Free MCP servers · page 166

Compare prepaid travel eSIM plans by destination, data and trip length, and plan multi-country trips.

Official 2026 USA Pickleball rules, free 4-decimal player ratings, and court/club directory.

Birth charts, transits, moon phase, retrogrades, synastry and solar returns.

Know when your agent silently stops: deadman, overrun, HTTP, TLS and content watches; the first call issues a key.

Read and post to permanent, time-ordered rooms for agents; a short puzzle grants a 24-hour token, no account.

Agents design parts of an open sky130 AI chip; formally verified entries compete to be fabricated.

Dated, source-linked AI-engineering archive: what changed since a date, topic briefs, forecasts with a track record.

Search merchants, inspect offers, and validate checkout or negotiation before buying.

Free scheduling: list event types, read availability, book, verify and cancel; tools need a key.

Publish, recall and update persistent private HTML pages at a personal address; publishing needs OAuth.

Browse prints and merch about the nights machines beat us, build a basket and check out.

Gateway for the API your AI agent calls: per-app keys, allowed calls, loop breaker, approvals and an audit log.

Search US jobs by driving commute, pay and seniority; optional OAuth sign-in saves jobs and searches.

Search and read Web3 security education: 120 articles and a 230-term crypto scam glossary.

Search AliExpress in any language and get listings with price, rating, orders and a link.

How websites treat AI agents: bot walls, JavaScript needs, robots rules and llms.txt, before you fetch.

societe-agents-ia-arch/open-agent-polity

Open-source polity where AI agents join, create topics, deliberate, amend, vote, follow debates and invite other agents.

Find US BJJ gyms with weekly schedules, open mats, and visitor drop-in prices.

Price any options trade with up to eight legs, what-if scenarios on price, time and volatility, and the Learn library.

Checks whether AI agents can find, trust and pay a business, and looks up a verified domain key and prices.

Paris jewellery house catalogue: recycled 18k gold, lab-grown diamonds, collections and bespoke.

Hand-drawn icons, illustrations and isometric drawings, searched by meaning and fetched as SVG, JSX or a file.

Web analytics for your site and which AI crawlers and assistants read it; tool calls need an API key.

Community of human-agent pairs: seek Cards other pairs wrote from real work, store your own, report what worked.

230,000+ Pakistani court judgments: search by issue, question, court, judge or citation; walk the citation graph.

Greeting card designs with your message inside, each linking to order it printed and mailed in the US.

Explains WCAG 2.2 accessibility rules for free; with an account, what to fix on your sites and new checks.

Mail one-off USPS letters from chat: validates the US address, shows a PDF preview and total, and waits for approval.

Marketplace where AI agents buy from and sell to other agents: pay on delivery via Stripe, signed receipts.

Render PDFs and PNG images from HTML, Markdown, URLs or Handlebars templates; tools need a free key (100 renders/mo).

Guitar pedal specs, new and used prices, 90-day price history, review scores, pedalboard checks and buying guides.

Where AI agents meet: discover, match and get introduced to other agents, with human consent before any intro.

Search people and companies in plain English and get verified work emails; tool calls sign in with OAuth or an API key.

French property data: price per m² by municipality, local market summary and planning permit requirements.

Send a letter as printed USPS Certified Mail with tracking, from $13.18.

Car dealership sales tools from Pinpoint, the sales intelligence platform for car dealerships.

Stage, declutter, and enhance real-estate listing photos, and turn them into listing videos.

Test Meta advertising account, signal-health, and performance tools with synthetic data.

Make, save and revise personal browser games, then share a gift link with the recipient.

Independent European news in four languages: search with sources, explainers with maps, briefs and live stories.

Score, enrich, and publish your Shopify or WooCommerce catalog so AI agents can find and recommend it.

Hotel availability, public BAR rates, and a direct booking link for Portmans Motor Lodge in Hastings, New Zealand.

Live email checks: 24 blacklists, spoofing/BEC grade, URL redirect tracing, full email spam tests, domain age and WHOIS.

Upcoming restaurant and bar openings in NYC, LA and Texas from liquor license and permit filings.

Scans an MCP server for security gaps before your agent connects.

Cost recipes, set menu prices, work out UK GP, scale recipes to covers and build kitchen prep lists for chefs.

Sourced data on 4,900 AI companies, open AI jobs and dated AI news; every result links to its page.

Compare live hotel and flight prices across Booking.com, Agoda, Trip.com and Traveloka, in USD.