chdb: Skill for Claude Code

.agents/skills/pr-description/SKILL.md

pr-description is a skill for Claude Code, Codex from chdb-io/chdb. It costs 29 tokens per session (177 once invoked), scanned A, original, Apache-2.0.

A skill for writing or updating a pull request title and description. A pull request is a proposed code change that reviewers inspect before it is merged.

In plain words
What is it for?
Use it when preparing a pull request description from the current changes, including their purpose, impact, limitations, and checks.
Why use it?
It keeps the summary tied to the actual diff and records only validation that really happened, avoiding invented results or links.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents).

This is chdb-io/chdb's own configuration. It tells Claude Code and Codex how to work on chdb 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 chdb configures →

About the project

chDB is an in-process OLAP SQL engine powered by ClickHouse, allowing applications to query analytical data without running a separate database server. Python users and data practitioners use it to work with formats such as Parquet, CSV, JSON, Arrow, and ORC through SQL or a pandas-compatible API. Its catalogue add-ons provide agent instructions, rules, skills, and an agent for working with the project.

chdb-io/chdb · 2,921 stars · on GitHub · clickhouse.com

Reuse

Borrowing it

Nothing to install: this file belongs to chdb-io/chdb. 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/chdb-io/chdb/main/.agents/skills/pr-description/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/chdb-io/chdb

Made for: Claude Code, Codex.

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 pr-description

README.md
[![agentmods](https://agentmods.dev/badge/skills/chdb-io/chdb/pr-description/github.svg)](https://agentmods.dev/skills/chdb-io/chdb/pr-description)
Your own site
<a href="https://agentmods.dev/skills/chdb-io/chdb/pr-description"><img src="https://agentmods.dev/badge/skills/chdb-io/chdb/pr-description/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 pr-description

Your own site · 80×15
<a href="https://agentmods.dev/skills/chdb-io/chdb/pr-description"><img src="https://agentmods.dev/badge/skills/chdb-io/chdb/pr-description.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 29 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 177 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 $0.00029 $0.00177
Opus 5.5 $0.00012 $0.00071
Sonnet 5.5 $0.00006 $0.00035
Haiku 4.5 $0.00003 $0.00018

Measured 1mo ago against content hash 0209ae3e9d71, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

pr-description 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 1mo 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.

.agents/skills/pr-description/SKILL.md · 27 lines

What it actually says

Pull Request Description

Inspect the diff against the base branch and the included commits before writing.

Title

  • Use a concise, specific, capitalized imperative.
  • Describe the outcome rather than the implementation mechanism.
  • Do not use Conventional Commit prefixes such as feat: or fix:.

Body

  • Explain what changed, why it changed, and its impact.
  • Link related issues when they are known.
  • List only validation that was actually run, including the result.
  • Mention breaking changes, limitations, or important reviewer context when applicable.

Do not invent behavior, test results, or issue links. Create or edit a remote pull request only when the user explicitly asks.

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. 1mo ago First seen · 27 lines · 29 tokens per session scan A 0209ae3e9d71

Subscribe to this mod's changes

pr-description is a skill published in the GitHub repository chdb-io/chdb (2,921 stars, last pushed 16d ago), licensed Apache-2.0. It adds 29 tokens to every session and 177 once invoked, about $0.0001 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 2026-09-29.

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