The real catalog of tools for AI agents

Proof of existence for files: anchor a SHA-256 hash on Base, look up proofs. Paid with x402.

Fetch real California Notary Public exam practice questions and grade answers in-chat.

Fail-closed refund, cancellation, return, and trial checks for 100 US subscription vendors.

Signed third-party verdict on what an npm package or file does when run. No key, no signup.

Book a Washington notary or apostille appointment, get a quote, and track it, via AI assistant.

Cryptographic receipts for AI outputs on Base or Solana via x402.

Attestation infrastructure for the agentic economy: signed, independently verifiable verdicts.

Signed, x402-paid StillOS notary tools: claim verdicts, OFAC screening, distress scoring.

Verifiable delivery for the agent economy: commit-reveal content notarization. Sellers commit to a d

Cryptographic proof of existence for AI agents. Base x402, NEAR anchored. Free tier.

Cryptographic proof of existence for AI agents. x402 on Base or Solana, NEAR anchored. Free tier.

Refund eligibility notary for US subscriptions. Returns ALLOWED/DENIED/UNKNOWN.

First-party Spanish and Portuguese property listings with notary-verified prices.

Trust scores and dated liveness/drift facts for MCP servers, from the lastseen.dev notary register.

Italian home purchase, inheritance and gift tax calculators by a notary's office. No login.

Mint tamper-evident receipts for AI agent actions. The notary layer for agent-to-agent transactions.