archaeology

archaeology is a skill for Claude Code from ai-analyst-lab/ai-analyst-plugin. It costs 100 tokens per session (1,315 once invoked), scanned A, original, MIT.

A lookup tool for previously validated SQL examples, table notes, and join patterns stored in a project's knowledge files. SQL is the language commonly used to query databases.

In plain words
What is it for?
It helps find suitable tables, joins, and query patterns before analysis, and records validated SQL for later reuse.
Why use it?
It helps reuse known query approaches instead of rebuilding database queries from scratch.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the ai-analyst-plus plugin — 44 skills, 1 command, 13 agents shipped together

Good fit It helps find suitable tables, joins, and query patterns before analysis, and records validated SQL for later reuse.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/ai-analyst-lab/ai-analyst-plugin/archaeology
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 ai-analyst-lab/ai-analyst-plugin --skill archaeology
Clone the repo
git clone --depth 1 https://github.com/ai-analyst-lab/ai-analyst-plugin

Made for: Claude Code.

Or install ai-analyst-plus, the plugin that ships this one along with the rest of its 44 skills, 1 command, 13 agents.

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 archaeology

README.md
[![agentmods](https://agentmods.dev/badge/skills/ai-analyst-lab/ai-analyst-plugin/archaeology/github.svg)](https://agentmods.dev/skills/ai-analyst-lab/ai-analyst-plugin/archaeology)
Your own site
<a href="https://agentmods.dev/skills/ai-analyst-lab/ai-analyst-plugin/archaeology"><img src="https://agentmods.dev/badge/skills/ai-analyst-lab/ai-analyst-plugin/archaeology/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 archaeology

Your own site · 80×15
<a href="https://agentmods.dev/skills/ai-analyst-lab/ai-analyst-plugin/archaeology"><img src="https://agentmods.dev/badge/skills/ai-analyst-lab/ai-analyst-plugin/archaeology.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 100 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,315 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00100 $0.01315
Opus 5 $0.00050 $0.00658
Sonnet 5 $0.00020 $0.00263
Haiku 4.5 $0.00010 $0.00131

Measured 9d ago against content hash f576e9e3b62a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

archaeology 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 9d 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.

ai-analyst-plus/skills/archaeology/SKILL.md · 139 lines

How it starts

The opening of the file, as written. The whole thing — 139 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Skill: Query Archaeology

Purpose

Retrieve proven SQL patterns, table cheatsheets, and join patterns from the query archaeology store so agents reuse validated work instead of writing SQL from scratch. The skill also defines the store's local write path: after a validated analysis, the final SQL is curated back into the store (the Writer Convention below), which is what makes the retrieval loop close.

When to Use

  • Automatically before any analysis agent writes SQL (pre-flight step)
  • Manually when the user asks about known patterns for a table or join
  • After a validated analysis, to curate the proven SQL (Writer Convention)

Instructions

Step 1: Check the Index

Read .knowledge/query-archaeology/curated/index.yaml. Parse counters: cookbook_entries, table_cheatsheets, join_patterns.

If all three are zero (or the file is missing), stop here. Return nothing and do not mention archaeology to the user.

Step 2: Identify Search Terms

From the current analysis context, extract:

  • Table names the agent is about to query (e.g., orders, events)
  • Query intent tags (e.g., funnel, retention, revenue, cohort)

Step 3: Search the Three Stores

Search each store that has entries (per index counts). Match using case-insensitive substring -- order matches orders, order_items.

3a. Cookbook (curated/cookbook/*.yaml)

For each file, check:

  • tables array -- any element contains a search table name as substring?
  • tags array -- any element matches a query intent tag?

Extract on match: title, sql, tables, tags, and any caveats/notes.

3b. Table Cheatsheets (curated/tables/*.yaml)

For each file, check:

  • table_name contains a search table name as substring?

Extract on match: table_name, grain, primary_key, common_filters, gotchas, common_joins.

3c. Join Patterns (curated/joins/*.yaml)

For each file, check:

  • tables array -- at least two elements match search table names?
  • If only one search table, match if tables contains it as substring.

Read the full file on GitHub · 139 lines

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. 9d ago First seen · 139 lines · 100 tokens per session scan A f576e9e3b62a

Subscribe to this mod's changes

archaeology is a skill published in the GitHub repository ai-analyst-lab/ai-analyst-plugin (32 stars, last pushed 13d ago), licensed MIT. It adds 100 tokens to every session and 1,315 once invoked, 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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