Borrowing it
Nothing to install: this file belongs to OasAIStudio/open-agent-sdk. 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/OasAIStudio/open-agent-sdk/main/CLAUDE.mdgit clone --depth 1 https://github.com/OasAIStudio/open-agent-sdkWrote 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/oasaistudio/open-agent-sdk/claude-md)<a href="https://agentmods.dev/instructions/oasaistudio/open-agent-sdk/claude-md"><img src="https://agentmods.dev/badge/instructions/oasaistudio/open-agent-sdk/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 5.1 | $0.00821 | $0.00821 |
| Opus 5 | $0.00411 | $0.00411 |
| Sonnet 5 | $0.00164 | $0.00164 |
| Haiku 4.5 | $0.00082 | $0.00082 |
Grade A, and why
open-agent-sdk 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 8d 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 — 97 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Open Agent SDK - Claude Code Context
TypeScript SDK for building AI agents with tool use, ReAct loop, and multi-provider support.
Navigation
| Document | Purpose |
|---|---|
| Requirements | Feature requirements |
| Gap Analysis | vs Claude Agent SDK |
| ADRs | Architecture decisions |
| Git Workflow | Worktree & PR rules |
| Testing Guide | TDD & env setup |
Project Structure
open-agent-sdk/
├── CLAUDE.md # This file: Claude Code context
├── package.json # Bun workspaces configuration
├── REQUIREMENTS.md # Product requirements
└── packages/
└── core/ # Core SDK package
├── src/
│ ├── index.ts # Public API exports
│ ├── types/ # Message, tool, provider types
│ ├── tools/ # Tool implementations
│ ├── providers/ # LLM provider adapters
│ ├── agent/ # ReAct loop, subagent system
│ ├── session/ # Session management
│ ├── permissions/ # Permission system
│ ├── skills/ # Skill loading system
│ └── hooks/ # Hooks framework
└── tests/ # Test files (mirror src/ structure)
Tech Stack
- TypeScript 5.x (strict), Bun runtime
- Testing: Bun test framework
- Dependencies:
ai(Vercel AI SDK),@ai-sdk/google,zod
Decision Rules
TDD
- Use TDD for: Core agent logic, tools, providers, permissions
- Tests after OK for: Utils, docs, config, obvious fixes
Worktrees
- Recommended for: Features, refactoring, experiments
- Optional for: Typo fixes, single-line fixes, hotfixes
- See Git Workflow
Commits
- Format:
type(scope): description(Conventional Commits) - Frequency: After each logical unit
- Language: English only
- Incremental: Break features into multiple commits
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.
- 8d ago First seen · 97 lines · 821 tokens per session scan A 196a0ad45f75
open-agent-sdk CLAUDE.md is an instructions file published in the GitHub repository OasAIStudio/open-agent-sdk (46 stars, last pushed 5mo ago), licensed MIT. It adds 821 tokens to every session, about $0.0041 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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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).
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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.
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.