OpenSpec Fast-Forward Changes

VerifiedSafe

Quickly generate all implementation artifacts in one go, skipping step-by-step creation.

Sby Skills Guide Bot
DevelopmentIntermediate
7/22/2026
Claude Code
#openspec#spec-driven-development#artifact-generation#cli-workflow#planning

Recommended for

Automated summary

Automates the one-shot creation of every OpenSpec artifact required before implementation, relying on the openspec CLI to determine the build order and content of each file.

Strengths

  • Walks artifacts in dependency order using `openspec status --json` rather than making the user drive each step manually
  • Pulls instructions, rules and templates from `openspec instructions` for each artifact type, keeping output schema-compliant
  • Tracks progress with TodoWrite and stops exactly when every artifact in `applyRequires` is done
  • Falls back to AskUserQuestion when the request or a given artifact lacks context

Limitations

  • Assumes the openspec CLI is installed and the repo already has an initialized `openspec/changes/` directory
  • Depends on Claude Code-specific tools (AskUserQuestion, TodoWrite), so it is not portable as-is
  • Only produces planning artifacts — no implementation code is written
When to use it

Use it when a change is already clear and you want proposal, spec, design and tasks generated in a single pass so implementation can begin.

When not to use it

Avoid it if you want to review and approve each artifact individually, or if the openspec CLI is unavailable in your environment.

Security analysis

Safe
Quality score78/100

The skill only orchestrates the OpenSpec CLI (`openspec new/status/instructions`) plus agent-internal tools (AskUserQuestion, TodoWrite). All invoked commands are documented, non-destructive, and scoped to creating artifacts under `openspec/changes/<name>/`; there is no secret handling, no network exfiltration, no obfuscation, and no safety-disabling content. Bash usage is legitimate and limited, so risk is minimal.

No concerns found

How this analysis is made

Examples

Fast-forward a named change
Fast-forward the change `add-user-auth` — create all the OpenSpec artifacts I need so I can start implementing.
Generate everything from a description
I want to add SSO login with Google to our app. Run the full OpenSpec fast-forward and generate every artifact needed to start building.
Resume an incomplete change
Take the change `refactor-billing-service` and create whatever artifacts are still missing until it's apply-ready.

name: openspec-ff-change description: 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. license: MIT compatibility: Requires openspec CLI. metadata: author: openspec version: "1.0" generatedBy: "1.3.1"

Fast-forward through artifact creation - generate everything needed to start implementation in one go.

Input: The user's request should include a change name (kebab-case) OR a description of what they want to build.

Steps

  1. If no clear input provided, ask what they want to build

    Use the AskUserQuestion tool (open-ended, no preset options) to ask:

    "What change do you want to work on? Describe what you want to build or fix."

    From their description, derive a kebab-case name (e.g., "add user authentication" → add-user-auth).

    IMPORTANT: Do NOT proceed without understanding what the user wants to build.

    If the request uses overloaded repo terms or unclear planning language, apply grill-with-docs before creating artifacts so proposal/spec/design/task wording matches CONTEXT.md and real codebase terminology.

  2. Create the change directory

    openspec new change "<name>"
    

    This creates a scaffolded change at openspec/changes/<name>/.

  3. Get the artifact build order

    openspec status --change "<name>" --json
    

    Parse the JSON to get:

    • applyRequires: array of artifact IDs needed before implementation (e.g., ["tasks"])
    • artifacts: list of all artifacts with their status and dependencies
  4. Create artifacts in sequence until apply-ready

    Use the TodoWrite tool to track progress through the artifacts.

    Loop through artifacts in dependency order (artifacts with no pending dependencies first):

    a. For each artifact that is ready (dependencies satisfied):

    • Get instructions:
      openspec instructions <artifact-id> --change "<name>" --json
      
    • The instructions JSON includes:
      • context: Project background (constraints for you - do NOT include in output)
      • rules: Artifact-specific rules (constraints for you - do NOT include in output)
      • template: The structure to use for your output file
      • instruction: Schema-specific guidance for this artifact type
      • outputPath: Where to write the artifact
      • dependencies: Completed artifacts to read for context
    • Read any completed dependency files for context
    • Create the artifact file using template as the structure
    • Apply context and rules as constraints - but do NOT copy them into the file
    • Show brief progress: "✓ Created <artifact-id>"

    b. Continue until all applyRequires artifacts are complete

    • After creating each artifact, re-run openspec status --change "<name>" --json
    • Check if every artifact ID in applyRequires has status: "done" in the artifacts array
    • Stop when all applyRequires artifacts are done

    c. If an artifact requires user input (unclear context):

    • Use AskUserQuestion tool to clarify
    • Then continue with creation
  5. Show final status

    openspec status --change "<name>"
    

Output

After completing all artifacts, summarize:

  • Change name and location
  • List of artifacts created with brief descriptions
  • What's ready: "All artifacts created! Ready for implementation."
  • Prompt: "Run /opsx:apply or ask me to implement to start working on the tasks."

Artifact Creation Guidelines

  • Follow the instruction field from openspec instructions for each artifact type
  • The schema defines what each artifact should contain - follow it
  • Read dependency artifacts for context before creating new ones
  • Use template as the structure for your output file - fill in its sections
  • IMPORTANT: context and rules are constraints for YOU, not content for the file
    • Do NOT copy <context>, <rules>, <project_context> blocks into the artifact
    • These guide what you write, but should never appear in the output

Guardrails

  • Create ALL artifacts needed for implementation (as defined by schema's apply.requires)
  • Always read dependency artifacts before creating a new one
  • If context is critically unclear, ask the user - but prefer making reasonable decisions to keep momentum
  • If a change with that name already exists, suggest continuing that change instead
  • Verify each artifact file exists after writing before proceeding to next

From the file to a first result

The download contains exactly the content displayed on this page. This copy may differ from the latest version in the source repository.

View the source and supporting files

This download contains SKILL.md only. Any scripts, references, templates and dependencies are not included. Get the required files from the source, preserving their directory structure, before continuing.

1. Download the file

Download SKILL.md

From the root of a test project, save the file as .skill-downloads/openspec-fast-forward-changes-mrwak9a4/SKILL.md, or use the command below. This folder is for inspecting the skill before installation.

Command for macOS/Linux or WSL: requires a POSIX shell and curl. On Windows without WSL, use the download button and create the folder manually.

mkdir -p '.skill-downloads/openspec-fast-forward-changes-mrwak9a4' && curl --fail --show-error --location 'https://skills-guides.com/api/skills/openspec-fast-forward-changes-mrwak9a4/download' --output '.skill-downloads/openspec-fast-forward-changes-mrwak9a4/SKILL.md.part' && mv '.skill-downloads/openspec-fast-forward-changes-mrwak9a4/SKILL.md.part' '.skill-downloads/openspec-fast-forward-changes-mrwak9a4/SKILL.md'

2. Check prerequisites

Read SKILL.md before using it. If it references scripts or external services, inspect them and prepare the required access in your test environment.

Environment declared by the author: Requires openspec CLI.

No recognized prerequisites section in this file. This does not mean it is self-contained: libraries, tools and access requirements may be mentioned elsewhere in the content or source repository.

The platforms on this page are catalog indications. The paths below follow tool documentation; they do not prove this skill has been run in those tools. No minimum tool version is confirmed for this listing.

3. Load the skill

After inspection, copy the complete folder into your project using one of the commands below, then open a new tool session. The command stops if a folder with the same name already exists: compare the files before replacing it.

Claude Code
test -f '.skill-downloads/openspec-fast-forward-changes-mrwak9a4/SKILL.md' && test -s '.skill-downloads/openspec-fast-forward-changes-mrwak9a4/SKILL.md' && mkdir -p '.claude/skills' && test ! -e '.claude/skills/openspec-ff-change' && cp -R '.skill-downloads/openspec-fast-forward-changes-mrwak9a4' '.claude/skills/openspec-ff-change'

OpenSkills

OpenSkills must already be installed. The local install/read procedure is checked with OpenSkills 1.5.0, which requires Node.js ≥ 20.6.0. Catalog slugs are not resolved automatically.

Official OpenSkills installation
openskills install './.skill-downloads/openspec-fast-forward-changes-mrwak9a4'

openskills read 'openspec-fast-forward-changes-mrwak9a4'

Reading should display the installed file content and its base directory. It does not run the skill or install its dependencies.

For an agent that reads AGENTS.md, then sync the index. This command changes AGENTS.md: review the diff before using it.

openskills sync

Manual method or another tool: attach SKILL.md to a conversation, or open it in an agent that can read files. Include any required supporting resources. No universal folder is recognized by every tool.

4. Try a first task

Use a short, synthetic input: an API endpoint, a small document or an interface brief. In a new conversation, attach the file or give the agent its path, then adapt this request:

Read .skill-downloads/openspec-fast-forward-changes-mrwak9a4/SKILL.md and apply its instructions to this example: [describe a test input]. Identify any missing files, dependencies or access. Produce the result requested by the skill without inventing data or running unreviewed scripts.

Expected result: output matching the skill instructions, or a precise list of missing prerequisites. A read confirmation alone does not validate a first use. If an external resource is unavailable, that path remains untested.

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