---
title: "Upload evidence for an offboarding checklist item"
method: POST
path: "/v1/offboarding-checklist/member/{memberId}/item/{templateItemId}/evidence"
tags: ["Offboarding Checklist"]
---

# Upload evidence for an offboarding checklist item

`POST /v1/offboarding-checklist/member/{memberId}/item/{templateItemId}/evidence`

## Request

- Base URL: `https://api.trycomp.ai`
- URL: `https://api.trycomp.ai/v1/offboarding-checklist/member/{memberId}/item/{templateItemId}/evidence`
- Auth: API key in header `X-API-Key`

Attaches a supporting evidence file to a member's completed offboarding checklist item, documenting that the offboarding step was actually carried out.

## Path parameters

- `memberId` string, required
- `templateItemId` string, required

## Request body

- UploadAttachmentDto
  - `fileName` string, required: Name of the file
  - `fileType` string, required: MIME type of the file
  - `fileData` string: Base64-encoded file contents. For the web UI / direct callers. AI/MCP clients should instead upload via /v1/uploads/presign (purpose=attachment) and pass `s3Key` — base64 through an LLM is impractically slow and times out. Provide exactly one of fileData or s3Key.
  - `s3Key` string: Key of a file already uploaded via /v1/uploads/presign (purpose=attachment). The server fetches the bytes from storage — no base64 needed. Provide exactly one of fileData or s3Key.
  - `description` string: Description of the attachment
  - `userId` string: User ID of the user uploading the attachment (required for API key auth, ignored for JWT auth)

## Response `201`

## Changes

- **2026-06-05** `33c685841b7a`: 2 info
  - added the new optional request property `s3Key`
  - the request property `fileData` became optional
- **2026-06-05** `7ca7c363a732`: 1 breaking, 1 warning
  - the request property `fileData` became required
  - removed the request property `s3Key`
- **2026-06-05** `d0f58f24175b`: 2 info
  - added the new optional request property `s3Key`
  - the request property `fileData` became optional
- **2026-06-04** `d7d0199d846f`: 1 info
  - the endpoint scheme security `oauth2` was removed from the API
- **2026-05-29** `5382c53ab431`: 1 info
  - the endpoint scheme security `oauth2` was added to the API

[Operation history](https://skmtc.dev/trycompai/apis/comp-ai-api/changes/v1/offboarding-checklist/member/:memberId/item/:templateItemId/evidence/post.md)

---

[API](https://skmtc.dev/trycompai/apis/comp-ai-api.md) - [All operations](https://skmtc.dev/trycompai/apis/comp-ai-api/llms.txt) - [OpenAPI document](https://skmtc.dev/trycompai/apis/comp-ai-api/revisions/194adff5164c?raw)