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 Altinity/altinity-skills --skill altinity-expert-clickhouse-overviewgit clone --depth 1 https://github.com/Altinity/altinity-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/altinity/altinity-skills/altinity-expert-clickhouse-overview)<a href="https://agentmods.dev/skills/altinity/altinity-skills/altinity-expert-clickhouse-overview"><img src="https://agentmods.dev/badge/skills/altinity/altinity-skills/altinity-expert-clickhouse-overview/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.
<a href="https://agentmods.dev/skills/altinity/altinity-skills/altinity-expert-clickhouse-overview"><img src="https://agentmods.dev/badge/skills/altinity/altinity-skills/altinity-expert-clickhouse-overview.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00069 | $0.01325 |
| Opus 5.5 | $0.00028 | $0.00530 |
| Sonnet 5.5 | $0.00014 | $0.00265 |
| Haiku 4.5 | $0.00007 | $0.00133 |
Grade A, and why
altinity-expert-clickhouse-overview 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.
How it starts
The opening of the file, as written. The whole thing — 59 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Health overview and routing
Answers "is this server healthy, and which area needs a deeper look?" from system.metrics, system.asynchronous_metrics, system.parts, system.disks, system.tables, system.query_log, system.errors and system.text_log. It is single-host by design; per-replica divergence belongs to the specialist skills.
Run altinity-expert-clickhouse-connection first if the connection mode, cluster and time window are not yet established.
Query packs
checks.sql— 14 checks: object counts, memory vs RAM, primary-key and dictionary RAM, disk usage, replication summary, system log TTL and size, hourly query error rate, part_log errors,system.errorstop codes, detached parts, recent warnings intext_log, background pool utilization.metrics.sql— 13 alert checks (idsA3.0.x) that return rows only when a threshold is breached; an empty result is OK. Checks A3.0.4 and A3.0.5 have two version-specific alternatives (@requires version<26.8/version>=26.8): run the one matching the server version.ddl_queue.sql— 1 check on the ON CLUSTER DDL queue;@requires keeper.
How to run the query packs
- Read each pack file from this skill's directory (the skill loader prints the directory path).
- Run statements one at a time, never a whole file. Statements end with
;and start with a-- @check <id> <title>header; keep the id with its result. - Honor
-- @requires: skip the statement when the named table is missing, whenkeeperis required and the server has no Keeper/ZooKeeper, or when the version condition is not met. List skipped ids with the reason. - Keep
{cluster}as written when a cluster macro exists; otherwise apply the connection skill's rewrite rule. Any other{placeholder}is a template variable: substitute a real value first or skip the statement. - On an error, record the check id and the first line of the error, then continue. Only for
UNKNOWN_IDENTIFIER, runDESCRIBE TABLE system.<table>and drop the missing column. - A
severitycolumn is the verdict for that row. Copy it; do not re-grade.
What ships with it
3 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.
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.
- 1mo ago Changed · -48 lines · +27 tokens per session 47671afcdb61
- 1mo ago First seen · 107 lines · 42 tokens per session scan A a05f1de00a58
altinity-expert-clickhouse-overview is a skill published in the GitHub repository Altinity/altinity-skills (17 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 69 tokens to every session and 1,325 once invoked, about $0.0003 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 2026-08-30.
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