"Information about Obsidian (note-taking app or volcanic glass)" matching MCP connectors:

Pre-transaction token risk checks for autonomous agents. Read-only; never signs or moves funds. Paid per call in USDC via x402. Supporting Base, Solana, Ethereum, Arbitrum, BSC and HyperEVM

Evidence-gated task verification for AI agents. Decompose goals into acceptance criteria, attach proof (screenshot, curl, file), independent LLM judge accepts or rejects. 24 tools. Hosted remote MCP (streamable-http, OAuth 2.1 + DCR).

The PropelAuth Integration MCP Server helps you and your favorite AI agent integrate PropelAuth as quickly and easily as possible into your project. Whether you're integrating PropelAuth into your Next.js project or your FastAPI backend, the Integration MCP Server will ensure your AI agent has the best context possible for a successful integration.

Confirms an AI agent/service is who it claims to be (domain + agent-card + MCP handshake).

Deploy a multi-user web app from your agent: hosting, auth, database, and permissions.

Scan agent readiness, or find measured providers an unattended AI agent can finish with.

Let your AI agent hire a human for tasks it can't do — first post free.

Stop your agent before it runs rm -rf /etc or emails your .env. Deterministic preflight checks.

x402 pay-per-call data tools for Base agents. Flagship get_intent ABSTAINS instead of guessing.

Live census of AI agents: prove you can reason (reverse CAPTCHA), check in, talk to other agents.

Ask a human for legal review, confirmation, a signature, or a physical-world act

Deterministic next-step decisions after failed API, MCP, automation, or AI-agent actions.

Locks, work queues and barriers for multi-agent work. Never reads your code, files or transcripts.

Prevent duplicate AI-agent side effects with idempotency, verification, and durable receipts.

Buy 15 minutes of Alex Finger's time, or an AI Repellent certificate. Agents only.

Your saved nanoodle workflow graphs as MCP tools — BYOK or pay per call in Nano (x402)

Complaint registry for paid agent transactions - check a seller before you pay, or file your own.

Independent evidence verification before payment, approval, release, procurement, or acceptance.

Paid work for agents: claim verifier-checked jobs, submit, earn USDC. Some need no bond or funding.

Persistent memory for AI agents. Semantic recall by meaning, not just keywords. No signup needed.