# Blockchain Money Map MCP Paid Tool Permission Scope Auditor

> Blockchain Money Map MCP Paid Tool Permission Scope Auditor is a paid API for AI agents from api.blockchainmoneymap.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-13).

Audits an MCP tool's declared permission scope and paid operation description against reference facts to detect drift, misrepresentation, or unauthorized scope expansion.

## Facts

- Endpoint: POST https://api.blockchainmoneymap.com/api/x402/x402-mcp-paid-tool-permission-scope-auditor
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/blockchain-money-map-mcp-paid-tool-permission-scope-auditor-ff573803
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_FtWJwsTZVd-J6B7aX8MNy

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-mcp-paid-tool-permission-scope-auditor-ff573803 -d '<json body>'
```

Example prompt: Audit this MCP tool for permission scope drift — the tool is called 'TransferFunds', its description says 'moves funds between wallets', its declared permission scope is 'read:wallet write:transfer', the paid operation description is 'executes on-chain token transfer', and compare it against the reference snapshot I registered last week where the scope was 'read:wallet' only. Flag any expansion or undeclared destructive actions.

## When to prefer this

Choose this endpoint when you need to programmatically verify that an MCP tool's declared permission scope has not drifted from a known-good reference state, especially in agentic pipelines where tool definitions could be tampered with or silently updated. It is particularly valuable for marketplace operators, agent orchestrators, or security-conscious deployments that need continuous compliance validation of paid MCP tools before execution.

## Known failure modes

- Missing required fields in facts or reference_facts objects returns a validation error
- Mismatched schema structure between facts and reference_facts may cause incomplete diff results
- Payment failure via x402 returns 402 with payment details before audit is performed
- Overly large input schemas (beyond 50 properties) are rejected by schema constraints
- Ambiguous or truncated tool descriptions may reduce audit accuracy

## How this service works

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

## Output

Returns a JSON audit result indicating whether the submitted tool facts match the reference facts, highlighting any permission scope drift, undeclared destructive actions, schema mismatches, or policy violations. Typically includes a compliance verdict, a list of specific discrepancies found, and severity indicators for each flag.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "mode": {
   "enum": [
    "audit"
   ]
  },
  "facts": {
   "type": "object",
   "required": [
    "tool_name",
    "tool_description",
    "input_schema",
    "declared_permission_scope",
    "paid_operation_description"
   ],
   "properties": {
    "tool_name": {
     "type": "string",
     "maxLength": 500
    },
    "input_schema": {
     "type": "object",
     "maxProperties": 50,
     "additionalProperties": true
    },
    "tool_description": {
     "type": "string",
     "maxLength": 500
    },
    "declared_permission_scope": {
     "type": "string",
     "maxLength": 500
    },
    "paid_operation_description": {
     "type": "string",
     "maxLength": 500
    },
    "destructive_action_declared": {
     "type": "boolean"
    }
   },
   "additionalProperties": false
  },
  "policy": {
   "type": "object",
   "additionalProperties": true
  },
  "reference_facts": {
   "type": "object",
   "required": [
    "tool_name",
    "tool_description",
    "input_schema",
    "declared_permission_scope",
    "paid_operation_description"
   ],
   "properties": {
    "tool_name": {
     "type": "string",
     "maxLength": 500
    },
    "input_schema": {
     "type": "object",
     "maxProperties": 50,
     "additionalProperties": true
    },
    "tool_description": {
     "type": "string",
     "maxLength": 500
    },
    "declared_permission_scope": {
     "type": "string",
     "maxLength": 500
    },
    "paid_operation_description": {
     "type": "string",
     "maxLength": 500
    },
    "destructive_action_declared": {
     "type": "boolean"
    }
   },
   "additionalProperties": false
  }
 }
}
```

## Response schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/blockchain-money-map-mcp-paid-tool-permission-scope-auditor-ff573803/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)