# Apizie: Application APIs

> Apizie is one API key for 3723 public data APIs (143423 endpoints, 31 categories): finance and crypto, news, research, developer tools, cloud and 3,300+ global APIs, all returned as clean JSON. Includes an MCP server for Claude, ChatGPT and Cursor. Free plan: 1,000 requests/month, no credit card.

## Use it
- Base URL: https://apizie.tech
- Auth: header `x-api-key: apz_...` (also `Authorization: Bearer` or `api-key`). Free key: https://apizie.tech/register
- Call: `GET|POST /v1/{category}:{api}/{endpoint}?param=value`
- Success: `{ project, data, timestamp }`
- Error: `{ content, message, errors }` (bulk/plan errors: `{ error: { code, message } }`)
- Limits: headers `X-RateLimit-Remaining`, `X-RateLimit-Remaining-Month`, `Retry-After` on 429; 5xx are refunded
- APIs marked (your key) need the provider's own key in `x-upstream-key`

## Key pages
- [MCP server setup](https://apizie.tech/mcp): https://apizie.tech/mcp, Streamable HTTP, OAuth 2.1 or API key, 8 tools
- [Docs](https://apizie.tech/docs) · [Quickstart](https://apizie.tech/docs/quickstart) · [Errors](https://apizie.tech/docs/errors) · [Bring your own key](https://apizie.tech/docs/byok)
- [Pricing](https://apizie.tech/pricing): Free 1,000/month, Pro $9, Ultra $29, Max $99 per month (2 months free yearly)
- [OpenAPI 3.1](https://apizie.tech/openapi.json) · [Full catalog for LLMs](https://apizie.tech/llms-full.txt)
- Any catalog or docs page has a Markdown twin: append `.md` (for example /api/search-tools/wikipedia.md)

## Endpoints

### App Store (`application:app-store`)
Apple App Store apps: details, search, developer catalogues, customer reviews and top charts via Apple's public lookup and RSS feeds.
- GET /v1/application:app-store/app: App (id:string, bundleId:string, country:string)
- GET /v1/application:app-store/search: Search (query*:string, country:string, entity:string, page:integer, count:integer)
- GET /v1/application:app-store/developer: Developer (developerId*:string, country:string, entity:string, count:integer)
- GET /v1/application:app-store/reviews: Reviews (id*:string, country:string, sort:string, page:integer)
- GET /v1/application:app-store/charts: Top Charts (feed:string, country:string, genre:string, count:integer)

### Firefox Add-ons (`application:firefox-addons`)
Firefox extensions and themes from addons.mozilla.org: details, search, versions, reviews and authors.
- GET /v1/application:firefox-addons/addon: Add-on (id*:string, lang:string)
- GET /v1/application:firefox-addons/search: Search (query*:string, app:string, type:string, sort:string, lang:string, page:integer, count:integer)
- GET /v1/application:firefox-addons/versions: Versions (id*:string, lang:string, page:integer, count:integer)
- GET /v1/application:firefox-addons/reviews: Reviews (id*:string, score:integer, lang:string, page:integer, count:integer)
- GET /v1/application:firefox-addons/author: Author (developer*:string, lang:string)

### Snapcraft (`application:snapcraft`)
Snap packages from the Snap Store: metadata, publisher and channel/version map.
- GET /v1/application:snapcraft/snap: Snap (id*:string, architecture:string)
- GET /v1/application:snapcraft/search: Search (query*:string, page:integer, count:integer)

### Flathub (`application:flathub`)
Linux Flatpak apps on Flathub: AppStream metadata, curated collections, search and install stats.
- GET /v1/application:flathub/app: App (id*:string)
- GET /v1/application:flathub/collection: Collection (collection:string, page:integer, count:integer)
- GET /v1/application:flathub/stats: Install Stats (id*:string, days:integer)
- GET /v1/application:flathub/search: Search (query*:string, page:integer, count:integer)

Pricing: https://apizie.tech/pricing