IntentFence
VerificationPre-transaction policy and quote safety checks for autonomous AI agents. Agents can pay per request in USDC on Base via x402 to receive bounded risk assessments and signed verification receipts.
Pay from $0.005 per request in USDC on Base, settled onchain via the x402 protocol, no signup, no API key needed.
ASSESSMENT
updated 1h 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
- 3821ms
- avg response
- 2442ms
- total checks
- 24
compliance A (11/11)
11 of 11 x402 conformance checks pass. Full checklist below.
price $0.005 (p53 in Verification)
- price (min)
- $0.005
- category percentile (min)
- p53 in Verification
- endpoints / prices
- 1 / 1
- model
- flat
- 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.
traction $0 30d · 0 buyers
- volume 30d
- $0
- buyers 30d
- 0
- settlements 30d
- 0
- last settlement
- ---
- top buyer share
- -
- trend 7d vs 30d
- -
- networks
- eip155:8453
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 AI-agent payment safety and policy preflight checks, wallet screening, and official U.S. CPI data retrieval
- category
- agent-verification
- in
- body
AI-generated summary. The measured data is never altered by it.
ENDPOINTS
| METHOD | PATH | DESCRIPTION | PRICE | NETWORK | ASSET |
|---|---|---|---|---|---|
| POST | /api/preflight/verified | $0.005 | Base | USDC |
REQUEST / RESPONSE EXAMPLE
An unpaid request to POST /api/preflight/verified returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.
curl -i -X POST 'https://agentpass-protocol.rmalka06.chatgpt.site/api/preflight/verified'
// 402 response (captured by monitor) · 1 payload · click to expand
[
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x833ca7dcdb6a681ddc0c15982ef0d609bceb3a5e",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://agentpass-protocol.rmalka06.chatgpt.site/api/preflight/verified",
"tags": [
"ai-agents",
"payment-firewall",
"preflight",
"x402",
"usdc"
],
"iconUrl": "https://agentpass-protocol.rmalka06.chatgpt.site/favicon.svg",
"mimeType": "application/json",
"description": "Run a paid IntentFence preflight and receive x402 on-chain settlement proof.",
"serviceName": "IntentFence"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"action": {
"type": "purchase",
"resource": "order-1842"
},
"subject": "did:web:checkout-agent",
"constraints": {
"currency": "USD",
"quoted_cost": 79,
"cost_ceiling": 100,
"human_approval": "not_required",
"data_retention_hours": 24
}
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"status": "safe_to_proceed",
"receipt": {
"format": "JWS Compact",
"signed": true,
"algorithm": "ES256"
},
"request_id": "7d7fbf44-3c39-4eca-89d6-b44d756c8df1",
"intentfence": "0.5",
"verification_tier": "x402-settled"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"subject",
"action"
],
"properties": {
"action": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string",
"maxLength": 120,
"minLength": 1
},
"resource": {
"type": "string",
"maxLength": 500
}
}
},
"proofs": {
"type": "array",
"items": {
"type": "string"
},
"maxItems": 20
},
"subject": {
"type": "string",
"maxLength": 200,
"minLength": 1,
"description": "Agent or principal identifier."
},
"constraints": {
"type": "object",
"properties": {
"currency": {
"type": "string",
"maxLength": 12
},
"quoted_cost": {
"type": "number",
"minimum": 0
},
"cost_ceiling": {
"type": "number",
"minimum": 0
},
"human_approval": {
"enum": [
"required",
"optional",
"not_required"
],
"type": "string"
},
"data_retention_hours": {
"type": "number",
"minimum": 0
}
}
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"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": [
"intentfence",
"request_id",
"status",
"verification_tier",
"receipt"
],
"properties": {
"status": {
"enum": [
"safe_to_proceed",
"needs_review",
"denied"
],
"type": "string"
},
"receipt": {
"type": "object"
},
"request_id": {
"type": "string",
"format": "uuid"
},
"intentfence": {
"type": "string",
"const": "0.5"
},
"verification_tier": {
"type": "string",
"const": "x402-settled"
}
}
}
}
}
}
}
}
},
"x402Version": 2
}
] UPTIME
RECENT CHECKS
OVER TIME
All charts share the 24h window selected here. Every series is also served as JSON at /api/v1/services/intentfence/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.
COMPLIANCE
11/11 checks pass · grade A- 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
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