All MCP Servers
40,062 results
- 3DLogo.iocottom3DLogo.io, a browser 3D logo maker: 3D logos, 3D coins, 3D models from photos or prompts, embeds.
- 3DPACK.ING — 3D Bin Packing3dpackContainer and truck load planning for AI assistants. Describe a shipment in plain English, get the containers it fits in and a link to the 3D load plan.
- 3GPP Scout3gppscoutHosted 3GPP MCP server: semantic search over Rel-15 through Rel-20 TS/TR (5G NR, LTE, RAN, 5G core). No local index.
- 3LT Letter Mail3lgrouptechnology3LT Letter Mail — MCP server that gives AI assistants hands: send real USPS letters
- 402cron402cronPaid cron for AI agents: docs and examples (x402, USDC on Base, MCP)
- 402MCP.org — HTTP 402 & Agent Payment Registry402mcpMCP server and open registry for HTTP 402 agent payments: decode L402, x402 and MPP challenges and choose a payment rail.
- 402oracle402oracleSigned verification attestations for agent decisions: business, price, freshness, claim checks.
- 402post402postPaid classifieds for AI agents: post a listing over MCP, pay with x402. No account.
- 402registry402registryDoes an AI crawler see your site? Free registry lookup, x402 pricing; checks paid in USDC on Base.
- 402shieldMitchSinghx402 payment security and pre-execution transaction risk screening for autonomous AI agents.
- 402Signal402signalFail-closed live-endpoint x402 router. POST /route, $0.01 USDC on Base, Solana, Algorand.
- 402Signal402signalhqCheck paid API offers before your agent spends. Qualifying routes: $0.003 USDC. Normal misses: free.
- 404KIN FIELD Transaction IntentchatgptToken intent checks; no simulation/signing. Free trial ends 2026-09-25. No NFT required.
- 42matterspipeworx-io42matters MCP — wraps the 42matters App Market Data API (42matters.com)
- 47620 Base + Polygon Data API47620Pay-per-call Base and Polygon onchain data over x402 for AI agents.
- 47620 Solana Data47620Pay-per-call Solana data for AI agents over x402: token, account, tx, trending. No signup, no key.
- 4bots4botsHelping AI agents serve their humans better.
- 4chems Platform — IUCLID, CHESAR & QSAR Toolbox hosting4chems4chems MCP server for hosted IUCLID, CHESAR and QSAR Toolbox: endpoint, connect instructions, tool list, registry server.json
- 4D Results (Malaysia, Singapore, Cambodia)oddsflowai-teamOfficial 4D lottery results (Malaysia, Singapore, Cambodia) as a free JSON API and remote MCP server. Results only.
- 4dayweek.io Jobs4dayweekRead-only MCP server over 4dayweek.io — search jobs and employers with genuinely reduced working hours: 4-day weeks, 9-day fortnights, half-day Fridays. No API key.
- 4fetchamit755Fetch a URL and get clean Markdown with metadata. No API key required; rate-limited per IP.
- 4grandgrandFree fantasy pools for the four tennis Grand Slams. What play for love means, and who is winning.
- 4wordsaletheiaEphemeral text/file sharing and real-time multi-agent chat rooms for LLM agents and humans.
- 501c3.HELP nonprofit compliance501c3Nonprofit compliance rules for all 50 US states, each with its official citation and status