firefly2: Skill for Claude Code

.claude/skills/handoff/SKILL.md

handoff is a skill for Claude Code from candykingdom/firefly2. It costs 85 tokens per session (914 once invoked), scanned A, original, no licence file.

A documented project handoff for another coding-agent session. It records completed work, remaining tasks, blockers, and useful findings in the project specification or repository documentation.

In plain words
What is it for?
Use it before clearing context or changing agents. It helps a new Claude Code or Codex session continue work without relying on the previous conversation.
Why use it?
It prevents important context from being lost when a session ends or you switch between coding agents. The handoff is checked and committed so the next session can start from the saved information.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

This is candykingdom/firefly2's own configuration. It tells Claude Code how to work on firefly2 itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything firefly2 configures →

Reuse

Borrowing it

Nothing to install: this file belongs to candykingdom/firefly2. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/candykingdom/firefly2/master/.claude/skills/handoff/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/candykingdom/firefly2

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.

agentmods badge for handoff

README.md
[![agentmods](https://agentmods.dev/badge/skills/candykingdom/firefly2/handoff/github.svg)](https://agentmods.dev/skills/candykingdom/firefly2/handoff)
Your own site
<a href="https://agentmods.dev/skills/candykingdom/firefly2/handoff"><img src="https://agentmods.dev/badge/skills/candykingdom/firefly2/handoff/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.

agentmods 80×15 button for handoff

Your own site · 80×15
<a href="https://agentmods.dev/skills/candykingdom/firefly2/handoff"><img src="https://agentmods.dev/badge/skills/candykingdom/firefly2/handoff.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 85 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 914 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 unknown 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 $0.00085 $0.00914
Opus 5.5 $0.00034 $0.00366
Sonnet 5.5 $0.00017 $0.00183
Haiku 4.5 $0.00009 $0.00091

Measured 2mo ago against content hash 34321111be5a, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, 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 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.

.claude/skills/handoff/SKILL.md · 76 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 2mo ago First seen · 76 lines · 85 tokens per session scan A 34321111be5a

Subscribe to this mod's changes

handoff is a skill published in the GitHub repository candykingdom/firefly2 (5 stars, last pushed 3mo ago), with no licence file. It adds 85 tokens to every session and 914 once invoked, about $0.0003 per session on Opus 5.5. 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.

Related

handoff compared with skills from other repositories

handoff next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
handoffcandykingdom/firefly2Skill53mo agononeA85Claude Code
imagegenopenai/codexSkill133kyesterdayApache-2.0A113Codex
playwright-climicrosoft/playwrightSkill99kyesterdayApache-2.0A19Claude Code
local-ai-agentsmicrosoft/ai-agents-for-beginnersSkill79k4d agoMITA200Claude Code, Codex
systematic-debuggingobra/superpowersSkill313k3d agoMITA21Claude Code
next-cache-components-adoptionvercel/next.jsSkill143kyesterdayMITA95Claude Code
next-partial-prefetching-adoptionvercel/next.jsSkill143kyesterdayMITA103Claude Code