M2M Sentinel
Verification PAYMENT-READYpayment-ready until 2026-09-21
Deterministic Base mainnet transaction preflight and static bytecode capability evidence with PUSH-aware opcode analysis, proxy and EIP-7702 resolution, explicit unknown states, and x402 v2 access. It does not provide a safety guarantee.
Pay from $0.005 to $0.02 per request in USDC on Base, settled onchain via the x402 protocol, no signup, no API key needed.
measured since 2026-08-24 (start of our harvest window) · $0.79 all-time · settled via coinbase
VERDICT
ranking generation 3solid 82/100 #42 of 77 in Verification by measured score
What the score read on this service: status online, 99.7% uptime 30d, 2743ms 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.
It is a score inside Verification, 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 77 listings, this one among them. That set is wider than the 77 the position above is counted against, 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.
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.
ALTERNATIVES IN VERIFICATION
Other Verification services in this directory, ordered by the same measured score. The figures are ours: 30-day uptime from our own probes, 30-day settlement volume read on-chain (a conservative undercount, and null where we cannot measure it, never a zero).
| SERVICE | BAND | SCORE | UPTIME 30D | VOL 30D |
|---|---|---|---|---|
| scvd.store — evidence observatory for the x402 economy | strong | 93 | 100% | $1.0k |
| Rubric Protocol — Post-Quantum AI Attestation | solid | 93 | 100% | $12.22 |
| LION — Verified Company & Compliance Data | solid | 89 | 100% | $6.99 |
| IBANforge | solid | 88 | 99.8% | $0.08 |
| 10x402 | solid | 88 | 100% | $2.50 |
ASSESSMENT
updated 41m agoThe parts the verdict above is computed from, each with its proof. Click any chip. Measured values stay read-only; unknown is honest, and an unknown is never counted as a zero.
reliability 99.7%
- uptime 24h
- 100%
- uptime 7d
- 99.5%
- uptime 30d
- 99.7%
- uptime 90d
- 99.7%
- response p95
- 2743ms
- avg response
- 795ms
- total checks
- 1,015
Measured on the unpaid 402 handshake, not the paid call. A service can 402 correctly and still fail after payment.
compliance A (14/14)
14 of 14 x402 conformance checks pass. Full checklist below.
price $0.005 to $0.02 (p23 in Verification)
- price (min)
- $0.005
- price (max)
- $0.02
- category percentile (min)
- p23 in Verification
- category percentile (max)
- p30 in Verification
- endpoints / prices
- 6 / 3
- model
- tiered
- stability
- 100%
risk clean
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
- 25d
- registrar
- Cloudflare, Inc.
- hosting
- custom
- domain created
- 2026-08-15
Identity facts, not a risk score.
traction $0.755 30d · 13 buyers
- volume 30d
- $0.755
- buyers 30d
- 13
- settlements 30d
- 69
- measured since
- 2026-08-24 (start of our harvest window)
- last settlement
- 2026-09-13
- top buyer share
- 32% of 30d volume
- trend 7d vs 30d
- 0.26x the 30d daily rate
- networks
- eip155:8453
- volume all-time
- $0.79
- settlements all-time
- 69
- median settlement 30d
- $0.01
- max settlement 30d
- $0.02
- settled via
- coinbase ($0.76, 69 tx)
Conservative undercount: only USDC settlements via facilitators we measure are counted. A measured floor, not an estimate.
Top buyer share is a concentration signal, not part of the ranking score.
WHAT IT DOES
ai-derivedNo AI synthesis has been produced for this service yet.
ENDPOINTS
| METHOD | PATH | DESCRIPTION | PRICE | NETWORK | ASSET | 402 CHANNEL |
|---|---|---|---|---|---|---|
| GET | /v1/audit/0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 | $0.02 | Base | USDC | header | |
| GET | /v1/dex/metrics | $0.01 | Base | USDC | header | |
| GET | /v1/gas/fees | $0.005 | Base | USDC | header | |
| GET | /v1/security/score/0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 | $0.02 | Base | USDC | header | |
| GET | /v1/token/price/USDC | $0.005 | Base | USDC | header | |
| GET | /v1/whales/signals | $0.02 | Base | USDC | header |
REQUEST / RESPONSE EXAMPLE
An unpaid request to GET /v1/audit/0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.
curl -i 'https://api.m2msentinel.com/v1/audit/0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913'
// 402 response (captured by monitor) · 6 payloads · click to expand
[
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x6d6c398390cfb88f1cd42715b84906a0bd6652aa",
"amount": "20000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 120
}
],
"resource": {
"url": "https://api.m2msentinel.com/v1/audit/0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"tags": [
"base",
"contract",
"security",
"proxy",
"bytecode"
],
"mimeType": "application/json",
"description": "Before you sign: can this Base contract be paused, frozen, or have tokens minted by its owner, self-destruct, or delegate execution somewhere you have not seen? Returns the opcodes and selectors actually present in the deployed bytecode, resolves proxies and EIP-7702 delegated accounts to what really runs, and states the trust level behind the answer. Evidence for your policy, not a safety verdict.",
"serviceName": "M2M Sentinel"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"pathParams": {
"address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
},
"queryParams": {}
},
"output": {
"type": "json",
"example": {
"audit": {
"address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"analysisKind": "STATIC_BYTECODE_CAPABILITY_HEURISTIC",
"reachability": "NOT_ESTABLISHED",
"notASafetyGuarantee": true
},
"status": "SUCCESS"
}
}
},
"schema": {
"type": "object",
"$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",
"pattern": "^0x[0-9a-fA-F]{40}$",
"description": "A Base mainnet contract address."
}
}
},
"queryParams": {
"type": "object",
"properties": {}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"status"
],
"properties": {
"audit": {
"type": "object"
},
"status": {
"type": "string",
"const": "SUCCESS"
}
}
}
}
}
}
},
"routeTemplate": "/v1/audit/:address"
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x6d6c398390cfb88f1cd42715b84906a0bd6652aa",
"amount": "20000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 120
}
],
"resource": {
"url": "https://api.m2msentinel.com/v1/security/score/0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"tags": [
"base",
"contract",
"coverage",
"evidence",
"capabilities"
],
"mimeType": "application/json",
"description": "How completely could this Base contract be checked, and on what grade of evidence. Separates checked-and-clean from could-not-be-checked, which automated callers otherwise conflate. Explicitly not a safety score.",
"serviceName": "M2M Sentinel"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"pathParams": {
"address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
},
"queryParams": {}
},
"output": {
"type": "json",
"example": {
"status": "SUCCESS",
"address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"analysisKind": "STATIC_BYTECODE_CAPABILITY_HEURISTIC",
"reachability": "NOT_ESTABLISHED",
"notASafetyGuarantee": true
}
}
},
"schema": {
"type": "object",
"$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",
"pattern": "^0x[0-9a-fA-F]{40}$",
"description": "A Base mainnet contract address."
}
}
},
"queryParams": {
"type": "object",
"properties": {}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"status"
],
"properties": {
"status": {
"type": "string",
"const": "SUCCESS"
},
"address": {
"type": "string"
},
"capabilityScore": {
"type": [
"number",
"null"
]
}
}
}
}
}
}
},
"routeTemplate": "/v1/security/score/:address"
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x6d6c398390cfb88f1cd42715b84906a0bd6652aa",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 120
}
],
"resource": {
"url": "https://api.m2msentinel.com/v1/gas/fees",
"tags": [
"base",
"gas",
"fees",
"provenance"
],
"mimeType": "application/json",
"description": "What a Base transaction costs right now, with the RPC provider and trust level behind the number, so a caller can tell a credentialed reading from a degraded one before pricing a transaction.",
"serviceName": "M2M Sentinel"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {}
},
"output": {
"type": "json",
"example": {
"status": "SUCCESS",
"network": "eip155:8453"
}
}
},
"schema": {
"type": "object",
"$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": {}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"status"
],
"properties": {
"status": {
"type": "string",
"const": "SUCCESS"
},
"network": {
"type": "string"
},
"gasPrice": {
"type": "object"
}
}
}
}
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x6d6c398390cfb88f1cd42715b84906a0bd6652aa",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 120
}
],
"resource": {
"url": "https://api.m2msentinel.com/v1/dex/metrics",
"tags": [
"base",
"dex",
"liquidity",
"volume"
],
"mimeType": "application/json",
"description": "How deep is liquidity for tracked Base tokens and how much is actually trading, with the source named, for sizing an order or declining one.",
"serviceName": "M2M Sentinel"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {}
},
"output": {
"type": "json",
"example": {
"status": "SUCCESS",
"metrics": [],
"network": "eip155:8453"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"properties": {}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"status"
],
"properties": {
"status": {
"type": "string",
"const": "SUCCESS"
},
"metrics": {
"type": [
"array",
"object"
]
}
}
}
}
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x6d6c398390cfb88f1cd42715b84906a0bd6652aa",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 120
}
],
"resource": {
"url": "https://api.m2msentinel.com/v1/token/price/USDC",
"tags": [
"base",
"token",
"price",
"liquidity"
],
"mimeType": "application/json",
"description": "What a tracked Base token is worth right now, taken as the median of the deepest pools rather than one pair, returning the pools considered and the spread across them.",
"serviceName": "M2M Sentinel"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"pathParams": {
"symbol": "USDC"
},
"queryParams": {}
},
"output": {
"type": "json",
"example": {
"token": {
"symbol": "USDC"
},
"status": "SUCCESS"
}
}
},
"schema": {
"type": "object",
"$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": [
"symbol"
],
"properties": {
"symbol": {
"type": "string",
"pattern": "^[A-Za-z0-9_-]{1,20}$",
"description": "A supported token symbol."
}
}
},
"queryParams": {
"type": "object",
"properties": {}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"status"
],
"properties": {
"token": {
"type": "object"
},
"status": {
"type": "string",
"const": "SUCCESS"
}
}
}
}
}
}
},
"routeTemplate": "/v1/token/price/:symbol"
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x6d6c398390cfb88f1cd42715b84906a0bd6652aa",
"amount": "20000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 120
}
],
"resource": {
"url": "https://api.m2msentinel.com/v1/whales/signals",
"tags": [
"base",
"erc20",
"transfers",
"whales"
],
"mimeType": "application/json",
"description": "Who is moving size on Base right now: large ERC-20 transfers reported as observed facts with amounts and source, not as trade signals or predictions.",
"serviceName": "M2M Sentinel"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {}
},
"output": {
"type": "json",
"example": {
"status": "SUCCESS",
"network": "eip155:8453",
"signals": []
}
}
},
"schema": {
"type": "object",
"$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": {}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"status"
],
"properties": {
"status": {
"type": "string",
"const": "SUCCESS"
},
"signals": {
"type": "array"
}
}
}
}
}
}
}
}
},
"x402Version": 2
}
] OVER TIME
All charts use the 30d selector; each series spans only the dates it has data for. Every series is also served as JSON at /api/v1/services/m2m-sentinel/price, /scores, /volume and /buyers. On-chain volume and distinct buyers are measured over the service's settlement address and are a conservative undercount (only settlements that reach a measured facilitator are counted). The on-chain series roll up hourly, so the latest day can be up to about an hour behind; distinct buyers are counted per payout address, so a service that settles to more than one address is an upper bound.
Median across 6 endpoints. Use the selector to isolate one.
checklist grew 11->14 on 2026-07-28; a step here is a metric change, not a regression
Measured site and economics pillars from the assessment history, so the latest value shown elsewhere on this page reads as a point on a trend rather than a permanent state.
COMPLIANCE
14/14 checks pass · grade Alast 402 captured 2026-09-02 · last up 2026-09-14
- 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
SITE PILLARS
- homepage reachable
- openapi doc
- pricing page
- llms.txt
- robots.txt
- terms page
recent checks (18) live · click to expand
EMBED THIS BADGE
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