---
title: "Ask which sessions to upload [write]"
method: POST
path: "/trace-library/check"
tags: ["trace-library"]
---

# Ask which sessions to upload \[write\]

`POST /trace-library/check`

## Request

- Base URL: `https://api.agentsky.dev/v1`
- URL: `https://api.agentsky.dev/v1/trace-library/check`
- Auth: HTTP bearer

For each named session: upload (new or changed), unchanged (same sha256 already stored) or owned (another member uploaded it). Workspace keys are refused: uploads and reads belong to a person. Returns 503 not_migrated before the tables exist.

## Request body

- object
  - `sessions` object[], required
    - `harness` string, required
    - `session_id` string, required
    - `sha256` string, required

## Response `200`

OK

- object
  - `sessions` object[]
    - `harness` string
    - `session_id` string
    - `status` 'upload' | 'unchanged' | 'owned'

## Other responses

- `default`: Error — { error: { code, message } }

## Changes

- **2026-11-02** `e5e8f0229a99`: 1 info
  - endpoint added

[Operation history](https://skmtc.dev/agentsky/apis/agentsky-developer-api/changes/trace-library/check/post.md)

---

[API](https://skmtc.dev/agentsky/apis/agentsky-developer-api.md) - [All operations](https://skmtc.dev/agentsky/apis/agentsky-developer-api/llms.txt) - [OpenAPI document](https://skmtc.dev/agentsky/apis/agentsky-developer-api/revisions/8280a065ef6a?raw)