- F1: document AI_CHAT_DEFERRED_TOOLS in .env.example (AI_* section) — default
ON = deferred loading (compact catalog + loadTools), =false restores the old
"all tools always active" behavior.
- F2: integration test of the ON path in ai-chat-stream.int-spec.ts — a deferred
tool activated via loadTools is active on the SAME turn's next step but a fresh
turn starts cold (CORE + loadTools only), proving the per-turn activatedTools
Set does not leak across turns/chats. Drives the real streamText loop with a
MockLanguageModelV3 and inspects recorded per-step activeTools-filtered tools.
- F3: replace the magic toHaveLength(28) in tool-tiers.spec.ts with a two-way
partition against the LIVE in-app toolset (AiChatToolsService.forUser keys):
every non-core tool must appear in buildInAppDeferredCatalog and every catalog
entry must map to a real non-core tool — so a future tool forgotten in
INLINE_TOOL_TIERS fails the suite instead of silently vanishing from the agent.
No production logic change (mechanism was already reviewed correct).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
The in-app AI agent shipped all ~41 tool schemas on every model step. This
adds a two-tier catalog: core tools (frequent or one-line) stay always-active;
the rest are advertised as a compact catalog and their full schema is fetched
on demand via the loadTools meta-tool, wired through ai@6 prepareStep's
per-step activeTools.
- tools/tool-tiers.ts: CORE_TOOL_KEYS, INLINE_TOOL_TIERS, applyLoadTools,
catalog builders (+ tool-tiers.spec.ts, 13 cases).
- ai-chat.service.ts prepareAgentStep: returns activeTools =
[...CORE_TOOL_KEYS, loadTools, ...activatedTools]; per-turn activated Set.
- ai-chat.prompt.ts: buildToolCatalogBlock renders the deferred catalog.
- mcp/tool-specs.ts: tier + catalogLine metadata (external snake_case /mcp
transport unchanged).
- EnvironmentService.isAiChatDeferredToolsEnabled(): AI_CHAT_DEFERRED_TOOLS,
default ON per issue intent (kill-switch =false restores old behavior).
Gate: server ai-chat 631/631, tool-tiers 13/13, mcp 472/472, tsc clean.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
agent_coder
claude code agent 227