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How Stripe Tax’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 Score22/100

Agent-ready 43.3 × 0.30 = 12.99

API quality 11.4 × 0.20 = 2.28

Openness 25.2 × 0.20 = 5.04

Built-in AI 10.7 × 0.15 = 1.60

Automation 0.0 × 0.15 = 0.00

(12.99 + 2.28 + 5.04 + 1.60 + 0.00) ÷ (0.30 + 0.20 + 0.20 + 0.15 + 0.15) = 21.91 ÷ 1.00 = 21.9

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-ready43.3/100×0.30 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) × 8 (quality) × 1.0 (full) = 16.0 of 20 max

  • [probe] https://docs.stripe.com/llms.txtPROBE llms.txt: HTTP 200 at https://docs.stripe.com/llms.txt # Stripe Documentation When installing Stripe packages, always check the npm registry for the latest version rather tha
  • [probe] https://docs.stripe.com/tax.mdPROBE docs-md: HTTP 200 at https://docs.stripe.com/tax.md # Stripe Tax Automate sales tax, VAT, and GST compliance on all your transactions. ## Stripe Tax API for custom paymen
  • [claimed-docs] https://docs.stripe.com/tax.mdCalculate sales tax, VAT, and GST for transactions worldwide, determining tax rates based on product type, customer location, and business location.

Run the product headlessly / in CI for automationweight 2

2 (weight) × 6 (quality) × 0.6 (partial) = 7.2 of 20 max

  • [claimed-docs] https://docs.stripe.com/tax/testing.mdYou can use Stripe Tax in a sandbox environment to preview automatic tax calculation behavior for different tax settings.
  • [claimed-docs] https://docs.stripe.com/tax/zero-tax.mdThe API returns the reason for a tax result in the taxability_reason field.
  • [probe] https://docs.stripe.com/stripe-cliofficial CLI documented at https://docs.stripe.com/stripe-cli
  • [claimed-docs] https://docs.stripe.com/tax/reports.mdItemized exports contain a detailed view of the line item level tax breakdown for every transaction.

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

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

  • [probe] https://docs.stripe.com/mcpofficial MCP server documented at https://docs.stripe.com/mcp

Use an official CLIweight 2

2 (weight) × 7 (quality) × 1.0 (full) = 14.0 of 20 max

  • [probe] https://docs.stripe.com/stripe-cliofficial CLI documented at https://docs.stripe.com/stripe-cli

Drive the product through a documented public APIweight 3

3 (weight) × 8 (quality) × 1.0 (full) = 24.0 of 30 max

  • [claimed-docs] https://docs.stripe.com/tax.mdCalculate sales tax, VAT, and GST for transactions worldwide, determining tax rates based on product type, customer location, and business location.
  • [claimed-docs] https://docs.stripe.com/tax/standalone-tax-api.mdTo calculate tax on shipping costs, use the `shipping_cost` parameter
  • [claimed-docs] https://docs.stripe.com/tax/standalone-tax-api.mdIf you provide your customer’s IP address, we geolocate it and use that location as your customer’s location. Use this to show your customer a tax estimate before they provide their postal address.
  • [claimed-docs] https://docs.stripe.com/tax/calculating.mdIf your business ships goods from locations other than your head office, you can provide a ship-from address to calculate tax based on the actual shipping origin.
  • [claimed-docs] https://docs.stripe.com/tax/testing.mdYou can use Stripe Tax in a sandbox environment to preview automatic tax calculation behavior for different tax settings.
  • [claimed-docs] https://docs.stripe.com/tax/zero-tax.mdThe API returns the reason for a tax result in the taxability_reason field.
  • [probe] https://docs.stripe.com/tax.mdPROBE docs-md: HTTP 200 at https://docs.stripe.com/tax.md # Stripe Tax Automate sales tax, VAT, and GST compliance on all your transactions. ## Stripe Tax API for custom paymen
  • [probe] https://docs.stripe.com/openapi.jsonPROBE openapi: all candidate paths 404 (https://docs.stripe.com/openapi.json, https://docs.stripe.com/swagger.json, https://docs.stripe.com/api/openapi.json, https://docs.stripe.com/.well-known/openapi.json)
  • [community] https://hn.algolia.com/api/v1/items/27459712Especially as a EU business owner, I previously had to sync every VAT tax rate possible... Stripe tax does all of that automatically, based on the customer full address and VAT numbers.

Issue scoped/least-privilege API credentials for an agentweight 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

Build against official SDKsweight 2

2 (weight) × 5 (quality) × 0.6 (partial) = 6.0 of 20 max

  • [probe] https://docs.stripe.com/llms.txtPROBE llms.txt: HTTP 200 at https://docs.stripe.com/llms.txt # Stripe Documentation When installing Stripe packages, always check the npm registry for the latest version rather tha
  • [claimed-docs] https://docs.stripe.com/tax.mdCalculate sales tax, VAT, and GST for transactions worldwide, determining tax rates based on product type, customer location, and business location.
  • [claimed-docs] https://docs.stripe.com/tax/standalone-tax-api.mdTo calculate tax on shipping costs, use the `shipping_cost` parameter

Subscribe to events via webhooksweight 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

Agent-ready = 78.0 ÷ 180 × 100 = 43.3

API quality11.4/100×0.20 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

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

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

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

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

Test against a sandbox environment without touching production dataweight 1

1 (weight) × 8 (quality) × 1.0 (full) = 8.0 of 10 max

  • [claimed-docs] https://docs.stripe.com/tax/testing.mdYou can use Stripe Tax in a sandbox environment to preview automatic tax calculation behavior for different tax settings.
  • [probe] https://docs.stripe.com/stripe-cliofficial CLI documented at https://docs.stripe.com/stripe-cli

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 = 8.0 ÷ 70 × 100 = 11.4

Openness25.2/100×0.20 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

2 (weight) × 6 (quality) × 0.6 (partial) = 7.2 of 20 max

  • [claimed-docs] https://docs.stripe.com/tax.mdCalculate sales tax, VAT, and GST for transactions worldwide, determining tax rates based on product type, customer location, and business location.
  • [claimed-docs] https://docs.stripe.com/tax/standalone-tax-api.mdTo calculate tax on shipping costs, use the `shipping_cost` parameter
  • [claimed-docs] https://docs.stripe.com/tax/standalone-tax-api.mdIf you provide your customer’s IP address, we geolocate it and use that location as your customer’s location. Use this to show your customer a tax estimate before they provide their postal address.
  • [claimed-docs] https://docs.stripe.com/tax/calculating.mdIf your business ships goods from locations other than your head office, you can provide a ship-from address to calculate tax based on the actual shipping origin.
  • [claimed-docs] https://docs.stripe.com/tax/testing.mdYou can use Stripe Tax in a sandbox environment to preview automatic tax calculation behavior for different tax settings.
  • [claimed-docs] https://docs.stripe.com/tax/reports.mdItemized exports contain a detailed view of the line item level tax breakdown for every transaction.
  • [claimed-docs] https://docs.stripe.com/tax/zero-tax.mdThe API returns the reason for a tax result in the taxability_reason field.
  • [claimed-docs] https://docs.stripe.com/taxIdentify where you might need to register to collect tax based on past transactions.
  • [claimed-docs] https://docs.stripe.com/taxRegister to collect tax as soon as you start processing payments.
  • [claimed-docs] https://docs.stripe.com/tax/registering.mdYou can also use Stripe to register on your behalf.
  • [claimed-docs] https://docs.stripe.com/tax/file-with-stripe.mdStripe Tax integrates with TaxJar to automate filing for US sales tax, helping you file on time and avoid errors that can occur with manual filing.
  • [probe] https://docs.stripe.com/stripe-cliofficial CLI documented at https://docs.stripe.com/stripe-cli
  • [probe] https://docs.stripe.com/mcpofficial MCP server documented at https://docs.stripe.com/mcp

Export all of my data in open formats and leaveweight 3

3 (weight) × 3 (quality) × 0.6 (partial) = 5.4 of 30 max

  • [claimed-docs] https://docs.stripe.com/tax/reports.mdItemized exports contain a detailed view of the line item level tax breakdown for every transaction.

Read the product's source under an open licenseweight 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

Self-host the core 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

Openness = 12.6 ÷ 50 × 100 = 25.2

Built-in AI10.7/100×0.15 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

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

Set up automations that run autonomously in the backgroundweight 2

2 (weight) × 3 (quality) × 0.6 (partial) = 3.6 of 20 max

  • [claimed-docs] https://docs.stripe.com/tax.mdCalculate sales tax, VAT, and GST for transactions worldwide, determining tax rates based on product type, customer location, and business location.
  • [claimed-docs] https://docs.stripe.com/tax/file-with-stripe.mdStripe Tax integrates with TaxJar to automate filing for US sales tax, helping you file on time and avoid errors that can occur with manual filing.
  • [community] https://hn.algolia.com/api/v1/items/27459712Especially as a EU business owner, I previously had to sync every VAT tax rate possible... Stripe tax does all of that automatically, based on the customer full address and VAT numbers.
  • [community] https://hn.algolia.com/api/v1/items/27459712This looks great. Implementing Avalara for tax calculation was a large pain across multiple dimensions. Stripe Tax integrates with TaxJar for automatic US tax filing. I wish TaxJar had clearer pricing, as 12 filings a year is tiny.
  • [community] https://hn.algolia.com/api/v1/items/27459712So. After 10 years in business and THOUSANDS of customer requests... Stripe has introduced... a calculator. And you still have to do everything yourself - filing the papers and wiring money. Thanks, but no thanks.
  • [probe] https://docs.stripe.com/mcpofficial MCP server documented at https://docs.stripe.com/mcp

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

3 (weight) × 0 (quality) × 0.0 (none) = 0.0 of 30 max

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

Operate the product with natural-language commandsweight 2

2 (weight) × 5 (quality) × 0.6 (partial) = 6.0 of 20 max

  • [probe] https://docs.stripe.com/mcpofficial MCP server documented at https://docs.stripe.com/mcp
  • [probe] https://docs.stripe.com/stripe-cliofficial CLI documented at https://docs.stripe.com/stripe-cli
  • [probe] https://docs.stripe.com/llms.txtPROBE llms.txt: HTTP 200 at https://docs.stripe.com/llms.txt # Stripe Documentation When installing Stripe packages, always check the npm registry for the latest version rather tha

Built-in AI = 9.6 ÷ 90 × 100 = 10.7

Automation0.0/100×0.15 of the PA blend

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

Perform bulk operations across many items at onceweight 2

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

  • [claimed-docs] https://docs.stripe.com/tax/standalone-tax-api.mdTo calculate tax on shipping costs, use the `shipping_cost` parameter
  • [claimed-docs] https://docs.stripe.com/tax/reports.mdItemized exports contain a detailed view of the line item level tax breakdown for every transaction.
  • [claimed-docs] https://docs.stripe.com/tax.mdCalculate sales tax, VAT, and GST for transactions worldwide, determining tax rates based on product type, customer location, and business location.

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

Automation = 0.0 ÷ 20 × 100 = 0.0