Linear Validation API Integration
Validate phone, email, and IP data automatically across Linear, so your team works from clean, verified records.
The 1Lookup Linear integration validates phone, email, and IP data for Linear. 1Lookup checks phone line type and carrier, email deliverability, and IP risk (VPN, proxy, and fraud signals), then returns structured results so Linear acts on verified, lower-risk data instead of guesswork.
Why validate Linear data with 1Lookup
Linear integrations call the 1Lookup REST API to validate phone, email, and IP data inline. Responses are clean JSON, so you can validate on submit, enrich records, and act on the result inside Linear with minimal code.
Authenticate with an API key, send the value to validate, and map the structured response (line type, carrier, deliverability, IP risk) into Linear. Use webhooks or batch endpoints for higher volume.
What you can do
Phone validation
Validity, line type, and carrier for every number flowing through Linear.
Email verification
Deliverability plus disposable and role-based detection for emails in Linear.
IP & fraud signals
Geolocate the IP and flag VPN/proxy and fraud risk on each Linear record.
One REST API
Validate phone, email, and IP from Linear through a single clean API.
How to connect 1Lookup to Linear
Create a 1Lookup account and API key
Sign up for a free 1Lookup account and generate an API key from the dashboard. Free-tier lookups let you test before rolling out.
Store the key securely
Keep the 1Lookup API key in your backend's secrets store (e.g. environment variables), not in client code.
Call the 1Lookup REST API
From your Linear workflow, send the phone, email, or IP to validate and read the clean JSON response.
Map and persist
Write the validated fields back into Linear for reporting and automation.
Use cases
Validate at input
Call 1Lookup from Linear on form submit or record create to reject invalid phone numbers and emails before they are stored.
Enrich and store
Persist 1Lookup's structured fields in Linear so line type, carrier, and deliverability are queryable later.
Frequently asked questions
What does 1Lookup validate for Linear?
1Lookup validates phone (validity, line type, carrier), email (deliverability, disposable/role-based), and IP (geolocation, VPN/proxy, risk) data. You choose which fields to store in Linear.
Do I need to write code to use 1Lookup with Linear?
Yes, this integration calls the 1Lookup REST API, so it suits developer workflows. You authenticate with an API key and map the JSON response into Linear.
Can I validate records I already have in Linear?
Yes. Alongside real-time validation, you can run existing Linear records through 1Lookup batch validation and write the cleaned results back.
How long does setup take?
Setup is quick for most teams. The exact time depends on how many fields you map and whether you validate in real time, in bulk, or both.