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Root-level anyOf in tool parameters violated the OpenAI tools contract:
OpenAI tolerated it, DeepSeek rejected it with a schema error, and GLM
silently emitted empty tool arguments (live-reproduced: five consecutive
workflow calls decoded as got {}). Replace the transport-level patch
with a structural contract:
- workflow Parameters: nest the 10-branch discriminated union under a
single params property; the wire root is now a plain object
- Tool.define: assert at construction time that parameters serialize to
a plain object root; violations fail registration with guidance
- provider transform: drop the openai-compatible root-anyOf patch,
superseded by the source-level contract
- native runtime gate: key off the SDK transport package instead of the
providerID so OpenAI-compatible relays can use the native path
fix(tool): require plain-object parameter roots per OpenAI tools contract
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Summary
Promote to main: structural fix replacing the transport-level root-anyOf patch (#260/#261, superseded).
paramsproperty — plain-object schema root on every transportTool.defineasserts at construction time that parameters serialize to a plain object root; violations fail registration with guidanceapi.npm) instead of providerIDEvidence
arguments: '{}'(empty); params-wrapped →{"params":{"action":"list"}}Dev validation (PR #262)