Cerebras API and Dome

1. 01

   Add the connection

   The provider id is cerebras. Dome uses https://api.cerebras.ai/v1 and Cerebras' own model ids.

   $ dome models add gpt-oss-cerebras \
     --provider cerebras \
     --model gpt-oss-120b \
     --api-key "$CEREBRAS_API_KEY" \
     --attributes '{"lane":"fast"}' \
     --gateway prod-gateway

2. 02

   Pool it with Fireworks AI

   Add accounts/fireworks/models/gpt-oss-120b as a second connection. Members are tried in priority order.

   $ dome models pool create gpt-oss-120b \
     --failover-max all --gateway prod-gateway
    
   $ dome models pool member add gpt-oss-120b gpt-oss-cerebras --priority 0
   $ dome models pool member add gpt-oss-120b gpt-oss-fireworks --priority 1

3. 03

   Point your agent at the Gateway

   Any OpenAI-compatible client works. The agent's Dome key replaces the Cerebras key.

   from openai import OpenAI
    
   client = OpenAI(base_url=f"{GATEWAY_URL}/v1", api_key=DOME_AGENT_KEY)
   client.chat.completions.create(
       model="gpt-oss-120b",
       messages=[{"role": "user", "content": "Classify this caller's intent."}],
   )

Commands and rules tested against a Dome workspace on October 1, 2026. For anything about Cerebras itself, see Cerebras's documentation.

forbid (principal, action == Dome::Action::"llm:invoke", resource is Dome::LLMModel)
when { resource has lane && resource.lane == "fast" };