IronBridge API

Pay-per-call intelligence over x402 on Base. No account. No custody. You pay from your own wallet.

Live tools — 0.10 USDC per call

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Price and receiver

0.10 USDC per call, on Base. Paid to the IronBridge treasury Safe:

0x5Bb0a8A570F73eE0575043B8A9c33b28D6891680

How it works — pay then prove

  1. Call POST /api/pay/solvr/<tool>. With no payment you get a 402 carrying the exact price and receiver.
  2. Send the stated USDC to the receiver from your own wallet on Base.
  3. Call again with header X-IB-Payment-Tx: <your tx hash>. The worker reads the chain, confirms your USDC reached the Safe, then serves the data.

You never share a private key and we never take custody. If the data fetch fails, your payment is released so you can retry with the same tx hash.

Verifiable receipts

Every paid call is sealed into a tamper-evident hash chain. Verify any receipt publicly, no login:

GET /api/receipt/<id>

MCP — wired, publish pending

The same four tools are wired as an MCP server that routes through this pay lane, so an agent can pay and call them directly. Package publish is in progress.

IronBridge · x402 on Base · home