Post to X and Bluesky with one API request

curl -X POST https://postsail.app/api/v1/posts \
  -H "Authorization: Bearer $POSTSAIL_API_KEY" \
  -H "Idempotency-Key: clip-launch-1" \
  -H "Content-Type: application/json" \
  -d '{
    "external_id": "clip-launch-1",
    "targets": [
      {
        "account": "brand-x",
        "text": "Our new clip is out.",
        "first_comment": "Watch it here: https://example.com/clip"
      },
      {
        "account": "brand-bluesky",
        "text": "Our new clip is out. Watch it here: https://example.com/clip"
      }
    ]
  }'

const res = await fetch("https://postsail.app/api/v1/posts", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.POSTSAIL_API_KEY}`,
    "Content-Type": "application/json",
    "Idempotency-Key": "clip-launch-1",
  },
  body: JSON.stringify({
    "external_id": "clip-launch-1",
    "targets": [
      {
        "account": "brand-x",
        "text": "Our new clip is out.",
        "first_comment": "Watch it here: https://example.com/clip"
      },
      {
        "account": "brand-bluesky",
        "text": "Our new clip is out. Watch it here: https://example.com/clip"
      }
    ]
  }),
});
console.log(res.status, await res.json());

import os

import requests

res = requests.post(
    "https://postsail.app/api/v1/posts",
    headers={
        "Authorization": f"Bearer {os.environ['POSTSAIL_API_KEY']}",
        "Idempotency-Key": "clip-launch-1",
    },
    json={
        "external_id": "clip-launch-1",
        "targets": [
            {
                "account": "brand-x",
                "text": "Our new clip is out.",
                "first_comment": "Watch it here: https://example.com/clip",
            },
            {
                "account": "brand-bluesky",
                "text": "Our new clip is out. Watch it here: https://example.com/clip",
            },
        ],
    },
)
print(res.status_code, res.json())

# 1. Start the upload: you get id, upload_url, method, headers and expires_at
curl -X POST https://postsail.app/api/v1/uploads \
  -H "Authorization: Bearer $POSTSAIL_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"content_type": "video/mp4", "size_bytes": 7340032}'

# 2. Send the file to upload_url (method PUT, the Content-Type from headers)
curl -X PUT "$UPLOAD_URL" -H "Content-Type: video/mp4" --data-binary @clip.mp4

# 3. Create the post; replace UPLOAD_ID with the id from step 1
curl -X POST https://postsail.app/api/v1/posts \
  -H "Authorization: Bearer $POSTSAIL_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: clip-2026-11-20" \
  -d '{"external_id":"clip-2026-11-20","media_upload_id":"UPLOAD_ID","targets":[{"account":"brand-x","text":"New clip"},{"account":"brand-bluesky","text":"New clip"}]}'

import {readFile, stat} from "node:fs/promises";

const auth = {Authorization: `Bearer ${process.env.POSTSAIL_API_KEY}`};
const file = "clip.mp4";

// 1. Start the upload
const start = await fetch("https://postsail.app/api/v1/uploads", {
  method: "POST",
  headers: {...auth, "Content-Type": "application/json"},
  body: JSON.stringify({content_type: "video/mp4", size_bytes: (await stat(file)).size}),
}).then((r) => r.json());

// 2. Send the file with the given method and headers
const put = await fetch(start.upload_url, {method: start.method, headers: start.headers, body: await readFile(file)});
if (!put.ok) throw new Error(`upload failed: ${put.status}`);

// 3. Create the post with the upload id
const post = await fetch("https://postsail.app/api/v1/posts", {
  method: "POST",
  headers: {...auth, "Content-Type": "application/json", "Idempotency-Key": "clip-2026-11-20"},
  body: JSON.stringify({external_id: "clip-2026-11-20", media_upload_id: start.id, targets: [{"account":"brand-x","text":"New clip"},{"account":"brand-bluesky","text":"New clip"}]}),
}).then((r) => r.json());
console.log(post.id, post.status);

import os

import requests

API = "https://postsail.app/api"
auth = {"Authorization": f"Bearer {os.environ['POSTSAIL_API_KEY']}"}
path = "clip.mp4"

# 1. Start the upload
start = requests.post(f"{API}/v1/uploads", headers=auth,
                      json={"content_type": "video/mp4", "size_bytes": os.path.getsize(path)}).json()

# 2. Send the file with the given method and headers
with open(path, "rb") as f:
    requests.request(start["method"], start["upload_url"], headers=start["headers"], data=f).raise_for_status()

# 3. Create the post with the upload id
post = requests.post(f"{API}/v1/posts", headers={**auth, "Idempotency-Key": "clip-2026-11-20"}, json={
    "external_id": "clip-2026-11-20",
    "media_upload_id": start["id"],
    "targets": [{"account":"brand-x","text":"New clip"},{"account":"brand-bluesky","text":"New clip"}],
}).json()
print(post["id"], post["status"])

curl https://postsail.app/api/v1/posts/pst_1a2b3c4d5e6f7g8h9i0j \
  -H "Authorization: Bearer $POSTSAIL_API_KEY"

const res = await fetch("https://postsail.app/api/v1/posts/pst_1a2b3c4d5e6f7g8h9i0j", {
  headers: {
    Authorization: `Bearer ${process.env.POSTSAIL_API_KEY}`,
  },
});
console.log(res.status, await res.json());

import os

import requests

res = requests.get(
    "https://postsail.app/api/v1/posts/pst_1a2b3c4d5e6f7g8h9i0j",
    headers={
        "Authorization": f"Bearer {os.environ['POSTSAIL_API_KEY']}",
    },
)
print(res.status_code, res.json())