ketchup

ketchup is a skill for Claude Code from chhoumann/t3-pstack. It costs 45 tokens per session (1,199 once invoked), scanned A, a copy of ketchup, MIT.

A chat-summary workflow that catches a user up on work done since their last message, including changes, open decisions, and the state of related pull requests or automated checks.

In plain words
What is it for?
Use it with /ketchup to review recent project activity, pending decisions, running checks, and blocked or incomplete work.
Why use it?
It saves the user from reading the entire conversation and separates actions they must take from work the agent can continue doing.

Skill for Claude Code

Written for Claude Code: disable-model-invocation in frontmatter. Also seen: mentions subagents.

Part of the t3-pstack plugin — 62 skills, 4 agents, 1 hook shipped together

Good fit Use it with /ketchup to review recent project activity, pending decisions, running checks, and blocked or incomplete work.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/chhoumann/t3-pstack/ketchup
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.

Any agent
npx skills add chhoumann/t3-pstack --skill ketchup
Clone the repo
git clone --depth 1 https://github.com/chhoumann/t3-pstack

Made for: Claude Code.

Or install t3-pstack, the plugin that ships this one along with the rest of its 62 skills, 4 agents, 1 hook.

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 ketchup

README.md
[![agentmods](https://agentmods.dev/badge/skills/chhoumann/t3-pstack/ketchup/github.svg)](https://agentmods.dev/skills/chhoumann/t3-pstack/ketchup)
Your own site
<a href="https://agentmods.dev/skills/chhoumann/t3-pstack/ketchup"><img src="https://agentmods.dev/badge/skills/chhoumann/t3-pstack/ketchup/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 ketchup

Your own site · 80×15
<a href="https://agentmods.dev/skills/chhoumann/t3-pstack/ketchup"><img src="https://agentmods.dev/badge/skills/chhoumann/t3-pstack/ketchup.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 45 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,199 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 92% copy Near-identical to another mod 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 $0.00045 $0.01199
Opus 5.5 $0.00018 $0.00480
Sonnet 5.5 $0.00009 $0.00240
Haiku 4.5 $0.00005 $0.00120

Measured yesterday against content hash 99ea4b26b0c6, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

ketchup 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 yesterday.

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.

Origin

This is a copy

92% identical to ketchup — 7 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

plugins/pstack/skills/ketchup/SKILL.md · 38 lines

How it starts

The opening of the file, as written. The whole thing — 38 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Ketchup

Catch the user up on what changed in this chat since the last message they wrote before /ketchup, and help them understand each change, not only where it stands. Notifications and subagent results are not their messages. Assume the user remembers their last message and nothing after it.

Use /bro's voice, not its task: plain words, short sentences, no jargon, like one person catching up another. Say what changed for the user, not how you did it. Say "the tests pass", not "CI is green". Leave out hashes, file paths, commands, build numbers, and test counts unless the user needs one to act. Call each PR, branch, or agent by a name the user would know, not by a label you invented. If a fact needs context to make sense, give the context or leave the fact out.

Gather what changed

Keep this turn read-only. Make visuals only from what you already have: do not change code, start an app or a job, or post anything. Collect your own work since that message, reports from subagents, and messages from anyone else in this chat. Check the current state of each PR, CI run, or agent this chat touched, with task_status for a delegated child and list_thread_pull_requests for this thread's PRs. Check each number you will show against the facts it comes from, and say so when you correct one.

An action item is a decision or step only the user can take, such as a product choice, an approval, an irreversible action, or access you lack. Include any still waiting on the user, even one raised before their last message. Work you can still do yourself is not an action item. Never make up a call to fill the reply. A step the user did not ask for and the work does not need is not an action item, unless it is irreversible and waiting on the user: give it one action line, no visual, and skip what happens if the user does not answer.

Write the reply

Keep the whole reply well under 150 words, not counting visuals. When something is easier to grasp as a picture than as sentences, draw it: how a design or system works, a PR stack or dependency chain with each PR's state, a before and after of a fix, or options side by side. Never draw a status list or boxes with nothing connecting them. Never give a fact twice, in text or across visuals. Leave out work that changed nothing for the user. When words run short, cut from what happened before you cut from the action items.

Read the full file on GitHub · 38 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. yesterday Changed · +9 lines · +3 tokens per session 99ea4b26b0c6
  2. 3d ago First seen · 29 lines · 42 tokens per session scan A 25c302c5e2da

Subscribe to this mod's changes

ketchup is a skill published in the GitHub repository chhoumann/t3-pstack (190 stars, last pushed yesterday), licensed MIT. It adds 45 tokens to every session and 1,199 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 92% identical to ketchup, differing in 7 lines, and is treated as a copy.

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