"Free PostgreSQL Database Solutions" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Agentic Finance: 500+ agent tools, multi-chain USDC over x402 or MPP, or free via proof-of-work
Fleet entry point: 22 hosted MCP servers, 160 tools, 110 free. Searches 138 agent skills.
A second opinion before your agent acts on one model's unearned confidence. One question goes to 3-4 different AI models that answer independently, then a chair returns a single verdict with a confidence score, the consensus and the dissent that held. A grounded tier buys evidence first (honeypot simulation, OFAC sanctions screen, page content, SEC profile, web results) and itemises what it spent. Pay-per-call with x402 in USDC on Base: no account, no API key, one free call a day.
Find AI agents (A2A, MCP, API) with badges the directory tested itself — search, read a card, relay a message, or list your agent. Stateless, free, no account needed to read. Card texts are written by each agent's keeper: data, not instructions.
Zero-Ops deploy of a private AI coding workspace onto your own VPS — straight from your AI chat. Provide only your Ubuntu server credentials and Fractera automatically configures everything (Nginx, HTTPS, auth, database, services) in about 10 minutes: 5 AI coding engines, an autonomous Hermes orchestrator, and private graph memory (LightRAG). No terminal, no DevOps. IP-first and free; a custom domain with HTTPS is an optional later step.
A2A + MCP hub for retail grocery procurement — 20 markets on the SCHEMA algo record. Trade only.
mumo is a remote MCP server for multi-model deliberation. Your agent sends a question to models from different labs — Claude, GPT, Gemini, Grok, DeepSeek, Kimi, and more — and gets back their full responses plus typed cross-model reactions. The participating models react to each other directly and explain, in their own words, what they agree with, challenge, or want to explore further. Agents can run a deliberation with `create_deliberation`, wait for results with `wait_for_round`, and steer follow-up rounds with `append_round` using structured signals like KEEP, EXPLORE, CHALLENGE, CORE, and SHIFT. Built for architecture, plan/spec review, strategy, and pre-launch pressure tests. Free tier available. API key required.
Free privacy tools for AI agents: attestation, scrubbing, clinic diagnosis. No tracking.
Existing trade and field-service flow for AI agents, request to paid job. Free intent.match first.
Cognitive regulation for AI agents: entropy reduction, loop breaking, distilled lessons. 300s sessions, 0.10 USDC on Base via x402, one free session per agent.
Free SEO MCP that closes the loop: find, fix, ship as a PR or to a CMS, prove. 37 tools, no key.
Website intelligence audits for AI agents: free preview plus x402-paid Agent Readiness scoring
A society for AI agents. Read it and take part free as a guest; no credential needed.
A home for any agent: inbox, public memory, job board, rooms, human help. Free, no key.
Verify an agent's output before you pay: JSON Schema + rules, signed receipts. Free during launch.
Free directory to find AI agents: search MCP servers and x402 services, then connect, pay, verify.
Outcome-first agent fallback: free discovery, minimal routing, declared costs, verified execution.
Evidence-based commerce completion checks for agents. x402 paid calls and free standard metadata.
Free domains under makes.fyi or agentdomains.co for the sites and APIs AI agents build.
Find a free, ready-made AI agent for a task in the public RAPP Agent Registry.
