@kriginc/metabolizer

A small terminal client for the public Streamable HTTP MCP door at https://habitat.krig.mx/metabolizer/mcp. It needs no Metabolizer account or key. The client hides the MCP lifecycle and prints the complete structuredContent object; it never converts honesty cells into value-only prose.

The package is on npm:

npx --yes @kriginc/metabolizer resolve https://example.org/page --fields title

From a packed checkout artifact:

cd metabolizer/metabolizer-cli
npm pack
npx --yes --package ./kriginc-metabolizer-*.tgz metabolizer \
  resolve https://example.org/page --fields title

The unscoped registry name metabolizer belongs to an unrelated package, so npx metabolizer does not install this client. A bin alias cannot change which package npm fetches.

The skill inside

The tarball carries an agent-skill unit at skills/metabolizer/ — one SKILL.md (what an agent reads) and one CLAIMS.md (the command behind every claim it makes). To install it for Claude Code:

mkdir -p ~/.claude/skills && cp -R package/skills/metabolizer ~/.claude/skills/

What it sends

For each invocation the client sends initialize, notifications/initialized, then tools/call. It accepts either JSON or SSE, uses a server-issued session id if present, and sends no Authorization header. --fields is passed to the server; projection and withheld-address accounting remain server decisions.

The default output is readable JSON containing every member the server placed in structuredContent, including st, basis, declined, substantiated, obs, drift, prov, val, confirm, next_move, age_s, staleness, and withheld_addresses when those members occur. --compact changes whitespace only.

Exit status 0 is any answered non-refusal outcome — read outcome to learn whether cells were served (ACQUISITION-REQUIRED, for example, answers with empty bindings at exit 0). Exit 2 is a visible tool or *-REFUSED outcome after its full body is printed — or, with empty stdout, a local usage error named on stderr — and 1 is network or protocol failure.

Two environment variables: METABOLIZER_MCP_ENDPOINT sets the endpoint when --endpoint is absent, and METABOLIZER_IN_PROJECT=1 makes the client assert @kriginc/metabolizer+inproject as its name — a marking for runs made from inside the Metabolizer project itself, so its demand log can tell those from a stranger's use. If you are not working on Metabolizer, leave it unset.

Run metabolizer --help for all options. Node.js 20 or newer is required.