altinity-skills AGENTS.md

Project instructions for checking a connection to ClickHouse, a database designed for fast analytical queries. They require testing the connection with a query that reports the server name and version.

In plain words
What is it for?
Use it when an agent needs to verify ClickHouse connectivity before running audit queries. If the test fails, it tells the agent to request the missing connection information or report the failure.
Why use it?
It prevents audit work from starting when the database target or login details are missing, invalid, or unreachable.

Instructions file for CodexOpenCode

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.

agentmods
npx agentmods add instructions/altinity/altinity-skills/agents-md
Clone the repo
git clone --depth 1 https://github.com/Altinity/altinity-skills

Made for: Codex, OpenCode.

Per session 104 This file is loaded in full into every session.
When invoked 104 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
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 $0.00104 $0.00104
Opus 5 $0.00052 $0.00052
Sonnet 5 $0.00021 $0.00021
Haiku 4.5 $0.00010 $0.00010

Measured 2d ago against content hash 3924d91171e6, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

altinity-skills AGENTS.md 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 2d 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.md · 12 lines

What it actually says

ClickHouse connectivity

  • Preferred (default): Use the ClickHouse MCP tool (mcp__clickhouse__execute_query) when available.
  • Alternative: Use clickhouse-client when explicitly provide connection details

Run select hostName(), version() query to test.

If probe fails:

  • Stop immediately (do not proceed with audit queries and don't try to write scripts).
  • Ask for the missing connection context (target host/cluster, mode, credentials/profile), or return a clear failure.
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. 2d ago First seen · 12 lines · 104 tokens per session scan A 3924d91171e6

Subscribe to this mod's changes

altinity-skills AGENTS.md is an instructions file published in the GitHub repository Altinity/altinity-skills (16 stars, last pushed 5d ago), licensed Apache-2.0. It adds 104 tokens to every session, about $0.0005 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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