{"repo":"NousResearch/hermes-agent","public_id":"58345","display_label":"xAI grok-4.3 drops optional multiline string MCP args","summary":"A bug where xAI grok-4.3 omits optional multiline string arguments in MCP tool calls, causing issues like blank emails. Addressed via a schema fix promoting optional string params to required and documentation warnings.","subsystem":"agent","counts":{"members":3,"open_issues":1,"open_issues_distinct":1,"open_prs":2,"closed_issues":0,"merged_prs":0,"attempt_prs":2},"landed_fix":null,"resolution":{"state":"unresolved","by":null},"freshness":{"state":"never_verified","last_verified_at":null,"is_stale":false},"grouping":{"backbone":"STRUCTURAL_SPANNING","link_density":0.6666666666666666},"fix_edges":[],"members":[{"kind":"issue","number":58345,"title":"[Bug]: xAI grok-4.3 drops optional multiline string args from MCP tool calls — AgentMail sends blank emails (docs recommend the affected combo)","url":null,"state":"open"},{"kind":"pr","number":58351,"title":"docs(xai): warn grok-4.3 drops optional multiline string args from MCP tool calls","url":null,"state":"open","close_reason":{"category":"uncategorized","implication":"needs_llm"},"merged":false},{"kind":"pr","number":58352,"title":"fix(schema): promote optional string params to required for xAI (#58345)","url":null,"state":"open","close_reason":{"category":"uncategorized","implication":"needs_llm"},"merged":false}],"trust":{"default_tier":"verified","includes_suggested":false}}