Errors

{
    "error": {
        "type": "invalid_request_error",
        "code": "validation_failed",
        "message": "content: Too big: expected string to have <=63206 characters",
        "param": "content",
        "details": [
            { "param": "content", "message": "content: Too big: expected string to have <=63206 characters" }
        ],
        "docUrl": "https://feedhorizon.com/docs/api/errors#invalid_request_error",
        "requestId": "req_m2x81a0kfd3h9s"
    }
}

{
  "code": "platform_rejected",
  "category": "rejected",
  "source": "user",
  "message": "LinkedIn publish failed (422): Content is a duplicate of urn:li:share:7654…"
}

const res = await fetch('https://feedhorizon.com/api/v1/posts', {
    method: 'POST',
    headers: {
        'Authorization': 'Bearer fh_YOUR_API_KEY',
        'Content-Type': 'application/json',
        'Idempotency-Key': crypto.randomUUID(),
    },
    body: JSON.stringify({ profileId: 'YOUR_PROFILE_ID', platforms: ['linkedin'], content: 'Hello!' }),
});

if (!res.ok) {
    const { error } = await res.json();
    if (error.code === 'validation_failed') {
        for (const d of error.details) console.error(`${d.param}: ${d.message}`);
    } else {
        console.error(`${error.type}/${error.code}: ${error.message} (${error.requestId})`);
    }
}