1Lookup

1Lookup REST API

RESTful API over HTTPS covering all 1Lookup products (phone/email/IP validation, fraud, enrichment, B2B data, SEO intelligence). API-key Bearer auth (sk_live_ keys, organization-scoped), JSON bodies, one response envelope on every product, and job-based bulk processing up to 100,000 rows with an Idempotency-Key contract and signed webhook callbacks. 46 documented operations, almost all POST, priced against a universal credit balance. No OpenAPI or other machine-readable contract is published.

GitHub

Documentation

📖
Documentation
https://app.1lookup.io/api
📖
APIReference
https://app.1lookup.io/api#endpoints
📖
GettingStarted
https://app.1lookup.io/api#getting-started
📖
Authentication
https://raw.githubusercontent.com/api-evangelist/1lookup/refs/heads/main/authentication/1lookup-authentication.yml
📖
RateLimits
https://raw.githubusercontent.com/api-evangelist/1lookup/refs/heads/main/rate-limits/1lookup-rate-limits.yml

Other Resources

🔗
Conventions
https://raw.githubusercontent.com/api-evangelist/1lookup/refs/heads/main/conventions/1lookup-conventions.yml
🔗
ErrorCatalog
https://raw.githubusercontent.com/api-evangelist/1lookup/refs/heads/main/errors/1lookup-problem-types.yml
🔗
Lifecycle
https://raw.githubusercontent.com/api-evangelist/1lookup/refs/heads/main/lifecycle/1lookup-lifecycle.yml
🔗
Idempotency
https://raw.githubusercontent.com/api-evangelist/1lookup/refs/heads/main/conventions/1lookup-conventions.yml
🔗
Webhooks
https://raw.githubusercontent.com/api-evangelist/1lookup/refs/heads/main/asyncapi/1lookup-webhooks.yml
🔗
DataModel
https://raw.githubusercontent.com/api-evangelist/1lookup/refs/heads/main/data-model/1lookup-data-model.yml
🔗
Examples
https://raw.githubusercontent.com/api-evangelist/1lookup/refs/heads/main/examples/1lookup-examples.yml
🔗
APIsJSON
https://raw.githubusercontent.com/api-evangelist/1lookup/refs/heads/main/apis.yml

API entry from apis.yml

apis.yml Raw ↑ 
name: 1Lookup REST API
description: RESTful API over HTTPS covering all 1Lookup products (phone/email/IP validation, fraud, enrichment,
  B2B data, SEO intelligence). API-key Bearer auth (sk_live_ keys, organization-scoped), JSON bodies,
  one response envelope on every product, and job-based bulk processing up to 100,000 rows with an Idempotency-Key
  contract and signed webhook callbacks. 46 documented operations, almost all POST, priced against a universal
  credit balance. No OpenAPI or other machine-readable contract is published.
humanURL: https://app.1lookup.io/api
baseURL: https://app.1lookup.io/api/v1
tags:
- phone validation
- email validation
- IP intelligence
- fraud & risk
- data enrichment
- B2B contact & company data
- SEO / web analytics
- audio transcription
- REST API
properties:
- type: Documentation
  url: https://app.1lookup.io/api
- type: APIReference
  url: https://app.1lookup.io/api#endpoints
- type: GettingStarted
  url: https://app.1lookup.io/api#getting-started
- type: Authentication
  url: authentication/1lookup-authentication.yml
- type: Conventions
  url: conventions/1lookup-conventions.yml
- type: ErrorCatalog
  url: errors/1lookup-problem-types.yml
- type: RateLimits
  url: rate-limits/1lookup-rate-limits.yml
- type: Lifecycle
  url: lifecycle/1lookup-lifecycle.yml
- type: Idempotency
  url: conventions/1lookup-conventions.yml
- type: Webhooks
  url: asyncapi/1lookup-webhooks.yml
- type: DataModel
  url: data-model/1lookup-data-model.yml
- type: Examples
  url: examples/1lookup-examples.yml