elevanaltd ===MCP_TOOLS=== META: TYPE::SKILL VERSION::"1.0" STATUS::ACTIVE PURPOSE::"MCP tool implementation patterns for HestAI" DOMAIN::HEPHAESTUS[tool_crafting]⊕HERMES[communication]
§1::TOOL_STRUCTURE LOCATION::src/hestai_mcp/mcp/tools/ RETURN_TYPE::dict[str,Any] PATTERN::[ "async def my_tool_async(", " required_param: str,", " optional_param: str | None = None,", ") -> dict[str, Any]:", " """Tool description."""", " # Validate inputs first", " validated = validate_param(required_param)", " # Implementation", " return {"status": "success", "data": result}" ]
§2::SESSION_TOOLS CLOCK_IN::[ PURPOSE::"Start session, returns context paths + AI synthesis", PARAMS::[role,working_dir,focus?,model?], RETURNS::[session_id,context_paths,ai_synthesis] ] CLOCK_OUT::[ PURPOSE::"Archive session transcript to OCTAVE", PARAMS::[session_id,description?], RETURNS::[archive_path,learnings] ] BIND::[ PURPOSE::"Bootstrap agent binding with low token usage", PARAMS::[role,topic?,tier?,working_dir?], RETURNS::[agent_file,skills,context_paths] ]
§3::KEY_DIRECTORIES CONTEXT::.hestai/state/context/["Living context files (PROJECT-CONTEXT, etc.)"] ACTIVE::.hestai/state/sessions/active/["Current session data (gitignored)"] ARCHIVE::.hestai/state/sessions/archive/["Compressed session archives"] NORTH_STAR::.hestai/north-star/["North Star and specs (committed, PR-controlled)"]
§4::SHARED_UTILITIES LOCATION::src/hestai_mcp/mcp/tools/shared/ MODULES::[ path_resolution.py::"Path validation and traversal prevention", security.py::"Input sanitization", fast_layer.py::"Git state and branch detection", compression.py::"OCTAVE compression helpers" ]
§5::SECURITY PATH_VALIDATION::prevent_traversal[../,symlinks] INPUT_SANITIZATION::validate_before_use ROLE_VALIDATION::allowlist_pattern["^[a-z][a-z0-9-]*$"]
§6::ASYNC_PATTERNS REQUIREMENT::all_MCP_tools_must_be_async AI_INTEGRATION::AIClient.complete_text()[optional_synthesis] ERROR_HANDLING::graceful_fallback_on_failure
===END===