MCP Server Directory

Reference / test server with prompts, resources, and tools.

Web content fetching and conversion for efficient LLM usage.

Secure file operations with configurable access controls.

Tools to read, search, and manipulate Git repositories.

Knowledge graph-based persistent memory system.

Dynamic and reflective problem-solving through thought sequences.

Time and timezone conversion capabilities.

Checks live x402 routes across Base, Solana, and Algorand. $0.003 USDC settles only for a valid live eligible route; normal typed misses are not settled. Free preview and validate tools. Seller payment is separate; the agent keeps its wallet. Remote MCP: https://402signal.com/mcp (x402-capable client required for paid routing).

Zero-dependency stdio bridge to Moltline Studio's 22 hosted MCP servers (160 tools, 110 free) — code review, agent governance, data & business math, regulatory deadlines, crypto tax lots, routing/optimization and more. Free tier needs no account or API key. Remote streamable-http at `mcp.moltlinestudio.com/<server>`.

Cross-LLM marketplace of vetted "doer" agents — itself an MCP server. Automated security scan + human review, credential-to-host binding, and sandboxed hosted code with default-deny egress. Remote endpoint `https://mcp.findagent.cloud/mcp`.

Discover BotHire, the machine-to-machine marketplace where autonomous AI agents hire each other and settle in USDT & USDC (gasless) across Base, Arbitrum, BNB Chain & Solana. Search skills/agents by capability + trust score, read live market demand, and get a step-by-step participation guide. `npx -y bothire-mcp`

An edge firewall for AI agents to securely expose internal PostgreSQL databases and APIs with strict validation.

Contract validation and self-healing failover for LLM APIs. 6-dimension verification (structure, schema, latency, cost, identity, integrity) in 22μs P50. 87 self-healing rules with MAPE-K autonomic loop. BYOK direct connect to 9 providers (OpenAI, Anthropic, DeepSeek, Moonshot, Zhipu AI, Qwen, SiliconFlow, Groq, Together AI). L3 failover in 949ms E2E. Install: `npx -y correctover-mcp-server`.

Pay-per-call x402 gateway: one MCP server for 90+ agent tools (utilities, DNS/WHOIS, blockchain RPC, market data, prediction markets, DEX data, security audits) plus an OpenAI-compatible LLM gateway. USDC on Base, free-trial calls per agent. `pip install ddg-agent-services-mcp` or remote `https://mcp.daedalusdevelopmentgroup.com/mcp`.

Local stdio MCP server for x402-powered paid crypto intelligence: preflight checks, trade decisions with `decision_id`, later audit against real prices, risk state, signal history, and agent automation search over USDC micropayments on Base.

Real-time anomaly detection powered by NASA-derived sequence mining across blockchain, mempool, stablecoin depeg, aviation, and GitHub signals via x402 USDC micropayments on Base. `npx -y @forgemeshlabs/anomaly-mcp`

A unified Model Context Protocol server implementation that aggregates multiple MCP servers into one.

Unified API for AI agents — 180+ tools across geocoding, weather (NWS), climate stations (NOAA), earthquakes (USGS), tides (NOAA), points of interest (OpenStreetMap), patents (USPTO ODP), US case law (CourtListener / Free Law Project), Federal Register, Wikipedia, scientific papers (arXiv / PubMed / Semantic Scholar), AI summarize / translate / extract / screenshot / image-describe, image compression, DNS / WHOIS, crypto address-validate + EVM gas oracle, OFAC sanctions screening, US Census ACS demographics, airport / ZIP lookup. Sub-cent to a few cents per call in USDC on Base via x402 — no API keys, no signup. `npx -y @2sio/mcp`

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

Discover and call 400+ practical APIs through six MCP tools: search OCR, image, audio, web, math, conversion, and geodata utilities for free, then pay per call with x402 USDC on Base — no account or API key. `npx -y @forgemeshlabs/utility-grid-mcp`

One MCP server exposing 66 specialized intelligence APIs (660+ endpoints) — finance, crypto, legal, immigration, healthcare cost, real estate, tax, climate, sports, science, and more — each an x402 pay-per-call tool in USDC on Base and Solana. Includes a `discover` meta-tool over the whole network and a cross-vertical referral graph. No API keys. `npx mcp-pulsenetwork`

The graded MCP registry: live-probes every remote server in the official registry (initialize, tools/list, schema quality, latency, provenance) and publishes evidence-backed grades — searchable by agents via its own MCP endpoint at [mcpqueen.com](https://mcpqueen.com).

Pay-per-call x402 gateway: one remote MCP server for 1,680+ agent tools (crypto data, web scraping, AI inference, CAPTCHA solving, token security, DNS/WHOIS, gas monitoring, DeFi data). USDC on Base, 5 free trial calls per registered wallet. Remote `https://minia2a.uk/mcp`.

Daily-verified LLM API pricing dataset (44+ models, CN & global) with a hosted MCP server for live price queries and token cost estimation.

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.

Bridge any MCP server to the agent:// network — DNS-like identity, discovery, and trust for AI agents. Makes your tools discoverable and callable by other agents via `agent://` URIs with mTLS, trust scores, and capability search.

AgentBodega MCP gives agents a live catalog of 65 x402-payable HTTP tools across search, public data, social media, status checks, media conversion, and agent-readiness checks. No API keys; install with `npx -y @agentbodega/mcp`.

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.

Autonomous Agent-to-Agent (A2A) commerce framework via Nostr NIP-90 and Cashu eCash micro-settlements.

Unified job aggregator for AI agents across 9+ platforms (x402, RentAHuman, Virtuals, etc).

Agent-native job search over employer ATS APIs (Greenhouse, Lever, Ashby, Beisen) — 125 companies and ~15k live postings with freshness verification, ghost-job scoring and deep-link apply channels. Résumés never transit the server; matching runs client-side.

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

Search, integrate and monetize MCP connectors on the AgentHotspot MCP marketplace

MCP server and CLI to search the Remote OpenClaw directory of 13,870+ MCP servers, 4,384+ agent skills, and plugins. Returns names, links, and install commands. Install: `claude mcp add remoteopenclaw -- npx -y remoteopenclaw`. CLI: `npx remoteopenclaw search <query>`. Free, no API key.

Agent-first skill marketplace where AI agents discover, purchase, and integrate skills via MCP protocol. Supports 7+ platforms including Claude, hGPT, and Gemini.

AnyAPI: hundreds of scraping and data APIs (social media, search results, Google Maps, e-commerce, general web data) behind one MCP server - one key, USD pay-per-request, no subscriptions, normalized JSON schemas, and automatic failover across upstream providers. Agents discover, inspect, price and run any of them with the same loop (`search_apis`, `get_api`, `quote_api`, `run_api`); failed calls are never charged. Install: `npx -y anyapi-mcp`, or point a remote client straight at `https://api.getanyapi.com/mcp`.

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](https://clirank.dev).

Turn any REST API into a hosted MCP server. 18 free public servers (GitHub, Stripe, Slack, OpenAI, Notion, and more) — no setup required, bring your own API key.

**aimarket-mcp-packager** hub plugin: turn AIMarket capabilities into self-hosted MCP servers (Docker image + `mcp_manifest` + Claude Desktop `mcpServers` config). Part of 15-plugin AIMarket Hub ([modelmarket.dev](https://modelmarket.dev)); protocol discovery at `/.well-known/ai-market.json`. Install: `pip install aimarket-mcp-packager`.

Local proxy that collapses N downstream MCP servers into 4 meta-tools with progressive tool discovery (measured: 122 tools → 4, ~28.6K tokens of definitions saved), compresses large tool outputs (HTML→Markdown, JSON structure summarization, base64 stripping — 60–95% measured on real pages/APIs) with full-output retrieval via `read_more`, and prints a per-session token-savings report. Security-relevant outputs are never silently compressed. Install: `npx -y context-firewall --config config.json`

One MCP server in front of 950+ data APIs — SEO and AI visibility, finance, social, web search, sales and agent mail. `tools/list` returns five meta tools rather than hundreds: `search` finds an operation from a plain-language task, `get_details` gives its contract and price, `use` runs it, and `max_price_usd` refuses anything above a cap before any spend. OAuth, nothing to paste. Install: `npx -y @aisa-one/mcp`, or point a remote client straight at `https://mcp.aisa.one/mcp`.

MCP gateway that registers upstream MCP servers and fronts them behind one governed Streamable HTTP endpoint (`/mcp`): per-tool access control by caller API key, guardrails over tool arguments and results, rate limits, and usage logs. The same self-hosted gateway also proxies LLM and A2A agent traffic.

One MCP for 160+ live web-data APIs — search engines, social (Reddit, TikTok, Threads, Bluesky), e-commerce (Amazon, eBay, AliExpress, Etsy), real estate (Zillow, Redfin), jobs, travel, news, finance and company/people intel. Clean JSON from sites that block scrapers; one key, one shared credit pool, free tier. Remote streamable-http at api.reefapi.com/mcp.

Agent-to-agent capability exchange (MeshMarket): agents browse keylessly, self-onboard via mesh_signup, rent memory/reasoning/safety per call, list their own tools with mesh_publish, and settle in closed-loop credits on a debit-first ledger.

Agent-to-agent marketplace where AI agents discover, invoke, and pay for services from other agents using USDC on Base L2.

MCP server for DeepSeek AI with chat, reasoning, multi-turn sessions, function calling, thinking mode, and cost tracking.

Build, validate, and deploy multi-agent AI solutions on the ADAS platform. Design skills with tools, manage solution lifecycle, and connect from any AI environment via stdio or HTTP.

Meta-MCP server that unifies multiple AI coding assistants (Codex, Claude Code, Cursor, Gemini) through intelligent auto-discovery and standardized MCP interface, providing zero-configuration access to the entire AI coding ecosystem.

CLI + stdio MCP bridge for the [awesome-mcp.tools](https://awesome-mcp.tools) catalog (2,000+ MCP servers, refreshed every 6h). Search from terminal (`npx awesome-mcp search postgres`) or wire the hosted server into Claude / Cursor / Codex / Cline / Windsurf. Endpoint: `https://awesome-mcp.tools/mcp` (Streamable HTTP, no auth). Zero deps, MIT.

Hosted multi-model AI media + chat: image, video, audio, face-swap and talking-avatar generation plus chat across 300+ models (Claude, GPT, Gemini, DeepSeek…) from one balance and one key.

Access 30+ AI models (GPT-5, Claude, Gemini, Grok, DeepSeek) without API keys. Pay-per-use via x402 micropayments with USDC on Base.

Pay-per-request AI inference for agents: chat completions across any supported model via x402 with automatic Solana USDC payments. No API keys, no registration, fail-closed spending caps. `npx -y @bridgenode/mcp` or remote `https://bridgenode.cc/mcp`.

x402 Discovery Hub. Search engine for the agent economy with 1450+ services indexed. Pay with USDC on Base via x402.

Browse 160+ LLM models (OpenAI, Anthropic, Google, Qwen, DeepSeek, …) with live pricing — no API key required for catalog tools. Routes chat completions through the OrcaRouter gateway with automatic fallback. `npx -y @orcarouter/mcp`.

One server. All tools. A unified MCP platform that connects many apps, tools, and services behind one powerful interface—ideal for local devs or production agents.

Dependency graph + 15 MCP tools for AI coding assistants. Parses TypeScript, JavaScript, Python, Go, Rust, and C. Arc diagram visualization, health scoring, dead code detection, and temporal graph.

Self-hosted MCP Server registry for enterprise AI Agents

Agent-to-agent marketplace middleware — MCP-native discovery, negotiation, and transaction between AI agents

Governance proxy for MCP: pair once and route your MCP servers through policy gates (allow / deny / human-in-the-loop approval), DLP redaction before the model, and cost caps, with every tool call recorded to a hash-chained audit log exportable as an Ed25519-signed, offline-verifiable evidence pack. Single-file binary daemon (macOS / Linux / Windows); downloads and install docs in the linked repo.

Search and discover AI agents, skills, prompts, bundles and MCP connectors from a curated catalog of 4500+ assets.