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 agentmods add instructions/oborchers/tablestakes/claude-mdgit clone --depth 1 https://github.com/oborchers/tablestakesWrote 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/oborchers/tablestakes/claude-md)<a href="https://agentmods.dev/instructions/oborchers/tablestakes/claude-md"><img src="https://agentmods.dev/badge/instructions/oborchers/tablestakes/claude-md.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 | $0.01195 | $0.01195 |
| Opus 5 | $0.00598 | $0.00598 |
| Sonnet 5 | $0.00239 | $0.00239 |
| Haiku 4.5 | $0.00120 | $0.00120 |
Grade A, and why
tablestakes 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 3d 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 — 94 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
What This Is
tablestakes is an MCP server that reads and edits HTML/Markdown tables in GitBook-synced documents. LLMs see clean pipe tables; files on disk stay in their original format (collapsed single-line HTML for GitBook, pipe tables for native Markdown). Published on PyPI (uvx tablestakes) and the MCP Registry (io.github.oborchers/tablestakes).
Commands
make init # First-time setup: venv + deps + pre-commit hooks
make check # Run all checks: format-check + lint + typecheck + test
make format # Auto-format with ruff
make test # Run tests
make test-cov # Tests with coverage report
make typecheck # mypy strict mode
make build # Build wheel (runs clean first)
Single test: uv run pytest tests/test_parser.py::TestDetectTables::test_mixed_document_table_count -v
Dev server with hot-reload: uv run fastmcp dev
List registered tools: uv run fastmcp list
Architecture
Four Layers
-
Parser (
parser.py) —detect_tables(content)scans Markdown, returnslist[RawTable]with byte offsets, classification, and cached BeautifulSoup Tags. Detection precedence: fenced code blocks (excluded) → HTML comments (excluded) →<table>blocks → GFM pipe tables. -
Converter (
converter.py) — Bidirectional HTML↔pipe. Read path:html_to_rows()usesmarkdownifyper-cell for inline tags (<strong>→**). Write path:rows_to_html()clones the original AST to preserve GitBook attributes (width=,data-*), falls back to fresh HTML build on structural changes. -
Hasher (
hasher.py) —compute_hash()returns SHA-256 truncated to 12 hex chars. Used for optimistic concurrency version tokens. -
Tools (
tools/read.py,tools/write.py,tools/column.py) — 9 MCP tools registered via@mcp.tool(output_schema=None)decorators.
The Shifted-Lines Safety Model
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.
- 3d ago First seen · 94 lines · 1,195 tokens per session scan A 0448837e27d0
tablestakes CLAUDE.md is an instructions file published in the GitHub repository oborchers/tablestakes (1 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 1,195 tokens to every session, about $0.0060 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 2026-08-31.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
spec-kit AGENTS.md
AGENTS.md instructions for github/spec-kit, covering agents.md, about spec kit and specify, quickstart — add a new integration in 5 steps, integration architecture and integrationmanifest — file tracking.
codex AGENTS.md
AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).
next.js AGENTS.md
Instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.