RealWorldAPIs
Evidence-first registry of real-world APIs for AI agents, with verified metadata and comparison.
Connect it
Settings → Connectors → Add custom connector
URL: https://mcp.realworldapis.com/mcpSettings → Apps & Connectors → Advanced → Developer mode
Create connector with URL: https://mcp.realworldapis.com/mcp{
"mcpServers": {
"realworldapis": {
"url": "https://mcp.realworldapis.com/mcp"
}
}
}claude mcp add --transport http realworldapis https://mcp.realworldapis.com/mcp{
"servers": {
"realworldapis": {
"type": "http",
"url": "https://mcp.realworldapis.com/mcp"
}
}
}6 tools, verified live
find_api_for_taskread-onlyFind the best APIs for a natural-language physical-world task. Use this for open-ended task or outcome-based recommendations; use search_apis when you already know exact filters, get_api for one known API, or compare_apis for known candidates. Returns an authoritative canonical structured_results shortlist plus a best-effort AI comparison restricted to that shortlist. The canonical engine now appl
search_apisread-onlySearch the canonical registry when you already know keywords or exact requirements. All supplied filter groups combine with AND logic; array capability filters require every supplied value, and protocol fields match the exact Yes/No/Unknown status, so Unknown never satisfies Yes. Results include each API's capability_summary and direct decision-profile URL. Results are sorted by agent_readiness_sc
search_capabilitiesread-onlySearch the canonical 770-capability Verified/High decision graph directly. Use this when the question is about what an agent can actually do and under what execution conditions: task/capability text, API, category, action type, acted-on object, human approval, physical consequence, irreversibility, sandbox, hardware dependency, access friction or setup. All supplied filter groups combine with AND
verify_requirementread-onlyVerify whether one specific API can satisfy one exact requirement using the canonical Verified/High capability graph plus linked assertion evidence. Returns YES, NO, PARTIAL or UNKNOWN with matched capability, access/setup prerequisites, approval, safety, reversibility, reliability, coverage and other requested dimensions; direct provider facts remain distinct from inferred policy assertions. Unkn
get_apiread-onlyRetrieve one canonical API decision profile when you already know its name or slug. The response includes the full Verified/High capability profile with execution, access, approval, reversibility, physical-consequence and evidence fields. Exact slug or exact API name is preferred; a partial identifier is accepted only when it uniquely resolves to one record.
compare_apisread-onlyCompare 2–8 already-known APIs side by side using canonical catalog fields plus capability-graph summary fields such as verified capability count, physical consequences, approval relevance and irreversibility. Use get_api for the full decision profile of one API and search_capabilities for capability-level filtering. No missing value is inferred and Unknown remains Unknown.
Alternatives in AI & Agents
Compare →SHSelf Hosted AiB
Engineering log of self-hosted AI on NVIDIA DGX Spark (GB10/SM121A). 60+ articles indexed.
BOBowmarkB
Do things on live websites: prices, availability, quotes, bookings, anything behind a form or login.
SlopItB
Instant blogs for AI agents: sign up, publish markdown posts, get a live public URL in seconds.
OVOverwingB
Guardrails for LLM output: pass / fail / review verdicts and one recommended action. Hosted or npm.
SASavvlyB
Savvly MCP: query fund data, model projections, and compare against alternative retirement products.
atomaB
Start and follow atoma builds; read their runs, traces, agent registry and skill catalogue.