MCP Tool · x402 · early usage

Use when you need callable agent services for a capability across protocols: x402 listi…

Name: Use when you need callable agent services for a capability across protocols: x402 listings
Price: 0.002 USD
Availability: InStock

by x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev · discovered, not yet claimed by its owner · updated 2026-10-11

30d calls37

30d payers1

MethodGET

Outputjson

Mirrored from Coinbase's public x402 Bazaar. The description is the provider's own text and has not been reviewed here; the payment requirements are copied as published.

What it does

Use when you need callable agent services for a capability across protocols: x402 listings ranked by relevance weighted by 30-day paying wallets, plus hosted MCP servers from the Official MCP Registry (a capped subset, count in coverage; those naming x402, L402, MPP or pay-per-call first; that registry publishes no prices). L402 and MPP listings are not covered. ?q= required. $0.002 USDC per call. Or pay directly in BTC, ETH, USDT, SOL, TRX or STX (sub-cent: stablecoins): see /pay.

Tags: agent-economy · search · discovery · mcp · x402 · bazaar

Call contract

Method: GET
Input: query parameters
Output: json
Last paid call: 2026-10-11

Input example from Bazaar metadata

{
  "q": "weather"
}

Output example

{
  "counts": {
    "mcp": 1,
    "mcp_capped": false,
    "x402": 1
  },
  "coverage": {
    "mcp": {
      "built_at": "2026-10-05T23:05:42Z",
      "complete": false,
      "hosted_total": 24764,
      "indexed": 6717,
      "order": "servers whose registry text names x402, L402, MPP or pay-per-call first, then those mentioning Stripe, USDC or Lightning, then most recently updated",
      "pay_hints": "self-described in registry text, not verified; the registry publishes no prices",
      "payment_hinted_total": 1454
    },
    "not_covered": [
      {
        "id": "l402",
        "name": "L402 (Lightning HTTP 402)",
        "why": "no public L402 directory with terms that allow reuse was found"
      }
    ],
    "x402": {
      "listings": 34598,
      "ranking": "relevance weighted by 30-day paying wallets, then calls (Coinbase CDP x402 Bazaar catalog)",
      "searched": true
    }
  },
  "generated_at": "2026-10-06T00:00:00Z",
  "note": "Format sample: the protocol row and search coverage are our real computation of 2026-10-06; search cards, the Dune query and the gap are illustrative placeholders. Rankings are per protocol and not comparable across protocols. Words match as substrings. MCP results contain every query word; x402 results are ranked by relevance to any query word, weighted by 30-day paying wallets and calls, so an x402 result may match only some words. counts.mcp counts all matching indexed servers; counts.x402 is the number returned.",
  "protocol": null,
  "query": "weather",
  "results": {
    "mcp": [
      {
        "description": "Weather tools over MCP",
        "name": "dev.example/weather",
        "pay_hints": [
          "x402"
        ],
        "price_usd": null,
        "protocol": "mcp",
        "title": "Example Weather",
        "updated": "2026-10-01",
        "url": "https://mcp.example.dev/mcp"
      }
    ],
    "x402": [
      {
        "calls_30d": 340,
        "description": "Forecast by coordinates",
        "name": "Example weather API",
        "payers_30d": 12,
        "price_usd": 0.001,
        "protocol": "x402",
        "rail": "eip155:8453",
        "url": "https://api.example-seller.dev/weather"
      }
    ]
  },
  "snapshot_age_s": 600,
  "source": "P0 agent-economy index: agenteconomy.to (public on-chain data, free to reuse with attribution), the Official MCP Registry (CC0) and P0's own x402 Bazaar catalog and on-chain scans",
  "source_url": "https://agenteconomy.to/data.json",
  "sources": [
    {
      "attribution": "Data: agenteconomy.to by @realdora_eth",
      "id": "agenteconomy",
      "name": "agent economy (agenteconomy.to)",
      "terms_checked": "2026-10-06",
      "terms_quote": "Take it, cite it, build on it.",
      "terms_url": "https://agenteconomy.to/about",
      "urls": [
        "https://agenteconomy.to/data.json"
      ]
    }
  ],
  "stale": false,
  "tokens": [
    "weather"
  ],
  "v": 1
}

Use with an agent

Discover. Agents find this listing with GET https://bazaar.saylorinnovations.com/discovery/search?query=…, the MCP tool search_resources, or /discovery/resources.
Inspect. Fetch /resources/35504.json for the price and payment options.
Pay. Call GET https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/economy/search. The provider answers 402 with its payment requirements. An x402 client signs one of the options below and retries with PAYMENT-SIGNATURE.
Execute. The provider returns 200 with the data. Agent Bazaar is not in the request path and never sees your payment.

For humans

You don't need an account or an API key; you need a wallet holding a small amount of USDC on Base, Arbitrum One, Polygon, Avalanche, Optimism, eip155:42220, Ethereum, stacks:1, and an x402-capable client (see the examples below). Call the endpoint unpaid first to see exactly what it asks for.

Pricing & payment

Price: $0.002 / request
Protocol: x402 v2
Auth: No account or API key. Pay per request.
Networks: Base, Arbitrum One, Polygon, Avalanche, Optimism, eip155:42220, Ethereum, stacks:1
Demand: 37 calls · 1 unique payers in 30d (public x402 Bazaar data)

x402 payment requirements

Scheme	Network	Asset	Amount	Pay to	Timeout
exact	Base eip155:8453	USDC	$0.002	0xECa891e34b3E5873181Fb779672564E198C55354	300s
exact	Arbitrum One eip155:42161	USDC	$0.002	0xECa891e34b3E5873181Fb779672564E198C55354	300s
exact	Polygon eip155:137	USDC	$0.002	0xECa891e34b3E5873181Fb779672564E198C55354	300s
exact	Avalanche eip155:43114	0xB97EF9Ef8734C71904D8002F8b6Bc66Dd9c48a6E	2000	0xECa891e34b3E5873181Fb779672564E198C55354	300s
exact	Optimism eip155:10	0x0b2C639c533813f4Aa9D7837CAf62653d097Ff85	2000	0xECa891e34b3E5873181Fb779672564E198C55354	300s
exact	eip155:42220 eip155:42220	0xcebA9300f2b948710d2653dD7B07f33A8B32118C	2000	0xECa891e34b3E5873181Fb779672564E198C55354	300s
exact	Arbitrum One eip155:42161	0xFd086bC7CD5C481DCC9C85ebE478A1C0b69FCbb9	2000	0xECa891e34b3E5873181Fb779672564E198C55354	300s
exact	Ethereum eip155:1	0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48	2000	0xECa891e34b3E5873181Fb779672564E198C55354	300s
exact	stacks:1 stacks:1	SM3VDXK3WZZSA84XXFKAFAF15NNZX32CTSG82JFQ4.sbtc-token	10	SP34GH04YTB01AMXF4CAQ10Y5B7G4E0119N99W986	60s

accepts[] (raw JSON)

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0xECa891e34b3E5873181Fb779672564E198C55354",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "2000",
    "amountUsd": 0.002,
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:42161",
    "payTo": "0xECa891e34b3E5873181Fb779672564E198C55354",
    "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
    "amount": "2000",
    "amountUsd": 0.002,
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:137",
    "payTo": "0xECa891e34b3E5873181Fb779672564E198C55354",
    "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
    "amount": "2000",
    "amountUsd": 0.002,
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:43114",
    "payTo": "0xECa891e34b3E5873181Fb779672564E198C55354",
    "asset": "0xB97EF9Ef8734C71904D8002F8b6Bc66Dd9c48a6E",
    "amount": "2000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:10",
    "payTo": "0xECa891e34b3E5873181Fb779672564E198C55354",
    "asset": "0x0b2C639c533813f4Aa9D7837CAf62653d097Ff85",
    "amount": "2000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:42220",
    "payTo": "0xECa891e34b3E5873181Fb779672564E198C55354",
    "asset": "0xcebA9300f2b948710d2653dD7B07f33A8B32118C",
    "amount": "2000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:42161",
    "payTo": "0xECa891e34b3E5873181Fb779672564E198C55354",
    "asset": "0xFd086bC7CD5C481DCC9C85ebE478A1C0b69FCbb9",
    "amount": "2000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:1",
    "payTo": "0xECa891e34b3E5873181Fb779672564E198C55354",
    "asset": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48",
    "amount": "2000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "stacks:1",
    "payTo": "SP34GH04YTB01AMXF4CAQ10Y5B7G4E0119N99W986",
    "asset": "SM3VDXK3WZZSA84XXFKAFAF15NNZX32CTSG82JFQ4.sbtc-token",
    "amount": "10",
    "maxTimeoutSeconds": 60
  }
]

Schemas

Output schema (JSON Schema)

{
  "properties": {
    "example": {
      "properties": {
        "counts": {
          "properties": {
            "mcp": {
              "type": "number"
            },
            "mcp_capped": {
              "type": "boolean"
            },
            "x402": {
              "type": "number"
            }
          },
          "type": "object"
        },
        "coverage": {
          "properties": {
            "mcp": {
              "properties": {
                "built_at": {
                  "type": "string"
                },
                "complete": {
                  "type": "boolean"
                },
                "hosted_total": {
                  "type": "number"
                },
                "indexed": {
                  "type": "number"
                },
                "order": {
                  "type": "string"
                },
                "pay_hints": {
                  "type": "string"
                },
                "payment_hinted_total": {
                  "type": "number"
                }
              },
              "type": "object"
            },
            "not_covered": {
              "items": {
                "properties": {
                  "id": {
                    "type": "string"
                  },
                  "name": {
                    "type": "string"
                  },
                  "why": {
                    "type": "string"
                  }
                },
                "type": "object"
              },
              "type": "array"
            },
            "x402": {
              "properties": {
                "listings": {
                  "type": "number"
                },
                "ranking": {
                  "type": "string"
                },
                "searched": {
                  "type": "boolean"
                }
              },
              "type": "object"
            }
          },
          "type": "object"
        },
        "generated_at": {
          "type": "string"
        },
        "note": {
          "type": "string"
        },
        "protocol": {},
        "query": {
          "type": "string"
        },
        "results": {
          "properties": {
            "mcp": {
              "items": {
                "properties": {
                  "description": {
                    "type": "string"
                  },
                  "name": {
                    "type": "string"
                  },
                  "pay_hints": {
                    "items": {
                      "type": "string"
                    },
                    "type": "array"
                  },
                  "price_usd": {},
                  "protocol": {
                    "type": "string"
                  },
                  "title": {
                    "type": "string"
                  },
                  "updated": {
                    "type": "string"
                  },
                  "url": {
                    "type": "string"
                  }
                },
                "type": "object"
              },
              "type": "array"
            },
            "x402": {
              "items": {
                "properties": {
                  "calls_30d": {
                    "type": "number"
                  },
                  "description": {
                    "type": "string"
                  },
                  "name": {
                    "type": "string"
                  },
                  "payers_30d": {
                    "type": "number"
                  },
                  "price_usd": {
                    "type": "number"
                  },
                  "protocol": {
                    "type": "string"
                  },
                  "rail": {
                    "type": "string"
                  },
                  "url": {
                    "type": "string"
                  }
                },
                "type": "object"
              },
              "type": "array"
            }
          },
          "type": "object"
        },
        "snapshot_age_s": {
          "type": "number"
        },
        "source": {
          "type": "string"
        },
        "source_url": {
          "type": "string"
        },
        "sources": {
          "items": {
            "properties": {
              "attribution": {
                "type": "string"
              },
              "id": {
                "type": "string"
              },
              "name": {
                "type": "string"
              },
              "terms_checked": {
                "type": "string"
              },
              "terms_quote": {
                "type": "string"
              },
              "terms_url": {
                "type": "string"
              },
              "urls": {
                "items": {
                  "type": "string"
                },
                "type": "array"
              }
            },
            "type": "object"
          },
          "type": "array"
        },
        "stale": {
          "type": "boolean"
        },
        "tokens": {
          "items": {
            "type": "string"
          },
          "type": "array"
        },
        "v": {
          "type": "number"
        }
      },
      "required": [
        "v",
        "generated_at",
        "query",
        "tokens",
        "protocol",
        "results",
        "counts",
        "coverage",
        "sources",
        "stale",
        "snapshot_age_s",
        "source",
        "source_url",
        "note"
      ],
      "type": "object"
    },
    "type": {
      "type": "string"
    }
  },
  "required": [
    "type"
  ],
  "type": "object"
}

Example shape — generated from the schema, not a captured live response

{
  "example": {
    "counts": {
      "mcp": 0,
      "mcp_capped": true,
      "x402": 0
    },
    "coverage": {
      "mcp": {
        "built_at": "string",
        "complete": true,
        "hosted_total": 0,
        "indexed": 0,
        "order": "string",
        "pay_hints": "string",
        "payment_hinted_total": 0
      },
      "not_covered": [
        {
          "id": "string",
          "name": "string",
          "why": "string"
        }
      ],
      "x402": {
        "listings": 0,
        "ranking": "string",
        "searched": true
      }
    },
    "generated_at": "string",
    "note": "string",
    "protocol": null,
    "query": "string",
    "results": {
      "mcp": [
        {
          "description": "string",
          "name": "string",
          "pay_hints": [
            "string"
          ],
          "price_usd": null,
          "protocol": "string",
          "title": "string",
          "updated": "string",
          "url": "string"
        }
      ],
      "x402": [
        {
          "calls_30d": 0,
          "description": "string",
          "name": "string",
          "payers_30d": 0,
          "price_usd": 0,
          "protocol": "string",
          "rail": "string",
          "url": "string"
        }
      ]
    },
    "snapshot_age_s": 0,
    "source": "string",
    "source_url": "string",
    "sources": [
      {
        "attribution": "string",
        "id": "string",
        "name": "string",
        "terms_checked": "string",
        "terms_quote": "string",
        "terms_url": "string",
        "urls": [
          "string"
        ]
      }
    ],
    "stale": true,
    "tokens": [
      "string"
    ],
    "v": 0
  },
  "type": "string"
}

Examples

curl

curl "https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/economy/search"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

JavaScript

const res = await fetch("https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/economy/search");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

Python

import httpx
res = httpx.get("https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/economy/search")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header

Details

Provider: x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev
Endpoint: https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/economy/search
Machine-readable: /resources/35504.json