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.
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.
Quickstart
From zero to your first published post: authenticate, connect a profile, and send one payload to many platforms.
API reference
Posts, queues, profiles, comments, direct messages, reviews, webhooks, and calendar — every endpoint with parameters and examples.
SDKs
Official SDKs for Node, Python, Ruby, and other popular languages, plus plain REST if you prefer raw HTTP.
Sandbox environment
Sandbox mode is included on all plans: develop and test without real social accounts and without burning platform quota.
Webhooks
Subscribe to post lifecycle events and get per-platform outcomes pushed to your endpoint instead of polling.
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.
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" -
/openapi.jsonOpenAPI specification Machine-readable description of the full API surface (OpenAPI 3.1). -
/llms.txtllms.txt LLM-friendly overview of the product, concepts, and supported platforms. -
/.well-known/mcp/server-card.jsonMCP server Server card for the Postproxy MCP server at mcp.postproxy.dev — publish and manage social from any MCP client. -
/.well-known/api-catalogAPI catalog RFC 9727 linkset pointing at every API resource page. -
/sitemap.xmlSitemap Every canonical URL on this site. -
https://www.npmjs.com/package/postproxy-mcpCLI (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.
Serious about where your data lives.
Postproxy runs on European infrastructure, handles credentials the way you'd want your own handled, and is built to meet the highest compliance and security standards.
Security at core.
Your data is protected by enterprise-grade encryption, secure APIs, and strict access controls designed to keep everything safe.
Europe hosted.
All data is stored and processed on European servers, ensuring sovereignty, reliability, and compliance with local regulations.
Compliant by design.
GDPR-compliant today and currently obtaining our SOC 2 Type II certification. We build Postproxy to meet the highest standards for privacy, security, and transparency.
TRUSTED BY TEAMS AT
Ready to get started?
Start with our free plan and scale as your needs grow. No credit card required.
