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Release Notes - v1.18.3

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Highlights

• Tool discovery registry with metadata/full-spec layering for progressive tool discovery.
• New tools tool for list/help/search of available tools without loading full specs.
• Capability to wire tool registries into agents for dynamic tool catalogs.

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New Features

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Tool Registry

• Added ToolRegistryContract and ToolRegistry for registering tool instances or factories.
• Added ToolPolicy filtering for allow/deny tool lists.
• Added metadata and full-spec resolution helpers to support progressive discovery.

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Tools Tool

• Added ToolsTool for list, help, and search actions (plus CLI-like command parsing).
• Supports locale-aware metadata/full spec rendering via registry.

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Agent Capability

• Added UseToolRegistry capability for agent blueprints to expose registries as tools.

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Tests

• Added registry and tools discovery tests for metadata/full spec, search, and help flows.