handoff

handoff is a skill for Claude Code from TheWinci/mimirs. It costs 61 tokens per session (308 once invoked), scanned A, original, Apache-2.0.

A handoff guide for recording what happened during a coding session so another agent can continue the work. It covers changed files, risks, decisions and the next step.

In plain words
What is it for?
Use it when ending a session, changing tasks or passing work to another agent. It helps create a concise checkpoint tied to the relevant files.
Why use it?
It prevents the next session from having to rediscover unfinished work, important constraints or why a particular approach was chosen.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the mimirs plugin — 11 skills, 3 hooks shipped together

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 skills/thewinci/mimirs/handoff
Any agent
npx skills add TheWinci/mimirs --skill handoff
Clone the repo
git clone --depth 1 https://github.com/TheWinci/mimirs

Made for: Claude Code.

Or install mimirs, the plugin that ships this one along with the rest of its 11 skills, 3 hooks.

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.

agentmods badge for handoff

README.md
[![agentmods](https://agentmods.dev/badge/skills/thewinci/mimirs/handoff.svg)](https://agentmods.dev/skills/thewinci/mimirs/handoff)
Your own site
<a href="https://agentmods.dev/skills/thewinci/mimirs/handoff"><img src="https://agentmods.dev/badge/skills/thewinci/mimirs/handoff.svg" alt="Measured on agentmods" height="20"></a>
Per session 61 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 308 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 5.1 $0.00061 $0.00308
Opus 5 $0.00030 $0.00154
Sonnet 5 $0.00012 $0.00062
Haiku 4.5 $0.00006 $0.00031

Measured 6d ago against content hash fdfdce754c06, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

handoff 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 6d 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.

skills/handoff/SKILL.md · 15 lines

What it actually says

Handoff

Goal: leave the project state recorded so the next session starts from catch-up, not from scratch. The end-of-session counterpart to catch-up.

  1. Snapshot what changedgit_context for the modified/uncommitted files and recent commits, so the handoff names the exact files touched this session.
  2. Record caveatsannotate any fragile spot, constraint, race, or workaround you discovered or introduced this session, on the file it lives in; get_annotations on the touched files to confirm earlier notes still hold (delete_annotation ones a fix made stale).
  3. Record the decision & next stepcreate_checkpoint (type handoff) with what was done, which files changed, why, and the concrete next action. Keep the summary tight (it has a length cap). If the session was a dead end or a direction change, say so and why.

Finish: a short handoff note — done / in flight / next step / open caveats — each with a file:line or checkpoint reference, so a fresh session can resume without re-deriving context.

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. 6d ago First seen · 15 lines · 61 tokens per session scan A fdfdce754c06

Subscribe to this mod's changes

handoff is a skill published in the GitHub repository TheWinci/mimirs (29 stars, last pushed 21d ago), licensed Apache-2.0. It adds 61 tokens to every session and 308 once invoked, about $0.0003 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 2026-08-30.

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