Borrowing it
Nothing to install: this file belongs to severity1/claude-agent-sdk-go. 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/severity1/claude-agent-sdk-go/main/CLAUDE.mdgit clone --depth 1 https://github.com/severity1/claude-agent-sdk-goWrote 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/severity1/claude-agent-sdk-go/claude-md)<a href="https://agentmods.dev/instructions/severity1/claude-agent-sdk-go/claude-md"><img src="https://agentmods.dev/badge/instructions/severity1/claude-agent-sdk-go/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/severity1/claude-agent-sdk-go/claude-md"><img src="https://agentmods.dev/badge/instructions/severity1/claude-agent-sdk-go/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 | $0.10905 | $0.10905 |
| Opus 5.5 | $0.04362 | $0.04362 |
| Sonnet 5.5 | $0.02181 | $0.02181 |
| Haiku 4.5 | $0.01090 | $0.01090 |
Grade A, and why
claude-agent-sdk-go CLAUDE.md scanned grade A with 1 finding 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 22d 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.
Runs shell commandslowCapability
Expected in a hook, worth knowing in a rule or an instructions file.
1. `Query()`/`Client` -> `Transport` interface -> `subprocess.Transport` -> Claude CLI How it starts
The opening of the file, as written. The whole thing — 197 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.
Overview
Claude Agent SDK for Go - Unofficial Go SDK for Claude Code CLI integration. Provides programmatic interaction through Query() (one-shot) and Client (streaming) APIs. Aims for 100% Python SDK parity with idiomatic Go (progress: docs/parity.md and docs/tracking/).
- Module:
github.com/severity1/claude-agent-sdk-go - Package:
claudecode - Go Version: 1.18+
Build & Development Commands
# Build and test
go build ./... # Build all packages
go test ./... # Run all tests
go test -race ./... # Race condition detection
go test -cover ./... # Coverage analysis
make test-cover # Tests with coverage + HTML report
# Specific test patterns
go test -v -run TestClient # Run client tests (verbose)
go test -count=3 -run TestClient # Run tests multiple times for consistency
make bench # Run benchmarks
# Code quality (run before commits)
gofmt -s -w . # Format code (CI uses `gofmt -s`; plain `go fmt ./...` omits -s and fails CI)
go vet ./... # Static analysis
golangci-lint run # Comprehensive linting
gocyclo -over 15 . # Cyclomatic complexity check
# Makefile targets (recommended)
make check # Run all checks (fmt, vet, lint, cyclo)
make cyclo # Show complex functions (threshold: 15)
make cyclo-check # Fail if complexity exceeds threshold (CI)
make fmt-check # Verify code formatting
make security # Run security vulnerability checks
make sdk-test # Test SDK as consumer would use it
make release-check # Pre-release validation
make ci # Run full CI pipeline locally
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.
- 22d ago Changed · +8 lines · +954 tokens per session ef65f11044e6
- 23d ago Changed · +4 lines · +811 tokens per session 1ff2efc5c0cd
- 24d ago Changed · +6 lines · +1,234 tokens per session a8f4e604d107
- 26d ago Changed · +13 lines · +3,843 tokens per session 58487d0a2b51
- 1mo ago First seen · 166 lines · 4,063 tokens per session scan A 4c5bf0197828
claude-agent-sdk-go CLAUDE.md is an instructions file published in the GitHub repository severity1/claude-agent-sdk-go (176 stars, last pushed 23d ago), licensed MIT. It adds 10,905 tokens to every session, about $0.0436 per session on Opus 5.5. A static security scan graded it A with 1 finding (runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
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 copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
vscode model-prompts.instructions.md
Model-specific prompt authoring and registry guidelines.