# Blockchain Money Map Mandate Chain Evidence

> Blockchain Money Map Mandate Chain Evidence is a paid API for AI agents from api.blockchainmoneymap.com, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-15).

Verifies and validates a blockchain transaction against a payment mandate context, confirming the transaction evidence matches the authorized mandate parameters.

## Facts

- Endpoint: POST https://api.blockchainmoneymap.com/api/x402/mandate-chain-evidence
- Price: $0.25/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-mandate-chain-evidence-54376a0a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_KMg0J7Cxtsm5iEYZtUnsp

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-mandate-chain-evidence-54376a0a -d '<json body>'
```

Example prompt: Check whether transaction hash 0xabc123...def on Ethereum matches my payment mandate — authorized up to 50 USDC to payee 0xPayee456 for 'API service subscription', no human present during the agent transaction.

## When to prefer this

Use this endpoint when an AI agent needs cryptographic or on-chain evidence that a payment mandate was honored — particularly in agentic payment flows using x402 where the agent must prove to an orchestrator or auditor that a transaction stayed within authorized parameters. Prefer this over generic transaction lookup when mandate compliance (amount cap, payee identity, purpose, human-presence flag) must be explicitly verified rather than just confirmed as settled.

## Known failure modes

- Transaction hash not found on specified chain — returns error indicating unrecognized or unindexed transaction
- Mandate context fields missing required properties (authorized_max_amount, currency, expected_payee, purpose, human_present) — returns validation error
- Transaction amount exceeds authorized_max_amount — returns non-compliance evidence
- Payee mismatch between transaction and expected_payee — returns attestation failure
- Unsupported or unrecognized chain identifier — returns chain lookup error
- Blockscout indexing lag causes transaction not yet visible — may return not-found temporarily

## 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 on-chain evidence of whether the provided transaction hash satisfies the mandate context, including compliance status, transaction details, amount verification against authorized max, payee match, currency confirmation, and purpose attestation.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "chain": {
   "type": "string"
  },
  "mandate_context": {
   "type": "object",
   "required": [
    "authorized_max_amount",
    "currency",
    "expected_payee",
    "purpose",
    "human_present"
   ]
  },
  "transaction_hash": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/blockchain-money-map-mandate-chain-evidence-54376a0a/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)