OpenCode — Rules

File format

Markdown

Discovery paths

AGENTS.md, CLAUDE.md

Global install path

~/.config/opencode

Syllago install method

Symlink, Direct copy

Symlink support

Yes

Features

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

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
cross_provider_recognition	Translated Conversion type: Translated Actively mapped to the target provider’s equivalent field during conversion. Learn more →	OpenCode reads both AGENTS.md (cross-provider convention) and CLAUDE.md (historical Claude Code convention) from project root
hierarchical_loading	Translated Conversion type: Translated Actively mapped to the target provider’s equivalent field during conversion. Learn more →	Project-root AGENTS.md/CLAUDE.md combined with global context files at ~/.config/opencode/
AGENTS.md cross-provider convention	Preserved Conversion type: Preserved Syntax survives conversion but the target provider may not interpret it. Learn more →	Plain markdown rule file at project root, shared with other agent tools (no frontmatter, context-injected).
CLAUDE.md compatibility	Preserved Conversion type: Preserved Syntax survives conversion but the target provider may not interpret it. Learn more →	OpenCode also reads CLAUDE.md at project root for compatibility with Claude Code projects.

Sources

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