Agent Protocol Conformance Testing
Quick Take
- In brief: Conformance tests check an implementation against a protocol version.
- Useful for: Finding mismatches in messages, errors, states, and authentication.
- Main limit: Passing does not show that an agent solves useful tasks.
Overview
Two agents may connect for a simple request and still disagree about cancellation, timeouts, or invalid fields. Conformance testing checks these details against a shared protocol contract.
Core Definition
Protocol conformance testing checks whether an implementation follows specified message formats, rules, and state changes.
Background and Evolution
As agent protocols add clients, servers, transports, and optional capabilities, teams need repeatable checks for interoperability. A test result is meaningful only for the version and features it covers.
How It Works
A test harness sends valid and invalid requests, then checks responses, error codes, state transitions, and version negotiation. It may use mocks for edge cases and real services for deployment checks.
Applications in Software Development and Testing
Run protocol tests in CI when changing a client, server, or schema. Record the protocol version, transport, tested capabilities, and known gaps with the result.
Strengths and Limitations
Conformance tests make compatibility failures repeatable and easier to diagnose. They cannot assess business meaning, model quality, or all security risks.
Comparison with Similar Terms
Agent evaluation measures task results and behavior. Conformance testing checks protocol interactions. A system can pass protocol tests and still give wrong answers.
Best Practices
Test both valid and invalid messages, include failure and cancellation paths, and keep tests tied to a named specification version.
Common Pitfalls
Do not report “the agent is safe” or “the agent works” based only on a protocol pass. State exactly what the test covered.
FAQ
Does passing conformance tests mean an agent is useful or safe?
No. It means only that the tested protocol behavior matched the specified contract.