Developer portal

Build on the Postproxy Social Media API: one integration for publishing, comments, DMs, and reviews across 11 platforms. Everything you need is on this page — keys, docs, SDKs, sandbox, and machine-readable specs.

Get your API key Quickstart
Start building

Everything a first integration needs

Get an API key

Start free with 10 posts — no credit card required. Generate a key self-serve in the app under Settings → API Keys; full-access and profile-group-scoped keys are supported.

Create account →

Quickstart

From zero to your first published post: authenticate, connect a profile, and send one payload to many platforms.

Read the quickstart →

API reference

Posts, queues, profiles, comments, direct messages, reviews, webhooks, and calendar — every endpoint with parameters and examples.

Browse the reference →

SDKs

Official SDKs for Node, Python, Ruby, and other popular languages, plus plain REST if you prefer raw HTTP.

Pick an SDK →

Sandbox environment

Sandbox mode is included on all plans: develop and test without real social accounts and without burning platform quota.

Start in sandbox →

Webhooks

Subscribe to post lifecycle events and get per-platform outcomes pushed to your endpoint instead of polling.

Set up webhooks →
For agents and tooling

Machine-readable resources

Postproxy is built to be consumed by AI agents as well as humans. These endpoints describe the site and API in formats tools can parse directly. Docs pages also serve markdown when requested with Accept: text/markdown.

  • /openapi.json OpenAPI specification

    Machine-readable description of the full API surface (OpenAPI 3.1).

  • /llms.txt llms.txt

    LLM-friendly overview of the product, concepts, and supported platforms.

  • /.well-known/mcp/server-card.json MCP server

    Server card for the Postproxy MCP server at mcp.postproxy.dev — publish and manage social from any MCP client.

  • /.well-known/api-catalog API catalog

    RFC 9727 linkset pointing at every API resource page.

  • /sitemap.xml Sitemap

    Every canonical URL on this site.

  • https://www.npmjs.com/package/postproxy-mcp CLI (npm)

    postproxy-mcp runs the MCP server as a local stdio process; postproxy-mcp-setup is an interactive wizard that configures Claude Code or Claude Desktop.

Try it without an account

The content calendar endpoint needs no API key — one request to see real response shapes: 

curl "https://api.postproxy.dev/api/calendar?country=US"

Ready to get started?

Start with our free plan and scale as your needs grow. No credit card required.

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