---
title: "Upload a Teams chat attachment"
method: POST
path: "/internal/teams_chat/upload_attachment"
tags: ["teams_chat"]
---

# Upload a Teams chat attachment

`POST /internal/teams_chat/upload_attachment`

Resolves the verified Teams author and stores an uploaded file for that user, returning the chat attachment metadata. Requires the internal API key and a multipart file; returns 404 for an unresolved identity and 422 for an invalid or oversized attachment.

## Other responses

- `400` — Bad Request - Invalid parameters or malformed request
- `401` — Unauthorized - Invalid or missing authentication
- `403` — Forbidden - User lacks permission to access this resource
- `404` — Not Found - Resource does not exist
- `422` — Unprocessable Entity - Invalid request parameters or validation errors
- `429` — Too Many Requests - Rate limit exceeded
- `500` — Internal Server Error - Unexpected server error

## Changes

- **2026-09-23** `765448cb74e4` — 1 info
  - endpoint added

[Change history](https://skmtc.dev/rhythms/apis/rhythms-params-in-body/changes/internal/teams_chat/upload_attachment/post.md)

---

[API](https://skmtc.dev/rhythms/apis/rhythms-params-in-body.md) · [All operations](https://skmtc.dev/rhythms/apis/rhythms-params-in-body/llms.txt) · [OpenAPI document](https://skmtc.dev/rhythms/apis/rhythms-params-in-body/revisions/be444d98d5ff?raw)