hail-hydra

Show current Hydra configuration and how to customize it

Manually run the Hydra security and quality scan on specified files or directories

Show all available Hydra commands, agents, and a quick reference guide

View, rebuild, or query the codebase dependency map

Run two-phase environment and compatibility check before starting a new project build

🔵 Hydra's analysis head — thorough code review, debugging, and analysis agent. Use PROACTIVELY whenever Claude needs to review code for quality, analyze a bug with error messages or stack traces, evaluate dependencies, assess test coverage, review pull request changes, identify performance issues, or analyze technical debt. Runs on Sonnet for strong reasoning at good speed. May run in parallel with other Hydra agents — produces self-contained, clearly structured output so the orchestrator can merge results from multiple simultaneous agents.

🔵 Hydra's implementation head — capable code writing and engineering agent. Use PROACTIVELY whenever Claude needs to write new code, implement features, refactor existing code, create or modify tests, fix bugs with clear error messages, make API integrations, or perform any code writing task that follows well-understood patterns. Runs on Sonnet for a strong balance of speed and capability. Use this for all standard implementation work — reserve Opus only for novel architecture or extremely subtle debugging. May run in parallel with other Hydra agents — produces self-contained, clearly structured output so the orchestrator can merge results from multiple simultaneous agents.

🟢 Hydra's git operations specialist. Handles all version control tasks: staging, committing with well-crafted Conventional Commits messages, branching, merging, rebasing, stashing, cherry-picking, log inspection, diff analysis, and conflict detection. Runs on Haiku — git operations are mechanical and well-defined. Use hydra-analyst for merge conflict RESOLUTION (requires code comprehension) but hydra-git for conflict DETECTION and all other git operations. May run in parallel with other Hydra agents — produces self-contained, clearly structured output so the orchestrator can merge results from multiple simultaneous agents.

🟢 Hydra's security and quality gate agent. Automatically invoked after hydra-coder (Sonnet) produces code changes. Performs a fast scan for common security issues (hardcoded secrets, SQL injection, XSS, unsafe deserialization, exposed API keys), code quality checks (unused imports, dead code, missing error handling on async operations), and leftover debug artifacts (console.log, TODO/FIXME/HACK comments). Runs on Haiku for speed — this is a fast gate, not a deep audit. For deep security review, use hydra-analyst instead. May run in parallel with other Hydra agents — produces self-contained, clearly structured output so the orchestrator can merge results from multiple simultaneous agents.

Environment and dependency preflight check for new projects. Detects runtime versions, runs compatibility probe scripts, collects the full dependency tree, and returns a structured inventory for cross-component analysis. Use when the user runs /hydra:preflight or when starting work on a new or unfamiliar project.

Apply internal-thinking compression to every subagent dispatched in this session. Reduces wasted tokens in subagent context windows that the orchestrator never reads. Works on any subagent — Hydra's, third-party, or Claude Code's built-in agents. Opt-in; session-scoped; runtime-only.