ADK for Java is a code-first Java toolkit for building, evaluating, and deploying AI agents, including systems made from multiple cooperating agents and tools. Java developers use it to define agent behavior and orchestration in code, from local development through cloud deployment. The catalogue provides skills and instructions for working with the toolkit.
Borrowing it
Nothing to install: this file belongs to google/adk-java. 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/google/adk-java/main/CLAUDE.mdgit clone --depth 1 https://github.com/google/adk-javaWrote 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/google/adk-java/claude-md)<a href="https://agentmods.dev/instructions/google/adk-java/claude-md"><img src="https://agentmods.dev/badge/instructions/google/adk-java/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/google/adk-java/claude-md"><img src="https://agentmods.dev/badge/instructions/google/adk-java/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 | $0.00025 | $0.00025 |
| Opus 5.5 | $0.00010 | $0.00010 |
| Sonnet 5.5 | $0.00005 | $0.00005 |
| Haiku 4.5 | $0.00003 | $0.00003 |
Grade A, and why
adk-java 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 1mo 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.
This is a copy
100% identical to adk-go CLAUDE.md — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
What it actually says
See AGENTS.md for project context, commands, and contribution guidelines for AI coding agents.
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.
- 1mo ago First seen · 2 lines · 25 tokens per session scan A c0ffa88a6c0a
adk-java CLAUDE.md is an instructions file published in the GitHub repository google/adk-java (1,765 stars, last pushed yesterday), licensed Apache-2.0. It adds 25 tokens to every session, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to adk-go CLAUDE.md, differing in 0 lines, and is treated as a copy.
adk-java CLAUDE.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| adk-java CLAUDE.mdgoogle/adk-java | Instructions file | 1.8k | yesterday | Apache-2.0 | A | 25 | Claude Code |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | today | MIT | A | 7,461 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 5,516 | GitHub Copilot |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | today | MIT | A | 4,680 | Codex, OpenCode |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 3,093 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 274k | 2d ago | MIT | A | 4,313 | Codex, OpenCode |