Use Case Writer
phucnt-bazone-vietnam/use-case-writer
Generate Use Case specifications in English Markdown following the IT BA standard 13-field template (Karl Wiegers / IIBA).
Generate a market requirements document (MRD) from a product idea and save it as Markdown under the current project's markdown/ directory.
$ npx skills add digoal/blog --skill write-mrd -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install digoal/blog write-mrd --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/digoal/blog.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/write-mrd .claude/skills/write-mrd && 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 "write-mrd" agent skill from https://github.com/digoal/blog/tree/master/skills/write-mrd into .claude/skills/write-mrd/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "write-mrd", 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/digoal/blog/tree/master/skills/write-mrdType 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 digoal/blog --skill write-mrd -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install digoal/blog write-mrd --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/digoal/blog.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/write-mrd .agents/skills/write-mrd && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "write-mrd" agent skill from https://github.com/digoal/blog/tree/master/skills/write-mrd into .agents/skills/write-mrd/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "write-mrd", 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 digoal/blog --skill write-mrd -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install digoal/blog write-mrd --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/digoal/blog.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/write-mrd .cursor/skills/write-mrd && 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 "write-mrd" agent skill from https://github.com/digoal/blog/tree/master/skills/write-mrd into .cursor/skills/write-mrd/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "write-mrd", 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/digoal/blog.git --path skills/write-mrd--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 digoal/blog --skill write-mrd -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install digoal/blog write-mrd --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/digoal/blog.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/write-mrd .gemini/skills/write-mrd && 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 "write-mrd" agent skill from https://github.com/digoal/blog/tree/master/skills/write-mrd into .gemini/skills/write-mrd/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "write-mrd", 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 digoal/blog write-mrdInstalls 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 digoal/blog --skill write-mrd -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/digoal/blog.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/write-mrd .github/skills/write-mrd && 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 "write-mrd" agent skill from https://github.com/digoal/blog/tree/master/skills/write-mrd into .github/skills/write-mrd/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "write-mrd", 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 digoal/blog --skill write-mrd -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install digoal/blog write-mrd --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/digoal/blog.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/write-mrd .opencode/skills/write-mrd && 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 "write-mrd" agent skill from https://github.com/digoal/blog/tree/master/skills/write-mrd into .opencode/skills/write-mrd/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "write-mrd", 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.
write-mrdGenerate a market requirements document (MRD) from a product idea and save it as Markdown under the current project's markdown/ directory.
Write Mrd is an agent skill from digoal/blog. Generate a market requirements document (MRD) from a product idea and save it as Markdown under the current project's markdown/ directory. Use when the user asks to write, draft, create, produce, or refine an MRD, market requirements document, product opportunity document, market demand analysis, product idea validation document, or asks for "写 MRD", "市场需求文档", "产品立项文档", "产品机会分析", especially when input is only an idea and the output should be structured, visual, and decision-oriented.
Its SKILL.md is about 1.2k tokens, which your agent loads only when the skill is triggered. The skill folder holds 6 other files, including reference files and assets (for example `agents/openai.yaml`, `assets/mrd-template.md` and `references/mrd-playbook.md`).
It sits in Product & Project Management, covering PRD writing and Markdown. The repository describes itself as: AI,Opensource,Database,Business,Finance,Minds. git clone --depth 1 https://github.com/digoal/blog. The licence is GPL-2.0.
6 steps, taken from the first numbered list in SKILL.md.
Read from SKILL.md and the folder at commit 69fb793. It shows what the files ask for, not the result of running them.
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.
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.
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Write Mrd loads about 1.2k tokens when it runs, and up to ~2.6k if it reads all its reference files. Until then it costs about 125 tokens; SKILL.md has 584 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.
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.
The full file from digoal/blog at commit 69fb793, republished under its GPL-2.0 licence (© digoal). 584 words, ~1,193 tokens.
.claude/skills/write-mrd/SKILL.md (or your agent's skills folder). This skill also uses 3 other files; get the full folder from GitHub.Turn a product idea into a decision-ready MRD. The MRD must prove why the opportunity is worth pursuing before drifting into PRD-level feature details.
Default output: a Markdown file saved to the current project's markdown/ directory. Create the directory if missing.
Accept any of these:
If the idea is understandable but incomplete, proceed and mark missing facts as Assumptions or To Validate. Ask a question only when the product idea, target user, and use scenario are all too ambiguous to infer.
Normalize the idea
Choose MRD depth
Build the MRD argument
references/mrd-playbook.md for the writing logic.assets/mrd-template.md as the output skeleton when useful.Add useful visuals
.svg file in the same markdown/ directory and reference it from the MRD with .Save files
markdown/<产品或主题>-MRD-<YYYYMMDD>.mdmarkdown/<product-or-topic>-mrd-<YYYYMMDD>.mdmarkdown/<same-prefix>-figure-1.svg, figure-2.svg, etc.Self-check before final response
markdown/; any SVG references point to existing files.For current market size, regulations, competitor claims, pricing, recent product launches, or funding/news, browse and cite reliable sources. If browsing is unavailable or unnecessary, write "market data pending verification" rather than inventing numbers.
Keep the final reply short:
© digoal, GPL-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
SKILL.md and 3 other files (references, assets) in skills/write-mrd of digoal/blog.
Open the folder on GitHubat commit 69fb793
Write Mrd 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 |
|---|---|---|---|---|---|---|
| Write Mrd this skilldigoal/blog | 8.6k | — | ~1.2k | Automated safety check: Pass | GPL-2.0 | |
| Use Case Writerphucnt-bazone-vietnam/use-case-writer | 142 | — | ~4.1k | Automated safety check: Pass | MIT | |
| CCPM Project Managementautomazeio/ccpm | 8.4k | — | ~1.1k | Automated safety check: Pass | MIT | |
| Ralph Tui Create Beadssubsy/ralph-tui | 2.5k | 1 repos | ~2.6k | Automated safety check: Pass | MIT | |
| Trellis Brainstormanjiemo/SunnyBeach | 178 | 7 repos | ~4k | Automated safety check: Pass | Apache-2.0 | |
| Adversarial Speczscole/adversarial-spec | 556 | 1 repos | ~8.3k | Automated safety check: Notes | MIT |
phucnt-bazone-vietnam/use-case-writer
Generate Use Case specifications in English Markdown following the IT BA standard 13-field template (Karl Wiegers / IIBA).
automazeio/ccpm
Runs a spec-driven workflow from PRD to epic to GitHub issues to parallel agents, with status, standup and blocked-work reports from bundled scripts.
subsy/ralph-tui
Convert PRDs to beads for ralph-tui execution. An agent skill from subsy/ralph-tui.
anjiemo/SunnyBeach
Guides collaborative requirements discovery before implementation.
zscole/adversarial-spec
Iteratively refine a product spec by debating with multiple LLMs (GPT, Gemini, Grok, etc.) until all models agree.
subsy/ralph-tui
Convert PRDs to beads for ralph-tui execution using beads-rust (br CLI).
digoal/blog
三层审查模型,逐段逐句验证文章真伪、证据链与逻辑结构。Use when the user asks to fact-check, verify, audit, or evaluate the credibility of an article, essay, report, opinion piece, social-media post, or any written claim —…
digoal/blog
Find latent bugs in a local PostgreSQL source tree (RELxxSTABLE branch or HEAD) the way a core hacker does: build a heavily-poisoned debug instance (cassert + cache-discard + -O0/-ggdb3 + core…
digoal/blog
Portable digital employee distilled from digoal's personal blog for PostgreSQL, PolarDB, DuckDB, AI+database, vector/RAG, database operations, source-code reading, technical content creation…
digoal/blog
从论文 PDF 文件或论文 PDF URL 生成通俗易懂、图文并茂、带批判性评估的中文 Markdown 解读,并保存到当前项目的 markdown 目录。Use when the user asks to interpret,精读,解读,summarize,explain,analyze, or write an article from an academic paper PDF…
digoal/blog
Analyze a product from documentation, websites, PDFs, articles, release notes, pricing pages, app listings, reviews, filings, or related links; save separate intermediate analyses from seven roles…
digoal/blog
Turn a blog post, article, notes, or any source material into a set of vertical poster images — one cover plus several coherent content slides that explain the core points.
Categories
Generate a market requirements document (MRD) from a product idea and save it as Markdown under the current project's markdown/ directory. Write Mrd is an agent skill from digoal/blog. Generate a market requirements document (MRD) from a product idea and save it as Markdown under the current project's markdown/ directory.
Write Mrd fits situations like: the user asks to write; market requirements document; product opportunity document; market demand analysis.
Run `npx skills add digoal/blog --skill write-mrd -a claude-code`. Or copy the skill folder (skills/write-mrd in digoal/blog) into .claude/skills/write-mrd in your project. Claude Code loads it when a task matches its description.
Run `npx skills add digoal/blog --skill write-mrd -a codex`. Or copy the skill folder (skills/write-mrd in digoal/blog) into .agents/skills/write-mrd in your project. Codex loads it when a task matches its description.
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add digoal/blog --skill write-mrd -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/write-mrd, .gemini/skills/write-mrd, .github/skills/write-mrd and .opencode/skills/write-mrd in your project.
SKILL.md names no scripts, command-line tools or credentials: Write Mrd is instructions for the agent only.
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.
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.
Write Mrd is published under the GPL-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
About 1.2k tokens (SKILL.md is roughly 4.8k 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 1.4k tokens, read only when the agent opens those files.
Skills that share tags, products or a category with Write Mrd: Use Case Writer (phucnt-bazone-vietnam/use-case-writer, 142 stars), CCPM Project Management (automazeio/ccpm, 8.4k stars), Ralph Tui Create Beads (subsy/ralph-tui, 2.5k stars) and Trellis Brainstorm (anjiemo/SunnyBeach, 178 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
digoal (a GitHub user) maintains it in digoal/blog, which has 8,587 GitHub stars. The repository holds 98 skills in this directory. The repository was last updated on September 28, 2026.
Source: digoal/blog on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.