Files
python-sdk/pkg
zeekayandHanzo Dev e89a367a6d fix(mcp): the default mode disabled the unified hanzo tool
0.15.13 shipped the 166-service surface switched off. `tools/list` against a
clean install returned 40 tools with no `hanzo`, and the server logged
"unified `hanzo` tool unavailable — keeping per-service tools enabled".

The import was fine; the mode gate was not. register_all_tools() asks
is_tool_enabled("hanzo", True), which returns tool_config["hanzo"] whenever the
key exists rather than falling back to the default. ModeLoader builds that
config by disabling every TOOL_REGISTRY key and re-enabling only the active
mode's tools. TOOL_REGISTRY has "hanzo"; the default personality's list did
not — so the "True" default was never reached and the tool was explicitly off.

Two things broke together, because the per-service cloud tools are retired only
once `hanzo` is enabled: the unified surface was absent AND the ten tools it
replaces were still mounted. The exact state 929e103e set out to end.

`hanzo` belongs in ESSENTIAL_TOOLS. It is an axis like fs or git — the single
seam to the platform — not a mode-specific extra. It stays out of
ESSENTIAL_SYSTEM_TOOLS so it remains disableable.

Verified in a clean uv venv from built wheels only (no editable, no PYTHONPATH):
tools/list now returns 31 tools including `hanzo`, and api/auth/billing/commerce/
iam/ingress/kms/mpc/paas/team are correctly gone (40 - 10 + 1). The tool answers
hanzo(service="services") with 166 services read live from
https://api.hanzo.ai/v1/openapi.json.

A test now pins the gate where it is actually decided. It fails against the
installed 0.15.13 (3 of 4) and passes against 0.15.14 — an import-level check
cannot catch this, because the import succeeds.

Co-authored-by: Hanzo Dev <[email protected]>
2026-07-27 21:08:44 -07:00
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