Python SDK reference

Start with the small package-root surface for ordinary synchronous tests:

from m3 import MCPTestKit, StdioServer, expect

Use focused modules for the rest of the supported contract:

Need	Reference
Core kit, direct operations, and agent sessions	Core execution
Server, result, policy, and operation values	Types
Execution assertions	Matchers
Typed traces	Observability
Evaluators and aggregation	Evaluations
Elicitation and managed input	Elicitation
Matrix cases	Matrices
Test doubles and snapshots	Testing utilities
Persistent and in-memory stores	Storage
Exceptions	Errors

Each page explains ownership, inputs, results, and failure behavior. Exact signatures are checked against the release's public export contract.

Use the Python API inventory for exact signatures, model fields, and public methods across every declared module.