Work Issue
joesaby/astro-mermaid
End-to-end workflow for resolving a GitHub issue in astro-mermaid — triages complexity, then runs brainstorm → TDD → implement → docs/spec → code review at the right depth.
Use before TDD in a long-task project — produce feature-level detailed design with interface contracts, algorithm pseudocode, diagrams, and test inventory
Install Long Task Feature Design
$ npx skills add suriyel/longtaskforagent --skill long-task-feature-design -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install suriyel/longtaskforagent long-task-feature-design --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/suriyel/longtaskforagent.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/long-task-feature-design .claude/skills/long-task-feature-design && rm -rf skills-srcUse ~/.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/
Install the "long-task-feature-design" agent skill from https://github.com/suriyel/longtaskforagent/tree/main/skills/long-task-feature-design into .claude/skills/long-task-feature-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "long-task-feature-design", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/suriyel/longtaskforagent/tree/main/skills/long-task-feature-designType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add suriyel/longtaskforagent --skill long-task-feature-design -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install suriyel/longtaskforagent long-task-feature-design --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/suriyel/longtaskforagent.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/long-task-feature-design .agents/skills/long-task-feature-design && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "long-task-feature-design" agent skill from https://github.com/suriyel/longtaskforagent/tree/main/skills/long-task-feature-design into .agents/skills/long-task-feature-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "long-task-feature-design", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add suriyel/longtaskforagent --skill long-task-feature-design -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install suriyel/longtaskforagent long-task-feature-design --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/suriyel/longtaskforagent.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/long-task-feature-design .cursor/skills/long-task-feature-design && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "long-task-feature-design" agent skill from https://github.com/suriyel/longtaskforagent/tree/main/skills/long-task-feature-design into .cursor/skills/long-task-feature-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "long-task-feature-design", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/suriyel/longtaskforagent.git --path skills/long-task-feature-design--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add suriyel/longtaskforagent --skill long-task-feature-design -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install suriyel/longtaskforagent long-task-feature-design --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/suriyel/longtaskforagent.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/long-task-feature-design .gemini/skills/long-task-feature-design && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "long-task-feature-design" agent skill from https://github.com/suriyel/longtaskforagent/tree/main/skills/long-task-feature-design into .gemini/skills/long-task-feature-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "long-task-feature-design", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install suriyel/longtaskforagent long-task-feature-designInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add suriyel/longtaskforagent --skill long-task-feature-design -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/suriyel/longtaskforagent.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/long-task-feature-design .github/skills/long-task-feature-design && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "long-task-feature-design" agent skill from https://github.com/suriyel/longtaskforagent/tree/main/skills/long-task-feature-design into .github/skills/long-task-feature-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "long-task-feature-design", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add suriyel/longtaskforagent --skill long-task-feature-design -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install suriyel/longtaskforagent long-task-feature-design --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/suriyel/longtaskforagent.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/long-task-feature-design .opencode/skills/long-task-feature-design && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "long-task-feature-design" agent skill from https://github.com/suriyel/longtaskforagent/tree/main/skills/long-task-feature-design into .opencode/skills/long-task-feature-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "long-task-feature-design", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
long-task-feature-design- GitHub stars
- 177
- Token cost
- ~2.5k tokens
- SKILL.md length
- 850 words
- Files
- 3 (incl. references)
- Skills in repo
- 17
- Repo updated
- First seen
- Licence
- None found
At a glance
Use before TDD in a long-task project — produce feature-level detailed design with interface contracts, algorithm pseudocode, diagrams, and test inventory
- Works in 4 steps: Gather Path Parameters → Construct SubAgent Prompt → Dispatch SubAgent → …
- Tasks that involve Diagrams
- SKILL.md covers When to Run, Step 1: Gather Path Parameters, Step 2: Construct SubAgent… and Step 3: Dispatch SubAgent, plus 2 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Long Task Feature Design is an agent skill from suriyel/longtaskforagent. Use before TDD in a long-task project — produce feature-level detailed design with interface contracts, algorithm pseudocode, diagrams, and test inventory
Its SKILL.md is about 2.5k tokens, which your agent loads only when the skill is triggered. The skill folder holds 3 other files, including reference files (for example `references/feature-design-execution.md` and `references/feature-design-template.md`).
It sits in Testing & QA, covering Diagrams and Test-driven development.
When your agent uses it
- Tasks that involve Diagrams
- Tasks that involve Test-driven development
Example prompts
- “/long-task-feature-design”
Workflow steps
4 steps, taken from the step headings in SKILL.md.
- Gather Path Parameters
- Construct SubAgent Prompt
- Dispatch SubAgent
- Parse Result
What it can do on your machine
Read from SKILL.md and the folder at commit ca67fe1. 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
No scripts in the folder and no shell commands in SKILL.md.
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
Long Task Feature Design loads about 2.5k tokens when it runs, and up to ~10k if it reads all its reference files. Until then it costs about 45 tokens; SKILL.md has 850 words of instructions outside code blocks.
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); files beside SKILL.md are not scanned.
SKILL.md
Without a licence we can't republish the file, so here is its outline and opening line. It has 850 words (~2,485 tokens).
“Delegate feature detailed design production to a SubAgent with fresh context. The main Agent only dispatches and parses the structured result — it never reads design/SRS/UCD document sections or writes the design document directly.”
- name
- long-task-feature-design
Files
SKILL.md and 2 other files (references) in skills/long-task-feature-design of suriyel/longtaskforagent.
- SKILL.md
- references/feature-design-execution.md
- references/feature-design-template.md
Open the folder on GitHubat commit ca67fe1
Compare with similar skills
Long Task Feature Design 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.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Long Task Feature Design this skillsuriyel/longtaskforagent | 177 | — | ~2.5k | Automated safety check: Pass | None | |
| Work Issuejoesaby/astro-mermaid | 123 | — | ~891 | Automated safety check: Pass | MIT | |
| Rust TDD Workflowrtk-ai/rtk | 83k | — | ~753 | Automated safety check: Notes | Apache-2.0 | |
| RTK Filter TDD in Rustrtk-ai/rtk | 83k | — | ~1.9k | Automated safety check: Notes | Apache-2.0 | |
| Test Guidelinesgetsentry/sentry-dart | 873 | — | ~3.1k | Automated safety check: Pass | MIT | |
| Evidence-First Development LoopAmazingAng/old-coder | 749 | — | ~5.4k | Automated safety check: Notes | MIT |
Similar skills
Rust TDD Workflow
rtk-ai/rtk
Enforces red-green-refactor for Rust work, with idiomatic test patterns, a naming convention and a pre-commit gate of cargo fmt, clippy and test.
RTK Filter TDD in Rust
rtk-ai/rtk
Enforces red-green-refactor for new RTK output filters in Rust, using real captured fixtures, snapshot tests with insta and token-savings assertions.
- Official
Test Guidelines
getsentry/sentry-dart
Enforce Sentry Dart/Flutter SDK test conventions for naming, structure, and fixtures.
Evidence-First Development Loop
AmazingAng/old-coder
Replaces line-by-line code review with an approved executable spec and a gauntlet of tests, types, coverage, and mutation checks the code must survive.
Agent Harness Testing Methodology
huiliyi37/Tianshu-harness
Guides an agent through probing an unfamiliar project's test setup, then choosing a red-light-first testing strategy matched to the task type.
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Categories
Questions about Long Task Feature Design
What does Long Task Feature Design do?
Use before TDD in a long-task project — produce feature-level detailed design with interface contracts, algorithm pseudocode, diagrams, and test inventory. Long Task Feature Design is an agent skill from suriyel/longtaskforagent.
When should I use Long Task Feature Design?
Long Task Feature Design fits situations like: tasks that involve Diagrams; tasks that involve Test-driven development.
How do I install Long Task Feature Design in Claude Code?
Run `npx skills add suriyel/longtaskforagent --skill long-task-feature-design -a claude-code`. Or copy the skill folder (skills/long-task-feature-design in suriyel/longtaskforagent) into .claude/skills/long-task-feature-design in your project. Claude Code loads it when a task matches its description.
How do I install Long Task Feature Design in Codex?
Run `npx skills add suriyel/longtaskforagent --skill long-task-feature-design -a codex`. Or copy the skill folder (skills/long-task-feature-design in suriyel/longtaskforagent) into .agents/skills/long-task-feature-design in your project. Codex loads it when a task matches its description.
Can I use Long Task Feature Design 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 suriyel/longtaskforagent --skill long-task-feature-design -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/long-task-feature-design, .gemini/skills/long-task-feature-design, .github/skills/long-task-feature-design and .opencode/skills/long-task-feature-design in your project.
What does Long Task Feature Design need to run?
SKILL.md names no scripts, command-line tools or credentials: Long Task Feature Design is instructions for the agent only.
Does Long Task Feature Design 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 Long Task Feature Design 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. Review the folder before installing.
What licence does Long Task Feature Design use?
No licence was found for Long Task Feature Design or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Long Task Feature Design use?
About 2.5k tokens (SKILL.md is roughly 9.9k 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 7.6k tokens, read only when the agent opens those files.
What are the alternatives to Long Task Feature Design?
Skills that share tags, products or a category with Long Task Feature Design: Work Issue (joesaby/astro-mermaid, 123 stars), Rust TDD Workflow (rtk-ai/rtk, 83k stars), RTK Filter TDD in Rust (rtk-ai/rtk, 83k stars) and Test Guidelines (getsentry/sentry-dart, 873 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Long Task Feature Design?
suriyel (a GitHub user) maintains it in suriyel/longtaskforagent, which has 177 GitHub stars. The repository holds 17 skills in this directory. The repository was last updated on June 23, 2026.
Source: suriyel/longtaskforagent on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.