---
title: "POST /experimental/launch-runs/{id}/events"
method: POST
path: "/experimental/launch-runs/{id}/events"
tags: ["Launch Runs"]
---

# POST /experimental/launch-runs/{id}/events

`POST /experimental/launch-runs/{id}/events`

## Request

- Base URL: `https://api.tessl.io`
- URL: `https://api.tessl.io/experimental/launch-runs/{id}/events`
- Auth: none declared

Accepts bounded, ordered event batches from the active run-scoped Launch sandbox. Temporary ingestion failures are returned with an unavailable status.

## Path parameters

- `id` string, uuid, required

## Headers

- `Authorization` string

## Request body

- object
  - `attemptId` string, required
  - `lines` object[], required
    - `lineNumber` integer, required
    - `event` object, required

## Response `202`

Default Response

- object
  - `data` union, required
    - object
      - `status` 'accepted', required
      - `acceptedThrough` integer, required
      - `idempotent` boolean, required
    - object
      - `status` 'unavailable', required

## Other responses

- `400`: Bad Request
- `401`: Unauthorized
- `403`: Forbidden
- `404`: Not Found
- `409`: Conflict
- `413`: Default Response
- `500`: Internal Server Error

## Changes

- **2026-10-07** `9a8fc7f1fea0`: 1 info
  - endpoint added

[Operation history](https://skmtc.dev/tessl/apis/tessl-api/changes/experimental/launch-runs/:id/events/post.md)

---

[API](https://skmtc.dev/tessl/apis/tessl-api.md) · [All operations](https://skmtc.dev/tessl/apis/tessl-api/llms.txt) · [OpenAPI document](https://skmtc.dev/tessl/apis/tessl-api/revisions/7386f1e6295b?raw)