opencode

The open-source SST agent, run as opencode run. Headless opencode auto-rejects any permission left on “ask”, and models treat that rejection as a stop signal, so Jetty writes an opencode.json that allows everything up front. That file also registers Playwright and Firecrawl MCP servers on every run, Firecrawl with a Jetty-provided key, so browser automation and scraping work without any setup on your side.

Providers	`anthropic`, `openai`, `bedrock`, `openrouter`, `vllm`
Model ids	opencode wants `provider/id`; Jetty adds the prefix. Keep the vendor namespace on OpenRouter (`anthropic/claude-sonnet-5`), bare ids elsewhere, Bedrock's dotted form (`anthropic.claude-sonnet-5`).
MCP	Yes. Your `mcp_servers` are merged on top of the Playwright and Firecrawl presets.
Usage	Best-effort. opencode prints text rather than a stable event stream.
agent_env	—

vllm goes through the AI SDK's OpenAI-compatible loader on the chat completions wire, which makes opencode a good fit for a plain vLLM or SGLang server.

agent: opencode
model: anthropic/claude-sonnet-5
model_provider: openrouter

Back: Runtime Configuration — the full comparison table, frontmatter defaults, and per-run overrides.