markdown-agents

name: markdown-agents description: Create, inspect, migrate, and maintain OpenCode markdown agents under .opencode/agents or ~/.config/opencode/agents, including frontmatter, permissions, provider options, examples, and restart workflow. compatibility: opencode metadata: domain: agents format: markdown

Markdown Agents

Use this skill when the user wants to manage OpenCode agents through Markdown files rather than JSON config.

This skill is responsible for:

• explaining how Markdown-defined agents are discovered
• choosing the correct scope: project-local or global
• creating or editing agent files
• reviewing existing agent prompts and frontmatter
• migrating older agent configs to the current preferred shape
• validating permissions, naming, and restart steps

When To Use This Skill

Use it for requests like:

• "create a review agent"
• "make this agent read-only"
• "show me all supported frontmatter fields"
• "move this agent from global to project-local"
• "why is this new agent not taking effect"
• "review this agent prompt and clean it up"

Default Position

• Prefer project-local .opencode/agents/ unless the user explicitly asks for a global change.
• Treat one Markdown file as one agent.
• Treat the filename as the agent name.
• Prefer permission over deprecated tools.
• Prefer steps over deprecated maxSteps.
• Put the actual system prompt in the Markdown body, not in frontmatter.
• Read existing agent files before editing so you preserve intentional conventions.
• If multiple files define the same agent name, call out the conflict instead of silently picking one.
• After creating or updating an agent, remind the user to reload or restart OpenCode. In gateway-managed sessions, prefer gateway_restart.

Recommended Workflow

1. Decide the target scope first: .opencode/agents/ or ~/.config/opencode/agents/.
2. Inspect any existing agent with the same name before writing a new file.
3. Decide whether the agent should be primary, subagent, or all.
4. Write concise frontmatter that encodes behavior through config where possible.
5. Write the real behavioral instructions in the Markdown body.
6. Validate filename, YAML, permissions, deprecated fields, and restart guidance.

What To Read Next

• For path, naming, and conflict rules: references/discovery-and-scope.md
• For frontmatter semantics and supported options: references/frontmatter-and-options.md
• For reusable templates and concrete agent examples: references/workflows-and-examples.md
• For final review before handing the change back: references/validation-checklist.md

Important Rules

• In OpenCode's Markdown agent loader, the Markdown body becomes the final prompt.
• description is effectively required in practice even if the schema is permissive in some code paths.
• hidden only matters for mode: subagent.
• Ordered permission objects such as permission.bash and permission.task are order-sensitive; the last matching rule wins.
• Unknown top-level frontmatter keys are collected into model options, which is useful for provider-specific fields but should still be kept deliberate and readable.

Expected Outputs

When this skill triggers, the result should usually be one of:

• an explanation of which file should be created or edited
• a new Markdown agent file
• an update to an existing agent's frontmatter or prompt body
• a migration from deprecated fields to recommended ones
• a review of an existing agent with concrete findings and suggested fixes

Sources

• OpenCode agents docs: https://opencode.ai/docs/en/agents/#markdown
• OpenCode source config schema: https://github.com/sst/opencode/blob/dev/packages/opencode/src/config/config.ts