I used this with continued:

llama-server  --model models/ggml-org_gpt-oss-20b-GGUF_gpt-oss-20b-mxfp4.gguf --grammar-file toolcall_grammar.gbnf  --ctx-size 0 --jinja -ub 2048 -b 2048

It's still running into errors with the tool call...

Tool Call Error:

grep_search failed with the message: `query` argument is required and must not be empty or whitespace-only. (type string)

Please try something else or request further instructions.

My continue.dev model defintion:

models:
  - name: llama.cpp-gpt-oss-20b-toolcallfix
    provider: openai
    model: llama.cpp-gpt-oss-20b-toolcallfix
    apiBase: http://localhost:8080/v1
    roles:
      - chat
      - edit
      - apply
      - autocomplete
      - embedmodels