Block402 — agent-tools.cloud

Read-only Bitcoin and Ethereum mainnet RPC for AI agents: seven Bitcoin methods and 37 Ethereum methods covering balances, blocks, transactions, receipts, logs, proofs and simulations. One POST endpoint per network; JSON-RPC method and params in the body. Payments currently use test USDC on Base Sepolia through Coinbase CDP, at 0.0025–0.01 per call. Historical Ethereum state is subject to node retention; archive state is not guaranteed. HTTP RPC: POST https://api.block402.xyz/rpc/bitcoin or POST https://api.block402.xyz/rpc/ethereum. Method-specific URLs are no longer supported. Documentation: https://api.block402.xyz/openapi.json. Contact: [email protected]. Bitcoin quote example (do not pay a discovery-only challenge): KEY=$(openssl rand -hex 32) curl --include https://api.block402.xyz/rpc/bitcoin -H 'Content-Type: application/json' -H "Idempotency-Key: $KEY" -d '{"jsonrpc":"2.0","id":1,"method":"getblockcount","params":[]}' Persist the private key before payment; reuse it only for recovery of this same request. Sign the returned bound x402 quote and retry with PAYMENT-SIGNATURE. The same /rpc/bitcoin URL serves all seven supported methods.

Quality grade

How grading works

B 63.0 / 100

Availability 40.0 / 40

Endpoint responded (HTTP 200)

Payability 20.0 / 20

✓ Answers a real HTTP 402 challenge
✓ Publishes a /.well-known/x402 descriptor
✓ Payment address on record
✓ Settlement network declared
✓ Price declared

Demand 0.0 / 40

0 distinct payers, 0 USDC transfers in the last 30 days

Owner verified 3.0 / 3

Operator proved control of this domain

Endpoint last checked 6 h ago. On-chain activity last read 12 d ago. Availability and on-chain demand are both re-probed daily; the grade updates automatically on the next pass.

Paid endpoints

2 resource(s) advertised by this origin.

https://api.block402.xyz/rpc/bitcoin

https://api.block402.xyz/rpc/ethereum

How to call

cURL · x402-fetch / x402-axios will auto-handle 402

curl -X POST https://api.block402.xyz/rpc/bitcoin

MCP endpoint

https://api.block402.xyz/mcp

/.well-known/x402.json

https://api.block402.xyz/.well-known/x402

Listed in

Directories this entry was found in.

cdp-bazaar