ox-session-stop

A command that stops recording the current coding-agent session and saves it to a project ledger, which is a record of past sessions. It may also ask the agent to create and submit a summary.

In plain words
What is it for?
Use it when ending an agent session that should be recorded, with any requested summary passed back through the command.
Why use it?
It provides a defined way to finish a session and preserve its record without leaving summary data in shared temporary files.

Command for Claude Code

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add commands/sageox/ox/ox-session-stop
Clone the repo
git clone --depth 1 https://github.com/sageox/ox

Made for: Claude Code.

Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 224 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 1 finding. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00000 $0.00224
Opus 5 $0.00000 $0.00112
Sonnet 5 $0.00000 $0.00045
Haiku 4.5 $0.00000 $0.00022

Measured 3d ago against content hash e47d899ed739, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade C, and why

ox-session-stop scanned grade C with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Hidden instructionshighPrompt injection

Directives inside HTML comments, invisible characters or bidirectional overrides are read by the model and not by the person reviewing the file.

<!-- Keep this file thin. Behavioral guidance (use-when, common-issues, errors) belongs in the ox CLI JSON output (guidance field), not here. Skills are agent-specific wrappers; ox serves all agents (Codex, etc.). Except
.claude/commands/ox-session-stop.md · 22 lines

What it actually says

Stop recording and save this agent session to the project ledger.

Post-Command

Follow the guidance field in the JSON output. If summary_prompt is present, generate the summary as it instructs and pipe it back via stdin:

echo "$summary_json" | ox session push-summary --file - --session-dir <session-dir>

Pipe via stdin — never write the JSON to /tmp/ or any shared path (concurrent agents race on shared filenames and macOS tmpfs GC can reap them mid-run).

$ox agent session stop

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 3d ago First seen · 22 lines · 0 tokens per session scan C e47d899ed739

Subscribe to this mod's changes

ox-session-stop is a command published in the GitHub repository sageox/ox (50 stars, last pushed 4d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 224 tokens. A static security scan graded it C with 1 finding (hidden instructions). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.