Which remote MCP servers actually answer

MCP server for Open Archives: Dutch genealogical records and historical page transcriptions.

Open Contracting MCP — international public procurement: government tenders

OpenCorporates MCP — Global company registry data (free, no auth, rate limited)

Open-Elevation MCP — terrain elevation by lat/lon (no auth)

OpenFEC MCP — Federal Election Commission campaign finance data

Open Library MCP — Internet Archive's open book metadata

Public fellowship and grant search with sourced details and live filter vocabularies.

Open-Meteo MCP — weather forecast + historical reanalysis + sister APIs

Open Notify MCP — ISS position + people in space

OpenSanctions MCP — Global sanctions and PEP data (free, no auth required)

Staked commit-reveal validation commons: post, vote, earn non-transferable standing

Global weather via Open-Meteo: forecast, ERA5 archive, marine, air quality, geocoding, elevation.

Search and discover affiliate programs with agent-ready data and commission details.

OpenAgenda MCP.

Validate GPTBot and OAI-SearchBot IP addresses. Remote MCP validate_ip tool.

OpenAI and ChatGPT Ads tools for campaigns, creatives, audiences, and insights.

Focused MCP server for OpenAI image/audio generation (v2.0.0). Wraps endpoints via HAPI CLI.

OpenAIRE MCP — EU research outputs (publications, datasets, software, projects)

OpenAlex MCP — wraps the OpenAlex API (scholarly works, free, no auth)

Access the OpenAlex academic research catalog - 270M+ publications via MCP. STDIO & HTTP.

OpenAQ MCP — wraps OpenAQ v2 API (free, no auth required)

Find air-quality stations and read pollutant observations from government monitors via OpenAQ v3.

Open Beauty Facts MCP — Open Beauty Facts API (free, no auth, keyless).

OpenCage forward + reverse geocoding (free key, 2500/day)

OpenCellID MCP — cell tower geolocation database (free with key)

Live, neutral benchmarks for public RPC latency, oracles, bridges, perp DEX, and prediction markets.

Open Charge Map MCP — global EV charging station database (openchargemap.io).

Find EV charging stations, detail, and reliability check-ins via the global Open Charge Map.

OpenCitations COCI — open-license citation index by DOI

Open Collective public collective/transaction data

Monetize your MCP server or CLI: live OpenCrater network stats + how maintainers earn USDC.

open.canada.ca — Canada national open-data catalogue (CKAN)

opendata.swiss MCP — Switzerland's federal open-data portal (CKAN catalogue).

Generic Opendatasoft portal client (3000+ public OpenDataSoft instances)

Automotive inventory search for AI assistants: vehicles, dealers, deals, and market data.

data.gov.my / OpenDOSM (Department of Statistics Malaysia) — official Malaysian open-data API.

OpenDota MCP — Dota 2 open stats.

OpenF1 MCP — real-time & historical Formula 1 data.

OpenFDA MCP — wraps the openFDA API (free, no auth required)

Query FDA data on drugs, food, devices, and recalls via openFDA. STDIO or Streamable HTTP.

Access FEC campaign finance data. Query data about candidates, money trails, and election filings.

OpenFEMA MCP — US Federal Emergency Management Agency open data.

OpenFIGI — Bloomberg open financial-instrument symbology service

Open Food Facts — collaborative food product database

Barcode lookup, nutrition search, and product comparison for 3M+ crowd-sourced food products.

OpenHolidays MCP.

OpenIBAN MCP — validate an IBAN's checksum + bank code and resolve the

Search open ATS jobs with direct company apply links

Search books and authors, fetch editions, browse subjects, and resolve cover images.

OpenLigaDB MCP — community-run, keyless football / soccer match data.

Accounting MCP for French LMNP furnished rentals: income, expenses, depreciation, tax return & FEC

MCP server for OpenMandate — open protocol for bilateral matching.

MCP server for OpenMandate — open protocol for bilateral matching.

OpenParliament.ca MCP — civic-tech mirror of the Parliament of Canada

Generate QR codes; create, edit & track dynamic QR codes with scan analytics. Free, no watermark.

OpenReview MCP — ML conference submissions and reviews (API v2)

OpenRouter Models MCP.

Routing, isochrones, matrix, snap, elevation, geocode via Openrouteservice.

OpenSea MCP — NFT marketplace data (v2 API)

openSenseMap MCP — citizen-science environmental sensor network (opensensemap.org)

OpenSky MCP — OpenSky Network API (free, no auth for anonymous access)

OpenStates MCP — bills, legislators, votes in all 50 US states

Search bills, legislators, committees, and events across all 50 US states, DC, and Puerto Rico.

Geocode, reverse geocode, and run Overpass spatial queries on OpenStreetMap data.

Swiss federal open data via MCP: TARES tariffs, FINMA registry, NOGA codes (9 tools).

Open Targets disease/target/drug knowledge graph (GraphQL)

Verifiable US tax oracle for AI agents: cited, machine-checkable federal and state tax computation

Open Topo Data — global elevation lookups (multiple DEM datasets)

OpenTopography global DEM rasters + point queries (free key)

Open Tree of Life MCP.

Zero-signup anonymous link-unfurl API. One GET returns clean JSON metadata for any public URL.

Vanlife & RV travel data — fuel prices, weather, currency, events, news (free, 11 MCP tools)

Openverse Creative-Commons image + audio search

Verify document authenticity for AI agents: detect tampering in PDFs and images with evidence.

Detect AI-generated text: the probability a document's prose was LLM-written, with the tells.

Verify a document's citations resolve and match, recheck its math, flag unsupported claims.

OpenWeather MCP — wraps the OpenWeatherMap API (openweathermap.org)

Zero-signup business-day date-math API: add days, count days between dates, is-business-day.

Read-only MCP server for the OPERANT AI operating-agent calibration benchmark.

Agent tools for the Ophis intent-based DEX: parse, quote, build, relay orders, look up fee tiers.

Discover Norwegian experiences & activities by county, category, weather, season and price.

Keyless Saskatchewan labour-market data: measured wages and rents, roles, jobs, outcomes, pathways.

Opsera AI Agent MCP server providing authenticated DevOps automation over SSE

Optionality — AI-judged options trading drill, Tollbooth-monetized MCP server

Unusual options activity on 7,000+ US stocks: top prints, streaks, IV rank, sentiment, sectors.

Authenticated async Opus 4.8 Agent agent with status polling and artifact results.

Free no-account URL security scan: 0-100 Launch Readiness score for any live site in ~15 seconds.

OQMD (Open Quantum Materials Database) MCP.

Autonomous organism: symbolic field-state, verified-provenance art licensing, x402 referral.

MCP tools: collectible price-fairness, recall safety, drop tracking, card grading, settlements.

Authoritative cited answers about saving family stories. Published by InkTree.

Cited Hermès price & resale market data as MCP tools, with attribution. Not affiliated.

Nonpartisan U.S. Congress data: bill decodes, rep lookup, bilingual EN/ES, read-only, no accounts.

MCP server for Orb — customers, subscriptions, invoices, usage and costs (usage-based billing).

162K words, 226K lessons, 21K assessments, knowledge graph. Deterministic JSON.

AI visibility checks, software recommendations and tool comparisons from measured AI answer data

Orbit Zürich: Workshop-Räume, Preise und freie Slots abfragen, Buchungsanfragen stellen.

On-chain stablecoin market cap and Bitcoin institutional holdings data.

Read-only MCP server for the OrchestKit docs: full-text search + Markdown fetch. No auth.

ORCID public researcher records (works, employment, education)