diff

A command that compares the current work handoff with an earlier saved snapshot, showing changes section by section.

In plain words
What is it for?
Use it to review progress, find completed or changed tasks, and check updates to the next action or recorded lessons.
Why use it?
It makes it easier to see what changed between work sessions without manually comparing files.

Command

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/sofumel/claude-handoff-revive/diff
Clone the repo
git clone --depth 1 https://github.com/sofumel/claude-handoff-revive
Per session 29 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 259 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. 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 $0.00029 $0.00259
Opus 5 $0.00015 $0.00130
Sonnet 5 $0.00006 $0.00052
Haiku 4.5 $0.00003 $0.00026

Measured 2d ago against content hash af7207a77eb5, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

diff 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 2d 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.

plugins/handoff-revive/commands/diff.md · 18 lines

What it actually says

Run the diff-handoff script (pass the user's timestamp $ARGUMENTS if given; otherwise it compares against the previous save automatically):

  • Linux/macOS/WSL/Git-Bash:
    bash "${CLAUDE_PLUGIN_ROOT:-.claude}/skills/handoff-revive/scripts/diff-handoff.sh" [timestamp]
    
  • Windows PowerShell:
    $r = if ($env:CLAUDE_PLUGIN_ROOT) { $env:CLAUDE_PLUGIN_ROOT } else { ".claude" }; powershell -ExecutionPolicy Bypass -File "$r/skills/handoff-revive/scripts/diff-handoff.ps1" [-Timestamp <timestamp>]
    

Then, in the user's language (read .claude/handoff/lang), present the output and add a 1–2 sentence progress summary: what moved from todo/wip to done, how next_action changed, and any new lessons_learned. + lines were added since the snapshot, - lines were removed.

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. 2d ago First seen · 18 lines · 29 tokens per session scan A af7207a77eb5

Subscribe to this mod's changes

diff is a command published in the GitHub repository sofumel/claude-handoff-revive (6 stars, last pushed 2mo ago), licensed MIT. It adds 29 tokens to every session and 259 once invoked, about $0.0001 per session on Opus 5. 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 2026-08-31.