social media auto poster api
Social media auto poster API
Postwire is a social media auto poster API that lets a developer or agent send one content package to many platforms with a single authenticated request.
Endpoints
POST /api/v1/packages accepts a multipart upload: package.json (targets, product, schedule hints), long.md, short.md and up to eight images (png, jpeg or webp, 8 MB each, 25 MB total). The response lists the derived variants and their states.
Your agent can then list variants, read a variant's text, approve or reject it, and pull post URLs and metrics. GET /api/v1 returns the full endpoint list as JSON, and the AI access page shows the same list next to a generated skill for Claude Code, Cursor or Codex.
Packages are idempotent: re-sending the same package id with the same content returns the original result instead of creating duplicate posts.
Limits and access
Requests authenticate with a Bearer key (prefix pwk_). Each key is limited to 60 requests per minute, an account can hold up to 3 keys, and JSON bodies are capped at 64 KB. Keys can be rotated or revoked at any time.
API access is available today during the internal-use phase. In the planned paid plans it is part of Maker; billing is not open yet.
Frequently asked
- Is there a social media auto poster API?
- Yes. Postwire's API takes one content package and derives a post per platform, which the extension fills for you to publish; Ayrshare is another well-known option built as a pure developer API.
- What are the rate limits?
- 60 requests per minute per key, up to 3 active keys per account, 64 KB per JSON body and 25 MB per package upload.
- Which plan includes API access?
- Everyone can use the API during the internal-use phase. In the planned pricing, API and MCP access belong to the Maker plan ($49/month, not open yet).
Related
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