api.onesource.io

Name: api.onesource.io
Price: 0.005 USDC
Availability: InStock

Checks whether a blockchain address is a proxy contract and returns its proxy type and contract status. Intended for quick address-level chain inspection.

InfraLiveeip155:8453Exactvia facilitator:dexter

https://api.onesource.io/api/chain/proxy/:address

Calls · 30d

223↑ 2.0%

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 32 snapshots so far.

$20.97

Verified settled volume

A floor: summed over 5,000 of up to 90,755 indexed settlements. The exact verified count is not computed for a wallet this size.

$0.0050

Listed price

As published in the catalog. Always read the live 402 before paying.

—

Calls · 30d

Upstream's own call count for this endpoint, not ours.

—

Unique payers · 30d

Never called

—

Upstream on-chain volume

Reported by the source catalog.

Paid to

0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea

The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.

Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Provider

The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.

Live 402 challenge

Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.

{
  "meta": {
    "network": "eip155:8453",
    "endpoint": "/api/chain/proxy/:address",
    "cost_usdc": "0.005"
  },
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2",
        "credentialTypes": [
          "authorization"
        ]
      },
      "payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:8453",
      "currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
      "maxAmountRequired": "5000",
      "maxTimeoutSeconds": 3600
    },
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2",
        "withdrawDelay": 86400,
        "receiverAuthorizer": "0x11dF9F6280632aB8F12926b3f569E493EaEcf81b"
      },
      "payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
      "amount": "5000",
      "scheme": "batch-settlement",
      "network": "eip155:8453",
      "currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
      "maxAmountRequired": "5000",
      "maxTimeoutSeconds": 3600
    }
  ],
  "resource": {
    "url": "https://api.onesource.io/api/chain/proxy/:address",
    "mimeType": "application/json",
    "description": "Detect upgradeable proxy patterns (EIP-1967, UUPS, Transparent) via eth_getStorageAt - returns the implementation address behind a proxy"
  },
  "x402Version": 2,
  "payment_rails": [
    {
      "rail": "x402",
      "chain": "eip155:8453",
      "assets": [
        "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
      ],
      "recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea"
    },
    {
      "rail": "mpp",
      "chain": "tempo:4217",
      "assets": [
        "0x20c000000000000000000000b9537d11c60e8b50",
        "0x20c0000000000000000000000000000000000000"
      ],
      "recipient": "0x19B8e99079A5558ff4460357b0a78e14a7F600B7"
    }
  ],
  "api_key_subscription": {
    "url": "https://onesource.io/rest-api#pricing",
    "description": "Alternative to paying per call: a flat-rate monthly subscription authenticated with `Authorization: Bearer <key>`. No wallet, stablecoin, or on-chain settlement required. Use this if the client cannot custody a private key, if billing must be invoiced, or if per-call pricing costs more than a flat fee at your volume."
  }
}

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

0.005USDC≈ $0.005 USD

on Base · exact scheme

Pay 0.005 USDC on Base to 0x52E2…1f3ea. The signed payment is good for 1 hour.

Paid to: 0x52E2…1f3ea
USD Coin contract: 0x8335…02913
Payment window: 1 hour
As published: 5000 smallest units

0.005USDC≈ $0.005 USD

on Base · batch-settlement scheme

Pay 0.005 USDC on Base to 0x52E2…1f3ea. The signed payment is good for 1 hour.

Paid to: 0x52E2…1f3ea
USD Coin contract: 0x8335…02913
Payment window: 1 hour
As published: 5000 smallest units

The catalog’s raw entry

[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2",
      "credentialTypes": [
        "authorization"
      ]
    },
    "payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
    "amount": "5000",
    "scheme": "exact",
    "network": "eip155:8453",
    "currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "resource": "https://api.onesource.io/api/chain/proxy/:address",
    "recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
    "maxAmountRequired": "5000",
    "maxTimeoutSeconds": 3600
  },
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2",
      "withdrawDelay": 86400,
      "receiverAuthorizer": "0x11dF9F6280632aB8F12926b3f569E493EaEcf81b"
    },
    "payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
    "amount": "5000",
    "scheme": "batch-settlement",
    "network": "eip155:8453",
    "currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "resource": "https://api.onesource.io/api/chain/proxy/:address",
    "recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
    "maxAmountRequired": "5000",
    "maxTimeoutSeconds": 3600
  }
]

Provenance

Seen in the source catalog: 2026-09-23 18:58Z
Last indexed by Roundhouse: 2026-09-24 17:45Z
Last enriched (probe, favicon, geo): 2026-09-16 21:15Z
x402 version: 2
Max timeout: 3600s
Liveness probe: HTTP 402

Report

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.

GET api.roundhouseai.io/v0/endpoints

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 32 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.

Open skill.md

Show the prompt

Using Roundhouse, look up the x402 service api.onesource.io and tell me whether it is
worth paying: what a call costs, whether the endpoint answered when last probed, and what
its payment record actually shows.

curl -s 'https://api.roundhouseai.io/v0/endpoints?q=api.onesource.io'
curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>'

Then call it: read the price from the live 402 at https://api.onesource.io/api/chain/proxy/:address, never from
a cached figure, and pay with an x402 client.

The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except
/v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402,
or use an organization key from https://roundhouseai.io/dashboard/team.

If you do not have Roundhouse tools or skills installed, read
https://roundhouseai.io/skill.md first — it is the whole procedure.