speckit-plan
SkillMediaLets your agent turn a feature spec into design documents like research notes, data models, and interface contracts.
Instructions available. Your AI can read the instructions. Execution depends on the setup they require.
Account requirements not reviewed. Check the skill instructions before use; ahel provides instructions and does not run this skill.
Add ahel to your AI once: Claude, ChatGPT, Cursor, Claude Code or Codex. Then ask it to use this.
Then ask your AI: use the speckit-plan skill
About this skill
Execute the implementation planning workflow using the plan template to generate design artifacts.
What this skill tells your AI
The instructions your AI receives, as published by heidsoft/itsm in .claude/skills/speckit-plan/SKILL.md and read by ahel’s review.
User Input
$ARGUMENTS
You MUST consider the user input before proceeding (if not empty).
Pre-Execution Checks
Check for extension hooks (before planning):
- Check if
.specify/extensions.ymlexists in the project root. - If it exists, read it and look for entries under the
hooks.before_plankey - If the YAML cannot be parsed or is invalid, skip hook checking silently and continue normally
- Filter out hooks where
enabledis explicitlyfalse. Treat hooks without anenabledfield as enabled by default. - For each remaining hook, do not attempt to interpret or evaluate hook
conditionexpressions:- If the hook has no
conditionfield, or it is null/empty, treat the hook as executable - If the hook defines a non-empty
condition, skip the hook and leave condition evaluation to the HookExecutor implementation
- If the hook has no
- When constructing slash commands from hook command names, replace dots (
.) with hyphens (-). For example,speckit.git.commit→/speckit-git-commit. - For each executable hook, output the following based on its
optionalflag:- Optional hook (
optional: true):## Extension Hooks **Optional Pre-Hook**: {extension} Command: `/{command}` Description: {description} Prompt: {prompt} To execute: `/{command}` - Mandatory hook (
optional: false):## Extension Hooks **Automatic Pre-Hook**: {extension} Executing: `/{command}` EXECUTE_COMMAND: {command} Wait for the result of the hook command before proceeding to the Outline.
- Optional hook (
- If no hooks are registered or
.specify/extensions.ymldoes not exist, skip silently
Outline
-
Setup: Run
.specify/scripts/bash/setup-plan.sh --jsonfrom repo root and parse JSON for FEATURE_SPEC, IMPL_PLAN, SPECS_DIR, BRANCH. For single quotes in args like "I'm Groot", use escape syntax: e.g 'I'''m Groot' (or double-quote if possible: "I'm Groot"). -
Load context: Read FEATURE_SPEC and
.specify/memory/constitution.md. Load IMPL_PLAN template (already copied). -
Execute plan workflow: Follow the structure in IMPL_PLAN template to:
- Fill Technical Context (mark unknowns as "NEEDS CLARIFICATION")
- Fill Constitution Check section from constitution
- Evaluate gates (ERROR if violations unjustified)
- Phase 0: Generate research.md (resolve all NEEDS CLARIFICATION)
- Phase 1: Generate data-model.md, contracts/, quickstart.md
- Phase 1: Update agent context by running the agent script
- Re-evaluate Constitution Check post-design
Mandatory Post-Execution Hooks
You MUST complete this section before reporting completion to the user.
Check if .specify/extensions.yml exists in the project root.
- If it does not exist, or no hooks are registered under
hooks.after_plan, skip to the Completion Report. - If it exists, read it and look for entries under the
hooks.after_plankey. - If the YAML cannot be parsed or is invalid, skip hook checking silently and continue to the Completion Report.
- Filter out hooks where
enabledis explicitlyfalse. Treat hooks without anenabledfield as enabled by default. - For each remaining hook, do not attempt to interpret or evaluate hook
conditionexpressions:- If the hook has no
conditionfield, or it is null/empty, treat the hook as executable - If the hook defines a non-empty
condition, skip the hook and leave condition evaluation to the HookExecutor implementation
- If the hook has no
- When constructing slash commands from hook command names, replace dots (
.) with hyphens (-). For example,speckit.git.commit→/speckit-git-commit. - For each executable hook, output the following based on its
optionalflag:- Mandatory hook (
optional: false) — You MUST emitEXECUTE_COMMAND:for each mandatory hook:## Extension Hooks **Automatic Hook**: {extension} Executing: `/{command}` EXECUTE_COMMAND: {command} - Optional hook (
optional: true):## Extension Hooks **Optional Hook**: {extension} Command: `/{command}` Description: {description} Prompt: {prompt} To execute: `/{command}`
- Mandatory hook (
Completion Report
Command ends after Phase 2 planning. Report branch, IMPL_PLAN path, and generated artifacts.
Phases
Phase 0: Outline & Research
-
Extract unknowns from Technical Context above:
- For each NEEDS CLARIFICATION → research task
- For each dependency → best practices task
- For each integration → patterns task
-
Generate and dispatch research agents:
For each unknown in Technical Context: Task: "Research {unknown} for {feature context}" For each technology choice: Task: "Find best practices for {tech} in {domain}" -
Consolidate findings in
research.mdusing format:- Decision: [what was chosen]
- Rationale: [why chosen]
- Alternatives considered: [what else evaluated]
Output: research.md with all NEEDS CLARIFICATION resolved
Phase 1: Design & Contracts
Prerequisites: research.md complete
-
Extract entities from feature spec →
data-model.md:- Entity name, fields, relationships
- Validation rules from requirements
- State transitions if applicable
-
Define interface contracts (if project has external interfaces) →
/contracts/:- Identify what interfaces the project exposes to users or other systems
- Document the contract format appropriate for the project type
- Examples: public APIs for libraries, command schemas for CLI tools, endpoints for web services, grammars for parsers, UI contracts for applications
- Skip if project is purely internal (build scripts, one-off tools, etc.)
-
Create quickstart validation guide →
quickstart.md:- Document runnable validation scenarios that prove the feature works end-to-end
- Include prerequisites, setup commands, test/run commands, and expected outcomes
- Use links or references to contracts and data model details instead of duplicating them
- Do not include full implementation code, model/service/controller bodies, migrations, or complete test suites
- Keep this artifact as a validation/run guide; implementation details belong in
tasks.mdand the implementation phase
-
Agent context update:
- Update the plan reference between the
<!-- SPECKIT START -->and<!-- SPECKIT END -->markers inCLAUDE.mdto point to the plan file created in step 1 (the IMPL_PLAN path)
- Update the plan reference between the
Output: data-model.md, /contracts/*, quickstart.md, updated agent context file
Key rules
- Use absolute paths for filesystem operations; use project-relative paths for references in documentation and agent context files
- ERROR on gate failures or unresolved clarifications
Done When
- Plan workflow executed and design artifacts generated
- Extension hooks dispatched or skipped according to the rules in Mandatory Post-Execution Hooks above
- Completion reported to user with branch, plan path, and generated artifacts
Signals
- GitHub stars
- 77
- Forks
- 18
- Last commit
- Oct 2026
Advanced
- Item type
- skill
- Key
speckit-plan-heidsoft- Source
- github.com/heidsoft/itsm
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