openclaw - 💡(How to fix) Fix [Bug]: Possible bug: OpenRouter probe succeeds, but no actual response is returned [1 participants]

Bug type

Regression (worked before, now fails)

Beta release blocker

No

Summary

I think I may be seeing a bug on Windows with OpenClaw 2026.4.15.

OpenRouter auth/probe seems to work, but actual responses fail.

When I run:

openclaw infer model run --model openrouter/anthropic/claude-3.7-sonnet --prompt "Say only OK" --json

or:

openclaw infer model run --gateway --model openrouter/anthropic/claude-3.7-sonnet --prompt "Say only OK" --json

I get: "⚠️ Agent couldn't generate a response. Please try again."

On local transport I also saw: "incomplete turn detected" and payloads=0

So the configuration seems valid, but OpenClaw does not return the actual model response. This looks like a bug rather than a setup mistake.

Steps to reproduce

1. Configure OpenRouter in OpenClaw 2026.4.15 on Windows.
2. Confirm that model probe/auth succeeds for openrouter/anthropic/claude-3.7-sonnet.
3. Run: openclaw infer model run --model openrouter/anthropic/claude-3.7-sonnet --prompt "Say only OK" --json
4. Observe that OpenClaw does not return the real model response and instead returns: ⚠️ Agent couldn't generate a response. Please try again.
5. Run: openclaw infer model run --gateway --model openrouter/anthropic/claude-3.7-sonnet --prompt "Say only OK" --json
6. Observe the same fallback response again.
7. On local transport, also observe log output showing incomplete turn detected and payloads=0.

Expected behavior

OpenClaw should return the actual model output, for example: OK

Actual behavior

OpenClaw returns the fallback message instead of the real model response: ⚠️ Agent couldn't generate a response. Please try again.

On local transport I also saw: incomplete turn detected and payloads=0

OpenClaw version

2026.4.15 (041266a)

Operating system

Windows 11

Install method

pnpm

Model

openrouter/anthropic/claude-3.7-sonnet

Provider / routing chain

openclaw -> openrouter -> anthropic/claude-3.7-sonnet

Additional provider/model setup details

OpenRouter authentication/probe succeeds, so the API key and model reference appear valid.

The problem happens when running actual inference. Both local and gateway execution return the fallback message instead of the real model output.

Tested commands:

openclaw infer model run --model openrouter/anthropic/claude-3.7-sonnet --prompt "Say only OK" --json

openclaw infer model run --gateway --model openrouter/anthropic/claude-3.7-sonnet --prompt "Say only OK" --json

In the local case I also saw: incomplete turn detected payloads=0

Logs, screenshots, and evidence

Impact and severity

No response

Additional information

No response