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How React’s scores are calculated

The full audit trail, recomputed from the verdict data at build time through the same code that produced the leaderboard: verdict × quality × story weight per cell, cells sum to dimension scores, dimensions blend into the PA Score. Every number on the product page is reproducible from this page alone; for why the formula looks like this, see the methodology.

verdict factors: full ×1.0 · partial ×0.6 · disputed ×0.3 · none ×0.0 · n/a excluded from both sides · cell points = weight × quality × factor · cell max = weight × 10

PA Score37/100

Agent-ready 41.1 × 0.30 = 12.33

API quality 0.0 × 0.20 = 0.00

Openness 68.0 × 0.20 = 13.60

Built-in AI n/a — excluded, its ×0.15 weight renormalized away

Automation n/a — excluded, its ×0.15 weight renormalized away

(12.33 + 0.00 + 13.60) ÷ (0.30 + 0.20 + 0.20) = 25.93 ÷ 0.70 = 37.0 — weights renormalized over the scored components

Scores are stored to 1 decimal; the product page’s pills round to whole numbers for display. Each dimension below shows the stories, verdicts, and cited evidence behind its number.

Agent-ready41.1/100×0.30 of the PA blend

Outside-in: can YOUR agent reach and drive this product — API, MCP, CLI, headless runs, agent docs.

Point an agent at llms.txt or agent-oriented docsweight 2

2 (weight) × 9 (quality) × 1.0 (full) = 18.0 of 20 max

  • [probe] https://react.dev/llms.txtPROBE llms.txt: HTTP 200 at https://react.dev/llms.txt # React Documentation > The library for web and native user interfaces. ## Learn React ### GET STARTED #### Quick St

Run the product headlessly / in CI for automationweight 2

n/a — not applicable to this product: excluded from numerator and denominator

no evidence cited — the verdict rests on absence of evidence, re-checked on refresh

Plug MCP servers into this product so it can use their toolsweight 3

n/a — not applicable to this product: excluded from numerator and denominator

no evidence cited — the verdict rests on absence of evidence, re-checked on refresh

Connect an agent via an official MCP serverweight 3

n/a — not applicable to this product: excluded from numerator and denominator

no evidence cited — the verdict rests on absence of evidence, re-checked on refresh

Use an official CLIweight 2

2 (weight) × 0 (quality) × 0.0 (none) = 0.0 of 20 max

no evidence cited — the verdict rests on absence of evidence, re-checked on refresh

Drive the product through a documented public APIweight 3

3 (weight) × 6 (quality) × 0.6 (partial) = 10.8 of 30 max

  • [claimed-docs] https://react.devYou don’t have to build your whole page in React. Add React to your existing HTML page, and render interactive React components anywhere on it.
  • [claimed-docs] https://react.devThis markup syntax is called JSX. It is a JavaScript syntax extension popularized by React.
  • [claimed-docs] https://react.devYou can pass them new data in response to an interaction, like when the user types into an input. React will then update the screen to match the new data.
  • [github] https://github.com/facebook/reactBuild encapsulated components that manage their own state, then compose them to make complex UIs.
  • [probe] https://react.dev/llms.txtPROBE llms.txt: HTTP 200 at https://react.dev/llms.txt # React Documentation > The library for web and native user interfaces. ## Learn React ### GET STARTED #### Quick St
  • [probe] https://react.dev/openapi.jsonPROBE openapi: all candidate paths 404 (https://react.dev/openapi.json, https://react.dev/swagger.json, https://react.dev/api/openapi.json, https://react.dev/.well-known/openapi.json)

Issue scoped/least-privilege API credentials for an agentweight 2

n/a — not applicable to this product: excluded from numerator and denominator

no evidence cited — the verdict rests on absence of evidence, re-checked on refresh

Build against official SDKsweight 2

n/a — not applicable to this product: excluded from numerator and denominator

no evidence cited — the verdict rests on absence of evidence, re-checked on refresh

Subscribe to events via webhooksweight 2

n/a — not applicable to this product: excluded from numerator and denominator

no evidence cited — the verdict rests on absence of evidence, re-checked on refresh

Agent-ready = 28.8 ÷ 70 × 100 = 41.1

API quality0.0/100×0.20 of the PA blend

The programmable surface once an agent is there — machine-readable spec, interactive docs, sandbox, versioning discipline.

Explore an interactive API reference with runnable examplesweight 2

2 (weight) × 0 (quality) × 0.0 (none) = 0.0 of 20 max

no evidence cited — the verdict rests on absence of evidence, re-checked on refresh

Download a machine-readable API spec (OpenAPI or equivalent)weight 2

n/a — not applicable to this product: excluded from numerator and denominator

  • [probe] https://react.dev/openapi.jsonPROBE openapi: all candidate paths 404 (https://react.dev/openapi.json, https://react.dev/swagger.json, https://react.dev/api/openapi.json, https://react.dev/.well-known/openapi.json)

Test against a sandbox environment without touching production dataweight 1

n/a — not applicable to this product: excluded from numerator and denominator

no evidence cited — the verdict rests on absence of evidence, re-checked on refresh

Rely on versioned APIs with a documented deprecation policyweight 2

2 (weight) × 0 (quality) × 0.0 (none) = 0.0 of 20 max

no evidence cited — the verdict rests on absence of evidence, re-checked on refresh

API quality = 0.0 ÷ 40 × 100 = 0.0

Openness68.0/100×0.20 of the PA blend

Can you leave, inspect, or self-host — data export, open source, portability.

Do everything through the API that I can do in the UIweight 2

n/a — not applicable to this product: excluded from numerator and denominator

no evidence cited — the verdict rests on absence of evidence, re-checked on refresh

Export all of my data in open formats and leaveweight 3

n/a — not applicable to this product: excluded from numerator and denominator

no evidence cited — the verdict rests on absence of evidence, re-checked on refresh

Read the product's source under an open licenseweight 2

2 (weight) × 8 (quality) × 1.0 (full) = 16.0 of 20 max

  • [github] https://github.com/facebook/reactBuild encapsulated components that manage their own state, then compose them to make complex UIs.
  • [community] https://news.ycombinator.com/item?id=15316175It sucks that it took this long, but at the end of the day, they've done the right thing [relicensing React away from BSD+Patents to MIT].
  • [community] https://news.ycombinator.com/item?id=15316175Death to asymmetrical patent clauses! Huge victory for OSS.
  • [community] https://news.ycombinator.com/item?id=9271246The first thing I do now on each Facebook open-source reveal, is to check the PATENTS file for the toxic second paragraph... I can't imagine being able to use this at any decent-sized company with lawyers.

Self-host the core productweight 3

3 (weight) × 6 (quality) × 1.0 (full) = 18.0 of 30 max

  • [github] https://github.com/facebook/reactBuild encapsulated components that manage their own state, then compose them to make complex UIs.
  • [community] https://news.ycombinator.com/item?id=15316175It sucks that it took this long, but at the end of the day, they've done the right thing [relicensing React away from BSD+Patents to MIT].
  • [claimed-docs] https://react.devOn the server, React lets you start streaming HTML while you’re still fetching data, progressively filling in the remaining content before any JavaScript code loads.
  • [github] https://github.com/facebook/reactReact can also render on the server using Node and power mobile apps using React Native.
  • [github] https://github.com/facebook/reactyou can use as little or as much React as you need

Openness = 34.0 ÷ 50 × 100 = 68.0

Built-in AIn/a×0.15 of the PA blend

Inside-out: how agentic the product itself is for its users — built-in assistants, autonomous features.

Get AI-generated insights and suggestions from my data inside the productweight 2

n/a — not applicable to this product: excluded from numerator and denominator

no evidence cited — the verdict rests on absence of evidence, re-checked on refresh

Set up automations that run autonomously in the backgroundweight 2

n/a — not applicable to this product: excluded from numerator and denominator

no evidence cited — the verdict rests on absence of evidence, re-checked on refresh

Delegate tasks to a built-in AI assistant inside the productweight 3

n/a — not applicable to this product: excluded from numerator and denominator

no evidence cited — the verdict rests on absence of evidence, re-checked on refresh

Operate the product with natural-language commandsweight 2

n/a — not applicable to this product: excluded from numerator and denominator

no evidence cited — the verdict rests on absence of evidence, re-checked on refresh

every cell n/a — unscored (not zero), excluded from the blend

Automationn/a×0.15 of the PA blend

Depth of automation primitives — rules, scheduling, bulk operations, webhooks.

Perform bulk operations across many items at onceweight 2

n/a — not applicable to this product: excluded from numerator and denominator

no evidence cited — the verdict rests on absence of evidence, re-checked on refresh

Define rules that trigger actions automatically on eventsweight 3

n/a — not applicable to this product: excluded from numerator and denominator

no evidence cited — the verdict rests on absence of evidence, re-checked on refresh

Schedule recurring jobs or workflowsweight 2

n/a — not applicable to this product: excluded from numerator and denominator

no evidence cited — the verdict rests on absence of evidence, re-checked on refresh

Version, review, and roll back my automationsweight 1

n/a — not applicable to this product: excluded from numerator and denominator

no evidence cited — the verdict rests on absence of evidence, re-checked on refresh

every cell n/a — unscored (not zero), excluded from the blend