PPN Hub — public APIs over MCP

One MCP endpoint over 69 public PPN APIs: searchapis to discover, executeapi to call.

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What it can do

    What data it sees

    Do you need an account

    No: the server works without sign-in

    One MCP endpoint over 69 public PPN APIs: search_apis to discover, execute_api to call. Free tier.

    Server tool list (3)

    Raw names from tools/list. Only developers need these.

    search_apisSearch across 484 endpoints in 59 APIs (cultural, earth, energy-calc, green-path, harmonias, hydrogen, internal, nanobase, nanosnap, natura, platform, sakurahub, science, sim, space, stocks). Returns matching endpoints with method, path, summary, parameters, and a ready-to-run example. Use this to discover available API endpoints before calling execute_api. Results carry a "coverage" field (e.g. ["JP"]) for region-limited APIs; use the "region" filter to narrow.
    execute_apiExecute a request against any of the 59 registered APIs. Use search_apis first to find the correct api name and operationId. Requires 'Authorization: Bearer ppn_live_*'.
    environment_briefEnvironmental brief for one location: fans out to every public geo-aware API (weather, terrain, environment, …) and returns a merged JSON. Partial results come back with an errors[] list. Requires 'Authorization: Bearer ppn_live_*'.
    PPN Hub — public APIs over MCP: connect to Claude, ChatGPT, Cursor · Connectors.fun