MCP servers

Check a social post against a platform's real character limit: X, Bluesky, LinkedIn, Threads.

Send physical handwritten postcards from any AI agent. Real pen & ink, USPS, $4.99/card.

Deterministic HTTP/WebSocket testing and policy-gated API execution for AI agents.

URL to screenshot, PDF, or structured extract for AI agents via MCP.

Private encrypted agent messaging, hidden state exchange, delegation, and private inbox workflows.

Inspect local audio files — playback, metadata, loudness, spectrogram.

Ask any SQL database in natural language. Agent explores schema, writes SQL, self-corrects.

A committed markdown dev log and task graph that agents read and write over MCP.

MCP server for generating advanced mock 2D PNG assets for game prototypes.

Institutional crypto intelligence for agents. 30 tools: signals, backtests, regime, triggers.

Exercise-to-muscle mapping: 856 exercises, 65 muscles, workout analysis & alternatives.

Full Paperless-ngx API for AI assistants: search, tag, edit and upload documents, workflows and more

Local memory and context retrieval for AI agents through CueMap.

Vietnam stock MCP: TA signals, Z/F/M scores, foreign flow, whale detection. 2000+ VN stocks.

Search the Art Institute of Chicago collection: artworks, artists, exhibitions, and audio guides.

Search arXiv, fetch paper metadata, and read full-text content.

Browser compatibility and Baseline status for any web feature — offline, from bundled MDN data.

Evaluate, simplify, and differentiate mathematical expressions.

Search INSPIRE-HEP papers, authors, experiments, HEPData records; get citation metrics and BibTeX.

Search CERN Open Data, fetch records, files, analysis environments, CMS good-run lists, HLT paths.

CISA KEV with BOD 26-04 deadlines, SSVC prioritization, and the ICS advisory corpus (CSAF). Keyless.

Search ClinicalTrials.gov — find studies, retrieve results, match patients to eligible trials.

Search DataCite datasets and software, fetch DOI metadata, trace relations, format citations.

Search USGS and EMSC seismic data — real-time feeds, event queries, and earthquake counts.

Look up elevation worldwide, profile route ascent/descent, grid areas, check terrain line of sight.