{
  "$id": "https://startups.as/taxrates.dev",
  "$type": "Name",
  "source": {
    "kind": "api.sb",
    "ns": "startups.as",
    "at": "2026-10-26T12:16:35.711Z",
    "note": ""
  },
  "name": {
    "$id": "https://api.sb/startups.as/names/taxrates.dev",
    "version": 2437,
    "domain": "taxrates.dev",
    "label": "Taxrates.Dev",
    "tier": "namespace",
    "kind": "Software",
    "coreNoun": "Return",
    "buyer": "Developers needing tax rates",
    "set": "S20 One statute, one check (.dev regulatory checks)",
    "abstraction": "V-tax",
    "role": "projection",
    "status": "namespace seed",
    "registrar": "porkbun",
    "stage": "off",
    "provenance": {
      "tier": {
        "basis": "Inferred",
        "source": "portfolio-lens-a.tsv (tier)",
        "confidence": "med",
        "by": "agent:startups-as-seed",
        "at": "2026-10-25"
      },
      "role": {
        "basis": "Inferred",
        "source": "portfolio-lens-b.tsv (role)",
        "confidence": "high",
        "by": "agent:startups-as-seed",
        "at": "2026-10-25"
      },
      "status": {
        "basis": "Inferred",
        "source": "lens A tier namespace",
        "confidence": "med",
        "by": "agent:startups-as-seed",
        "at": "2026-10-25"
      },
      "abstraction": {
        "basis": "Inferred",
        "source": "portfolio-lens-b.tsv (abstraction)",
        "confidence": "high",
        "by": "agent:startups-as-seed",
        "at": "2026-10-25"
      },
      "set": {
        "basis": "Inferred",
        "source": "portfolio-lens-a.tsv (set_or_journey)",
        "confidence": "med",
        "by": "agent:startups-as-seed",
        "at": "2026-10-25"
      },
      "buyer": {
        "basis": "Inferred",
        "source": "portfolio-lens-b.tsv (icp_or_position)",
        "confidence": "high",
        "by": "agent:startups-as-seed",
        "at": "2026-10-25"
      },
      "coreNoun": {
        "basis": "Inferred",
        "source": "seed rule: the unit noun of lens B abstraction V-tax (portfolio-lens-b.md §1)",
        "confidence": "low",
        "by": "agent:startups-as-seed",
        "at": "2026-10-25"
      },
      "kind": {
        "basis": "Inferred",
        "source": "seed rule: name grammar api(s).*/.dev/.studio/.management/.app; product kinds per studio CONTEXT.md (Cloud · Data · Software · Service · Commerce · Marketplace)",
        "confidence": "low",
        "by": "agent:startups-as-seed",
        "at": "2026-10-25"
      },
      "display": {
        "basis": "Inferred",
        "source": "seed rule from the casing rules in docs/plans/2026-10-24-portfolio-stack-visualization.md; compound labels are open",
        "confidence": "low",
        "by": "agent:startups-as-seed",
        "at": "2026-10-25"
      },
      "registrar": {
        "basis": "Inferred",
        "source": "holdings ledger (domains repo, read-only)",
        "confidence": "high",
        "by": "agent:startups-as-seed",
        "at": "2026-10-25"
      }
    },
    "tensions": [
      {
        "field": "tier",
        "a": "namespace",
        "b": "projection",
        "scale": "namespace vs brand",
        "note": "lens A reads namespace (namespace); lens B reads projection (brand)"
      }
    ]
  },
  "stack": {
    "kind": "generated",
    "title": "Generated around Taxrates.Dev",
    "levels": [
      {
        "label": "centre",
        "nodes": [
          {
            "domain": "taxrates.dev",
            "side": "spine",
            "door": false
          }
        ],
        "more": 0
      },
      {
        "label": "the businesses",
        "nodes": [
          {
            "domain": "apis.finance",
            "side": "spine",
            "door": false
          }
        ],
        "more": 0
      },
      {
        "label": "the abstractions",
        "nodes": [
          {
            "domain": "headless.ly",
            "side": "spine",
            "door": false
          }
        ],
        "more": 0
      },
      {
        "label": "the abstractions",
        "nodes": [
          {
            "domain": "saas.studio",
            "side": "spine",
            "door": false
          }
        ],
        "more": 0
      },
      {
        "label": "brands",
        "nodes": [
          {
            "domain": "api.sb",
            "side": "spine",
            "door": false
          }
        ],
        "more": 0
      },
      {
        "label": "brands",
        "nodes": [
          {
            "domain": "startups.studio",
            "side": "door",
            "door": true
          },
          {
            "domain": "startupbuilder.dev",
            "side": "spine",
            "door": false
          }
        ],
        "more": 0
      }
    ],
    "edges": [
      {
        "a": "taxrates.dev",
        "b": "apis.finance",
        "kind": "line",
        "backed": true,
        "verb": "runs-on",
        "basis": "Inferred"
      },
      {
        "a": "apis.finance",
        "b": "headless.ly",
        "kind": "line",
        "backed": true,
        "verb": "runs-on",
        "basis": "Inferred"
      },
      {
        "a": "headless.ly",
        "b": "saas.studio",
        "kind": "line",
        "backed": true,
        "verb": "runs-on",
        "basis": "Inferred"
      },
      {
        "a": "saas.studio",
        "b": "api.sb",
        "kind": "line",
        "backed": true,
        "verb": "runs-on",
        "basis": "Inferred"
      },
      {
        "a": "api.sb",
        "b": "startupbuilder.dev",
        "kind": "line",
        "backed": true,
        "verb": "runs-on",
        "basis": "Inferred"
      },
      {
        "a": "startups.studio",
        "b": "startupbuilder.dev",
        "kind": "door",
        "backed": true,
        "verb": "door-of"
      }
    ],
    "text": "                             Taxrates.Dev                    centre\n                                   │\n                             APIs.Finance                    the businesses\n                                   │\n                              Headless.ly                    the abstractions\n                                   │\n                              SaaS.Studio                    the abstractions\n                                   │\n                                API.SB                       brands\n                                   │\n   Startups.Studio ────── StartupBuilder.Dev                 brands"
  },
  "relationships": [
    {
      "$id": "https://api.sb/startups.as/relationships/runsOn--taxrates.dev--apis.finance",
      "version": 4198,
      "from": "taxrates.dev",
      "to": "apis.finance",
      "verb": "runs-on",
      "why": "sb def taxrates.dev: built on apis.finance [low] — The fan-out places it in the apis.finance family (register market accounting-tax). Stated, not an observed call.",
      "sources": [
        "docs/plans/research/2026-10-24-builder-brands/logo-graph.tsv"
      ],
      "confidence": "low",
      "basis": "Inferred",
      "truth": "buildable",
      "predicate": "logo row: \"Powering\" / \"Built on\" (customer runs on supplier)",
      "retracted": false,
      "by": "agent:startups-as-seed",
      "at": "2026-10-25"
    },
    {
      "$id": "https://api.sb/startups.as/relationships/runsOn--taxrates.dev--apis.accountants",
      "version": 4197,
      "from": "taxrates.dev",
      "to": "apis.accountants",
      "verb": "runs-on",
      "why": "sb def taxrates.dev: built on functions/tax [medium]; apis.accountants is its preferred provider [medium]",
      "sources": [
        "docs/plans/research/2026-10-24-builder-brands/logo-graph.tsv"
      ],
      "confidence": "medium",
      "basis": "Inferred",
      "truth": "specified",
      "predicate": "logo row: \"Powering\" / \"Built on\" (customer runs on supplier)",
      "retracted": false,
      "by": "agent:startups-as-seed",
      "at": "2026-10-25"
    }
  ],
  "neighbours": {
    "sameAbstraction": [
      "apis.accountants",
      "amended.tax",
      "enrolled.tax",
      "gigs.accountants",
      "gigs.tax",
      "moonlight.accountants",
      "overflow.tax",
      "preparers.tax",
      "shingle.accountant",
      "auditor.do",
      "audits.do",
      "cpa.org.ai",
      "tax.org.ai",
      "taxes.do",
      "auditors.expert",
      "engagementletters.co",
      "exchequer.tax",
      "itemized.click",
      "quarterlies.click",
      "salestax.click",
      "taxhome.dev"
    ],
    "listedBy": [],
    "logoRowsIn": [
      {
        "row": "apis.finance",
        "truth": "buildable"
      },
      {
        "row": "apis.accountants",
        "truth": "specified"
      }
    ],
    "logoRow": [],
    "slices": []
  },
  "card": {
    "$context": "https://api.sb/?array",
    "$id": "https://api.sb/taxrates.dev?array",
    "$type": "Startup",
    "id": "startup_taxratesdev",
    "name": "taxrates.dev",
    "pitch": "The rate as a call: one address in, the combined rate and each jurisdiction's part out, with the source file and effective date on every answer. Data, not a filing service; the returns route to salestax.click.",
    "icp": "Developers and agents that need the sales tax rate for an address before they show a total",
    "status": "Designed",
    "ventures": [
      {
        "$id": "https://api.sb/startups?venture=back-office&array",
        "name": "Back office"
      }
    ],
    "families": [
      {
        "$id": "https://api.sb/startups?family=dev&array",
        "name": "dev (suffix .dev)"
      }
    ],
    "abstractions": [
      "Dataset"
    ],
    "motions": [
      "b2d",
      "b2b"
    ],
    "coordinates": {
      "icp": "Developers and agents that need the sales tax rate for an address before they show a total",
      "occupations": {
        "Software Developers · serves": "https://api.sb/Occupations/Computer_and_Mathematical/Computer/Software_and_Web_Developers/Software_Developers?array"
      },
      "processes": {
        "9.9.2": "https://api.sb/Processes/9.9.2?array"
      },
      "supplies": {
        "TaxRate.lookup": "https://api.sb/startups?drawsOn=TaxRate.lookup&array",
        "RateChange.list": "https://api.sb/startups?drawsOn=RateChange.list&array"
      },
      "offers": {
        "taxrates.dev API: metered per lookup · b2d · $0.01 per rate lookup · metered API": "https://api.sb/by-motion/b2d?array",
        "Quarterly rate-change file for systems that keep their own tables · b2b · $149/year · self-serve software": "https://api.sb/by-motion/b2b?array"
      },
      "products": {
        "Combined sales and use tax rate by address, with each jurisdiction's part (state, county, city, special district) · Dataset": "https://api.sb/by-abstraction/data?array",
        "Rate changes by effective date, so a system can load next quarter's rates before they apply · Dataset": "https://api.sb/by-abstraction/data?array"
      },
      "oneLiner": "The sales tax rate as a call: one address in, the combined rate and each jurisdiction's part out, with source and effective date, priced per lookup.",
      "category": "Sales tax rate API",
      "beats": {
        "Avalara AvaTax: Rooftop-accurate, but annual per-state tiers sold through sales: too much commitment for a single rate lookup.": "https://api.sb/by-alternative/incumbent?array",
        "TaxJar: Accurate with address validation, but monthly plans by order volume, no per-lookup option.": "https://api.sb/by-alternative/incumbent?array",
        "API Ninjas Sales Tax API: Self-serve but ZIP-based, with city/county breakdown only on premium; wrong where a ZIP spans jurisdictions.": "https://api.sb/by-alternative/incumbent?array",
        "Free ZIP-code lookup (Avalara TaxRatesByPostalCode): ZIP-only by definition, so wrong across multi-jurisdiction ZIPs, and the free tier is reported gone.": "https://api.sb/by-alternative/nothing?array"
      },
      "unplaced": {
        "industries": "not placed yet: ideate.icp places it from the Startup’s sources",
        "occupations": "not placed yet: ideate.icp places it from the Startup’s sources",
        "processes": "not placed yet: ideate.icp places it from the Startup’s sources",
        "supplies": "not yet: build.product names the Verbs it serves",
        "drawsOn": "not yet: build.product names what it draws on",
        "beats": "not yet: the choice (ideate.hypothesis) names each rival by its URL"
      }
    },
    "platform": false,
    "domains": [
      {
        "$id": "https://api.sb/domains/taxrates.dev?array",
        "name": "taxrates.dev"
      }
    ],
    "usesPlatform": "https://api.sb/?array"
  },
  "links": {
    "page": "https://startups.as/taxrates.dev",
    "apiSb": "https://api.sb/startups.as/names/taxrates.dev",
    "startupCard": "https://api.sb/taxrates.dev"
  }
}