Budget-capped x402 buyer: delegate USDC in plain words, agent discovers and pays per call.
MCP servers
Compare source listings, connection options and authentication requirements.
Showing 8,401–8,424 of 165,839 resultsPage 351 of 6,910
Candidate groups, not verified unique MCPs. How grouping works
Paid cron for AI agents: we call your https URL on schedule, signed. No account, paid with x402.
Decode HTTP 402 challenges (L402, x402, MPP) and choose agent payment rails from an open registry.
Decode HTTP 402 challenges (L402, x402, MPP) and choose agent payment rails from an open registry.
Signed verification attestations for agent decisions: business, price, freshness, claim checks.
Paid classifieds for AI agents: post a listing over MCP, pay with x402. No account.
x402 payment firewall + Agent Credit Bureau. Invoice/verify/score via RLUSD on XRPL.
Does an AI crawler see your site? Free registry lookup, x402 pricing; checks paid in USDC on Base.
12 utility endpoints for AI agents (QR codes,screenshots, scraping, AI summarization). Two payment rails: pre-paid Bearer credits via NowPayments or x402 USDC pay-per-call on Base mainnet.
x402 payment security and pre-execution transaction risk screening for autonomous AI agents.
Check an x402 endpoint before your agent pays: pay, skip or recheck. Plus a verified x402 catalog.
402xAgent is the check an agent calls before paying any x402 endpoint. It probes the endpoint's 402 without paying and returns a pay / skip / recheck verdict with a reason. Every check leaves a public receipt. It never pays the target.
Risk preflight for AI Agent tool actions and Polymarket settlement and execution checks.
Risk preflight for AI Agent tool actions and Polymarket settlement and execution checks.
Token intent checks; no simulation/signing. Free trial ends 2026-09-25. No NFT required.
42matters MCP — wraps the 42matters App Market Data API (42matters.com)
Scheduling for AI assistants: bookings, availability, meeting polls and routing forms.
MCP for the 46a platform.
Pay-per-call Base and Polygon onchain data over x402 for AI agents.
Pay-per-call Base and Polygon onchain data over x402 for AI agents.
x402 pay-per-call: onchain data (Solana/Base/Polygon), crypto market, JWT/unit utils, x402 stats.
Pay-per-call Solana data for AI agents over x402: token, account, tx, trending. No signup, no key.
x402 pay-per-call Solana data + crypto market + JWT/unit utils for AI agents.
x402 pay-per-call Solana data + crypto market + JWT/unit utils for AI agents.
What this catalog covers
- Source listings
- 167,775
- Candidate groups
- 168,195
- Setup-eligible endpoints
- 30,727
Sources observed 2026-10-24–2026-11-04. Listings can overlap across sources. Groups are identity candidates; setup eligibility is not a successful connection test.
SourcesMCP data from Glama connectorsMCP data from Glama source codeOfficial MCP RegistryClaude connector directoryAPI Tracker · publisher documentationSlack MCP directory
Default browsing excludes 2,356 specialized utility groups across the catalog. They remain available through keyword search and direct links. This editorial filter does not change the indexed totals or establish publisher quality.
Categories currently cover records matched to our reviewed catalog; other listings remain Uncategorized. Source-only projects have no generated connection option. Browse reviewed official MCPs →
- Glama connectors
API result set; pagination may cap at approximately 1,000 connectors. Not exhaustive.
- Glama source code
Complete chronological source-code catalog response; includes source-reported author classifications, not publisher attestations or ready-to-use endpoints.
- Official MCP Registry
Complete paginated registry response; registry membership is not publisher verification.
- Claude connector directory
Complete public Claude directory MCP components. Source tiers, tools, icons and sign-in hints are declarations, not publisher or runtime verification.
- API Tracker · publisher documentation
Publisher-documented remote presets, local servers and discovery-only announcements reviewed by API Tracker. Discoverability does not establish connection readiness.
- Slack MCP directory
Reviewed additions discovered through the public Slack Marketplace MCP category. Complete discovery inventory is retained separately; membership does not prove external-client compatibility.
Listings are grouped by exact public endpoints, exact package sets, or explicit reviewed identity bindings. Shared names or repositories alone do not merge implementations. Official includes publisher evidence and accepted source author classifications. It does not mean independently verified, runtime-tested or security-certified.