Borrowing it
Nothing to install: this file belongs to MotleyAI/slayer. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/MotleyAI/slayer/main/CLAUDE.mdgit clone --depth 1 https://github.com/MotleyAI/slayerWrote 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/instructions/motleyai/slayer/claude-md)<a href="https://agentmods.dev/instructions/motleyai/slayer/claude-md"><img src="https://agentmods.dev/badge/instructions/motleyai/slayer/claude-md/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/instructions/motleyai/slayer/claude-md"><img src="https://agentmods.dev/badge/instructions/motleyai/slayer/claude-md.svg" alt="Reviewed on agentmods" width="80" 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 | $0.01405 | $0.01405 |
| Opus 5.5 | $0.00562 | $0.00562 |
| Sonnet 5.5 | $0.00281 | $0.00281 |
| Haiku 4.5 | $0.00140 | $0.00140 |
Grade A, and why
slayer CLAUDE.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 16d 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 — 111 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
Guidance for Claude Code when working in this repository.
What is SLayer?
SLayer (Semantic Layer) is a lightweight, open-source (MIT) semantic layer for AI agents, built by MotleyAI. Instead of writing raw SQL, agents describe what data they want — measures, dimensions, filters — and SLayer generates and executes the query.
When writing SLayer query examples or answering questions about syntax, capabilities, or
feature behaviour, read docs/ first — docs/concepts/ (queries, models, formulas,
references), docs/examples/, docs/cube/cube_import.md, docs/database-support.md,
docs/configuration/, docs/reference/.
Structure
The package map and per-node docs live in architecture/: package→node claims in the
node metadata of the LikeC4 model architecture/model.c4 (enforced by la-arch-check from
MotleyAI/living-architecture), repo-wide settings in architecture/index.yaml, node descriptions in
architecture/*.arc42.md, cross-cutting principles in architecture/system.arc42.md §3,
and the enforcement-bundle commands in §4.
architecture/**/*.arc42.md and architecture/**/*.c4 are normative harnesses, like
tests: NEVER create, modify, or delete one without explicit per-change user approval —
present the exact edit and wait for the OK, even when a broader plan already mentioned it.
Common Commands
poetry install -E all # install with all extras
poetry run pytest -m "not integration" # unit tests (excludes integration)
poetry run pytest tests/ -m "integration and not metabase_e2e" -n logical --dist loadscope \
--ignore=tests/integration/test_integration_mysql.py \
--ignore=tests/integration/test_integration_clickhouse.py \
--ignore=tests/integration/test_integration_sqlserver.py \
--ignore=tests/integration/test_integration_trino.py # integration tests (CI settings — see Testing)
poetry run pytest tests/test_sql_generator.py -v # one file
poetry run slayer serve # REST API server
poetry run slayer mcp # MCP server
poetry run ruff check slayer/ tests/ # lint
poetry run la-arch-check # architecture check (as CI runs it)
poetry run la-arch-diagrams # regenerate arc42 diagrams
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.
- 16d ago Changed · +2 lines · +35 tokens per session 002344763ba3
- 20d ago Changed · -25 tokens per session 2006131d9582
- 22d ago Changed · +1 lines · +23 tokens per session 3cfe1dd2222a
- 24d ago Changed · +1 lines · +21 tokens per session eb2d9df5ff81
- 26d ago Changed · +7 lines · +130 tokens per session 836232e5e5dc
- 27d ago Changed · +2 lines · +63 tokens per session df54a1bc3022
- 1mo ago Changed · +6 lines · +113 tokens per session b122e9f6d1e0
- 1mo ago Changed · +8 lines · +152 tokens per session 056ef1b9de1c
- 1mo ago Changed · -25 lines · -884 tokens per session f9fc6e5c7573
- 1mo ago First seen · 109 lines · 1,777 tokens per session scan A 4f77b8ab5cc8
slayer CLAUDE.md is an instructions file published in the GitHub repository MotleyAI/slayer (313 stars, last pushed 2d ago), licensed MIT. It adds 1,405 tokens to every session, about $0.0056 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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