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earl
Secure CLI proxy for AI agents — HCL-defined operation templates with OS keychain secrets, MCP integration, and prompt injection protection
113stars
7forks
Rust
ai-agentscligraphqlgrpchclhttpmcpprompt-injectionrustsecurity
Quality signals
StaleNo testsNo CIThin docsNo licensePopular
AI summary
Auto-generated overview of what this skill does and when to reach for it.
CLI proxy that lets AI agents safely call external services without seeing sensitive operation details or secrets.
Use this when
- AI agents need to call GitHub, Stripe, or other APIs
- you want to prevent prompt injection in API responses
- secrets must stay out of logs and agent prompts
- you need to reuse the same API call across multiple agents
- you want to version-control API interactions like code
Don't use when
- when you need agents to see or edit the full request body
- if your workflows require real-time user input in every request
- for simple API calls that don't need secret protection
Capabilities
- HCL templates define API calls without exposing URLs or auth to agents
- OS keychain integration for secrets (no hardcoded tokens)
- MCP server mode for direct agent integration
- supports HTTP, GraphQL, gRPC, Bash, and SQL operations
- Jinja templating for dynamic request parameters
- policy engine for access control and JWT validation
InstallSKILLInstall as a Claude Code skill
Universal installANY TOOL
$ npx skillcity@latest mathematic-inc/earlAuto-detects the skill or MCP server in this repo and installs it for Claude Code, Codex, Cursor, Cline, OpenCode, Gemini CLI, Anti-Gravity, OpenClaw and Hermes.
Requires Node.js 18+ (ships with npx).
Or install manually
# Install into ~/.claude/skills/ mkdir -p ~/.claude/skills/earl curl -fsSL https://raw.githubusercontent.com/mathematic-inc/earl/main/SKILL.md -o ~/.claude/skills/earl/SKILL.md
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earl — sandboxAI sandbox
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