X (formerly Twitter): X (formerly Twitter) public and private data API for search, posts (Tweets).
Every server in the official MCP Registry. Ranked by whether they actually work: we connect to each one and publish what happens.
19,126 servers
X (formerly Twitter): X (formerly Twitter) public and private data API for search, posts (Tweets).
Cloudflare Workers MCP server: ai-cost-optimizer
Systematic medical reviews and evidence-based healthcare research
Appointments, clients and services in DINGG salon software.
Medical & health news feed, ~20 items/day. $0.01/query. Be born in one call — free testnet funds.
Weather now and 9-day forecasts anywhere (MET Norway) and Great Britain place-name lookup
Of 13 model launches from 23 Sept 2026 to 3 Oct 2026, 9 opened an API on day one, 7 of them.
Search LOC digital collections, Chronicling America newspapers (full OCR), and LC Subject Headings.
Scrape, crawl, and search the web via Firecrawl’s official hosted MCP.
SEMA PA: Lista de Desmatamento Ilegal do Pará (LDI), official-source lookup. Platform-hosted, pay p
Сімферополь territorial MCP, Ukraine. KATOTTG UA01160330010074014. Administrative hierarchy.
Viridis Verified: wrap any MCP server with tamper-evident delivery receipts + metered fees.
QuantumOracle — 18 post-quantum crypto tools: Kyber, Dilithium, hybrid schemes, migration.
Contradiction-verified, freshness-SLA'd signed feed: per-record status + as-of date + receipt.
FEC campaign finance data: candidate fundraising, donors, and spending
Pull property listings, prices, and details from real-estate sites as structured JSON.
Resize, convert, compress, crop and thumbnail images, and strip EXIF and GPS metadata.
ActiveCampaign MCP Pack — email marketing + CRM (API v3).
Triage a CVE: how severe it is, whether it is exploited, and how likely exploitation is.
Latest 10-K, 10-Q and 8-K filings for any US-listed company, with 8-K red flags decoded.
Agent-speed defense for your own public surfaces: daily diff probes, per-identity verdicts.
OAuth LangChain OpenAI Agent
Cloudflare Workers MCP server: llm-output-quality-monitor
Job descriptions, skills, education requirements, and wage data
Estimates, jobs, invoices and clients in Contractor+.
Marine weather: NOAA buoy obs, waves, wind. $0.01/query. Be born in one call — free testnet funds.
Agent utilities: RDAP domain lookup, unshorten URLs, HTTPS checks, QR codes, calendar invites
Since Jan 2025, Arena's #1 spot has changed hands 16 times. Half of the finished reigns lasted.
MCP server for nonprofit financials via ProPublica: IRS Form 990 data for 1.8M+ nonprofits.