القائمة
How to write specs, name capabilities, and structure requirements. Load this when creating or reviewing proposals, specs, or capability lists.
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Continue working on an OpenSpec change by creating the next artifact. Use when the user wants to progress their change, create the next artifact, or continue their workflow.
Fast-forward through OpenSpec artifact creation. Use when the user wants to quickly create all artifacts needed for implementation without stepping through each one individually.
Start a new OpenSpec change using the experimental artifact workflow. Use when the user wants to create a new feature, fix, or modification with a structured step-by-step approach.
How to invoke the openspec CLI. Load this BEFORE running any openspec commands.
Principles and patterns for writing agent definitions
Principles and patterns for writing slash command definitions
| name | spec-writing |
| description | How to write specs, name capabilities, and structure requirements. Load this when creating or reviewing proposals, specs, or capability lists. |
How to write specifications and name capabilities correctly in this project.
A capability is a product domain. One capability = one spec directory = one openspec/specs/<domain>/spec.md file.
Capabilities are named after the domain they represent. Features, behaviors, and functions within that domain are expressed as requirements inside the single spec.
| Correct (domain name) | Wrong (domain-feature) | Why it's wrong |
|---|---|---|
execution | execution-loop | "loop" is a feature within execution |
execution | execution-triggering | "triggering" is a requirement within execution |
auth | auth-login | "login" is a feature within auth |
auth | user-auth | "user-auth" scopes auth to a feature — the domain is auth |
data | data-export | "export" is a feature within the data domain |
planning | planning-validation | "validation" is a requirement within planning |
entry | entry-routing | "routing" is a requirement within entry |
spec-governance | spec-governance-naming | "naming" is a requirement within spec-governance |
Rule: If the name has a hyphen that separates a domain from a feature, it's wrong. The capability name IS the domain name. Everything after that first conceptual boundary is a requirement within the spec.
Note: some domains naturally have hyphens in their name (e.g., spec-governance). The test is whether the full name represents a coherent product domain, not whether it contains a hyphen.
A domain has exactly one spec at openspec/specs/<domain>/spec.md. All capabilities within the domain are expressed as requirements within that single spec.
openspec/specs/
execution/
spec.md <-- ONE spec, many requirements inside
planning/
spec.md <-- ONE spec, many requirements inside
spec-governance/
spec.md <-- ONE spec, many requirements inside
When writing a proposal's Capabilities section:
openspec/specs/The authoritative source for spec governance is openspec/specs/spec-governance/spec.md. Read it for full rules. Key points:
Value-centric: Every requirement must pass the litmus test: "Would a customer, user, or developer care if this stopped working?" If no, it belongs in a design doc.
No implementation references: Requirements and scenarios must not reference internal class names, method names, module paths, or data structures.
No domain names as subjects: Don't write "the planning domain SHALL..." or "available for the execution domain to execute." Use "the system," "the user," or passive voice.
RFC 2119 keywords: Use SHALL/MUST for normative requirements. No informal language ("should," "needs to").
Testable scenarios: Every requirement needs at least one scenario with WHEN/THEN format using #### headers. Each scenario must be specific enough to write an automated test.