AB-3004 type_schema_mismatch

When it happens

type major version differs from the schema URL's version.

Hint

type says v{a} but schema points at v{b}. Use the schema URL for v{a}.

Troubleshooting

Sidecar sets both; this arises from hand-built envelopes.

See also

• Protocol spec
• MCP tools
• Task lifecycle
• CLI
• All error codes