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altinity-expert-clickhouse-security

altinity-expert-clickhouse-security is a skill for Claude Code, Codex from Altinity/altinity-skills. It costs 130 tokens per session (1,307 once invoked), scanned A, original, Apache-2.0.

A read-only security-audit guide for ClickHouse databases. It reviews users, roles, permissions, settings, row policies, external data sources, audit logs, and other security controls without exposing secrets.

In plain words
What is it for?
Use it to assess ClickHouse security posture, correlate permissions with exposure and behavior, classify findings, and receive targeted remediation guidance.
Why use it?
It helps operators find security risks with evidence while avoiding destructive changes, password guessing, and disclosure of passwords or keys.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

not rated 16repo 11d ago A scan 130 tokens original Apache-2.0

Good fit Use it to assess ClickHouse security posture, correlate permissions with exposure and behavior, classify findings, and receive targeted remediation guidance.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/altinity/altinity-skills/altinity-expert-clickhouse-security
View source ↗ Altinity/altinity-skills
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 Altinity/altinity-skills --skill altinity-expert-clickhouse-security
Clone the repo
git clone --depth 1 https://github.com/Altinity/altinity-skills

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 altinity-expert-clickhouse-security

README.md
[![agentmods](https://agentmods.dev/badge/skills/altinity/altinity-skills/altinity-expert-clickhouse-security.svg)](https://agentmods.dev/skills/altinity/altinity-skills/altinity-expert-clickhouse-security)
Your own site
<a href="https://agentmods.dev/skills/altinity/altinity-skills/altinity-expert-clickhouse-security"><img src="https://agentmods.dev/badge/skills/altinity/altinity-skills/altinity-expert-clickhouse-security.svg" alt="Measured on agentmods" height="20"></a>
Per session 130 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,307 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 $0.00130 $0.01307
Opus 5 $0.00065 $0.00654
Sonnet 5 $0.00026 $0.00261
Haiku 4.5 $0.00013 $0.00131

Measured 8d ago against content hash 996e2f5126df, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

altinity-expert-clickhouse-security 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 8d 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.

altinity-expert-clickhouse/skills/altinity-expert-clickhouse-security/SKILL.md · 76 lines

How it starts

The opening of the file, as written. The whole thing — 76 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Altinity Expert ClickHouse Security

Use this skill to perform a professional, read-only ClickHouse security audit. Treat the user as an operator or support engineer who needs a diagnosis, evidence, risk classification, and safe next steps.

Core behavior

  • Work as a senior ClickHouse security reviewer.
  • Prefer read-only SQL and metadata inspection.
  • Never run destructive SQL.
  • Never perform online password guessing.
  • Never print secrets, password hashes, salts, private keys, access keys, tokens, or recovered password candidates in normal reports.
  • Correlate findings. Do not flag a single setting without considering grants, network exposure, user intent, version, and observed query behavior.
  • State what could not be verified from SQL-only access.
  • Use ClickHouse and Altinity documentation as source of truth for version-specific behavior.
  • When recommendations are requested, provide minimal, targeted remediation steps after presenting the diagnosis. For grant changes, follow the least-privilege, role-based GRANT/REVOKE method of the altinity-expert-clickhouse-grants skill: emit the smallest scoped statements, prefer roles, and avoid broad *.* grants.

Standard workflow

  1. Establish scope:
    • live SQL access, exported system.* data, supplied users.xml / config.xml, or query-log extracts.
    • single node or cluster.
    • ClickHouse version and deployment model.
  2. Collect safe evidence. For a fast first pass, run the read-only inventory in checks.sql (version, SHOW ACCESS, users/roles/grants, row policies, profiles/quotas, named collections, functions, ports, secret-display, clusters). Then add, as needed:
    • supplied users.xml / config.xml snippets
    • recent system.query_log and system.session_log, if available.
  3. Load only the relevant reference files below for depth on each area.
  4. Produce findings with:
    • title
    • severity
    • confidence
    • evidence summary
    • why it matters
    • what was not verifiable
    • suggested confirmation or remediation, only when appropriate.

Read the full file on GitHub · 76 lines

Files

What ships with it

21 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 8d ago First seen · 76 lines · 130 tokens per session scan A 996e2f5126df

Subscribe to this mod's changes

altinity-expert-clickhouse-security is a skill published in the GitHub repository Altinity/altinity-skills (16 stars, last pushed 11d ago), licensed Apache-2.0. It adds 130 tokens to every session and 1,307 once invoked, about $0.0006 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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