mcp server
PPN Hub — public APIs over MCP
One MCP endpoint over 69 public PPN APIs: search_apis to discover, execute_api to call. Free tier.
Description as published by the maintainer. Source
- version 1.2.1
- active
- retrieval
active — Registry entry last updated 2026-08-03. Dashed tags are derived by ZBS Index from the published description, not stated by the maintainer.
What this server can do
3 functions, named and described by the server itself. Parameter names are shown because they say more about what a function does than its name usually does.
environment_brief(lat, lon, place)- Environmental 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_*'. Required: lat, lon.
execute_api(api, body, params, operationId)- Execute a request against any of the 69 registered APIs. Use search_apis first to find the correct api name and operationId. Requires 'Authorization: Bearer ppn_live_*'. Required: api, operationId.
search_apis(tag, limit, query, domain, method, region)- Search across 450 endpoints in 69 APIs (cultural, earth, energy-calc, green-path, harmonias, hydrogen, internal, nanosnap, natura, platform, sakurahub, science, sim, social, 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. Required: query.
Last successful function declaration observed on . Source: https://mcp.ppn-hub.com/mcp. We list what the server declared; we do not call any of these functions.
Endpoint status observed on . Source: https://mcp.ppn-hub.com/mcp.
Signals
These are separate measurements of different things. They are deliberately not combined into one score, because a popularity number that mixes website traffic with saves and stars cannot be checked or acted on.
| Signal | Value | What it measures | Window | Observed | Source |
|---|---|---|---|---|---|
| Latest published version | 1.2.1 | Latest version string the maintainer published to the registry. | as of fetch | Model Context Protocol | |
| Registry record last updated | 2026-08-03 | When the registry record was last updated by its maintainer. | point in time | Model Context Protocol | |
| First listed in the MCP Registry | 2026-08-03 | Date this server was first published to the official MCP Registry. Not a usage or quality measure. | point in time | Model Context Protocol | |
| mcp tools declared | 3 tools | Number of functions the server itself declared when asked to list them. This is what the server offers an agent, not a measure of how well any of them work. | as of probe | mcp.ppn-hub.com | |
| mcp endpoint status | ok | The server listed 3 functions when asked. | as of probe | mcp.ppn-hub.com |
Where to get it
This record as data
Every field on this page, with its source and observation date, is in the catalog JSON. Fetch the whole kind at once instead of parsing this HTML.
GET /api/v1/entries/mcp_server.json