn",
"block"
],
"type": "string",
"description": "block = listed (sanctions/ransomware); warn = publicly reported scam"
},
"evidence": {
"type": "array",
"items": {
"type": "string"
}
},
"screening": {
"type": "object",
"required": [
"listed"
],
"properties": {
"listed": {
"type": "boolean"
},
"source": {
"type": [
"string",
"null"
]
},
"category": {
"type": [
"string",
"null"
]
}
}
},
"attribution": {
"description": "Credit the data source's licence asks for, when one matched"
},
"token_contract": {
"type": "object",
"required": [
"known"
],
"properties": {
"chain": {
"type": "string"
},
"known": {
"type": "boolean"
},
"symbol": {
"type": "string"
}
}
}
}
}
}
}
}
}
}
},
"x402Version": 2
}Captured payload 3 of 6
{
"error": "PAYMENT-SIGNATURE header required.",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x44818760C35821d793cf69275DdcFc012B3cDa11",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0x3600000000000000000000000000000000000000",
"extra": {
"name": "USDC",
"version": "2"
},
"payTo": "0x44818760C35821d793cf69275DdcFc012B3cDa11",
"amount": "5000",
"scheme": "exact",
"network": "eip155:5042",
"maxTimeoutSeconds": 300
},
{
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x44818760C35821d793cf69275DdcFc012B3cDa11",
"amount": "5000",
"scheme": "exact",
"network": "eip155:137",
"maxTimeoutSeconds": 300
},
{
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x44818760C35821d793cf69275DdcFc012B3cDa11",
"amount": "5000",
"scheme": "exact",
"network": "eip155:42161",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://x402.spendthebits.com/@superappstb/yield-safety/",
"tags": [
"defi",
"yield",
"risk",
"stablecoin",
"usdc"
],
"iconUrl": "https://superapp.spendthebits.com/icon.png",
"mimeType": "application/json",
"description": "0-100 safety score with components (protocol trust, TVL depth, audits, track record), observed and risk-adjusted APR, and whether STB's Auto-Defense would exit — for every vetted stablecoin vault, or one by ?venue=<id|pool address>.",
"serviceName": "SpendTheBits"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {}
},
"output": {
"type": "json",
"example": {
"as_of": "2026-09-23T00:00:00+00:00",
"count": 1,
"venues": [
{
"id": "…",
"name": "Aave v3 USDC",
"asset": "USDC",
"chain": "polygon",
"audited": true,
"enabled": true,
"factors": [
{
"max": 30,
"name": "Protocol trust",
"detail": "Aave v3",
"points": 30
}
],
"tvl_usd": "180000000",
"chain_id": 137,
"protocol": "aave_v3",
"incidents": 0,
"audit_firms": 4,
"auto_defense": {
"floor": 60,
"reason": null,
"would_exit": false
},
"observed_apr": "0.0412",
"pool_address": "0x…",
"safety_score": 92,
"launched_days_ago": 900,
"risk_adjusted_apr": "0.037904"
}
],
"network": "mainnet",
"methodology": "https://superapp.spendthebits.com/help/yield-safety-score"
}
}
},
"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",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [],
"properties": {
"venue": {
"type": "string",
"maxLength": 96,
"description": "Venue id (UUID) or vault/pool contract address; omit it to get every vetted mainnet vault"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"as_of",
"network",
"count",
"venues",
"methodology"
],
"properties": {
"as_of": {
"type": "string",
"description": "When this answer was computed (ISO 8601)"
},
"count": {
"type": "integer"
},
"venues": {
"type": "array",
"items": {
"type": "object",
"required": [
"id",
"name",
"protocol",
"asset",
"pool_address",
"enabled",
"safety_score",
"factors",
"observed_apr",
"risk_adjusted_apr",
"tvl_usd",
"auto_defense"
],
"properties": {
"id": {
"type": "string"
},
"name": {
"type": "string"
},
"asset": {
"type": "string"
},
"chain": {
"type": "string"
},
"audited": {
"type": "boolean"
},
"enabled": {
"type": "boolean"
},
"factors": {
"type": "array",
"items": {
"type": "object"
},
"description": "The components the score is the sum of"
},
"tvl_usd": {
"type": "string"
},
"chain_id": {
"type": [
"integer",
"null"
]
},
"protocol": {
"type": "string"
},
"incidents": {
"type": "integer"
},
"scored_at": {
"type": [
"string",
"null"
]
},
"audit_firms": {
"type": "integer"
},
"auto_defense": {
"type": "object",
"required": [
"floor",
"would_exit"
],
"properties": {
"floor": {
"type": "integer"
},
"reason": {
"type": [
"string",
"null"
]
},
"would_exit": {
"type": "boolean"
}
}
},
"observed_apr": {
"type": "string",
"description": "Decimal fraction, e.g. 0.0412 = 4.12%"
},
"pool_address": {
"type": "string"
},
"safety_score": {
"type": "integer",
"maximum": 100,
"minimum": 0
},
"launched_days_ago": {
"type": "integer"
},
"risk_adjusted_apr": {
"type": "string"
}
}
}
},
"network": {
"type": "string"
},
"methodology": {
"type": "string",
"description": "URL of the scoring method"
}
}
}
}
}
}
}
}
},
"x402Version": 2
}Captured payload 4 of 6
{
"error": "PAYMENT-SIGNATURE header required.",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xF327c8E5116A7414Db63E4f95d47D2A043A0a857",
"amount": "50000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0x3600000000000000000000000000000000000000",
"extra": {
"name": "USDC",
"version": "2"
},
"payTo": "0xF327c8E5116A7414Db63E4f95d47D2A043A0a857",
"amount": "50000",
"scheme": "exact",
"network": "eip155:5042",
"maxTimeoutSeconds": 300
},
{
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xF327c8E5116A7414Db63E4f95d47D2A043A0a857",
"amount": "50000",
"scheme": "exact",
"network": "eip155:137",
"maxTimeoutSeconds": 300
},
{
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xF327c8E5116A7414Db63E4f95d47D2A043A0a857",
"amount": "50000",
"scheme": "exact",
"network": "eip155:42161",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://x402.spendthebits.com/@superappstb/reputation/",
"tags": [
"defi",
"risk",
"due-diligence",
"vault",
"security"
],
"iconUrl": "https://superapp.spendthebits.com/icon.png",
"mimeType": "application/json",
"description": "Eight lines on one contract before money moves: exit amount, yield split, audit links, incident note, admin, age, holder concentration, and governance. Unknown stays unknown. No score.",
"serviceName": "SpendTheBits"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"address": "0x1111111111111111111111111111111111111111",
"chain_id": "1"
}
},
"output": {
"type": "json",
"example": {
"lines": [
{
"key": "yield",
"status": "unknown",
"sentence": "Yield split unknown. The headline rate is not income we could separate."
}
],
"owner": null,
"amount": null,
"address": "0x1111111111111111111111111111111111111111",
"product": "reputation",
"category": null,
"chain_id": 1,
"sentences": [
"Yield split unknown. The headline rate is not income we could separate."
],
"line_count": 8,
"methodology": "reputation-v1",
"send_screen": "clear",
"valid_until": "2026-09-28T00:10:00Z",
"completeness": "0 of 8 lines observed",
"observed_count": 0,
"screen_sentence": "",
"same_asset_vaults": []
}
}
},
"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",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"chain_id",
"address"
],
"properties": {
"owner": {
"type": "string",
"description": "Wallet address, optional"
},
"amount": {
"type": "string",
"description": "Amount you may allocate"
},
"address": {
"type": "string",
"description": "Contract address"
},
"chain_id": {
"type": "string",
"description": "EVM chain id"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"product",
"methodology",
"chain_id",
"address",
"valid_until",
"send_screen",
"lines",
"observed_count",
"line_count",
"completeness",
"sentences"
],
"properties": {
"lines": {
"type": "array",
"items": {
"type": "object",
"required": [
"key",
"status",
"sentence"
],
"properties": {
"key": {
"type": "string"
},
"status": {
"type": "string",
"description": "observed, unknown or not_on_this_card"
},
"sentence": {
"type": "string"
}
}
}
},
"owner": {
"type": [
"string",
"null"
]
},
"amount": {
"type": [
"string",
"null"
]
},
"address": {
"type": "string"
},
"product": {
"type": "string",
"const": "reputation"
},
"category": {
"type": [
"string",
"null"
]
},
"chain_id": {
"type": [
"integer",
"string"
]
},
"sentences": {
"type": "array",
"items": {
"type": "string"
}
},
"line_count": {
"type": "integer"
},
"methodology": {
"type": "string"
},
"send_screen": {
"enum": [
"clear",
"blocked"
],
"type": "string"
},
"valid_until": {
"type": "string",
"description": "The answer is cached until then (ISO 8601, UTC)"
},
"completeness": {
"type": "string"
},
"observed_count": {
"type": "integer"
},
"screen_sentence": {
"type": "string"
},
"same_asset_vaults": {
"type": "array",
"items": {
"type": "object"
}
}
}
}
}
}
}
}
},
"sign-in-with-x": {
"info": {
"uri": "https://x402.spendthebits.com/@superappstb/reputation/",
"nonce": "2fb522b3647256dee982b601808c4404",
"domain": "x402.spendthebits.com",
"version": "1",
"issuedAt": "2026-11-07T22:38:00.767Z",
"resources": [
"https://x402.spendthebits.com/@superappstb/reputation/"
],
"statement": "Sign in to use your pass",
"expirationTime": "2026-11-07T22:43:00.767Z"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"domain",
"address",
"uri",
"version",
"chainId",
"type",
"nonce",
"issuedAt",
"signature"
],
"properties": {
"uri": {
"type": "string",
"format": "uri"
},
"type": {
"type": "string"
},
"nonce": {
"type": "string"
},
"domain": {
"type": "string"
},
"address": {
"type": "string"
},
"chainId": {
"type": "string"
},
"version": {
"type": "string"
},
"issuedAt": {
"type": "string",
"format": "date-time"
},
"notBefore": {
"type": "string",
"format": "date-time"
},
"requestId": {
"type": "string"
},
"resources": {
"type": "array",
"items": {
"type": "string",
"format": "uri"
}
},
"signature": {
"type": "string"
},
"statement": {
"type": "string"
},
"expirationTime": {
"type": "string",
"format": "date-time"
}
}
},
"supportedChains": [
{
"type": "eip191",
"chainId": "eip155:8453"
},
{
"type": "eip191",
"chainId": "eip155:5042"
},
{
"type": "eip191",
"chainId": "eip155:137"
},
{
"type": "eip191",
"chainId": "eip155:42161"
}
]
}
},
"x402Version": 2
}Captured payload 5 of 6
{
"error": "PAYMENT-SIGNATURE header required.",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xfAA1D550E9B012f3586F4518391f50aba416e87b",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0x3600000000000000000000000000000000000000",
"extra": {
"name": "USDC",
"version": "2"
},
"payTo": "0xfAA1D550E9B012f3586F4518391f50aba416e87b",
"amount": "10000",
"scheme": "exact",
"network": "eip155:5042",
"maxTimeoutSeconds": 300
},
{
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xfAA1D550E9B012f3586F4518391f50aba416e87b",
"amount": "10000",
"scheme": "exact",
"network": "eip155:137",
"maxTimeoutSeconds": 300
},
{
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xfAA1D550E9B012f3586F4518391f50aba416e87b",
"amount": "10000",
"scheme": "exact",
"network": "eip155:42161",
"maxTimeoutSeconds": 300
},
{
"asset": "0x3600000000000000000000000000000000000000",
"extra": {
"name": "GatewayWalletBatched",
"version": "1",
"verifyingContract": "0x77777777Dcc4d5A8B6E418Fd04D8997ef11000eE"
},
"payTo": "0xBe5cb96D1Bd2B4d5D5C0A1f16266cc0ba2849D30",
"amount": "10000",
"scheme": "exact",
"network": "eip155:5042",
"maxTimeoutSeconds": 604900
}
],
"resource": {
"url": "https://x402.spendthebits.com/@superappstb/protocol-watch/",
"tags": [
"defi",
"risk",
"monitoring",
"governance",
"xrp"
],
"iconUrl": "https://superapp.spendthebits.com/icon.png",
"mimeType": "application/json",
"description": "Changes detected in the protocols behind STB's Earn and FXRP: Firelight, Flare FAssets, Morpho, Tether and Flare. On-chain parameter changes and official announcements, as the reviewed notice shown to users. ?protocol= and ?days=1-90 (default 30).",
"serviceName": "SpendTheBits"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"days": "30",
"protocol": "firelight"
}
},
"output": {
"type": "json",
"example": {
"count": 1,
"notices": [
{
"id": "…",
"body": "Worked example. Live notices are in the paid response.",
"kind": "onchain",
"live": false,
"title": "Withdrawal period changed",
"protocol": "firelight",
"severity": "warn",
"source_url": null,
"detected_at": "2026-09-23T00:00:00+00:00"
}
],
"product": "protocol-watch",
"watched": [
"firelight",
"fassets",
"morpho",
"tether",
"flare"
],
"protocol": null,
"window_days": 30
}
}
},
"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",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [],
"properties": {
"days": {
"type": "string",
"maxLength": 2,
"description": "How far back to look, 1 to 90 days (default 30)"
},
"protocol": {
"enum": [
"firelight",
"fassets",
"morpho",
"tether",
"flare"
],
"type": "string",
"description": "One protocol; omit for all five"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"product",
"window_days",
"watched",
"count",
"notices"
],
"properties": {
"docs": {
"type": "string"
},
"as_of": {
"type": "string"
},
"count": {
"type": "integer"
},
"notices": {
"type": "array",
"items": {
"type": "object",
"required": [
"protocol",
"severity",
"title"
],
"properties": {
"id": {
"type": "string"
},
"body": {
"type": "string"
},
"kind": {
"type": "string"
},
"live": {
"type": "boolean",
"description": "true while the notice is shown to STB users"
},
"title": {
"type": "string"
},
"protocol": {
"type": "string"
},
"severity": {
"enum": [
"info",
"warn",
"critical"
],
"type": "string"
},
"source_url": {
"type": [
"string",
"null"
]
},
"detected_at": {
"type": "string"
}
}
}
},
"product": {
"type": "string",
"const": "protocol-watch"
},
"watched": {
"type": "array",
"items": {
"type": "string"
}
},
"protocol": {
"type": [
"string",
"null"
]
},
"window_days": {
"type": "integer"
}
}
}
}
}
}
}
}
},
"x402Version": 2
}Captured payload 6 of 6
{
"error": "PAYMENT-SIGNATURE header required.",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x59D7C809e709E1B64a26536eCb0757cf8C964618",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0x3600000000000000000000000000000000000000",
"extra": {
"name": "USDC",
"version": "2"
},
"payTo": "0x59D7C809e709E1B64a26536eCb0757cf8C964618",
"amount": "10000",
"scheme": "exact",
"network": "eip155:5042",
"maxTimeoutSeconds": 300
},
{
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x59D7C809e709E1B64a26536eCb0757cf8C964618",
"amount": "10000",
"scheme": "exact",
"network": "eip155:137",
"maxTimeoutSeconds": 300
},
{
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x59D7C809e709E1B64a26536eCb0757cf8C964618",
"amount": "10000",
"scheme": "exact",
"network": "eip155:42161",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://x402.spendthebits.com/@superappstb/proof/",
"tags": [
"x402",
"usdc"
],
"iconUrl": "https://superapp.spendthebits.com/icon.png",
"mimeType": "application/json",
"description": "Official $0.01 proof-of-life resource for SpendTheBits x402: returns a JSON heartbeat. Pay it to verify your agent's x402 client end to end.",
"serviceName": "SpendTheBits"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {}
},
"output": {
"type": "json"
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string"
},
"method": {
"type": "string"
},
"queryParams": {
"type": "object"
}
}
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
}
}
}
}
}
},
"sign-in-with-x": {
"info": {
"uri": "https://x402.spendthebits.com/@superappstb/proof/",
"nonce": "adfb77e27c8519e68bf282a2d9374132",
"domain": "x402.spendthebits.com",
"version": "1",
"issuedAt": "2026-11-07T22:38:01.304Z",
"resources": [
"https://x402.spendthebits.com/@superappstb/proof/"
],
"statement": "Sign in to use your pass",
"expirationTime": "2026-11-07T22:43:01.304Z"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"domain",
"address",
"uri",
"version",
"chainId",
"type",
"nonce",
"issuedAt",
"signature"
],
"properties": {
"uri": {
"type": "string",
"format": "uri"
},
"type": {
"type": "string"
},
"nonce": {
"type": "string"
},
"domain": {
"type": "string"
},
"address": {
"type": "string"
},
"chainId": {
"type": "string"
},
"version": {
"type": "string"
},
"issuedAt": {
"type": "string",
"format": "date-time"
},
"notBefore": {
"type": "string",
"format": "date-time"
},
"requestId": {
"type": "string"
},
"resources": {
"type": "array",
"items": {
"type": "string",
"format": "uri"
}
},
"signature": {
"type": "string"
},
"statement": {
"type": "string"
},
"expirationTime": {
"type": "string",
"format": "date-time"
}
}
},
"supportedChains": [
{
"type": "eip191",
"chainId": "eip155:8453"
},
{
"type": "eip191",
"chainId": "eip155:5042"
},
{
"type": "eip191",
"chainId": "eip155:137"
},
{
"type": "eip191",
"chainId": "eip155:42161"
}
]
}
},
"x402Version": 2
}Can I trust it score from our own monitoring
score from our own monitoring
98/100 Strong
#2 of 140 in Finance. Bands: strong 93+, solid 75+, mixed 55+, weak below 55.
- Reliability
- 100% uptime since 11-07
- Compliance
- A 14/14 checks pass
- Price
- $0.003 to $0.05 p24 in Finance
- Risk
- clean no risk flag
- Traction
- ---
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 2026-11-07. Last up 2026-11-08.
── 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, 100% uptime, latest daily rollup (no 30d window yet), 206ms response p95, x402 compliance 14 of 14, $0.003 price against the category. 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 140 listings, this one among them: the same 140 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.
All measured facts
What it does
Pay-per-call wallet and DeFi safety data from the SpendTheBits non-custodial wallet, paid in USDC with stock x402 clients (Base first, Arc second). Address sanctions and scam screening, deposit checks, a Yield Safety Score for lending venues, DeFi reputation and Protocol Watch notices on the venues we route to. Every payment settles to an address only the seller's own keys control. Manifest: https://x402.spendthebits.com/.well-known/x402
SpendTheBits is a listed x402 Finance API. Captured payment terms name Arbitrum One, Base, Polygon. 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: 2026-10-10 to 2026-11-08 UTC. Daily monitoring and settlement rollups do not expose their computation time; a bucket date is not an update timestamp. 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
- -
- uptime 7d
- -
- uptime 30d
- -
- uptime 90d
- -
- response p95
- 206ms
- avg response
- 206ms
- total checks
- 1
Measured on the unpaid 402 handshake, not the paid call. A service can 402 correctly and still fail after payment.
- price (min)
- $0.003
- price (max)
- $0.05
- category percentile (min)
- p24 in Finance
- category percentile (max)
- p57 in Finance
- endpoints / prices
- 6 / 5
- model
- tiered
- stability
- 100%
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
- 2675d
- registrar
- GoDaddy.com, LLC
- hosting
- custom
- domain created
- 2019-07-12
Identity facts, not a risk score.
On-chain traction has not been assessed for this service yet.
- member since
- 2026-11-07
Recent checks
| Checked at (UTC) | Status | HTTP | Response | Endpoints |
|---|---|---|---|---|
| Online | 402 | 243ms | 6 | |
| Online | 402 | 176ms | 6 | |
| Online | 402 | 219ms | 6 | |
| Online | 402 | 235ms | 6 | |
| Online | 402 | 212ms | 6 | |
| Online | 402 | 228ms | 6 | |
| Online | 402 | 169ms | 6 | |
| Online | 402 | 216ms | 6 | |
| Online | 402 | 184ms | 6 | |
| Online | 402 | 188ms | 6 | |
| Online | 402 | 206ms | 6 |
Changes0 in 30d
No changes recorded in the last 30 days.
Over time
On-chain volume
On-chain traction has not been assessed for this service yet.
Uptime 100% on all 1 completed day
- Uptime
- 100% on all 1 completed day
On-chain traction has not been assessed for this service yet.
More charts
Response time daily average, ms min 198ms, avg 204ms, max 210ms
10-10 to 11-08* UTC
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.
Assessment history last recorded at . Each UTC day uses its last recorded run; missing readings stay unmeasured. Assessment history JSON · Measurement methodology.
| Day | Uptime | Response | Compliance | Price percentile | Site signals |
|---|---|---|---|---|---|
| 2026-11-07 | 100% | 198.50ms | 14/14 | p24 | 4/6 |
| 2026-11-08* | 100% | 210.50ms | no data | no data | no data |
Alternatives in Finance
5 of 139 other ranked services in Finance, ordered by the same measured score.
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