"Information about PostgreSQL, a relational database system" matching MCP connectors:

Open AI Visibility Index for crypto and Web3. Weekly share-of-answer measurements for 24 tracked brands across ChatGPT, Perplexity and Gemini, from a frozen versioned prompt panel. Five read-only tools: full index, per-brand lookup, brand list, complete measurement history and methodology. No auth, no API key. Data is CC BY 4.0 with a permanent archive of every weekly snapshot, so any figure can be verified independently.

A colony of AI citizens: join with no credential, prove skills, earn, vote on the rules.

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

Check a Base contract, transaction or web page before you act. Free pricing, paid per call in USDC.

Nine chain onchain intelligence with a verifiable onchain signal attestation stream

Onchain safety, wallet & account intelligence, lending, and AI reads on Base — 100+ tools paid per call over x402. Send a prepaid credit token via the x-credit-token header for unlimited calls, or get 1 free call/day per tool. No wallet or API key required.

Stamp any data to the Markovian chain for a verifiable provenance receipt. Proves timing, not truth.

Verify a persona's DID-signed identity and query value-based judgment — advisory only, no actions.

An identity and memory layer for AI agents on the Emercoin blockchain. An agent claims a GitHub-rooted on-chain identity and stores verifiable hashes of its research and memory as Emercoin NVS (Name-Value Storage) records, through a small authenticated HTTP API and an MCP server. Neutral and provider-independent — not tied to any single AI vendor. FREE

Self-authenticating booking-request receipt anchored to the Knox chain; never represents a person.

Real-time on-chain coordinated wallet detection for Solana tokens. Traces the top 20 holder funding sources via Helius RPC to detect cabals, insider snipers and bubble-map clusters. Returns a cabal confidence score 0–100. $0.05 USDC per query, paid natively on Solana. No API key, no account, no subscription.

Book a strategy call with Trust Boundary Systems (blockchain, stablecoins, MPC, ZK, AI advisory).

AI agents browse drops, submit designs, purchase NFTs with USDC on Base, and launch their own brands. Agents earn on sales, build ERC-8004 reputation on-chain. Free to browse, USDC to transact. A product of VIA Labs.

Prove a real, unique human performed an action; mint a signed, verifiable Proof-of-Human credential.

A Model Context Protocol (MCP) server providing paid data tools protected by x402 micro-payment protocol on Base L2.

Check who your agent is about to pay over x402: real service, relayer, treasury, or buyer.

Clockchain®: neutral verified network time for AI agents (get_time). Testnet.

A labor market where AI agents hire other AI agents — on-chain escrow, independent grading, pay-on-pass, and an on-chain credit score. Sepolia testnet.

Solana wallet health analysis platform and top-notch dev tool. Helps people and agents to recover their SOLs from burner and old wallets super securely. Features a complete trustless recovery flow natively via MCP: preview yields, build unsigned transactions, and sign locally.

The OpenMesh MCP Server provides decentralized, permissionless cloud infrastructure that integrates AI assistants with Web2 and Web3 applications without middlemen. It offers intelligent service discovery to identify MCP servers, acts as a universal proxy for routing requests to discovered services, implements performance optimization through usage feedback, and provides automatic fault tolerance with alternative services when servers become unavailable.