Borrowing it
Nothing to install: this file belongs to AlexWangDa/s3-mcp-server-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/AlexWangDa/s3-mcp-server-java/main/AGENTS.mdgit clone --depth 1 https://github.com/AlexWangDa/s3-mcp-server-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/alexwangda/s3-mcp-server-java/agents-md)<a href="https://agentmods.dev/instructions/alexwangda/s3-mcp-server-java/agents-md"><img src="https://agentmods.dev/badge/instructions/alexwangda/s3-mcp-server-java/agents-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/alexwangda/s3-mcp-server-java/agents-md"><img src="https://agentmods.dev/badge/instructions/alexwangda/s3-mcp-server-java/agents-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 | $0.00560 | $0.00560 |
| Opus 5.5 | $0.00224 | $0.00224 |
| Sonnet 5.5 | $0.00112 | $0.00112 |
| Haiku 4.5 | $0.00056 | $0.00056 |
Grade A, and why
s3-mcp-server-java AGENTS.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 2mo 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 — 33 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Repository Guidelines
Project Structure & Module Organization
Production code lives under src/main/java/org/springframework/ai/mcp/sample/server. Keep AWS client setup in config, access and path checks in security, tool behavior in service, and AWS-independent response records in entity. Runtime settings and stderr logging are in src/main/resources. Tests mirror those packages under src/test/java; MinIO and packaged-STDIO coverage belongs in integration. Design decisions and implementation plans are recorded in docs/superpowers.
Build, Test, and Development Commands
Use the checked-in Maven Wrapper so local and CI builds use the same Maven version.
./mvnw clean packagebuilds the executable JAR intarget/../mvnw -B testruns the fast unit-test suite../mvnw -B clean verifyruns all checks, including Failsafe integration tests; Docker is required for Testcontainers../mvnw -B -Dtest=S3ServiceReadTest testruns one test class while iterating.
Run the packaged server with java -jar target/s3-mcp-server-0.2.0-SNAPSHOT.jar --s3.region=us-east-1. Keep stdout reserved for MCP traffic.
Coding Style & Naming Conventions
Target Java 17 and indent Java with four spaces. Prefer constructor injection, immutable records, focused methods, and existing Spring conventions. Use UpperCamelCase for types, lowerCamelCase for methods and fields, and UPPER_SNAKE_CASE for constants. Name unit tests *Test and integration tests *IT. No formatter or linter is enforced, so match surrounding imports and whitespace.
Testing Guidelines
Use JUnit 5, AssertJ, and Mockito for isolated behavior. Use Testcontainers with the shared MinIO fixture for S3 compatibility tests. Cover success, policy rejection, error translation, and side effects; security fixes need a regression test. Run clean verify before submitting changes.
Commit & Pull Request Guidelines
Follow the repository's Conventional Commit style, for example feat: add bucket filter or docs: clarify MinIO setup. Keep commits scoped. Pull requests should explain behavior and security impact, link related issues, list verification commands and results, and update README/config examples when interfaces change. Attach screenshots only when a visual change exists.
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.
- 2mo ago First seen · 33 lines · 560 tokens per session scan A d45222b4dadc
s3-mcp-server-java AGENTS.md is an instructions file published in the GitHub repository AlexWangDa/s3-mcp-server-java (8 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 560 tokens to every session, about $0.0022 per session on Opus 5.5. 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.
s3-mcp-server-java AGENTS.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| s3-mcp-server-java AGENTS.mdAlexWangDa/s3-mcp-server-java | Instructions file | 8 | 2mo ago | Apache-2.0 | A | 560 | Codex, OpenCode |
| plan-forge dapr.instructions.mdsrnichols/plan-forge | Instructions file | 6 | 2d ago | MIT | A | 4,975 | GitHub Copilot |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 9,719 | GitHub Copilot |
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