OpenAI completion error: 400 JSON schema conversion failed: Pattern must start with '^' and end with '$

[AkumaTen]

Description of the bug

the version 0.18.0 introduces the error in the title when the MCP is added to kilo code (e.g ver 5.9.0) VS Code extension. the error occurs even in Roo Code.

I'm using the latest version of llama.cpp for windows and GLM 4.7 flash Q8 model and the error is displayed immediately after a simple prompt like "hello".

VS Code remotely attached to a WSL2 Ubuntu Noble distro with WSL2 configured as Mirrored

version 0.17.3 works fine of this MCP works fine

Reproduction

1. add the MCP to kilo code or Roo Code
2. write "hello" as the prompt
3. get the error
4. disable the MCP
5. repeat the prompt
6. the error is gone

Expectation

No response

MCP configuration

"chrome-devtools": {
            "command": "npx",
            "args": [
                "-y",
                "chrome-devtools-mcp@0.18.0",
                "--no-usage-statistics",
                "--no-performance-crux",
                "--browser-url=http://127.0.0.1:9222"
            ],
            "disabled": false,
            "alwaysAllow": [
                "click",
                "close_page",
                "drag",
                "emulate",
                "evaluate_script",
                "fill",
                "fill_form",
                "get_console_message",
                "get_network_request",
                "handle_dialog",
                "list_console_messages",
                "list_pages",
                "list_network_requests",
                "navigate_page",
                "new_page",
                "performance_analyze_insight",
                "performance_start_trace",
                "performance_stop_trace",
                "press_key",
                "resize_page",
                "select_page",
                "take_screenshot",
                "take_snapshot",
                "upload_file",
                "wait_for"
            ]
        }

Chrome DevTools MCP version

0.18.0

Chrome version

No response

Coding agent version

No response

Model version

No response

Chat log

No response

Node version

No response

Operating system

None

Extra checklist

• I want to provide a PR to fix this bug

[OrKoN]

This does not sound like the issue in chrome-devtools-mcp but rather an issue of compatibility of the specific client and the JSON schema as it works with other clients. Have you raised the issue with the MCP client?

[AkumaTen]

No I haven't, because the problem started right after I switched from 0.17.3 to 0.18.0. I reverted to 0.17.3 and the issue is gone. Don't you think that this is relevant? of course, it could be the combination of the two but the change between the two versions of the MCP is definitely causing the issue reported

[OrKoN]

We added a new tool in that version that has .endswith constraint on the JSON schema. MCP clients like gemini-cli handle it fine.

[OrKoN]

@AkumaTen would you mind filing an issue for https://github.com/Kilo-Org/kilocode that endswith in JSON schema of MCP servers does not seem to work with kilocode? Please also try v0.18.1 to confirm that the issue is fixed.

[AkumaTen]

@OrKoN thanks 1.8.1 fixed the problem. Issue opened: Kilo Code Issue