---
title: "Get Project Composer Url"
method: GET
path: "/api/v1/mcp/project/{project_id}/composer-url"
tags: ["mcp_projects"]
---

# Get Project Composer Url

`GET /api/v1/mcp/project/{project_id}/composer-url`

Get the MCP Composer URL for a specific project.

On failure, this endpoint should return with a 200 status code and an error message in
the body of the response to display to the user.

## Path parameters

- `project_id` string, uuid, required

## Response `200`

Successful Response

- ComposerUrlResponse — Response model for MCP Composer connection details.
  - `error_message` string, nullable
  - `legacy_sse_url` string, nullable
  - `project_id` string, required
  - `streamable_http_url` string, nullable
  - `uses_composer` boolean, required

## Other responses

- `422` — Validation Error

## Changes

- **2026-03-12** `830c31118215` — 2 info
  - added the optional property `detail/items/ctx` to the response with the `422` status
  - added the optional property `detail/items/input` to the response with the `422` status
- **2026-03-06** `0be341779529` — 2 info
  - the endpoint scheme security `OAuth2PasswordBearerCookie` was added to the API
  - the endpoint scheme security `OAuth2PasswordBearer` was removed from the API
- **2026-02-18** `191b57fc530b` — 2 info
  - the endpoint scheme security `OAuth2PasswordBearer` was added to the API
  - the endpoint scheme security `OAuth2PasswordBearerCookie` was removed from the API
- **2026-02-10** `0be341779529` — 2 info
  - the endpoint scheme security `OAuth2PasswordBearerCookie` was added to the API
  - the endpoint scheme security `OAuth2PasswordBearer` was removed from the API
- **2025-12-23** `b0ee9ddb8d9f` — 1 breaking, 5 info
  - the response's body type changed from no type to `object` for status `200`
  - added the optional property `error_message` to the response with the `200` status
  - added the optional property `legacy_sse_url` to the response with the `200` status
  - added the optional property `streamable_http_url` to the response with the `200` status
  - …2 more

[Full history](https://skmtc.dev/langflow-ai/apis/langflow/changes/api/v1/mcp/project/:project_id/composer-url/get.md)

---

[API](https://skmtc.dev/langflow-ai/apis/langflow.md) · [All operations](https://skmtc.dev/langflow-ai/apis/langflow/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/langflow-ai/langflow/revisions/088c1fc24528/schema)