Agents

Overview

Agents are specialized AI assistants for specific tasks. OpenCode supports two agent modes and multiple configuration formats.

Agent Types

Type	Description
`primary`	Main agents you interact with directly (Tab to switch)
`subagent`	Specialized assistants invoked by primary agents or via `@mention`

Built-in Agents

Agent	Mode	Description
`build`	primary	Default agent with all tools enabled
`plan`	primary	Analysis mode with `edit`/`bash` set to `ask`
`general`	subagent	General-purpose research and multi-step tasks
`explore`	subagent	Fast codebase exploration

JSONC Configuration

Define agents in opencode.jsonc:

{
  "agent": {
    "code-reviewer": {
      "description": "Reviews code for best practices",
      "mode": "subagent",
      "model": "anthropic/claude-sonnet-4-5",
      "temperature": 0.1,
      "prompt": "You are a code reviewer. Focus on security and performance.",
      "steps": 10,
      "tools": {
        "write": false,
        "edit": false
      },
      "permission": {
        "bash": "ask"
      }
    }
  }
}

Markdown Configuration

Place files in ~/.config/opencode/agents/ or .opencode/agents/:

~/.config/opencode/agents/review.md

---
description: Reviews code for quality and best practices
mode: subagent
model: anthropic/claude-sonnet-4-5
temperature: 0.1
tools:
  write: false
  edit: false
  bash: false
permission:
  edit: deny
  bash:
    "git diff": allow
    "git log*": allow
    "*": ask
---

You are in code review mode. Focus on:

- Code quality and best practices
- Potential bugs and edge cases
- Performance implications
- Security considerations

Provide constructive feedback without making direct changes.

Agent Options

Option	Type	Description
`description`	string	Required. Brief description of agent purpose
`mode`	`primary` / `subagent` / `all`	Agent mode (default: `all`)
`model`	string	Model override (`provider/model-id`)
`temperature`	number	0.0–1.0 (lower = more focused)
`steps`	number	Max agentic iterations before forced response
`prompt`	string	Custom system prompt (supports `{file:path}`)
`tools`	object	Tool enable/disable map
`permission`	object	Permission overrides
`disable`	boolean	Disable the agent

Temperature Guidelines

Range	Use Case
0.0–0.2	Code analysis, planning (focused/deterministic)
0.3–0.5	General development (balanced)
0.6–1.0	Brainstorming, exploration (creative)

Additional Model Options

Pass provider-specific options directly:

{
  "agent": {
    "deep-thinker": {
      "model": "openai/gpt-5",
      "reasoningEffort": "high",
      "textVerbosity": "low"
    }
  }
}

Getting Started

Profiles

CLI

Registries

Reference

Guides

Integrations

Enterprise

Security

Overview

Agent Types

Built-in Agents

JSONC Configuration

Markdown Configuration

Agent Options

Temperature Guidelines

Additional Model Options

See Also

​Overview

​Agent Types

​Built-in Agents

​JSONC Configuration

​Markdown Configuration

​Agent Options

​Temperature Guidelines

​Additional Model Options

​See Also

Overview

Agent Types

Built-in Agents

JSONC Configuration

Markdown Configuration

Agent Options

Temperature Guidelines

Additional Model Options

See Also