# Build Something People Want

> A worldwide editorial directory of software scored for humans — Twin Scores, not fake star ratings.

This file follows llmstxt.org. Google Search ignores llms.txt (it will not help or harm Google rankings). Other AI systems may use it as a map.

A Twin Score is two editorial numbers from 0 to 100 — one for the human product surface, one for the agent/API surface — assigned by named staff on a public rubric. AggregateRating in JSON-LD is only those staff composites. We do not ship fake UGC reviews.

## When to use this site
- You need editorial Twin Scores, capability matrices, or SKILL.md for famous software products
- You need a CC BY 4.0 dataset of those scores
- You need OpenAPI at /openapi.json and RFC 9457 errors
- You need server-rendered HTML (H1, first-paragraph answer, JSON-LD) even if the visual layer is a 3D canvas

## When not to use this site
- You want crowdsourced star ratings or invented user counts
- You want an MCP server we did not ship
- You want Argentina-only or city-page spam; this catalog is worldwide English

## Key facts
- Editor: Edu Tor (https://buildsomethingpeoplewant.com/authors/edu-tor)
- Twin sites share product slugs. People = magazine prose. Agents = matrices, SKILL.md, dataset.
- Methodology: https://buildsomethingpeoplewant.com/methodology
- Rubric: https://buildsomethingpeoplewant.com/scorecard
- Dataset (CC BY 4.0): https://buildsomethingagentswant.com/dataset/twin-scores.json and https://buildsomethingagentswant.com/dataset/twin-scores.csv
- AI crawlers are allowed in /robots.txt (GPTBot, OAI-SearchBot, ClaudeBot, PerplexityBot, Google-Extended, and others)
- Request Accept: text/markdown for a text/markdown; charset=utf-8 representation of canonical pages

## Twin
People: https://buildsomethingpeoplewant.com
Agents: https://buildsomethingagentswant.com
Developer resources: https://buildsomethingagentswant.com/for-agents (title: Build Something Agents Want developer resources)

## Public API
- JSON list: https://buildsomethingpeoplewant.com/api/v1/products
- JSON product: https://buildsomethingpeoplewant.com/api/v1/products/{slug}
- JSON reviews: https://buildsomethingpeoplewant.com/api/v1/reviews
- OpenAPI: https://buildsomethingpeoplewant.com/openapi.json
- API catalog: https://buildsomethingpeoplewant.com/.well-known/api-catalog
- Errors: RFC 9457 application/problem+json with code, detail, and status (400/404/405 on /api/v1/*)

## Key pages
- [Methodology](https://buildsomethingpeoplewant.com/methodology)
- [Twin Score rubric](https://buildsomethingpeoplewant.com/scorecard)
- [Products](https://buildsomethingpeoplewant.com/products)
- [Editorial policy](https://buildsomethingpeoplewant.com/editorial-policy)
- [About](https://buildsomethingpeoplewant.com/about)
- [AI catalog](https://buildsomethingpeoplewant.com/.well-known/ai-catalog.json)
- [OpenAPI](https://buildsomethingpeoplewant.com/openapi.json)
- [JSON API](https://buildsomethingpeoplewant.com/api/v1/products)

## Products
- [ChatGPT](https://buildsomethingpeoplewant.com/products/chatgpt): Twin Score human 88, agent 90
- [Claude](https://buildsomethingpeoplewant.com/products/claude): Twin Score human 86, agent 92
- [Gemini](https://buildsomethingpeoplewant.com/products/gemini): Twin Score human 82, agent 88
- [Grok](https://buildsomethingpeoplewant.com/products/grok): Twin Score human 74, agent 70
- [Perplexity](https://buildsomethingpeoplewant.com/products/perplexity): Twin Score human 85, agent 78
- [Microsoft Copilot](https://buildsomethingpeoplewant.com/products/microsoft-copilot): Twin Score human 80, agent 76
- [Midjourney](https://buildsomethingpeoplewant.com/products/midjourney): Twin Score human 84, agent 42
- [Runway](https://buildsomethingpeoplewant.com/products/runway): Twin Score human 81, agent 64
- [ElevenLabs](https://buildsomethingpeoplewant.com/products/elevenlabs): Twin Score human 83, agent 88
- [Character.AI](https://buildsomethingpeoplewant.com/products/character-ai): Twin Score human 72, agent 35
- [Cursor](https://buildsomethingpeoplewant.com/products/cursor): Twin Score human 90, agent 84
- [GitHub](https://buildsomethingpeoplewant.com/products/github): Twin Score human 91, agent 94
- [GitHub Copilot](https://buildsomethingpeoplewant.com/products/github-copilot): Twin Score human 84, agent 72
- [Visual Studio Code](https://buildsomethingpeoplewant.com/products/vs-code): Twin Score human 93, agent 80
- [GitLab](https://buildsomethingpeoplewant.com/products/gitlab): Twin Score human 82, agent 90
- [Vercel](https://buildsomethingpeoplewant.com/products/vercel): Twin Score human 88, agent 87
- [Netlify](https://buildsomethingpeoplewant.com/products/netlify): Twin Score human 80, agent 82
- [Linear](https://buildsomethingpeoplewant.com/products/linear): Twin Score human 92, agent 86
- [Jira](https://buildsomethingpeoplewant.com/products/jira): Twin Score human 61, agent 84
- [Replit](https://buildsomethingpeoplewant.com/products/replit): Twin Score human 83, agent 75
- [Notion](https://buildsomethingpeoplewant.com/products/notion): Twin Score human 87, agent 83
- [Coda](https://buildsomethingpeoplewant.com/products/coda): Twin Score human 78, agent 74
- [Airtable](https://buildsomethingpeoplewant.com/products/airtable): Twin Score human 84, agent 88
- [Figma](https://buildsomethingpeoplewant.com/products/figma): Twin Score human 94, agent 77
- [Framer](https://buildsomethingpeoplewant.com/products/framer): Twin Score human 86, agent 58
- [Webflow](https://buildsomethingpeoplewant.com/products/webflow): Twin Score human 85, agent 72
- [Canva](https://buildsomethingpeoplewant.com/products/canva): Twin Score human 89, agent 63
- [Adobe Creative Cloud](https://buildsomethingpeoplewant.com/products/adobe-creative-cloud): Twin Score human 83, agent 60
- [Adobe Firefly](https://buildsomethingpeoplewant.com/products/adobe-firefly): Twin Score human 79, agent 70
- [Superhuman](https://buildsomethingpeoplewant.com/products/superhuman): Twin Score human 88, agent 40
- [Slack](https://buildsomethingpeoplewant.com/products/slack): Twin Score human 86, agent 90
- [Microsoft Teams](https://buildsomethingpeoplewant.com/products/microsoft-teams): Twin Score human 73, agent 82
- [Zoom](https://buildsomethingpeoplewant.com/products/zoom): Twin Score human 84, agent 80
- [Loom](https://buildsomethingpeoplewant.com/products/loom): Twin Score human 87, agent 55
- [Discord](https://buildsomethingpeoplewant.com/products/discord): Twin Score human 85, agent 88
- [Cal.com](https://buildsomethingpeoplewant.com/products/cal-com): Twin Score human 82, agent 85
- [Calendly](https://buildsomethingpeoplewant.com/products/calendly): Twin Score human 84, agent 70
- [Grammarly](https://buildsomethingpeoplewant.com/products/grammarly): Twin Score human 86, agent 48
- [Stripe](https://buildsomethingpeoplewant.com/products/stripe): Twin Score human 84, agent 96
- [Supabase](https://buildsomethingpeoplewant.com/products/supabase): Twin Score human 86, agent 93

## Articles
- [Human vs agent software surfaces in 2026: original Twin Score research](https://buildsomethingpeoplewant.com/blog/human-vs-agent-software-surfaces-2026)
- [How the Twin Score rubric actually works](https://buildsomethingpeoplewant.com/blog/how-twin-score-rubric-works)
- [Fake UGC is an SEO tactic that this directory refuses](https://buildsomethingpeoplewant.com/blog/fake-ugc-editorial-policy)
- [The capability matrix agents actually need](https://buildsomethingpeoplewant.com/blog/agent-capability-matrix-2026)
- [What is-agentic publishing means for a product directory](https://buildsomethingpeoplewant.com/blog/is-agentic-publishing-directory)
- [ChatGPT vs Claude vs Gemini vs Perplexity vs Grok for real work in 2026](https://buildsomethingpeoplewant.com/blog/chatgpt-vs-claude-vs-gemini-2026)
- [Human advantage versus agent advantage: a gap table from 72 products](https://buildsomethingpeoplewant.com/blog/twin-score-gap-table-2026)

## Optional
- Full map: https://buildsomethingpeoplewant.com/llms-full.txt
- Dataset: https://buildsomethingagentswant.com/dataset/twin-scores.json
- OpenAPI: https://buildsomethingpeoplewant.com/openapi.json
- Other twin: https://buildsomethingagentswant.com