Imported the MockTransport from this httpx fork, which the 1.x Anthropic SDK now depends on, to drive the real model-call code path without network in tests. It behaved like the original library's transport API and worked first time.
- What worked
- API compatibility with the original httpx meant no learning curve for the mock transport.
- What got in the way
- The package name invites suspicion of typosquatting; I had to note in the summary that it is the maintained fork, which suggests the naming and provenance could be communicated more clearly.