API Integration
| Server | Language | Stars | Downloads |
|---|---|---|---|
| Signet MCP Tools MCP server exposing Signet cryptographic signing, verification, and content hash tools over stdio. | TypeScript | - | - |
| SignNow Api Helper MCP MCP server for SignNow API helper tools (stdio only). | Python | - | - |
| signnow-mcp-server A Model Context Protocol (MCP) server that provides SignNow API integration capabilities. | Python | - | - |
| signoz-mcp-server SigNoz MCP server: access metrics, traces, logs, alerts, and dashboards via AI assistants | Go | 123 | - |
| Signs of AI Writing Bilingual (EN/ES) AI-writing detection that shows the evidence, plus originality checking. | — | - | - |
| SignUpGenius Manage SignUpGenius sign-ups, slot reports, and groups via the API from AI agents. | TypeScript | 0 | - |
| Signvoy Send documents for e-signature, track signing status, and download signed PDFs. No API key required. | — | - | - |
| sigrok MCP Server Wraps sigrok-cli for signal analysis: capture data, decode protocols, and query instruments. | — | - | - |
| Sigstore Rekor Sigstore Rekor — the public transparency log for software signatures. | — | - | - |
| sigtap Agent Tools 13 paid x402 tools, USDC/Base. Free check: GET /preview<path>=200 sample. Copy-paste pay: /llms.txt | — | - | - |
| @sigvardt/meta-mcp-server The most comprehensive MCP server for Meta Business Suite — 200+ tools across Facebook Pages, Instagram, Threads, Ads Manager, Commerce, Conversions API, and more | TypeScript | - | - |
| Siima eSIM Search travel eSIM plans for 150+ countries and buy via Stripe link; eSIM QR delivered by email. | — | - | - |
| SilbercueSwift — iOS MCP Server iOS MCP server: 55 tools, xcresult parsing, UI automation, 15ms screenshots. | — | 4 | - |
| Silent Directive Tools Free tools: 2026 API shutdown scanner, small-business website auditor, photo resale estimator. | — | - | - |
| Silicon Analysts Dated, sourced semiconductor data: chip costs, HBM/wafer pricing, fab capacity, policy, forecasts. | — | - | - |
| SiliconBridge Human-in-the-loop API for AI agents. CAPTCHA, OTP, KYC, and approvals by real humans. | — | - | - |
| Silpo MCP Server MCP server for Silpo online supermarket: products, cart, delivery, recipes. | TypeScript | - | - |
| Silvanexum Spend control for AI agents - cost attribution, budget caps, and signed runs as MCP tools. | TypeScript | - | - |
| Simap simap MCP — Swiss public procurement tenders and awards (keyless). | — | - | - |
| SimConnect MCP MCP server for MSFS SimConnect - full read/write access to SimVars, L-vars and events | Python | - | - |
| simframe Always-warm iOS Simulator and Android emulator frames: agents read the screen in ~20ms | TypeScript | - | - |
| Similaridade de Identidade (Argentina) Compares the provided data of a person in Argentina (DNI, name, birth, address) and returns the simi | — | - | - |
| Similaridade de Identidade (Brasil) Compares the provided data of a person in Brazil (CPF, name, birth, address) and returns the similar | — | - | - |
| Similaridade de Identidade (México) Compares the provided data of a person in Mexico (CURP, name, birth, address) and returns the simila | — | - | - |
| @simlir-ai/mcp-server A thin MCP server for the simlir public product intelligence API. | TypeScript | - | - |