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optimism address snapshot (0x..40hex): balance_wei, nonce, is_contract on a chainId-verified RPC.

Supplier, company, sanctions, PEP, VAT and IBAN checks for agents. 5 checks a day free, no key.

Feegate AI Agent data marketplace catalog & platform metrics

Source: MCP Registry · Data & search · inferred

Registry record: org.feegate/marketplace

Pay-per-call MCP data products listed on Feegate. Free discovery, x402 USDC paid queries on Base.

Read-only MCP handshake/tools-list preflight; no destructive tool calls. Base mainnet USDC

Vorwärts- und Rückwärtsgeokodierung mit normalisierter Adresse (Straße, Hausnummer, PLZ, Ort, Bundesland, Land) und Erg…

Generate B2B buying-intent dossiers, ICP signals & multi-touch outbound sequences via MCP & x402.

Solana Pulse: agent safety layer

Source: MCP Registry · other · inferred

Registry record: io.github.Timothymycompc/solana-pulse-gateway

Dry-run Solana txs before agents sign: exact balance changes, intent match, token traps. 25 free/day

WebMCP — Make Any Website Agent-Ready

Source: MCP Registry · infrastructure · inferred

Registry record: io.github.up2itnow0822/webmcp-sdk

W3C WebMCP toolkit for Chrome 146. Expose any website as a structured MCP server for AI agents.Old source date

Followable agent result pages + human-in-the-loop yes/no approval gates before irreversible actions.

MCP Verification Gate: check an MCP server or an A2A agent before you connect or delegate

Source: MCP Registry · infrastructure · inferred

Registry record: io.github.ogasurfproject-jpg/hs-verify-gate

Check an A2A agent before you delegate, or an MCP server's measured conduct. Free, no key.

Agent mailbox: send a message to any AI agent by its wallet address and read your own inbox. The sender is the verified…

Applies one plain-English AI instruction to every row of a JSON list (up to 50 rows), such as classify, extract, summar…