Telemetry not working with OTLP HTTP mode

[sebastien-prudhomme]

What happened?

When configuring an OTLP endpoint in Gemini CLI settings with HTTP protocol (not gRPC), it leads to an HTTP error and not metrics, logs or traces are push to the endpoint.

Gemini CLI is not using the correct paths to use the OLTP HTTP mode.

This closed PR fixed the bug: #16836

What did you expect to happen?

I expect to see data in my OpenTelemetry backend.

Client information

Client Information

Run gemini to enter the interactive CLI, then run the /about command.

> /about
│ CLI Version                                 0.25.0                                                                              │
│ Git Commit                                  eb8834341                                                                           │
│ Model                                       auto-gemini-3                                                                       │
│ Sandbox                                     no sandbox                                                                          │
│ OS                                          linux                                                                               │

Login information

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Anything else we need to know?

No response

[sebastien-prudhomme]

Duplicate of #15581 yet identified in an epic