v5.19.0

Hermes Agent at Claude Code parity: knowl init hermes.

Hermes Agent is configured through the shell hooks in its own config.yaml, which take Claude Code's wire format: knowl init hermes writes mcp_servers.knowl and one hooks.<event> entry each for on_session_start, pre_llm_call, pre_tool_call (matched to write_file|patch), post_tool_call, pre_verify, on_session_end and on_session_finalize. pre_llm_call carries the turn card, pre_tool_call blocks a refused write on exit 2, and pre_verify — which fires before an edit turn finishes and accepts Claude's {"decision": "block"} — carries the capture nudge, so Hermes reaches every capability. Init edits config.yaml as a YAML document (comments survive) and never runs hermes itself, whose own mutators rewrite the file without comments and can stop on an interactive prompt. Hermes asks for consent once per hook at the terminal on first use; gateway and Hermes Desktop runs need that approval or hooks_auto_accept: true. Home is HERMES_HOME, else %LOCALAPPDATA%\hermes on Windows, else ~/.hermes.

User-owned YAML config files (config.yaml) are merged as documents: every comment survives (comment blocks may be re-indented to sit with their key), the file's line-ending convention is kept, and a file that fails to parse is reported and left untouched. yaml is now a direct dependency.

Antigravity is two products reading two MCP files, and knowl init antigravity now writes both. The IDE's "View raw config" opens ~/.gemini/antigravity/mcp_config.json; the agy CLI reads ~/.gemini/config/mcp_config.json, which Gemini CLI's migration often leaves at 0 bytes. The adapter had pointed at the IDE file alone, so the CLI's /mcp stayed empty. An empty JSON config is now read as "no servers" rather than a parse error, and a JSON MCP target takes a list of files: detect reports configured only when every file holds the entry, and configure merges into each.