What is session-update?

A development-session command that appends a timestamped update to the active session file, including Git changes, task progress, issues, and solutions.

Recording manual updates or recent activity during an active coding session, including branch, commit, file, and todo information.

It keeps a running record of what changed and what remains, so development work is easier to resume or review.

session-update — Command for Claude Code by iannuttall/claude-sessions

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.

Clone the repo

git clone --depth 1 https://github.com/iannuttall/claude-sessions

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/commands/iannuttall/claude-sessions/session-update/github.svg)](https://agentmods.dev/commands/iannuttall/claude-sessions/session-update)

Your own site

<a href="https://agentmods.dev/commands/iannuttall/claude-sessions/session-update"><img src="https://agentmods.dev/badge/commands/iannuttall/claude-sessions/session-update/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/commands/iannuttall/claude-sessions/session-update"><img src="https://agentmods.dev/badge/commands/iannuttall/claude-sessions/session-update.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

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 288 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

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.

Model	Per session	Once invoked
Fable 5.1	$0.00000	$0.00288
Opus 5.5	$0.00000	$0.00115
Sonnet 5.5	$0.00000	$0.00058
Haiku 4.5	$0.00000	$0.00029

Measured 2mo ago against content hash a3cbde9e618b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

session-update scanned grade A with 0 findings 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 2mo 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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

commands/session-update.md · 37 lines

What it actually says

Update the current development session by:

Check if .claude/sessions/.current-session exists to find the active session
If no active session, inform user to start one with /project:session-start
If session exists, append to the session file with:
- Current timestamp
- The update: $ARGUMENTS (or if no arguments, summarize recent activities)
- Git status summary:
  - Files added/modified/deleted (from git status --porcelain)
  - Current branch and last commit
- Todo list status:
  - Number of completed/in-progress/pending tasks
  - List any newly completed tasks
- Any issues encountered
- Solutions implemented
- Code changes made

Keep updates concise but comprehensive for future reference.

Example format:

### Update - 2025-06-16 12:15 PM

**Summary**: Implemented user authentication

**Git Changes**:
- Modified: app/middleware.ts, lib/auth.ts
- Added: app/login/page.tsx
- Current branch: main (commit: abc123)

**Todo Progress**: 3 completed, 1 in progress, 2 pending
- ✓ Completed: Set up auth middleware
- ✓ Completed: Create login page
- ✓ Completed: Add logout functionality

**Details**: [user's update or automatic summary]

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.

2mo ago First seen · 37 lines · 0 tokens per session scan A a3cbde9e618b

Subscribe to this mod's changes

session-update is a command published in the GitHub repository iannuttall/claude-sessions (1,205 stars, last pushed 1y ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 288 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

session-update next to 6 commands from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
session-updateiannuttall/claude-sessions	Command	1.2k	1y ago	MIT	A	0	Claude Code
checklistgithub/spec-kit	Command	148k	yesterday	MIT	A	13	Claude Code
clarifygithub/spec-kit	Command	148k	yesterday	MIT	A	27	Claude Code
specifygithub/spec-kit	Command	148k	yesterday	MIT	A	13	Claude Code
analyzegithub/spec-kit	Command	148k	yesterday	MIT	A	26	Claude Code
convergegithub/spec-kit	Command	148k	yesterday	MIT	A	35	Claude Code
implementgithub/spec-kit	Command	148k	yesterday	MIT	A	14	Claude Code