# Blockchain Money Map Agent Card Signature Confidence Lens

> Blockchain Money Map Agent Card Signature Confidence Lens is a paid API for AI agents from api.blockchainmoneymap.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).

Analyzes and scores the confidence level of an A2A agent card's signature fields, comparing them against reference data to validate integrity and trustworthiness.

## Facts

- Endpoint: POST https://api.blockchainmoneymap.com/api/x402/x402-a2a-agent-card-signature-confidence-lens
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/blockchain-money-map-agent-card-signature-confidence-lens-01d7e93b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_EIg8CGc1qljWYBH6cVscg

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability blockchain-money-map-agent-card-signature-confidence-lens-01d7e93b -d '<json body>'
```

Example prompt: Check the signature confidence of this A2A agent card — run a check mode analysis comparing its signatureFields against this reference agent card to tell me how trustworthy the signature looks.

## When to prefer this

Choose this endpoint when you need to programmatically assess the cryptographic or structural confidence of an A2A agent card's signature fields — especially when comparing an unknown or marketplace agent card against a trusted reference. It is purpose-built for agent-to-agent trust workflows on the x402 payment protocol, making it ideal for automated agent onboarding pipelines or continuous integrity monitoring.

## Known failure modes

- Missing required agentCardJson or signatureFields returns a validation error
- Malformed JSON in agentCardJson causes a parsing failure
- Reference facts missing when comparison is needed may produce incomplete scoring
- Payment failure via x402 prevents the call from completing
- Exceeding maxProperties 50 on agentCardJson or signatureFields causes rejection

## How this service works

Choose Blockchain Money Map for human-readable public blockchain reports or x402-paid agent API services.

## Output

Returns a JSON object containing a confidence score or rating for the agent card's signature fields, along with a detailed breakdown of any discrepancies, integrity assessments, and comparison results between the submitted agent card and the reference agent card.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "mode": {
   "enum": [
    "check"
   ]
  },
  "facts": {
   "type": "object",
   "required": [
    "agentCardJson",
    "signatureFields"
   ],
   "properties": {
    "version": {
     "type": "string",
     "maxLength": 500
    },
    "issuerLabel": {
     "type": "string",
     "maxLength": 500
    },
    "sourceLabel": {
     "type": "string",
     "maxLength": 500
    },
    "agentCardJson": {
     "type": "object",
     "maxProperties": 50,
     "additionalProperties": true
    },
    "signatureFields": {
     "type": "object",
     "maxProperties": 50,
     "additionalProperties": true
    }
   },
   "additionalProperties": false
  },
  "policy": {
   "type": "object",
   "additionalProperties": true
  },
  "reference_facts": {
   "type": "object",
   "required": [
    "agentCardJson",
    "signatureFields"
   ],
   "properties": {
    "version": {
     "type": "string",
     "maxLength": 500
    },
    "issuerLabel": {
     "type": "string",
     "maxLength": 500
    },
    "sourceLabel": {
     "type": "string",
     "maxLength": 500
    },
    "agentCardJson": {
     "type": "object",
     "maxProperties": 50,
     "additionalProperties": true
    },
    "signatureFields": {
     "type": "object",
     "maxProperties": 50,
     "additionalProperties": true
    }
   },
   "additionalProperties": false
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/blockchain-money-map-agent-card-signature-confidence-lens-01d7e93b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.blockchainmoneymap.com](https://www.zero.xyz/host/api.blockchainmoneymap.com/llms.txt)