PostLake: publish a post now

Publishes one caption to as many connected accounts as you like, in one call. Each platform is attempted independently and the response reports per-platform state and url.

Auth

Authorization: Bearer $POSTLAKE_API_KEY

Base URL https://api.postlake.dev.

Choosing where to post

Two ways to say which accounts a post goes to: pick whichever is simpler:

• By profile (simplest): a profile is a named group of connected accounts (a brand, a client, "me"). Pass "profile": "my-brand" and it posts to every account in it. Add "platforms": ["bluesky","linkedin"] to narrow it to certain networks. No id lookup needed.
• By account id (precise): pass "accounts": ["acc_…"] for exact accounts. Get the ids from the postlake-accounts skill (GET /v1/social-accounts).

Provide profile, accounts, or both. At least one is required.

Publish

# Simplest: post to a whole profile.
curl -X POST https://api.postlake.dev/v1/posts \
 -H "Authorization: Bearer $POSTLAKE_API_KEY" \
 -H "Content-Type: application/json" \
 -H "Idempotency-Key: $(uuidgen)" \
 -d '{
  "text": "Shipping something new today 🚀",
  "profile": "my-brand"
 }'

To hit specific networks in that profile add "platforms": ["bluesky"]; to target exact accounts use "accounts": ["acc_84a4…","acc_e553…"] instead.

Response (normalised: reason over targets):

{
 "id": "post_…",
 "state": "published",
 "targets": [
  { "platform": "bluesky", "state": "published", "url": "https://bsky.app/profile/…/post/…" },
  { "platform": "linkedin", "state": "published", "url": "https://www.linkedin.com/feed/update/…" }
 ]
}

state per target is one of published, processing (async platforms like TikTok/YouTube: poll GET /v1/posts/{id} until final), failed (see target.error), or scheduled.

Options

• Attach media: upload first with the postlake-media skill, then pass the ids: "media": ["med_…"] (with optional "mediaAlt": ["alt text"]).
• Per-platform captions: "textOverrides": { "x": "shorter for X", "linkedin": "…" }.
• Platform-specific settings: "platformOptions": { "pinterest": { "boardId": "…" }, "youtube": { "title": "…", "privacyStatus": "private" } }.

Rules to respect

• Idempotency: always send a unique Idempotency-Key header so a retry replays the same result instead of double-posting.
• X: needs a paid plan (X is the only network that charges). On a free plan an X target returns error.type: "entitlement_exceeded": other platforms still go out. Don't treat that as a total failure.
• Media-required platforms: Instagram, TikTok, YouTube, Pinterest need media. a text-only post to them fails with invalid_input.
• A failed target never sinks the others; report which went out and which didn't.