Agent Service · x402 · early usage

Address geocoding API for agents: geocode one U.S., Puerto Rico, or U.S

Name: Address geocoding API for agents: geocode one U
Price: 0.001 USD
Availability: InStock

Address geocoding API for agents: geocode one U.S., Puerto Rico, or U.S. Island Areas address for $0.001 USDC through the public Census Geocoder. Returns approximate coordinates with required Census attribution—no global maps, navigation, or address retention.

by api.delx.ai · discovered, not yet claimed by its owner · updated 2026-10-07

30d calls3

30d payers3

MethodPOST

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

Tags: x402 · maps · geocoding · address-geocoding · address-geocoding-api · bazaar · payment-identifier

Call contract

Method: POST
Input: json
Output: json
Last paid call: 2026-10-07

Input example from Bazaar metadata

{
  "address": "1600 Pennsylvania Ave NW, Washington, DC 20500"
}

Output example

{
  "result": {
    "attribution": "This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.",
    "benchmark": "Public_AR_Current",
    "coverage": "US, Puerto Rico and U.S. Island Areas",
    "data_note": "Coordinates are based on Census address ranges and may be interpolated; this is not a precise rooftop or navigation service.",
    "match_count": 1,
    "matches": [
      {
        "address_components": {
          "city": "WASHINGTON",
          "state": "DC",
          "zip": "20500"
        },
        "coordinates": {
          "latitude": 38.8977,
          "longitude": -77.0365
        },
        "matched_address": "1600 PENNSYLVANIA AVE NW, WASHINGTON, DC, 20500"
      }
    ],
    "privacy": "Delx does not retain the submitted address or include it in request logs.",
    "provider": "U.S. Census Bureau Geocoder",
    "provider_url": "https://www.census.gov/data/developers/data-sets/Geocoding-services.html",
    "schema": "delx/us-geocode/v1",
    "terms_url": "https://www.census.gov/data/developers/about/terms-of-service.html",
    "upstream_error": false
  },
  "tool_name": "geocode_us_address"
}

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/31144.json for the price and payment options.
Pay. Call GET https://api.delx.ai/api/v1/x402/geocode-us. 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, Solana, and an x402-capable client (see the examples below). Call the endpoint unpaid first to see exactly what it asks for.

Pricing & payment

Price: $0.001 / request
Protocol: x402 v2
Auth: No account or API key. Pay per request.
Networks: Base, Solana
Demand: 3 calls · 3 unique payers in 30d (public x402 Bazaar data)

x402 payment requirements

Scheme	Network	Asset	Amount	Pay to	Timeout
exact	Base eip155:8453	USDC	$0.001	0x9f8bd9875b3E0b632a24A3A7C73f7787175e73A2	300s
exact	Base eip155:8453	USDC	$0.001	0x9f8bd9875b3E0b632a24A3A7C73f7787175e73A2	300s
exact	Solana solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp	USDC	$0.001	28heAMpFkeUJsL7o7apiK4oJwZWq2fUHinRwbgYYsemG	300s

accepts[] (raw JSON)

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x9f8bd9875b3E0b632a24A3A7C73f7787175e73A2",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "1000",
    "amountUsd": 0.001,
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x9f8bd9875b3E0b632a24A3A7C73f7787175e73A2",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "1000",
    "amountUsd": 0.001,
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "payTo": "28heAMpFkeUJsL7o7apiK4oJwZWq2fUHinRwbgYYsemG",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "1000",
    "amountUsd": 0.001,
    "maxTimeoutSeconds": 300
  }
]

Schemas

Output schema (JSON Schema)

{
  "properties": {
    "example": {
      "result": {
        "attribution": "This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.",
        "benchmark": "Public_AR_Current",
        "coverage": "US, Puerto Rico and U.S. Island Areas",
        "data_note": "Coordinates are based on Census address ranges and may be interpolated; this is not a precise rooftop or navigation service.",
        "match_count": 1,
        "matches": [
          {
            "address_components": {
              "city": "WASHINGTON",
              "state": "DC",
              "zip": "20500"
            },
            "coordinates": {
              "latitude": 38.8977,
              "longitude": -77.0365
            },
            "matched_address": "1600 PENNSYLVANIA AVE NW, WASHINGTON, DC, 20500"
          }
        ],
        "privacy": "Delx does not retain the submitted address or include it in request logs.",
        "provider": "U.S. Census Bureau Geocoder",
        "provider_url": "https://www.census.gov/data/developers/data-sets/Geocoding-services.html",
        "schema": "delx/us-geocode/v1",
        "terms_url": "https://www.census.gov/data/developers/about/terms-of-service.html",
        "upstream_error": false
      },
      "tool_name": "geocode_us_address"
    },
    "type": {
      "const": "json",
      "type": "string"
    }
  },
  "required": [
    "type",
    "example"
  ],
  "type": "object"
}

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

{
  "example": null,
  "type": "string"
}

Examples

curl

curl -X POST 'https://api.delx.ai/api/v1/x402/geocode-us' -H 'Content-Type: application/json' --data '{"address":"1600 Pennsylvania Ave NW, Washington, DC 20500"}'
# -> 402 Payment Required; read PAYMENT-REQUIRED
# retry the identical request with PAYMENT-SIGNATURE

JavaScript

const res = await fetch("https://api.delx.ai/api/v1/x402/geocode-us", {
  "method": "POST",
  "headers": {
    "content-type": "application/json"
  },
  "body": "{\"address\":\"1600 Pennsylvania Ave NW, Washington, DC 20500\"}"
});
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
import json
res = httpx.request("POST", "https://api.delx.ai/api/v1/x402/geocode-us", json=json.loads("{\"address\":\"1600 Pennsylvania Ave NW, Washington, DC 20500\"}"))
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.delx.ai
Endpoint: https://api.delx.ai/api/v1/x402/geocode-us
Machine-readable: /resources/31144.json