Postproxy
Actively usedUnified social media API — publish to Instagram, LinkedIn, Twitter/X, TikTok, Threads, Bluesky, and more with one request. Handles OAuth, token refresh, retries, format conversion, and per-platform delivery status. Built for agents, SaaS, and automation pipelines with MCP, n8n, and SDK support.
About Postproxy
Postproxy is one API for social publishing. Send a single request and it delivers to Instagram, LinkedIn, Twitter/X, TikTok, Threads, Bluesky and more, handling the OAuth dance, token refresh, retries, format conversion and per-platform delivery status behind it. It is built for agents, SaaS products and automation pipelines rather than a person clicking publish, with MCP, n8n and SDK support.
This is the production listing: in active use here, not something we are evaluating. It is what our publishing automation posts through. What keeps it is not the single request, it is the maintenance we no longer do — every network has its own media constraints, token expiry behaviour and way of failing quietly.
Ayrshare is the closest direct comparison, worth evaluating side by side. Postiz is the open-source option if you would rather self-host. Buffer and Hootsuite solve a different problem — a person scheduling in a UI, not a program posting on a schedule. Going direct to a platform's own API is right if you only publish to one network, because the abstraction earns nothing there. A unified API starts paying at around three networks, or the moment an agent rather than a human is doing the posting.
Try Postproxy yourself.
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Postproxy alternatives
Other Social Media & Analytics tools we use alongside Postproxy.
Appflyer
Mobile attribution and marketing analytics platform for tracking user acquisition, engagement, and campaign performance across channels.
View toolBuffer AI Assistant
Social media AI sidekick — brainstorm post ideas, repurpose content across channels, tailor copy per platform, and adjust tone or length in one click.
View tool
Frequently asked questions
- What is Postproxy?
- Unified social media API — publish to Instagram, LinkedIn, Twitter/X, TikTok, Threads, Bluesky, and more with one request. Handles OAuth, token refresh, retries, format conversion, and per-platform delivery status. Built for agents, SaaS, and automation pipelines with MCP, n8n, and SDK support. Postproxy is one API for social publishing. Send a single request and it delivers to Instagram, LinkedIn, Twitter/X, TikTok, Threads, Bluesky and more, handling the OAuth dance, token refresh, retries, format conversion and per-platform delivery status behind it. It is built for agents, SaaS products and automation pipelines rather than a person clicking publish, with MCP, n8n and SDK support.
- What category does Postproxy fall into?
- Postproxy is a Social Media & Analytics tool. Replace Works tracks it in the Tool Stack, our public catalogue of the AI tools we evaluate and ship with.
- What are the best alternatives to Postproxy?
- The closest alternatives we track in the same Social Media & Analytics category are Appflyer and Buffer AI Assistant. All of them are listed in the Replace Works Tool Stack with our notes on where each one fits.
- Does Replace Works use Postproxy?
- Yes. Postproxy is in active rotation at the studio and we use it on client work.