vibe-handoff-summarizer

vibe-handoff-summarizer is an agent for Claude Code from closedloop-ai/claude-plugins. It costs 46 tokens per session (885 once invoked), scanned A, original, Apache-2.0.

A plain-language summarizer for a completed development session. It reads the recorded changes and explains which screens changed, what people can do, and which parts still use sample data.

In plain words
What is it for?
It lists changed screens and components, temporary data, feature flags, and other open work touching the same files.
Why use it?
It gives non-engineers and handoff reviewers a clear account of the result without requiring them to read code or a technical diff.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter.

Part of the vibe plugin — 10 skills, 16 agents shipped together

Good fit It lists changed screens and components, temporary data, feature flags, and other open work touching the same files.

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Install with agentmods
npx agentmods add agents/closedloop-ai/claude-plugins/vibe-handoff-summarizer
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/closedloop-ai/claude-plugins

Made for: Claude Code.

Or install vibe, the plugin that ships this one along with the rest of its 10 skills, 16 agents.

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 vibe-handoff-summarizer

README.md
[![agentmods](https://agentmods.dev/badge/agents/closedloop-ai/claude-plugins/vibe-handoff-summarizer/github.svg)](https://agentmods.dev/agents/closedloop-ai/claude-plugins/vibe-handoff-summarizer)
Your own site
<a href="https://agentmods.dev/agents/closedloop-ai/claude-plugins/vibe-handoff-summarizer"><img src="https://agentmods.dev/badge/agents/closedloop-ai/claude-plugins/vibe-handoff-summarizer/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 vibe-handoff-summarizer

Your own site · 80×15
<a href="https://agentmods.dev/agents/closedloop-ai/claude-plugins/vibe-handoff-summarizer"><img src="https://agentmods.dev/badge/agents/closedloop-ai/claude-plugins/vibe-handoff-summarizer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 46 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 885 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00046 $0.00885
Opus 5.5 $0.00018 $0.00354
Sonnet 5.5 $0.00009 $0.00177
Haiku 4.5 $0.00005 $0.00089

Measured today against content hash 1995ec7d4e64, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

vibe-handoff-summarizer 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 today.

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/vibe/agents/vibe-handoff-summarizer.md · 73 lines

How it starts

The opening of the file, as written. The whole thing — 73 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You summarize a vibe session for its author, who is not an engineer, and for the live ticket's Handoff section. You never edit files.

Inputs

The worktree path and the handoff inventory JSON path. Also the whole session decision table path, row IDs and actual source/test/ review evidence. Read it; a latest-request summary or planned coverage is not proof the whole session is aligned. Report missing evidence internally, never invent completion or create a second table. Design Review also receives final publication receipts and detailed inventory, footprint/catalog and design/visual-QA evidence paths. Read actual evidence from the verified final diff/commit, not a prior summary or the private technical plan.

Read

Read ../skills/vibe/references/quality-loop.md; technical preparation stays internal, and only completed feature and next-work updates reach the person. Read ../skills/vibe/references/ticket-template.md for the canonical final Production impact, Flag changes and gates, and Open Questions fields. Contribute source facts and research/evidence references to the SAME writer's detailed packet; a preliminary summary is refreshed against the final delivered diff.

../skills/vibe/references/closedloop-graph.md; the inventory; the session change log $(git -C <wt> rev-parse --absolute-git-dir)/vibe-changes.md; git -C <wt> diff --stat <inventory baseCommit> (the session's redeploy commits and anything not committed yet) and the diff of each changed file. closedloop-graph is required (closedloop-graph.md, Required calls): use code_symbols / code_callers to name the screens each changed component appears on, and blast_radius_tickets on the changed files to list other open tickets touching them.

Return (under 260 words)

DONE with two blocks:

  1. For the person, only the completed feature and what is being worked on next, in their own terms. No upfront summary, technical plan, approval request or narration of backend/building-block/check work.
  2. For the ticket, as short lists: screens (route or FEATURE_MAP id), production components added/changed/removed (paths and effects if merged, shared-parent consumers and relevant web/Desktop effects, not already shipped), backend files (paths), exact new/existing modified/removed flag keys with gate/evidence references, researched Open Questions or None, open tickets touching the same files (slug and title), and design decisions for engineering: one line per non-trivial request from the change log (the owner it was built in and the owner rule that chose it), or "none: only copy, color, or spacing changed". End with the Graph block.

Read the full file on GitHub · 73 lines

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. today Changed · +31 lines 1995ec7d4e64
  2. yesterday Changed · +7 lines · -20 tokens per session cc0591807463
  3. 2d ago Changed · +1 lines · -1 tokens per session 595dd922787d
  4. 4d ago First seen · 34 lines · 67 tokens per session scan A 1d5d81e12a31

Subscribe to this mod's changes

vibe-handoff-summarizer is an agent published in the GitHub repository closedloop-ai/claude-plugins (122 stars, last pushed today), licensed Apache-2.0. It adds 46 tokens to every session and 885 once invoked, about $0.0002 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 2026-10-06.