Figure
vectorize-io/hindsight
Draw an animated figure (boxes, arrows, moving data) as one self-contained SVG for a GitHub README, PR, issue or blog post.
Research a person's public track record and give a short credibility assessment.
Install Who Is This
$ npx skills add davidondrej/skills --skill who-is-this -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install davidondrej/skills who-is-this --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/davidondrej/skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/research-and-web/who-is-this .claude/skills/who-is-this && 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 "who-is-this" agent skill from https://github.com/davidondrej/skills/tree/main/skills/research-and-web/who-is-this into .claude/skills/who-is-this/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "who-is-this", 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/davidondrej/skills/tree/main/skills/research-and-web/who-is-thisType 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 davidondrej/skills --skill who-is-this -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install davidondrej/skills who-is-this --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/davidondrej/skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/research-and-web/who-is-this .agents/skills/who-is-this && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "who-is-this" agent skill from https://github.com/davidondrej/skills/tree/main/skills/research-and-web/who-is-this into .agents/skills/who-is-this/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "who-is-this", 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 davidondrej/skills --skill who-is-this -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install davidondrej/skills who-is-this --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/davidondrej/skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/research-and-web/who-is-this .cursor/skills/who-is-this && 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 "who-is-this" agent skill from https://github.com/davidondrej/skills/tree/main/skills/research-and-web/who-is-this into .cursor/skills/who-is-this/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "who-is-this", 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/davidondrej/skills.git --path skills/research-and-web/who-is-this--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 davidondrej/skills --skill who-is-this -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install davidondrej/skills who-is-this --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/davidondrej/skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/research-and-web/who-is-this .gemini/skills/who-is-this && 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 "who-is-this" agent skill from https://github.com/davidondrej/skills/tree/main/skills/research-and-web/who-is-this into .gemini/skills/who-is-this/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "who-is-this", 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 davidondrej/skills who-is-thisInstalls 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 davidondrej/skills --skill who-is-this -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/davidondrej/skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/research-and-web/who-is-this .github/skills/who-is-this && 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 "who-is-this" agent skill from https://github.com/davidondrej/skills/tree/main/skills/research-and-web/who-is-this into .github/skills/who-is-this/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "who-is-this", 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 davidondrej/skills --skill who-is-this -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install davidondrej/skills who-is-this --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/davidondrej/skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/research-and-web/who-is-this .opencode/skills/who-is-this && 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 "who-is-this" agent skill from https://github.com/davidondrej/skills/tree/main/skills/research-and-web/who-is-this into .opencode/skills/who-is-this/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "who-is-this", 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
who-is-this- GitHub stars
- 4.1k
- Token cost
- ~770 tokens
- SKILL.md length
- 283 words
- Files
- 2
- Skills in repo
- 51
- Repo updated
- First seen
- Licence
- MIT
At a glance
Research a person's public track record and give a short credibility assessment.
- Works in 4 steps: GitHub activity. POST… → Last 10 LinkedIn posts. POST… → Deep research. POST /v1/research/deep on… → …
- Explicitly invokes /who-is-this
- SKILL.md covers Seed, Research, What to extract and Output
- Reaches x.com and linkedin.com
What it does
Who Is This is an agent skill from davidondrej/skills. Research a person's public track record and give a short credibility assessment. Use only when the user explicitly invokes /who-is-this.
Its SKILL.md is about 770 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files (for example `agents/openai.yaml`).
It sits in Writing & Content. It works with GitHub. The repository describes itself as: access to david ondrej's personal agent skills. The licence is MIT.
When your agent uses it
- Explicitly invokes /who-is-this
Example prompts
- “/who-is-this”
Workflow steps
4 steps, taken from the first numbered list in SKILL.md.
- GitHub activity. POST /v1/scrape/github/profile with includeRepos: true, plus recent PRs (POST /v1/scrape/github/search, type: "pulls"…
- Last 10 LinkedIn posts. POST /v1/scrape/linkedin/posts, maxItems: 10. Also scrape the LinkedIn profile if you have the slug.
- Deep research. POST /v1/research/deep on who they are, what they have actually done, and whether the public story holds.
- 50 newest X posts. POST /v1/scrape/twitter/search with the handle, sort: "latest", maxItems: 50. Also pull POST /v1/scrape/twitter/user.
What it can do on your machine
Read from SKILL.md and the folder at commit 387c2b8. 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 (its code samples are markdown).
From the folder's file list and the shell code blocks in SKILL.md.
Network
Hosts in commands or code, which the agent is likely to contact:
x.comlinkedin.comgithub.com
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
Who Is This loads about 770 tokens when it runs. Until then it costs about 37 tokens; SKILL.md has 283 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
The full file from davidondrej/skills at commit 387c2b8, republished under its MIT licence (© davidondrej). 283 words, ~770 tokens.
Download SKILL.mdSave it as
.claude/skills/who-is-this/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- who-is-this
- description
- Research a person's public track record and give a short credibility assessment. Use only when the user explicitly invokes /who-is-this.
- disable-model-invocation
- true
- triggers
- user, model
who-is-this
Read the deepapi skill first. All search and scraping goes through DeepAPI. Never use built-in search, fetch, or a browser.
Seed
Accept a name, handle, URL, or profile screenshot. If missing, ask once; never guess a person.
Verify matching bio, company, location, and photo before deeper research. If identity is ambiguous, stop and ask.
Research
Find their X, LinkedIn, and GitHub first (dedicated endpoints, not site: search). Then run these in parallel:
- GitHub activity.
POST /v1/scrape/github/profilewithincludeRepos: true, plus recent PRs (POST /v1/scrape/github/search,type: "pulls",query: "author:<username>",sort: "updated"). - Last 10 LinkedIn posts.
POST /v1/scrape/linkedin/posts,maxItems: 10. Also scrape the LinkedIn profile if you have the slug. - Deep research.
POST /v1/research/deepon who they are, what they have actually done, and whether the public story holds. - 50 newest X posts.
POST /v1/scrape/twitter/searchwith the handle,sort: "latest",maxItems: 50. Also pullPOST /v1/scrape/twitter/user.
Follow DeepAPI polling. If a platform is missing or private, say so. Do not invent a profile.
What to extract
Keep only the 3 facts that best explain who the person is; omit the rest.
- Real track record beats bio. Jobs, products, exits, code, talks.
- Self-reported numbers stay labeled "their claim". Verified numbers say "verified".
- Include posting topics only if they change the verdict.
- Choose the archetype their track record supports: builder, marketer, operator, researcher, grifter, investor, recruiter, hobbyist, etc.
Ignore congrats, logo spam, paid "king of X" press, and follower-count flexing.
Output
Maximum 100 words after the header. Use short, plain-English sentences. No tables, sub-bullets, tweet dumps, or research narration.
**Full name** — [@handle](https://x.com/handle) · [LinkedIn](url) · [GitHub](url) · [Site](url)
**Who:** One sentence. Where they are and what they do now.
**Track record:** Max 3 bullets. Only what explains who they are. Dates. Label claims vs verified.
**Verdict:** One line. The archetype, whether the story holds, and why.Fictional example:
**Jane Doe** — [@janedoe](https://x.com/janedoe) · [LinkedIn](https://linkedin.com/in/janedoe) · [GitHub](https://github.com/janedoe)
**Who:** Berlin solo founder of Acme, an open-source Postgres proxy.
**Track record:**
- 2024–now: Acme founder. 2.1K stars (verified); no revenue (her claim).
- 2019–2024: Backend engineer at Zalando and N26.
- Claims "50K users"; unverified.
**Verdict:** Solo builder with real code; user numbers remain unverified.Omit a missing profile link instead of faking it.
Follow-ups: 1–3 sentences. Re-scrape only if the first pass missed that platform.
© davidondrej, 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 1 other file in skills/research-and-web/who-is-this of davidondrej/skills.
- SKILL.md
- agents/openai.yaml
Open the folder on GitHubat commit 387c2b8
Compare with similar skills
Who Is This 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 |
|---|---|---|---|---|---|---|
| Who Is This this skilldavidondrej/skills | 4.1k | — | ~770 | Automated safety check: Pass | MIT | |
| Figurevectorize-io/hindsight | 48k | — | ~1.9k | Automated safety check: Pass | MIT | |
| News Aggregator Skillcclank/news-aggregator-skill | 1.3k | — | ~2.1k | Automated safety check: Pass | None | |
| Content Writerdageno-agents/geo-content-writer | 215 | — | ~1.2k | Automated safety check: Pass | MIT | |
| Ghostwritersuperzhang21/ghostwriter | 304 | — | ~759 | Automated safety check: Pass | CC-BY-NC-ND-4.0 | |
| Release Blog Drafterobot-platform/obot | 1.1k | — | ~4.6k | Automated safety check: Pass | MIT |
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Questions about Who Is This
What does Who Is This do?
Research a person's public track record and give a short credibility assessment. Who Is This is an agent skill from davidondrej/skills. Research a person's public track record and give a short credibility assessment.
When should I use Who Is This?
Who Is This fits situations like: explicitly invokes /who-is-this.
How do I install Who Is This in Claude Code?
Run `npx skills add davidondrej/skills --skill who-is-this -a claude-code`. Or copy the skill folder (skills/research-and-web/who-is-this in davidondrej/skills) into .claude/skills/who-is-this in your project. Claude Code loads it when a task matches its description.
How do I install Who Is This in Codex?
Run `npx skills add davidondrej/skills --skill who-is-this -a codex`. Or copy the skill folder (skills/research-and-web/who-is-this in davidondrej/skills) into .agents/skills/who-is-this in your project. Codex loads it when a task matches its description.
Can I use Who Is This 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 davidondrej/skills --skill who-is-this -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/who-is-this, .gemini/skills/who-is-this, .github/skills/who-is-this and .opencode/skills/who-is-this in your project.
What does Who Is This need to run?
SKILL.md names no scripts, command-line tools or credentials: Who Is This is instructions for the agent only.
Does Who Is This access the network?
SKILL.md names 3 domains. In commands or code: x.com, linkedin.com and github.com; the agent is likely to contact these when it follows the instructions. This is read from the text; nothing was executed.
Is Who Is This 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 Who Is This use?
Who Is This 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 Who Is This use?
About 770 tokens (SKILL.md is roughly 3.1k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Who Is This?
Skills that share tags, products or a category with Who Is This: Figure (vectorize-io/hindsight, 48k stars), News Aggregator Skill (cclank/news-aggregator-skill, 1.3k stars), Content Writer (dageno-agents/geo-content-writer, 215 stars) and Ghostwriter (superzhang21/ghostwriter, 304 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Who Is This?
davidondrej (a GitHub user) maintains it in davidondrej/skills, which has 4,112 GitHub stars. The repository holds 51 skills in this directory. The repository was last updated on October 10, 2026.
Source: davidondrej/skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.