# Blockchain Money Map Agent Marketplace Comparison Board

> Blockchain Money Map Agent Marketplace Comparison Board is a paid API for AI agents from api.blockchainmoneymap.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-16).

Compares 2-5 blockchain marketplace listings side-by-side using weighted criteria to help an agent choose the best option for a given task

## Facts

- Endpoint: POST https://api.blockchainmoneymap.com/api/x402/x402-agent-marketplace-comparison-board?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/blockchain-money-map-agent-marketplace-comparison-board-db6c0ae7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_01z8_xBbppJYuQbm3UxQo

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-marketplace-comparison-board-db6c0ae7 -d '<json body>'
```

Example prompt: Compare these three blockchain marketplace listings for me — I need to pick the best one for executing low-fee token swaps, and weight price lowest at 50%, reliability at 30%, and speed at 20%: [listing A], [listing B], [listing C].

## When to prefer this

Use this endpoint when an AI agent needs to systematically compare a small set of blockchain marketplace or service listings using custom-weighted criteria, especially within an x402-payment-enabled agentic workflow. Prefer it over manual comparison when structured, reproducible scoring is needed and when the buyer task and weights are well-defined.

## Known failure modes

- Fewer than 2 listings provided — validation error returned
- More than 5 listings provided — rejected by maxItems constraint
- Missing required listings array in facts or reference_facts — schema validation error
- mode not set to 'compare' — request rejected
- Payment not included or insufficient — HTTP 402 returned requiring $0.01 USDC via x402
- Malformed comparisonWeights object — may produce unexpected scoring

## How this service works

Buyer agents see multiple similar services but lack one normalized board for price visibility, proof, limitations, and fit.

## Output

A JSON response containing a side-by-side comparison of 2-5 marketplace listings, scored and ranked according to provided weights and the buyer's stated task, with a recommended choice and per-criteria breakdown.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "mode": {
   "enum": [
    "compare"
   ]
  },
  "facts": {
   "type": "object",
   "required": [
    "listings"
   ],
   "properties": {
    "listings": {
     "type": "array",
     "maxItems": 5,
     "minItems": 2
    },
    "buyerTask": {
     "type": "string",
     "maxLength": 500
    },
    "sourceLabels": {
     "type": "array",
     "maxItems": 10
    },
    "comparisonWeights": {
     "type": "object",
     "maxProperties": 50,
     "additionalProperties": true
    }
   },
   "additionalProperties": false
  },
  "policy": {
   "type": "object",
   "additionalProperties": true
  },
  "reference_facts": {
   "type": "object",
   "required": [
    "listings"
   ],
   "properties": {
    "listings": {
     "type": "array",
     "maxItems": 5,
     "minItems": 2
    },
    "buyerTask": {
     "type": "string",
     "maxLength": 500
    },
    "sourceLabels": {
     "type": "array",
     "maxItems": 10
    },
    "comparisonWeights": {
     "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-marketplace-comparison-board-db6c0ae7/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)