About the index ↗
MARKET MONITOR / CATALOGUE Services 109,457 MCP listed 39,819 x402 69,693 Rails Base / Solana / Polygon / Arbitrum Imported 2026-10-26 · 3 sources
Task

Abi

39 services carry this tag in their source record. Tags come from the provider, not from us — a tag is a claim about what the service does, not proof that it does it well.

Abi function selector x402 REST usage

Function selector from a Solidity signature — Genesis402 / UnyKorn Operator Network

twin.unykorn.org Crypto & Payments 2 calls / 30d checked 2026-10-26
0.003 USDC per call per call

Eth namehash x402 REST usage

ENS namehash and labelhash for a name — Genesis402 / UnyKorn Operator Network

twin.unykorn.org Crypto & Payments 2 calls / 30d checked 2026-10-26
0.003 USDC per call per call

Eth units x402 REST usage

Convert between wei, gwei, ether and token units — Genesis402 / UnyKorn Operator Network

twin.unykorn.org Crypto & Payments 2 calls / 30d checked 2026-10-26
0.003 USDC per call per call

Chain info x402 REST usage

Reference data for a supported EVM chain — Genesis402 / UnyKorn Operator Network

twin.unykorn.org Crypto & Payments 2 calls / 30d checked 2026-10-26
0.003 USDC per call per call

Eth checksum address x402 REST usage

EIP-55 checksum an Ethereum address, and check one — Genesis402 / UnyKorn Operator Network

twin.unykorn.org Crypto & Payments 2 calls / 30d checked 2026-10-26
0.003 USDC per call per call

EIP-712 typed-data digest x402 REST usage

EIP-712 typed-data digest — Genesis402 / UnyKorn Operator Network

twin.unykorn.org Crypto & Payments 2 calls / 30d checked 2026-10-26
0.003 USDC per call per call

crypto-abi x402 REST usage

ABI-encode a function call (selector + args) or encode/decode arbitrary ABI types — build and parse EVM calldata correctly.

api.agentstools.dev Dev & Code 2 calls / 30d checked 2026-10-26
0.003 USDC per call per call

Raw contract call x402 REST usage

Runs any read-only contract call (eth_call) with your own calldata and returns the raw result, on five chains, with no API key and no rate limit. The escape hatch for anything the typed endpoints do not cover.

flat-rate-llm.kikoribera03.workers.dev Other services 1 calls / 30d checked 2026-10-26
0.005 USDC per call per call

Verified Contract ABI (Sourcify) x402 REST usage

ABI and readable function/event signatures of a verified smart contract from Sourcify, with contract name, compiler, licence, proxy implementation and deployer. Use before calling or decoding a contract.

bess-x402.onrender.com Dev & Code 1 calls / 30d checked 2026-10-26
0.003 USDC per call per call

Verified contract ABI (Sourcify) x402 REST

Fetch the verified ABI for a contract address from Sourcify, plus a ready-to-use list of human-readable function signatures with their 4-byte selectors. Covers 8 EVM mainnets. Unverified contracts return a structured {ve...

agent402.tools Dev & Code checked 2026-10-26
0.003 USDC per call per call

evm-contract-source x402 REST

Fetch a verified smart-contract's full source, ABI, compiler settings and NatSpec docs for an EVM address, and automatically resolve a proxy to its implementation so the response also carries the implementation ABI. One...

payai.agentstools.dev Dev & Code checked 2026-10-26
0.02 USDC per call per call

crypto-abi x402 REST

ABI-encode a function call (selector + args) or encode/decode arbitrary ABI types — build and parse EVM calldata correctly.

payai.agentstools.dev Dev & Code checked 2026-10-26
0.003 USDC per call per call

txsafety-raw x402 REST

Pre-sign safety verdict for a raw EVM transaction. Decodes the calldata against a known-signature registry, shows known-pattern effects (approval delta, transfer target), dry-runs eth_call for revert, checks scam-blockli...

payai.agentstools.dev Security checked 2026-10-26
0.02 USDC per call per call

evm-contract-abi x402 REST

Fetch just the ABI of a verified EVM contract, resolving a proxy to its implementation ABI as well. A cheap slice for when you only need the interface to encode calls or decode data, not the full source. Unverified contr...

payai.agentstools.dev Dev & Code checked 2026-10-26
0.008 USDC per call per call

Agent Extraction API x402 REST

Base or Ethereum contract address -> ABI and function list: Sourcify verification (exact/partial match), contract name, compiler, ABI, function selectors + signatures, event topics; proxies (EIP-1967, ZeppelinOS, others...

freetier-agent-api.pages.dev Crypto & Payments checked 2026-10-26
0.002 USDC per call per call

Related tasks