payment-ready until 2026-08-20
External governance layer for agent systems by Levels Of Self. Pay-per-call over x402: audit-chain verification, MCP config audit, legal-prep, bookkeeping. USDC on Base, no signup.
Pay from $0.005 to $49.00 in USDC on Base, settled onchain via the x402 protocol, no signup, no API key needed.
first settlement 2026-07-11 · $0.04 all-time · settled via coinbase
ASSESSMENT
updated 4h agoEvidence-backed signals, not a single score. Click any chip for the proof. Measured values stay read-only; unknown is honest.
reliability 100%
- uptime 24h
- 100%
- uptime 7d
- 100%
- uptime 30d
- 100%
- uptime 90d
- 100%
- response p95
- 504ms
- avg response
- 357ms
- total checks
- 2,737
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 $49.00 (p29 in AI)
- price (min)
- $0.005
- price (max)
- $49.00
- category percentile (min)
- p29 in AI
- category percentile (max)
- p97 in AI
- endpoints / prices
- 4 / 4
- 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
- -
- registrar
- -
- hosting
- custom
- domain created
- ---
Identity facts, not a risk score.
traction $0.01 30d · 2 buyers
- volume 30d
- $0.01
- buyers 30d
- 2
- settlements 30d
- 2
- first settlement
- 2026-07-11
- last settlement
- 2026-07-18
- top buyer share
- 50% of 30d volume
- trend 7d vs 30d
- 0.00x the 30d daily rate
- networks
- eip155:8453
- volume all-time
- $0.04
- settlements all-time
- 4
- median settlement 30d
- $0.005
- max settlement 30d
- $0.005
- settled via
- coinbase ($0.01, 2 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-derivedProvides governance and bookkeeping services for AI agent systems
- category
- ai-agent-governance
- in
- query params
- auth
- none
AI-generated summary. The measured data is never altered by it.
ENDPOINTS
| METHOD | PATH | DESCRIPTION | PRICE | NETWORK | ASSET | 402 CHANNEL |
|---|---|---|---|---|---|---|
| GET | /x402/audit-mcp | $0.05 | Base | USDC | header | |
| GET | /x402/bookkeeping | $49.00 | Base | USDC | header | |
| GET | /x402/legal-prep | $0.25 | Base | USDC | header | |
| GET | /x402/verify-audit | $0.005 | Base | USDC | header |
REQUEST / RESPONSE EXAMPLE
An unpaid request to GET /x402/audit-mcp returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.
curl -i 'https://api.100levelup.com/x402/audit-mcp'
// 402 response (captured by monitor) · 4 payloads · click to expand
[
{
"error": "PAYMENT-SIGNATURE header is required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x00916a5282D67A7CB309B40ab4071bBB7B8bd998",
"amount": "50000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
],
"resource": {
"url": "https://api.100levelup.com/x402/audit-mcp",
"mimeType": "application/json",
"description": "MCP config security & governance lint: catches inline secrets, unpinned supply-chain packages, broad filesystem scope, and plaintext transports. Deterministic findings + 0-100 score. Sample: https://api.100levelup.com/x402/sample-audit.json Submitted configs are not stored. Full agent-stack governance pilots: levelsofself.com"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "POST"
},
"output": {
"type": "json",
"example": {
"score": 85,
"findings": []
}
}
},
"schema": {
"properties": {
"input": {
"type": "object",
"properties": {
"body": {
"type": "object",
"description": "MCP server config JSON: {mcpServers:{...}} or a single server object."
}
}
},
"output": {
"type": "object",
"properties": {
"example": {
"score": 85,
"findings": []
}
}
}
}
}
}
},
"x402Version": 2
},
{
"error": "PAYMENT-SIGNATURE header is required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x00916a5282D67A7CB309B40ab4071bBB7B8bd998",
"amount": "250000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
],
"resource": {
"url": "https://api.100levelup.com/x402/legal-prep",
"mimeType": "application/json",
"description": "Legal-prep by a certified agent (LOS-CA-0002): explain a clause, review a document you paste, draft or revise wording, or prep questions for a licensed pro. Assistance only, never advice; every answer ends with a disclaimer and points you to a licensed professional. Submitted text is not stored. Full agent-stack governance pilots: levelsofself.com"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "POST"
},
"output": {
"type": "json",
"example": {
"mode": "explain",
"result": "...\nThis is AI-generated assistance, not advice from a licensed attorney. Consult a licensed professional for advice."
}
}
},
"schema": {
"properties": {
"input": {
"type": "object",
"properties": {
"body": {
"type": "object",
"description": "JSON: {mode:\"explain|doc_review|draft|questions\", text:string (<=20000 chars)}"
}
}
},
"output": {
"type": "object",
"properties": {
"example": {
"mode": "explain",
"result": "...\nThis is AI-generated assistance, not advice from a licensed attorney. Consult a licensed professional for advice."
}
}
}
}
}
}
},
"x402Version": 2
},
{
"error": "PAYMENT-SIGNATURE header is required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x00916a5282D67A7CB309B40ab4071bBB7B8bd998",
"amount": "49000000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
],
"resource": {
"url": "https://api.100levelup.com/x402/bookkeeping",
"mimeType": "application/json",
"description": "Bookkeeping by Harry (AI accountant): paste a transactions CSV, get a categorized ledger, monthly totals, a P&L summary, and flagged anomalies with a sha256 verification hash. Assistance only, not a CPA, not tax or legal advice. Submitted data is processed in memory and never stored. Full agent-stack governance pilots: levelsofself.com"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "POST"
},
"output": {
"type": "json",
"example": {
"row_count": 5,
"disclaimer": "Bookkeeping assistance. Not a CPA. Not tax or legal advice.",
"pnl_summary": {
"income": 3000,
"expenses": 2000,
"net_profit": 1000
}
}
}
},
"schema": {
"properties": {
"input": {
"type": "object",
"properties": {
"body": {
"type": "object",
"description": "JSON: {csv_text:string (<=2MB), business_name?:string, year?:number}"
}
}
},
"output": {
"type": "object",
"properties": {
"example": {
"row_count": 5,
"disclaimer": "Bookkeeping assistance. Not a CPA. Not tax or legal advice.",
"pnl_summary": {
"income": 3000,
"expenses": 2000,
"net_profit": 1000
}
}
}
}
}
}
}
},
"x402Version": 2
},
{
"error": "PAYMENT-SIGNATURE header is required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x00916a5282D67A7CB309B40ab4071bBB7B8bd998",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
],
"resource": {
"url": "https://api.100levelup.com/x402/verify-audit",
"mimeType": "application/json",
"description": "Half-cent x402 test call: prove your payment stack end-to-end, get a signed receipt + live verification response. Full agent-stack governance pilots: levelsofself.com"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET"
},
"output": {
"type": "json",
"example": {
"valid": true
}
}
},
"schema": {
"properties": {
"input": {
"type": "object",
"properties": {
"queryParams": {}
}
},
"output": {
"type": "object",
"properties": {
"example": {
"valid": true
}
}
}
}
}
}
},
"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/the-nervous-system-agent-governance-x402-api/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 4 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 2026-07-13 · last up 2026-08-13
- 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
<a href="https://x402-list.com/services/the-nervous-system-agent-governance-x402-api?utm_source=badge&utm_medium=referral&utm_campaign=embed"> <img src="https://x402-list.com/badge/the-nervous-system-agent-governance-x402-api.svg" alt="The Nervous System (agent governance x402 API) listed on x402-list" height="28"> </a>
[](https://x402-list.com/services/the-nervous-system-agent-governance-x402-api?utm_source=badge&utm_medium=referral&utm_campaign=embed)
<a href="https://x402-list.com/services/the-nervous-system-agent-governance-x402-api?utm_source=badge&utm_medium=referral&utm_campaign=embed"> <img src="https://x402-list.com/badge/the-nervous-system-agent-governance-x402-api.svg?data=uptime" alt="The Nervous System (agent governance x402 API) uptime on x402-list" height="28"> </a>