# Blockchain Money Map Human Intent Checksum

> Blockchain Money Map Human Intent Checksum is a paid API for AI agents from api.blockchainmoneymap.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).

Issues or verifies a cryptographic checksum for an agent's stated intent and proposed action, enabling tamper-evident authorization flows for blockchain agent services.

## Facts

- Endpoint: POST https://api.blockchainmoneymap.com/api/devagentpal/human-intent-checksum
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/blockchain-money-map-human-intent-checksum-da113a8d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_9Yz8O1m8RvqOT2hTAPbat

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-human-intent-checksum-da113a8d -d '<json body>'
```

Example prompt: Before I execute this blockchain transfer, issue me an intent checksum for the action of sending 10 USDC to wallet 0xABC given my stated intent to pay a vendor invoice, and then verify that my proposed action matches that intent.

## When to prefer this

Use this endpoint when you need a lightweight, pay-per-call cryptographic guard for AI agent intent integrity on blockchain workflows — especially when you want to lock in an agent's declared intent before execution and independently verify it hasn't changed. Prefer this over general-purpose signing services when your workflow is specifically about agent authorization policies and blockchain action alignment.

## Known failure modes

- Mismatched intent and proposedAction returns verification failure with mismatch details
- Invalid or malformed intent/policy/authorization object returns 400-level error
- Expired or tampered intentChecksum in verify mode returns invalid checksum error
- Missing required mode field causes request rejection
- Payment not received via x402 protocol returns 402 Payment Required

## 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 either a newly issued intent checksum (in 'issue' mode) or a verification result indicating whether the proposedAction matches the original intent and complies with the stated policy and authorization (in 'verify' mode). Includes status, checksum string, and any policy violations detected.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "mode": {
   "enum": [
    "issue",
    "verify"
   ],
   "type": "string"
  },
  "intent": {
   "type": "object"
  },
  "policy": {
   "type": "object"
  },
  "authorization": {
   "type": "object"
  },
  "intentChecksum": {
   "type": "string"
  },
  "proposedAction": {
   "type": "object"
  }
 }
}
```

## Response schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/blockchain-money-map-human-intent-checksum-da113a8d/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)