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/gigaverse-app/langsmith-cli/claude-mdgit clone --depth 1 https://github.com/gigaverse-app/langsmith-cliWrote 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/gigaverse-app/langsmith-cli/claude-md)<a href="https://agentmods.dev/instructions/gigaverse-app/langsmith-cli/claude-md"><img src="https://agentmods.dev/badge/instructions/gigaverse-app/langsmith-cli/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 | $0.09358 | $0.09358 |
| Opus 5 | $0.04679 | $0.04679 |
| Sonnet 5 | $0.01872 | $0.01872 |
| Haiku 4.5 | $0.00936 | $0.00936 |
Grade A, and why
langsmith-cli 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 — 1,019 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.
Project Overview
langsmith-cli is a context-efficient CLI tool for LangSmith that serves as both a standalone developer tool and a Claude Code plugin. It replaces heavy MCP servers with lightweight, on-demand skills while providing 100% feature parity plus superior features.
To understand how to use this tool, read the skill definition at skills/langsmith/SKILL.md and its reference files under skills/langsmith/references/. The skill teaches agents how to use the CLI efficiently (cache-first workflow, mandatory flags, field pruning, etc.).
Key Design Philosophy:
- Lazy Loading: Heavy imports (langsmith, rich) only load when commands execute
- Context Efficiency: Field pruning (
--fields) reduces token usage by ~90% - Dual UX: Rich tables for humans, strict JSON for agents
- Type Safety: Strict SDK contracts, no stringly-typed logic (in progress)
Development Commands
Environment Setup
# Install dependencies
uv sync
# Install pre-commit hooks
uv run pre-commit install
Testing
# Run all tests (parallel by default with -n auto)
uv run pytest
# Run with coverage (serial is faster for coverage)
uv run pytest --cov=src --cov-report=term-missing -n 0
# Run specific test file
uv run pytest tests/test_runs.py -v
# Run specific test
uv run pytest tests/test_runs.py::test_runs_list -v
# Run serially (disable parallelization)
uv run pytest -n 0
# Run smoke tests (requires LANGSMITH_API_KEY)
# Smoke tests use in-process CLI invocation and session fixtures for speed
export LANGSMITH_API_KEY="lsv2_..."
uv run pytest tests/test_smoke.py -v
# Run E2E tests (requires LANGSMITH_API_KEY)
uv run pytest tests/test_e2e.py -v
Code Quality
# Linting and formatting (auto-fix)
uv run ruff check --fix
uv run ruff format
# Type checking
uv run pyright
# Run all pre-commit hooks manually
uv run pre-commit run --all-files
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 · 1,019 lines · 9,358 tokens per session scan A 89b5bed44eab
langsmith-cli CLAUDE.md is an instructions file published in the GitHub repository gigaverse-app/langsmith-cli (9 stars, last pushed 9d ago), licensed MIT. It adds 9,358 tokens to every session, about $0.0468 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.