MCP Server Directory

SAuth required Signed com.signed/signed Angel investor portfolio, startup deal pipeline, and CRM data from your Signed account. 133 ms latency— 24h streamable-http1d ago SIOperational Signed Investors com.signed/investors Search Signed's public angel investor directory by sector, check size, or keyword. No login needed. 325 ms latency— 24h streamable-http1d ago SMAuth required SIGNL4 MCP by usefulapi io.usefulapi/signl4 Read SIGNL4 alerts, teams, users and duty schedules; raise, acknowledge, close and annotate alerts. 115 ms latency— 24h streamable-http2d ago SOperational Signo fi.signo/signo AI agents that watch DeFi positions: read a wallet report, draft agents for the owner to sign. 418 ms latency— 24h streamable-http2d ago SMAuth required SignRequest MCP by usefulapi io.usefulapi/signrequest Read documents, signature requests and templates; send, cancel and resend requests in SignRequest. 252 ms latency— 24h streamable-http1d ago SOperational SignSimple app.signsimple/signsimple Send PDFs for legally binding e-signature, free and unlimited. Track status; free legal templates. 226 ms latency— 24h streamable-http2d ago SOperational SignupBouncer com.signupbouncer/checker An API that checks new signups for disposable emails and repeat accounts. 345 ms latency— 24h streamable-http2d ago SMAuth required SignUpGenius MCP Server and API by Cotlet dev.cotlet/signupgenius SignUpGenius MCP server: create sign-up, add slots, list participants, swap participant. 193 ms latency— 24h streamable-http16h ago SOperational SignUpSheet.page page.signupsheet/signupsheet Free sign-up sheets, date polls and group cards people join from one link. No accounts, no ads. 475 ms latency100% 24h streamable-http23h ago SAuth required Signvoy com.signvoy/signvoy Send documents for e-signature, track signing status, and download signed PDFs. No API key required. 185 ms latency— 24h streamable-http1d ago SSOperational Sigo Seguros car insurance quotes com.sigoseguros/auto-quote Non-binding car insurance estimates from Sigo Seguros, a licensed agency, not a carrier. 359 ms latency— 24h streamable-http1d ago SAuth required SigParser com.sigparser/sigparser Query contacts, companies, relationships, and communication metrics from SigParser. 1648 ms latency— 24h streamable-http1d ago S—Operational SigRank — AI Operator Benchmarking com.signalaf/sigrank SigRank benchmark MCP: cascade metrics, leaderboard, operator profiles, simulation, diagnostics. 485 ms latency— 24h streamable-http1d ago SAuth required Sigrex io.sigrex/sigrex Create and manage trading strategies, bots, webhooks and signals from any MCP client. 550 ms latency— 24h streamable-http2d ago SROperational Sigstore Rekor io.github.pipeworx-io/sigstore-rekor Sigstore Rekor — the public transparency log for software signatures. 348 ms latency— 24h streamable-http2d ago SAOperational sigtap Agent Tools io.github.unnamedaiagent/sigtap-agent-tools 13 paid x402 tools, USDC/Base. Free check: GET /preview<path>=200 sample. Copy-paste pay: /llms.txt 329 ms latency— 24h streamable-http2d ago SOperational Sigwren com.sigwren/sigwren Trail and ultra running: your Sigwren training, plus race courses, pacing and fuelling for anyone. 840 ms latency— 24h streamable-http2d ago SLOperational Siigo Latam com.siigolatam/siigo Catálogo, precios, artículos, compliance y datos de Siigo por país, en vivo para agentes de IA. 341 ms latency— 24h streamable-http1d ago SOOperational SIIL Ostomy Store com.siilostomy/store Shop SIIL clothing: discover products and sizes, then open a secure SIIL checkout link. 943 ms latency— 24h streamable-http3d ago SEOperational Siima eSIM online.siima/esim Search travel eSIM plans for 150+ countries and buy via Stripe link; eSIM QR delivered by email. 858 ms latency— 24h streamable-http2d ago SDOperational Sikaru Docs ai.sikaru/docs Read-only search over the public Sikaru documentation: managed agents, inference, evals and traces. 630 ms latency— 24h streamable-http5d ago SDOperational Silent Directive Tools io.github.silentdirectivellc-hub/silentdirective-mcp Free tools: 2026 API shutdown scanner, small-business website auditor, photo resale estimator. 452 ms latency— 24h streamable-http3d ago SDOperational Silent Door Repository Handoff Planner com.aibitious.silent/repository-safety-preflight Choose files for an agent handoff using filename decisions. No file contents or credentials. 3441 ms latency— 24h streamable-http2d ago STAuth required Silent tool-failure outcome monitor com.textforagents/silent-tool-failure-outcome-monitor Outcome contracts mined from your clean traces; silent failures checked, with recovery receipts. 132 ms latency— 24h streamable-http2d ago