version sunset quietly kills your automation overnight. letmepost fails loudly:

Preflight validation: character counts, media rules, and OAuth scopes are checked locally before the call, so you catch problems before they ship.

Transparent errors: every failure returns a stable code, the exact rule that broke, the raw platform response, and how to fix it.

Pinned platform versions: we track upstream deprecations and upgrade internally, so your workflow doesn't break at 2 a.m.

Idempotency keys: retries never double-post.

Apache-2.0 and self-hostable; the hosted version runs the exact same code, with flat usage-based pricing (no per-profile tax). The machine-readable errors also make it a clean primitive for AI agents that need to post and correct their own mistakes.

1d:T5a8,

letmepost is an open-source HTTP API for publishing to social media. A single POST /v1/posts reaches Bluesky, LinkedIn, X, Instagram, Facebook, Threads, Pinterest, and TikTok, instead of wiring up a separate integration, OAuth flow, and error format for each one.

The difference shows up when something breaks. Most social APIs fail silently: a post returns 200 and never appears, tokens rot after 60 days with no warning, and a platform version sunset quietly kills your automation overnight. letmepost fails loudly:

Preflight validation: character counts, media rules, and OAuth scopes are checked locally before the call, so you catch problems before they ship.

Transparent errors: every failure returns a stable code, the exact rule that broke, the raw platform response, and how to fix it.

Pinned platform versions: we track upstream deprecations and upgrade internally, so your workflow doesn't break at 2 a.m.

letmepost

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