> ## Documentation Index
> Fetch the complete documentation index at: https://docs.partio.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Checkpoint Detail

> Deep dive into a checkpoint's sessions, plan, and file changes

# Checkpoint Detail

The checkpoint detail page (`/:owner/:repo/checkpoints/:id`) is where you explore the full context behind a code change — the conversation, the plan, and the diff.

<img src="https://mintcdn.com/partio/D7OhIgZe65AaoSxp/images/app/checkpoint-detail.gif?s=d86f5c6f368b49f6da295071e82537b7" alt="Exploring checkpoint sessions, plan, and files" width="1024" height="640" data-path="images/app/checkpoint-detail.gif" />

## Header

The header shows key metadata at a glance:

| Field             | Description                                                       |
| ----------------- | ----------------------------------------------------------------- |
| **Title**         | First user message from the session (truncated to 100 characters) |
| **Checkpoint ID** | First 8 characters of the checkpoint hash                         |
| **Commit**        | First 8 characters of the associated commit hash                  |
| **Timestamp**     | Relative time since the checkpoint was created                    |
| **Branch**        | The Git branch this checkpoint was captured on                    |
| **Tokens**        | Total tokens consumed during the session (if available)           |
| **Agent**         | Agent name and AI authorship percentage                           |

An **Actions** button in the top-right provides:

* Copy checkpoint ID to clipboard
* Download plan (if available)
* Share/export options based on the active tab

## Tabs

### Sessions

The transcript viewer displays the full conversation between the human and the AI agent:

* **Message bubbles** — Each message shows the role (human or assistant), content, and timestamp
* **Token counts** — Per-message token usage when available
* **Tool calls** — Tool names shown as pills/badges on assistant messages
* **Avatars** — User image and agent icon displayed alongside messages

This is the core "why" that partio captures — the reasoning and back-and-forth that produced the code change.

### Plan

If the agent generated a plan during the session, it's rendered as formatted markdown. This tab only appears when plan data exists (`plan_slug` is set on the checkpoint).

The plan typically contains the agent's high-level strategy, step-by-step breakdown, and reasoning for the approach taken.

### Files

A unified diff viewer showing all file changes in this checkpoint:

* File-by-file breakdown with added/removed/modified indicators
* Syntax-highlighted diffs with line numbers
* File count shown in the tab badge