---
title: "Retrieve Message Batch results"
method: GET
path: "/v1/messages/batches/{message_batch_id}/results"
---

# Retrieve Message Batch results

`GET /v1/messages/batches/{message_batch_id}/results`

Streams the results of a Message Batch as a `.jsonl` file.

Each line in the file is a JSON object containing the result of a single request in the Message Batch. Results are not guaranteed to be in the same order as requests. Use the `custom_id` field to match results to requests.

Learn more about the Message Batches API in our [user guide](https://platform.claude.com/docs/en/build-with-claude/batch-processing)

## Path parameters

- `message_batch_id` string, required — ID of the Message Batch.

## Headers

- `anthropic-version` string — The version of the Claude API you want to use. Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning).
- `x-api-key` string — Your unique API key for authentication. This key is required in the header of all API requests, to authenticate your account and access Anthropic's services. Get your API key through the [Console](https://console.anthropic.com/settings/keys). Each key is scoped to a Workspace.

## Response `200`

Successful Response

## Other responses

- `4XX` — Error response. See our [errors documentation](https://platform.claude.com/docs/en/api/errors) for more details.

---

[API](https://skmtc.net/anthropics/apis/anthropic-api.md) · [All operations](https://skmtc.net/anthropics/apis/anthropic-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/anthropics/anthropic-api/versions/93d8fd7d6493/schema)