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Agent skill

Sdd Evolve

by madebyaris in madebyaris/spec-kit-command-cursor

Update specifications with discoveries made during development.

MITAuto-check passedDevelopment

Install Sdd Evolve

skills CLI
$ npx skills add madebyaris/spec-kit-command-cursor --skill sdd-evolve -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install madebyaris/spec-kit-command-cursor sdd-evolve --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/madebyaris/spec-kit-command-cursor.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.cursor/skills/sdd-evolve .claude/skills/sdd-evolve && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
sdd-evolve
GitHub stars
198
Token cost
~562 tokens
SKILL.md length
227 words
Files
4 (incl. scripts, references)
Skills in repo
6
Repo updated
First seen
Licence
MIT

At a glance

Update specifications with discoveries made during development.

  • Works in 4 steps: Categorize the Discovery → Assess Impact → Document the Change → …
  • Implementation reveals new requirements
  • SKILL.md covers When to Use, Protocol, Best Practices and References, plus 2 more sections
  • Runs Shell scripts from its folder

What it does

Sdd Evolve is an agent skill from madebyaris/spec-kit-command-cursor. Update specifications with discoveries made during development. Use when implementation reveals new requirements, constraints, or design changes.

Its SKILL.md is about 560 tokens, which your agent loads only when the skill is triggered. The skill folder holds 5 other files, including scripts and reference files (for example `references/changelog-format.md`, `references/propagation-guide.md` and `scripts/check-staleness.sh`).

It sits in Development. The repository describes itself as: SDD toolkit for Cursor IDE — /specify, /plan, /tasks to turn ideas into specs, plans, and actionable tasks. The licence is MIT.

When your agent uses it

  • Implementation reveals new requirements

Example prompts

  • “/sdd-evolve”

Requirements

  • A Bash shell

Workflow steps

4 steps, taken from the step headings in SKILL.md.

  1. Categorize the Discovery
  2. Assess Impact
  3. Document the Change
  4. Update Specs

What it can do on your machine

Read from SKILL.md and the folder at commit 36b26f9. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Ships 1 file in scripts/ (Shell), which the agent can run.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Sdd Evolve loads about 562 tokens when it runs, and up to ~1.6k if it reads all its reference files. Until then it costs about 39 tokens; SKILL.md has 227 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~39
When it runs · the whole SKILL.md, loaded when a task matches
~562
With references · SKILL.md plus every file in references/, read only if the agent opens them
~1.6k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.

SKILL.md

The full file from madebyaris/spec-kit-command-cursor at commit 36b26f9, republished under its MIT licence (© madebyaris). 227 words, ~562 tokens.

Download SKILL.mdSave it as .claude/skills/sdd-evolve/SKILL.md (or your agent's skills folder). This skill also uses 3 other files; get the full folder from GitHub.
name
sdd-evolve
description
Update specifications with discoveries made during development. Use when implementation reveals new requirements, constraints, or design changes.

SDD Evolve Skill

Keep specifications in sync with implementation discoveries.

When to Use

  • Implementation reveals new requirements
  • Technical constraints discovered during development
  • Design changes needed based on learnings
  • Edge cases found not in original spec

Protocol

Step 1: Categorize the Discovery
  • Discovery: New information that was unknown
  • Refinement: Clarification of existing requirement
  • Addition: New requirement not in original scope
  • Modification: Change to existing requirement
  • Removal: Requirement no longer needed
Step 2: Assess Impact
  1. Which spec files are affected?
  2. Does this change the plan?
  3. Are there downstream impacts?
  4. Should implementation pause for review?
Step 3: Document the Change
markdown
## Changelog

### [Date] - [Category]: [Brief Description]
**Context**: [Why this change is needed]
**Change**: [What specifically changed]
**Impact**: [How this affects existing work]
**Decision**: [What was decided]
Step 4: Update Specs

Modify the appropriate files: spec.md, plan.md, tasks.md, todo-list.md.

Best Practices

  1. Document immediately — don't wait until end of implementation
  2. Be specific — include enough detail to understand later
  3. Link to context — reference related tasks
  4. Assess impact — flag if review is needed
  5. Preserve history — never delete, always add changelog
  6. Propagate downstream — mark stale docs when upstream spec changes

References

  • references/changelog-format.md — Standard changelog formats for briefs, specs, and standalone changelogs
  • references/propagation-guide.md — How to detect and flag stale downstream documents when a spec changes

Scripts

  • scripts/check-staleness.sh <task-id> — Compare spec modification dates against plan, tasks, and todo-list

Integration

  • Called during sdd-implementer subagent work
  • Triggered by /evolve command
  • Feeds into future /audit runs
  • Use the ask question tool if change requires stakeholder input

© madebyaris, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 3 other files (scripts, references) in .cursor/skills/sdd-evolve of madebyaris/spec-kit-command-cursor.

  • SKILL.md
  • references/changelog-format.md
  • references/propagation-guide.md
  • scripts/check-staleness.sh

Open the folder on GitHubat commit 36b26f9

Compare with similar skills

Sdd Evolve next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Sdd Evolve compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Sdd Evolve this skillmadebyaris/spec-kit-command-cursor198—~562Automated safety check: PassMIT
Vercel Composition Patternssupabase/supabase111k59 repos~726Automated safety check: PassMIT
Finishing a Development Branchobra/superpowers296k5 repos~1.9kAutomated safety check: PassMIT
Typescript Advanced Typesrolling-scopes/rsschool-app10k25 repos~4.2kAutomated safety check: PassMPL-2.0
PR Babysitteropeninterpreter/openinterpreter69k3 repos~4.2kAutomated safety check: PassApache-2.0
Code Review ChecklistshareAI-lab/learn-claude-code78k5 repos~1.1kAutomated safety check: PassMIT

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More from madebyaris/spec-kit-command-cursor

  • Sdd Implementation

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  • Sdd Research

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  • Sdd Audit

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  • Sdd Planning

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  • Sdd Memory

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    Recall and persist durable project knowledge (decisions, conventions, gotchas, architecture) across SDD sessions.

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Categories

Questions about Sdd Evolve

What does Sdd Evolve do?

Update specifications with discoveries made during development. Sdd Evolve is an agent skill from madebyaris/spec-kit-command-cursor. Update specifications with discoveries made during development.

When should I use Sdd Evolve?

Sdd Evolve fits situations like: implementation reveals new requirements.

How do I install Sdd Evolve in Claude Code?

Run `npx skills add madebyaris/spec-kit-command-cursor --skill sdd-evolve -a claude-code`. Or copy the skill folder (.cursor/skills/sdd-evolve in madebyaris/spec-kit-command-cursor) into .claude/skills/sdd-evolve in your project. Claude Code loads it when a task matches its description.

How do I install Sdd Evolve in Codex?

Run `npx skills add madebyaris/spec-kit-command-cursor --skill sdd-evolve -a codex`. Or copy the skill folder (.cursor/skills/sdd-evolve in madebyaris/spec-kit-command-cursor) into .agents/skills/sdd-evolve in your project. Codex loads it when a task matches its description.

Can I use Sdd Evolve in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add madebyaris/spec-kit-command-cursor --skill sdd-evolve -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/sdd-evolve, .gemini/skills/sdd-evolve, .github/skills/sdd-evolve and .opencode/skills/sdd-evolve in your project.

What does Sdd Evolve need to run?

Going by SKILL.md and its folder, Sdd Evolve needs a shell for the scripts in its folder. Our summary lists: A Bash shell.

Does Sdd Evolve access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Sdd Evolve safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.

What licence does Sdd Evolve use?

Sdd Evolve is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Sdd Evolve use?

About 562 tokens (SKILL.md is roughly 2.2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 1k tokens, read only when the agent opens those files.

What are the alternatives to Sdd Evolve?

Skills that share tags, products or a category with Sdd Evolve: Vercel Composition Patterns (supabase/supabase, 111k stars), Finishing a Development Branch (obra/superpowers, 296k stars), Typescript Advanced Types (rolling-scopes/rsschool-app, 10k stars) and PR Babysitter (openinterpreter/openinterpreter, 69k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Sdd Evolve?

madebyaris (a GitHub user) maintains it in madebyaris/spec-kit-command-cursor, which has 198 GitHub stars. The repository holds 6 skills in this directory. The repository was last updated on June 22, 2026.

Source: madebyaris/spec-kit-command-cursor on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.