diff --git a/.github/CODE_OF_CONDUCT.md b/.github/CODE_OF_CONDUCT.md
new file mode 100644
index 0000000..2a83bc2
--- /dev/null
+++ b/.github/CODE_OF_CONDUCT.md
@@ -0,0 +1,19 @@
+# Code of Conduct
+
+This project welcomes participation from everyone.
+
+## Expected behavior
+
+- Be respectful and constructive.
+- Focus on the work, not the person.
+- Give and receive feedback in good faith.
+
+## Unacceptable behavior
+
+- Harassment or discrimination
+- Threats, insults, or personal attacks
+- Deliberate disruption of discussion or collaboration
+
+## Enforcement
+
+Maintainers may remove content or decline contributions that violate this code of conduct.
diff --git a/.github/CONTRIBUTING.md b/.github/CONTRIBUTING.md
new file mode 100644
index 0000000..aa08dce
--- /dev/null
+++ b/.github/CONTRIBUTING.md
@@ -0,0 +1,31 @@
+# Contributing
+
+Thanks for helping improve `go-claude`.
+
+## Before you start
+
+- Read the README and the existing `AGENTS.md` notes in the repository.
+- Open an issue or discussion for larger changes before starting work.
+
+## Local development
+
+```bash
+go test ./...
+go build ./cmd/agent-cli
+```
+
+## Pull request checklist
+
+- Keep changes focused.
+- Run `go test ./...` before opening a PR.
+- Include context for user-facing changes.
+- Update documentation when behavior changes.
+
+## Reporting bugs
+
+Please include:
+
+- the command you ran
+- the expected result
+- the actual result
+- relevant logs or screenshots
diff --git a/.github/SECURITY.md b/.github/SECURITY.md
new file mode 100644
index 0000000..47ded16
--- /dev/null
+++ b/.github/SECURITY.md
@@ -0,0 +1,14 @@
+# Security Policy
+
+## Reporting a vulnerability
+
+Please report security issues privately through GitHub Security Advisories for this repository.
+
+Do not disclose sensitive details in public issues or pull requests.
+
+## What to include
+
+- A short summary of the issue
+- Steps to reproduce
+- Affected versions
+- Any proof-of-concept material, if available
diff --git a/.github/SUPPORT.md b/.github/SUPPORT.md
new file mode 100644
index 0000000..e6af06a
--- /dev/null
+++ b/.github/SUPPORT.md
@@ -0,0 +1,9 @@
+# Support
+
+For help using `go-claude`:
+
+- Read the README for setup and usage.
+- Open a GitHub issue for bugs or missing behavior.
+- Use GitHub Discussions for questions, ideas, or community support.
+
+When reporting a problem, include your OS, Go version, command, and the output you saw.
diff --git a/README.md b/README.md
index aee5241..62c9628 100644
--- a/README.md
+++ b/README.md
@@ -117,6 +117,13 @@ pkg/llm  pkg/tui pkg/config
      是否授权执行此操作？ (y/n/a)
 ```
 
+## Community
+
+- [Contributing Guide](.github/CONTRIBUTING.md)
+- [Code of Conduct](.github/CODE_OF_CONDUCT.md)
+- [Security Policy](.github/SECURITY.md)
+- [Support](.github/SUPPORT.md)
+
 ## License
 
 [Apache-2.0](LICENSE)
diff --git a/README_CN.md b/README_CN.md
index ca65821..c870c6e 100644
--- a/README_CN.md
+++ b/README_CN.md
@@ -117,6 +117,13 @@ pkg/llm  pkg/tui pkg/config
      是否授权执行此操作？ (y/n/a)
 ```
 
+## 社区
+
+- [贡献指南](.github/CONTRIBUTING.md)
+- [行为准则](.github/CODE_OF_CONDUCT.md)
+- [安全策略](.github/SECURITY.md)
+- [支持](.github/SUPPORT.md)
+
 ## 许可证
 
 [Apache-2.0](LICENSE)