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.
npx skills add cline/skills --skill clickhousegit clone --depth 1 https://github.com/cline/skillsWrote 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.
[](https://agentmods.dev/skills/cline/skills/clickhouse)<a href="https://agentmods.dev/skills/cline/skills/clickhouse"><img src="https://agentmods.dev/badge/skills/cline/skills/clickhouse.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00087 | $0.01921 |
| Opus 5 | $0.00044 | $0.00960 |
| Sonnet 5 | $0.00017 | $0.00384 |
| Haiku 4.5 | $0.00009 | $0.00192 |
Grade C, and why
clickhouse scanned grade C with 2 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 7d 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.
Downloads and executes remote codehighSupply chain
curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.
curl -fsSL https://clickhouse.com/cli | sh Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl -fsSL https://clickhouse.com/cli | sh How it starts
The opening of the file, as written. The whole thing — 157 lines — stays where its author put it; the contents beside it link to each section on GitHub.
ClickHouse via clickhousectl
Connect to ClickHouse and run queries using clickhousectl, the official ClickHouse CLI. This skill covers the parts a data analyst needs: authenticating, pointing at the right server, and running safe SQL. It does not use the ClickHouse MCP server; everything goes through the CLI.
Scope
This skill is for connecting and querying. For these other flows, use the bundled official ClickHouse skills (siblings in this directory) instead of reinventing them:
- Setting up a local dev environment from scratch (install ClickHouse, init a project, start a server, create schema):
../clickhousectl-local-dev/. - Deploying to or migrating into ClickHouse Cloud (create a service, migrate schema, provision an app user):
../clickhousectl-cloud-deploy/. - Writing or optimizing non-trivial SQL, or the agent schema-discovery and query-safety workflow:
../clickhouse-best-practices/. - Running SQL on local files or remote sources without a server:
../chdb-sql/.
These are vendored from https://github.com/ClickHouse/agent-skills (Apache-2.0). They can also be installed standalone with clickhousectl skills or npx skills add clickhouse/agent-skills.
Step 1: Ensure clickhousectl is installed
which clickhousectl
If not found, install it (downloads the right build for the OS, installs to ~/.local/bin/clickhousectl, and creates a chctl alias):
curl -fsSL https://clickhouse.com/cli | sh
If the command is still not found after install, ~/.local/bin is not on PATH for this session:
export PATH="$HOME/.local/bin:$PATH"
Step 2: Identify the target
Decide what you are querying before authenticating. There are three cases:
- A local ClickHouse server managed by
clickhousectl(started viaclickhousectl local server start). Query it by name. No cloud auth needed. - Any reachable ClickHouse over host/port (local or remote). No cloud auth needed.
- A ClickHouse Cloud service. Requires cloud authentication (Step 3).
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.
- 7d ago First seen · 157 lines · 87 tokens per session scan C e2d82fe9b3f8
clickhouse is a skill published in the GitHub repository cline/skills (23 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 87 tokens to every session and 1,921 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it C with 2 findings (downloads and executes remote code, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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