OpenCode — Commands

File format

Markdown

Discovery path

.opencode/commands

Global install path

~/.config/opencode/commands

Syllago install method

Symlink, Direct copy

Symlink support

Yes

Native frontmatter fields

description, agent, model, subtask

Features

How each feature converts to syllago's canonical format. See format conversion for what these statuses mean.

Fields

Native frontmatter or config fields this provider exposes. The first column is the provider's own field name; the canonical key column links to syllago's cross-provider equivalent.

Provider field	Conversion	Canonical key	Summary
agent	Translated Conversion type: Translated Actively mapped to the target provider’s equivalent field during conversion. Learn more →	—	Frontmatter agent field routes the command to a specific named agent.
model	Translated Conversion type: Translated Actively mapped to the target provider’s equivalent field during conversion. Learn more →	—	Frontmatter model field overrides the default model for this command invocation.
subtask	Embedded Conversion type: Embedded No canonical equivalent — appended as prose in a conversion notes block so nothing is silently lost. Learn more →	—	Frontmatter subtask field runs the command as an isolated subtask rather than in the current session.

Other features

Behaviors, conventions, and capabilities that aren't tied to a single named field — things like path-based activation, discovery rules, and lifecycle behavior.

Feature	Conversion	Summary
argument_substitution	Translated Conversion type: Translated Actively mapped to the target provider’s equivalent field during conversion. Learn more →	Named arguments via $VAR tokens substituted from user input at invocation (pattern observed in custom_commands.go — e.g. $ISSUE_NUMBER).

Sources

Source
https://opencode.ai/docs/commands/