MCP servers

HTTP request echo from Postman Echo. No key required.

Islamic prayer times for a city from AlAdhan. No key required.

Prediction market contracts and prices from PredictIt. No key required.

Linux game compatibility from ProtonDB. No key required.

PRX public radio podcasts and episodes.

Look up chemical compound properties and synonyms from PubChem. No key required.

Search PubMed biomedical literature and fetch article summaries. No key required.

Radio Garden live radio places. No key required.

RainViewer radar tile timelines.

Random animal photos with facts from Some Random API. No key required.

Random English words from the Random Word API. No key required.

Look up protein structures and search the RCSB Protein Data Bank. No key required.

Keyless MCP server for Reactome: search biological pathways, get pathway details, species,...

Keyless MCP server for Reddit search via Arctic Shift: posts and comments by subreddit and query.

MCP server for redirection.io: projects, rule MCP: real tools for real work.

Test, describe, and validate regular expressions locally. No network and no key.

Remote jobs from RemoteOK. No key required.

Repology: package versions across many software repositories.

Test objects from restful-api.dev. No key required.

Rhyming words from RhymeBrain. No key required.

Random riddles. No key required.

Roll dice, flip coins, and generate random values locally. No network and no key.

Roblox user profiles from the public API. No key required.

Build RoboHash robot avatar image URLs from any seed text. No key required.

Search ROMs across Internet Archive, ROMsgames, CoolROM, and more. Verify checksums and parse saves.