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Hosted mock-API MCP server: agents create live REST/GraphQL mock APIs, import OpenAPI/CSV/db.json, seed fake data, query and write records — free, no auth, stateless Streamable HTTP.

Fourteen hosted MCP servers over Streamable HTTP - code review, agent governance, business-day math, analytics, commerce math and SKILL.md linting - free tier needs no account or credentials.

Local macOS notebook that is also an MCP server. Any AI assistant — Claude, Cursor, ChatGPT, Cline, Zed — reads and writes your notes. 22 tools. Free, local, private.

Verified NFL stats and Sleeper league context, callable from any AI. Free, no account.

Spec-driven development platform. Lets Cursor, Claude Code and other MCP clients read and write MySpec projects and spec bundles (constitution, requirements, solution, tasks). 31 tools. Requires a MySpec account; free plan available.

Nano Banana Pro AI image editor free online by Google Gemini AI.

Remote MCP server for Nano Studio Pro, a personal asset repository with search built in. Stop losing work across local folders, external drives and a dozen different apps: everything you make or upload lands in one place and is detection-scanned on arrival, videos as well as photos, so it is searchable by the objects, colors, textures and scenes inside it. 35 tools: fast detection-aware search (text, color, similar-image, browse, item bounding boxes), free scans, imports, projects and tasks, plus image generation, restyle, cutouts, upscaling, image-to-video, and sprite or sticker sheets with frame rects. Streamable HTTP with OAuth 2.1; personal access tokens as fallback. Search before you regenerate.

Remote MCP server with Swiss Ephemeris astrology tools: natal charts, transits, synastry, solar returns, best days and city rankings as JSON. Free API key: 10 calls a day.

Hosted MCP server for web search. Ranked results with page passages already extracted, plus clean markdown extraction of any URL. $2 per 1,000 searches, 1,000 free credits a month, no signup.

Local MCP connector for narration, transcription and LLM text: free discovery and quotes, optional capped USDC payments on Base; cloning guidance.

Remote MCP server for Never Boring AI, the LinkedIn content tool for solopreneurs and freelancers. Never Boring AI builds a content calendar from your strategy (your offer, your audience, your content pillars), so you always know what to post and when. Plug it into Claude or ChatGPT with one server address and a consent screen, no token needed; Cursor, VS Code and Windsurf connect with one line of config. Your AI can then read your plan and posts, create and edit drafts, schedule them and publish them on LinkedIn. €39 per month, first month at 50% off.

Real-time world news for AI agents — events clustered from hundreds of sources, classified by 12 topics and 30+ regions, ranked by importance. Free, no API key.

23 remote MCP servers (weather, sky, law, EU/US policy, research papers, security, reference) behind one endpoint and one key; every answer names its sources; 50 free calls a month per server.

Today's on-duty pharmacies (nöbetçi eczane) in all 81 provinces of Türkiye and the TRNC: list by province/district or find the nearest to a location, with address, phone and duty hours. Free, read-only, no authentication.

Get a PDF e-signed under ESIGN and UETA by up to 5 people, or sign it yourself, with a signed certificate. The agent quotes the price and waits for approval before sending. First self-sign is free. Remote MCP (streamable HTTP), API-key auth, US only.

Company, KYB, VAT, sanctions, LEI and address data for 15 EU countries (DK, NO, SE, FI, IE, UK, FR, DE, CZ, PL, LV, EE, NL, BE, LU). Free tier 100 lookups/day at addonnordic.com.

Verified local-business leads for agents: campaigns return send-ready contacts, every email checked against the live mailbox with a verification receipt. Credit-based with per-key budgets; 25 free at signup.

Checks the outcome after a handoff, when your agent's own tools can't confirm it. Watches one field of one public HTTPS JSON record, with a same-site control, for 20-120s; returns PROVED, DISPROVED or INCONCLUSIVE with a signed receipt. Reports what the source says, not the real-world event. INCONCLUSIVE is free. 5 free checks, then USD 1 each via an existing Link wallet; no card checkout yet.

US National Weather Service data for agents: active alerts by two-letter state code and five-period forecasts by latitude/longitude. Discovery is free; each call is paid in USDC on Base over x402. US locations only.

MCP server giving Claude AI access to 22+ NYC public-record databases (DOB violations, HPD complaints, ACRIS deeds, DOF sales, 311, FDNY, NYPD, evictions, PLUTO) for real estate due diligence. Free trial. Try without install at nycpropertyintel.com/chat.

Mailercloud is an email marketing platform for growing businesses. The official Mailercloud MCP server lets AI assistants work directly in your Mailercloud account. You can create, schedule and test campaigns, and manage contacts, lists, tags, segments, templates, webhooks and suppressions. You can also send transactional email, and get campaign analysis with letter grades against industry benchmarks, campaign comparisons, an engagement funnel, inbox placement data and a pre-send audit. It is a remote server with nothing to install. Sign in with OAuth 2.1 or use a Mailercloud API key. It works on every Mailercloud plan, including the free plan.

Search and inspect 50,000+ Agent Skills for Claude Code, Codex and other agents. Free, read-only, no account. Hosted at https://omgskills.com/mcp or local via npx -y omgskills-mcp.

Hosted MCP tools for tracking GitHub issue and Stripe test-payment outcomes, reconciling uncertain actions, and controlled retries. API-key authentication; free developer beta.

Ask free LLMs (DeepSeek, GLM, Gemini, Mistral and more) for a second opinion, one model or several side by side. onomeo is in public beta: not every feature is guaranteed to work, and feedback is welcome.

Cert-free PSD2 bank data API for AI agents — read EU bank transactions and balances without buying an eIDAS QWAC certificate

Query 20.5M French companies from your AI: identity, financials, directors, legal notices, public contracts and court rulings. Free, no API key.

Search PII-free opportunities, availability, and live events; prepare safe no-write form handoffs.

Research, lead-time and price data on factory and datacenter equipment procurement: transformers, switchgear, gensets, chillers, machine tools, tariffs and grid interconnection, with the source document and date on every row. 12 read-only tools, no auth needed for the free layer.

Weather forecasts, air quality, UV index, historical data, and alerts for AI agents. 5 tools, powered by Open-Meteo, free, unlimited, no API key.

A free, read-only MCP giving agents live model IDs and verified prices across 16+ sources, structured for System-1 model routers.