- The client refuses a request whose encoded size exceeds what one RUDP send
carries (65,507 less the 36-byte header and the 6-byte channel id), before
connecting, as ClientError::TooLarge { bytes, limit }. It was reported as
a retryable Unavailable ("Message too long"). The MCP tools surface it as
isError with {"error":"TooLarge","bytes","limit"}.
- Arguments that fail to deserialize are still a tool error, now with the
same typed body as every other one: {"error":"InvalidInput","detail"}.
- A non-UTF-8 EUREKA_INSTANCE or HUGINN_ENDPOINT is reported as not valid
UTF-8 and not as unset.
- Tests: the schema walk asserts no $id or $schema below any tool's root; the
15 s timeout is measured against a silent daemon; the semantic part of a
query is observed on the wire; Internal's and TooLarge's bodies and the
InvalidInput rewrite are pinned; attribution is refused through the MCP
admit; oversize is TooLarge at and one past the limit.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
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