fission-ai__openspec/openspec/specs/cli-update/spec.md

Update Command Specification

Purpose

As a developer using OpenSpec, I want to update the OpenSpec instructions in my project when new versions are released, so that I can benefit from improvements to AI agent instructions.

Requirements

Requirement: Update Behavior

The update command SHALL update OpenSpec instruction files to the latest templates in a team-friendly manner.

Scenario: Running update command

• WHEN a user runs openspec update
• THEN replace openspec/AGENTS.md with the latest template
• AND if a root-level stub (AGENTS.md/CLAUDE.md) exists, refresh it so it points to @/openspec/AGENTS.md

Requirement: Prerequisites

The command SHALL require an existing OpenSpec structure before allowing updates.

Scenario: Checking prerequisites

• GIVEN the command requires an existing openspec directory (created by openspec init)
• WHEN the openspec directory does not exist
• THEN display error: "No OpenSpec directory found. Run 'openspec init' first."
• AND exit with code 1

Requirement: File Handling

The update command SHALL handle file updates in a predictable and safe manner.

Scenario: Updating files

• WHEN updating files
• THEN completely replace openspec/AGENTS.md with the latest template
• AND if a root-level stub exists, update the managed block content so it keeps directing teammates to @/openspec/AGENTS.md

Requirement: Tool-Agnostic Updates

The update command SHALL handle file updates in a predictable and safe manner while respecting team tool choices.

Scenario: Updating files

• WHEN updating files
• THEN completely replace openspec/AGENTS.md with the latest template
• AND update the root-level AGENTS.md using the OpenSpec markers only when that file already exists, keeping the stub content that links to @/openspec/AGENTS.md
• AND update only the OpenSpec-managed blocks in existing AI tool files using markers
• AND use the default directory name openspec
• AND be idempotent (repeated runs have no additional effect)
• AND respect team members' AI tool choices by not creating additional tool files beyond the root AGENTS.md
• AND do not create new root-level stub files when none are present

Requirement: Core Files Always Updated

The update command SHALL always update the core OpenSpec files and display an ASCII-safe success message.

Scenario: Successful update

• WHEN the update completes successfully
• THEN replace openspec/AGENTS.md with the latest template
• AND if a root-level stub exists, refresh it so it still directs contributors to @/openspec/AGENTS.md

Requirement: Slash Command Updates

The update command SHALL refresh existing slash command files for configured tools without creating new ones.

Scenario: Updating slash commands for Claude Code

• WHEN .claude/commands/openspec/ contains proposal.md, apply.md, and archive.md
• THEN refresh each file using shared templates
• AND ensure templates include instructions for the relevant workflow stage

Scenario: Updating slash commands for Cursor

• WHEN .cursor/commands/ contains openspec-proposal.md, openspec-apply.md, and openspec-archive.md
• THEN refresh each file using shared templates
• AND ensure templates include instructions for the relevant workflow stage

Scenario: Updating slash commands for OpenCode

• WHEN .opencode/command/ contains openspec-proposal.md, openspec-apply.md, and openspec-archive.md
• THEN refresh each file using shared templates
• AND ensure templates include instructions for the relevant workflow stage

Scenario: Missing slash command file

• WHEN a tool lacks a slash command file
• THEN do not create a new file during update

Edge Cases

Requirement: Error Handling

The command SHALL handle edge cases gracefully.

Scenario: File permission errors

• WHEN file write fails
• THEN let the error bubble up naturally with file path

Scenario: Missing AI tool files

• WHEN an AI tool configuration file doesn't exist
• THEN skip updating that file
• AND do not create it

Scenario: Custom directory names

• WHEN considering custom directory names
• THEN not supported in this change
• AND the default directory name openspec SHALL be used

Success Criteria

Users SHALL be able to:

• Update OpenSpec instructions with a single command
• Get the latest AI agent instructions
• See clear confirmation of the update

The update process SHALL be:

• Simple and fast (no version checking)
• Predictable (same result every time)
• Self-contained (no network required)