BuiltWith API

builtwith.com

API

Verification pendingResearched, not yet routed

Technology lookup for any website, with historical usage. Buying direct: From $295/mo. Listed Sep 29, 2026.

Capabilities: 0
From: n/a
Calls, 30 days: 0
Ranked first: 0 of 0

Overview

Researched from the vendor's own pages; every fact links to its source and the day we checked it.

Technographics: detects the technologies a site uses, with current and historical data, lists and change feeds; JSON, XML and CSV API outputs.

Company

Verified

Legal name: Not confirmed
Headquarters: Not confirmed
Founded: 2007
Employees: Not confirmed
Ownership: Not confirmed
Status: active
Kind: Not confirmed
Website: builtwith.com
Support: docs

API

Access: Self-serve API
Style: Not confirmed
Auth: API key (query)
Base URL: https://api.builtwith.com
Features: Bulk —Async —Webhooks —MCP —Sandbox —
Rate limit: Free API rate limited to 1 request/second
Docs: Reference Rate limits

Pricing

Model: subscription
List prices: Basic $295/mo
Pro $495/mo
Team $995/mo
Currency: USD
Free tier: Free API (rate limited)
Checked: Sep 29, 2026

Compliance

SOC 2: Not confirmed
GDPR: Stated
CCPA: Not confirmed
DPA: Not confirmed
Resale / storage: Unknown until a written agreement says otherwise

Relationships

Integrations: Not confirmed
Alternatives: None named by the vendor

Sources (3)

BuiltWith planschecked Sep 29, 2026
BuiltWith APIchecked Sep 29, 2026
Wikidata: headquarters and inceptionchecked Sep 29, 2026

Placement in the Grid

Where this vendor sits on the GridRouter Grid in each category it serves. No vendor pays for placement.

Placement in the GridRouter Grid by category
Category	Placement	Execute	Coverage	Report
Company & Firmographics	Not yet rated	–	–	View Grid
Intent & Signals	Not yet rated	–	–	View Grid
Technographics	Not yet rated	–	–	View Grid

API

The vendor's OpenAPI document as stored in the catalog, its operations, and the rate limits it publishes.

Reconstructed · low confidenceOpenAPI 3.1.0 · 2 operations · checked Sep 29, 2026 Spec (YAML)

Rebuilt from the vendor's public docs, only what the pages show. Each operation links the page it came from; response shapes the docs don't spell out are left empty rather than guessed.

Operations in the builtwith spec
Method	Path	Summary	Params	Source
GET	/v26/api.json	Domain lookup	0	Docs
GET	/rv5/api.json	Relationships	0	Docs

Rate limits

Published rate limits for builtwith
Limit	Scope	Plan	Endpoint	Burst / concurrency
10 / second	key	All	All	— / 8
1 / second	plan	Free API	All	— / 8

Headers: X-RATELIMIT-LIMIT-CONCURRENTX-RATELIMIT-LIMIT-PERSECONDX-RATELIMIT-CURRENT-CONCURRENTX-RATELIMIT-CURRENT-PERSECONDX-API-CREDITS-REMAINING. On 429: 429 errors above 8 concurrent or 10 requests per second; error body includes retryAfterSeconds. GridRouter never paces above these and backs off on 429, honoring Retry-After. Source, checked Sep 29, 2026