Market Data · x402 · active demand

Return the latest or a subject-selected recipe-bound, source-hashed proposal lifecycle…

Return the latest or a subject-selected recipe-bound, source-hashed proposal lifecycle fact.

by api.urbangametheory.xyz · discovered, not yet claimed by its owner · updated 2026-10-04

30d calls61

30d payers21

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

Return the latest or a subject-selected recipe-bound, source-hashed proposal lifecycle fact.

Tags: urban-planning · land · oracle · agents · bazaar

Call contract

Method: GET
Input: query parameters
Output: json
Last paid call: 2026-10-04

Input example from Bazaar metadata

{
  "market": "GDYnzduynKhKgxDhvvKVarn2s23DtzA26s6hycuUYDRB",
  "subject": "Gsvt6nMhsvfrEDgvcqZDzPKZhhqACFEi3mueMxQNQ6UT"
}

Output example

{
  "fact": {
    "eventType": "proposal_lifecycle",
    "observedAt": "2026-09-21T16:24:07.000Z",
    "outcome": "cancelled",
    "subject": {
      "id": "Gsvt6nMhsvfrEDgvcqZDzPKZhhqACFEi3mueMxQNQ6UT",
      "type": "proposal"
    }
  },
  "recipe": {
    "hash": "sha256:0000000000000000000000000000000000000000000000000000000000000000",
    "id": "proposal-lifecycle-v1"
  },
  "verification": {
    "checks": {
      "subjectMatches": true
    },
    "status": "verified"
  }
}

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/38085.json for the price and payment options.
Pay. Call GET https://api.urbangametheory.xyz/agent/oracle/facts. 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 the listed asset on Solana Devnet, and an x402-capable client (see the examples below). Call the endpoint unpaid first to see exactly what it asks for.

Pricing & payment

Price: see accepts
Protocol: x402 v2
Auth: No account or API key. Pay per request.
Networks: Solana Devnet
Demand: 61 calls · 21 unique payers in 30d (public x402 Bazaar data)

x402 payment requirements

Scheme	Network	Asset	Amount	Pay to	Timeout
exact	Solana Devnet solana:EtWTRABZaYq6iMfeYKouRu166VU2xqa1	4zMMC9srt5Ri5X14GAgXhaHii3GnPAEERYPJgZJDncDU	10000	AMbsiP9F8YY2y8n9uFdqtw7yNZZHvTWFEWSQGHKtmkoQ	300s

accepts[] (raw JSON)

[
  {
    "scheme": "exact",
    "network": "solana:EtWTRABZaYq6iMfeYKouRu166VU2xqa1",
    "payTo": "AMbsiP9F8YY2y8n9uFdqtw7yNZZHvTWFEWSQGHKtmkoQ",
    "asset": "4zMMC9srt5Ri5X14GAgXhaHii3GnPAEERYPJgZJDncDU",
    "amount": "10000",
    "maxTimeoutSeconds": 300
  }
]

Schemas

Output schema (JSON Schema)

{
  "properties": {
    "example": {
      "properties": {
        "fact": {
          "type": "object"
        },
        "recipe": {
          "type": "object"
        },
        "verification": {
          "type": "object"
        }
      },
      "required": [
        "fact",
        "recipe",
        "verification"
      ],
      "type": "object"
    },
    "type": {
      "type": "string"
    }
  },
  "required": [
    "type"
  ],
  "type": "object"
}

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

{
  "example": {
    "fact": {},
    "recipe": {},
    "verification": {}
  },
  "type": "string"
}

Examples

curl

curl "https://api.urbangametheory.xyz/agent/oracle/facts"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

JavaScript

const res = await fetch("https://api.urbangametheory.xyz/agent/oracle/facts");
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://api.urbangametheory.xyz/agent/oracle/facts")
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: api.urbangametheory.xyz
Endpoint: https://api.urbangametheory.xyz/agent/oracle/facts
Machine-readable: /resources/38085.json