MCP Servers

API intelligence for AI coding agents. 387 APIs scored on agent-friendliness with tools to recommend, compare, check scores, and discover APIs. Install: npx clirank-mcp-server. Web: clirank.dev.

Unified API gateway and marketplace for 300+ AI agents. One API key, REST + streaming, 90% creator revenue share, health monitoring. Self-hostable (MIT).

AI agent discovery and marketplace on Nostr with Solana payments (SOL, USDC). NIP-89 discovery, NIP-90 jobs, NIP-44 v2 encryption, on-chain micropayments.

MCP server to search 4,800+ MCP servers, AI agents, CLI tools and agent skills. Install: npx -y a2asearch-mcp. Ask Claude: "Find MCP servers for database access". Free, no auth required.

8 bundled intelligence endpoints (security, company, threat, compliance, sales, sports, property, health) via x402 micropayments on Base.

When tool count exceeds LLM context limits, accuracy collapses (248 tools → 12%). graph-tool-call builds a tool graph from OpenAPI/MCP specs and retrieves multi-step workflows via hybrid search (BM25 + graph traversal + embedding), recovering accuracy to 82% with 79% fewer tokens. Zero dependencies. Also works as an MCP Proxy

A tool-augmented LLM system for the full PDDL planning pipeline, improving reliability without domain-specific training.

MCP server for the Storyblok headless CMS with 160 tools across 30 modules. Manage stories, components, assets, workflows, releases, and more via AI assistants.

Reduces MCP tool description token costs by 40-70% through pure text schema distillation.

Access real-world people who listed themselves to be hired by agents. Search by skill, location, and equipment, send job offers, post listings, and message workers. Free tier, Pro subscription, and x402 pay-per-use.

Task management API built for AI agents. Create, delegate, and track tasks with agent identity, delegation chains, lifecycle webhooks, and persistent context. Self-hosted or hosted tier at delega.dev.

Google Workspace MCP server exposing 23 curated tools for Drive, Sheets, Calendar, Docs, and Gmail via the gws CLI.

MCP server for Tokyo nightlife event discovery, venue search, performer info, AI recommendations, and VIP table booking.

AI-powered speech tools: pronunciation assessment with phoneme-level feedback, speech-to-text with language detection, and text-to-speech with multiple voices.

AI sports betting picks, odds, injuries & line movement for NBA, NHL, NCAAB and MLB giving you visual bet slip cards with edges.

MCP server for VK (VKontakte) social network API. Access users, walls, groups, friends, newsfeed, photos, and community stats.

MCP server for Substack — read posts, manage drafts, publish Notes, get comments, and upload images. Safe by design: cannot publish or delete posts.

MCP server for AI agent for cybersecurity: automate assessment of documents, questionnaires & reports. Multi-format parsing, RAG knowledge base,Risks, compliance gaps, remediations.

Mandatory human approval gate for autonomous AI agents. Intercepts critical, irreversible, or financially significant actions and routes them to a human via Telegram for real-time approve/reject. Raises workflow success probability from 81.5% to 99.6%.

Free AI agent skill security scanner. Scan SKILL.md, MCP configs, and system prompts for credential theft, prompt injection, zero-width character attacks, and ClawHavoc indicators. Supports OpenClaw, Claude Code, Cursor, and Codex. No signup required.

URL fetcher and HTML-to-markdown converter with three-layer prompt injection defense: pre-extraction sanitization of hidden/off-screen elements and non-printing Unicode, 15-pattern risk scanning (HIGH/MEDIUM/OK), and per-request session-salt content boundary wrapping.

Wireshark network packet analysis MCP Server with capture, protocol stats, field extraction, and security analysis capabilities.

Pre-execution governance for AI agents. Intercepts and validates every agent tool call through an 8-stage pipeline before execution — risk classification, behavioral drift detection, hold queue for dangerous operations, and complete audit trail. 45 tools, 658 tests.

Third-party certifying proxy — sign any HTTP call (AI agents, webhooks, microservices) with an independent Ed25519 signature, RFC 3161 timestamp, and Sigstore Rekor anchor. Works with Claude, GPT-4, Mistral, LangChain, AutoGen, or any HTTP client.