OpenCode Harness

Pin the OpenCode SDK harness and a supported model.

Use agent_harness="opencode_sdk" when you want Managed Research to run through the OpenCode SDK harness.

Launch

run = client.research.swarms.create(
    objective="Review the repo and propose the smallest high-impact fix.",
    host_kind="daytona",
    work_mode="directed_effort",
    providers=[{"provider": "openrouter"}],
    runbook="lite",
    agent_harness="opencode_sdk",
    agent_model="anthropic/claude-haiku-4-5-20251001",
)

OpenCode models

Model ID	Launch access
anthropic/claude-sonnet-4-6	Beta Access
anthropic/claude-haiku-4-5-20251001	Standard
x-ai/grok-4.1-fast	Standard
moonshotai/kimi-k2.6	Standard

OpenCode models do not list reasoning_effort support in the backend catalog.

Failure notes

If the requested harness/model pair is unsupported, launch preflight and run start fail with a structured denial. See Models and Harnesses.