1Lookup MCP
Phone, email, IP and social data lookups for AI agents: one remote MCP server (Streamable HTTP), 70 data products, priced per lookup.
Documentation
Phone, email, IP and social data your code or your AI agent can call. 76 products in one API, priced per lookup, with a 7-day free trial. Live: millions of lookups processed
Validate Any Phone, Email, or Domain.
Enrich Any Contact
Stop paying for bad data. 76 data products on one API key and one shared credit balance: validation, enrichment, B2B prospecting, SEO and transcription. Validation answers in under 0.3 seconds.
7-day free trial Cancel anytime 5-minute setup No contracts
Millions
Lookups processed
<0.3s
Per verification
on Trustpilot
Millions
Lookups Processed
<0.3s
Instant Verification
Daily
FCC & carrier data
1lookup
Search⌘K
Platform Dashboard Analytics Quick Lookup Lookups History
Data Intelligence All Products Phone Intelligence Email Intelligence IP & Network Intelligence Website & Domain Intelligence Company Intelligence Social & Property
For Developers API & MCP API Docs Integrations
1lookup
DashboardMonitor usage and manage your lookups. Browse all productsRun Lookup Batch Upload
Available Credits 18,240 HealthyYou can perform ~18,240 lookups
Lookups Today 1,284+12% vs yesterday
Success Rate (7 Days) 98.6%High validation rate
Recent lookups Lookups History
+1 (415) 555-0132 Valid · Mobile Number Validation
maria@acme.com Deliverable Email Validation
+44 7700 900123 Active HLR Status Check
Recent lookups Lookups History
+1 (415) 555-0132 Valid · Mobile Number Validation
maria@acme.com Deliverable Email Validation
+44 7700 900123 Active HLR Status Check
203.0.113.42 VPN detected IP Geolocation & ISP
+1 (212) 555-0187 High risk Spam & Risk Check
API Keys
Production KeyActive
sk_live_4c...****
Total Requests48,912 Last Used2 min ago
Manage KeysView API Docs
Usage AnalyticsLast 7 days
842
Thu
1,106
Fri
391
Sat
287
Sun
1,470
Mon
1,145
Tue
1,284
Wed
Integrates with the tools you already use
Phone, email and IP checks, inside the AI assistants, CRMs and apps your team already works in.
ChatGPTAI assistant · via MCP
ClaudeAI assistant · via MCP
CursorAI assistant · via MCP
GrokAI assistant · via MCP
VS CodeAI assistant · via MCP
HubSpotCRM
SalesforceCRM
PipedriveCRM
Zoho CRMCRM
ZapierAutomation
MakeAutomation
n8nAutomation
WebhooksAutomation
TwilioCalls & messaging
AircallCalls & messaging
VonageCalls & messaging
SlackCalls & messaging
Microsoft TeamsCalls & messaging
DiscordCalls & messaging
MailchimpMarketing & email
SendGridMarketing & email
BrevoMarketing & email
MailjetMarketing & email
HootsuiteMarketing & email
BufferMarketing & email
Google SheetsSheets & analytics
AirtableSheets & analytics
NotionSheets & analytics
SegmentSheets & analytics
MixpanelSheets & analytics
Google AnalyticsSheets & analytics
ShopifyApp or support tool
StripeApp or support tool
WordPressApp or support tool
WebflowApp or support tool
ZendeskApp or support tool
IntercomApp or support tool
JiraApp or support tool
GitHubApp or support tool
-
AI assistants5
-
CRMs4
-
Automation4
-
Calls & messaging6
-
Marketing & email6
-
Sheets & analytics6
-
Apps & support8
-
AI assistants
-
CRMs
-
Automation
-
Calls & messaging
-
Marketing & email
-
Sheets & analytics
-
Apps & support
124
step-by-step integration guides
3
native apps on Zapier, Make and n8n
6
AI clients with ready-made MCP setup
Anything that can call a REST API or a webhook works too.
76-in-1
Data Products, One API
1 credit
Per Phone, Email or IP Check
Daily
FCC & Carrier Data Updates
Real-Time
Risk Scoring
Complete Data Suite
Phone Validation & Data Intelligence Suite
Start with real-time validation across phone, email, IP and domain data, then add enrichment, B2B prospecting, SEO intelligence and transcription from the same API and the same universal credits.
Phone Intelligence
Check whether a number is active, risky or fraudulent with one API call.
-
Real-time validation
-
Carrier & porting data
-
DNC registry check
-
Risk level on every number
1 credit a checkMobile, landline or VoIPUS, Canada + international
See How It Works
Email Validation
Verify emails in real time to protect your reputation.
-
Syntax verification
-
MX record check
-
SMTP verification
-
Disposable detection
Live SMTP checkDisposable and role flags1 credit a check
See How It Works
IP Intelligence
Uncover risky IPs and prevent malicious logins.
-
Proxy/VPN detection
-
Hosting & datacenter detection
-
Geolocation data
-
Risk scoring
City-level locationVPN, proxy and Tor flags1 credit a check
See How It Works
Phone Spam Check
Check a number for a spam score and a robocall flag before you answer or call back.
-
Spam score 0-100
-
Robocaller flag
-
Daily or weekly monitoring
-
User-report reputation
1 credit a checkScore from 0 to 100Daily or weekly checks on your numbers
See How It Works
Domain Authority
Score any site's search footprint from 0 to 100.
-
0-100 authority score
-
Referring domains
-
Backlink counts
-
Same credits as every product
One authority numberBacklink profileCredits roll over 3 months
See How It Works
Skip Tracing
Advanced people and asset location services for professionals.
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People search
-
Contact discovery
-
Address intelligence
-
Asset location
API accessSingle or bulk lookupsA phone from a name and address
See How It Works
Explore all products: SEO metrics, B2B prospecting, firmographics & more
New Release
Audio transcription on the same credits as the rest of your stack
Transcribe at scale on the credit balance you already have, billed at 6 credits per minute of audio. No minimums, no setup fees just fast, accurate speech-to-text at scale. Perfect for call centers, monitoring, and large-scale AI training data sets.
-
Speaker labels and word-level timestamps
-
Multi-language Auto-detection
6
Credits per minute
Auto
Language detection
$0
Setup fees
None
Minimums
Start Your Free Trial NowView Pricing
Universal Credit System
All products use the same universal credits
No complex pricing tiers · Pay only for what you use · 7-day free trial credits
Response stream
This is what millions of lookups actually look like
33 endpoints in this stream, spanning validation, enrichment, monitoring, B2B prospecting, web intelligence, audio and fraud, all behind a single API key, and every identifier partially redacted.
app.1lookup.io/api Identifiers redacted
+1 (415) 892-•••• Verified
Line status·Mobile, not on DNC
+1 (415) 892-••••Line status/v1/phoneMobile, not on DNC Verified
s•••••@acme.com Verified
Mailbox check·Mailbox exists
s•••••@acme.comMailbox check/v1/emailMailbox exists Verified
72.229.28.••• Verified
IP risk·Residential, US
72.229.28.•••IP risk/v1/ipResidential, US Verified
+1 (555) 019-•••• Flagged
Spam score·Reported robocaller
+1 (555) 019-••••Spam score/v1/phone-spamReported robocaller Flagged
45.134.26.•• Rejected
Fraud scan·VPN egress node
45.134.26.••Fraud scan/v1/ipVPN egress node Rejected
batch_4f8a•••••• Verified
Bulk intake·Batch accepted
batch_4f8a••••••Bulk intake/v1/bulk/jobsBatch accepted Verified
Northwind T••••• Verified
Firmographics·SIC, size, revenue band
Northwind T•••••Firmographics/v1/company-firmographicsSIC, size, revenue band Verified
S••••• C••• Verified
Contact append·Work email matched
S••••• C•••Contact append/v1/b2b-contact-appendWork email matched Verified
lumen•••••.io Verified
Authority·Referring domains up
lumen•••••.ioAuthority/v1/domain-authorityReferring domains up Verified
phone validation •••• Verified
Keyword data·Volume, CPC, AI Overview
phone validation ••••Keyword data/v1/keyword-metricsVolume, CPC, AI Overview Verified
aud_7c1••••• Verified
Audience·Segment resolved
aud_7c1•••••Audience/v1/audience-intelligenceSegment resolved Verified
call_9f2c••••.mp3 Verified
Transcription·Transcript returned
call_9f2c••••.mp3Transcription/v1/audio-transcriptionTranscript returned Verified
33 endpoints shown · read the API docs
New: The Social Suite
Social media data, priced per lookup
Seven APIs pull live public data from 13 social platforms: who a creator is, what a post did, what a video says, who is running ads and where an audience lives. No platform review process, no separate social-data plan, and a lookup that finds nothing costs nothing.
Social Profile Check
Followers, engagement and account flags for any handle on 10 platforms.
Explore
Social Post Lookup
Likes, comments, shares, views and caption for any post URL.
Explore
Video Transcript
The full transcript behind any public social video, as text.
Explore
Social Search
Keyword search across six platforms, up to 20 results per call.
Explore
Ad Library Lookup
Who is running ads on Meta, TikTok, LinkedIn and Google, and what they say.
Explore
TikTok Audience Demographics
Which countries a creator's followers actually live in.
Explore
Link-in-Bio Lookup
Every destination behind a Linktree-style page, as structured links.
Explore
{ "url": "instagram.com/p/DLm4…" }
Existstrue
Author@fernandtrail
Likes48,213
Comments1,067
Views612,400
Posted3 days ago
Live fetch, seconds. Misses cost 0 credits.5 credits
13 platforms, one response shape
InstagramTikTokYouTubeX / TwitterFacebookLinkedInThreadsRedditPinterestBlueskyTwitchSnapchatTruth Social
Every lookup is success-billed: a dead profile, deleted post or empty search bills 0 credits. Results cache for 7 days, and repeat lookups are instant. Same key and credit balance as every other 1Lookup product.
One API key
76 data products, one pool of credits
Every product draws from the same universal credit balance, so moving from phone validation to enrichment, SEO data or transcription is a URL change, not a new contract.
Validate
Enrich
Social
Monitor
Intelligence
How it works
Live in three steps
From signup to live data in about five minutes. No infrastructure to stand up, no long-term contract.
1
Grab your API key
Create a free account and get a live API key in minutes: no sales call, no setup fees.
2
Send a lookup
Your code or your agent calls a single endpoint with a phone, email, IP, domain, company, or keyword, or upload a CSV for batch jobs. One universal credit system covers every product.
3
Act on clean data
Validation lookups return risk and confidence scores in under 0.3 seconds, straight from FCC and carrier sources. Enrichment, prospecting and SEO lookups return full records from the same key. Stop paying for bad data.
Start For Free Try a free tool first
for AI agents
The same data, called by your agent instead of your code
Point Claude or Cursor at one URL and 1Lookup shows up as tools inside the client. OAuth handles authorization, so there is no API key to paste into a config file. Tool calls spend the same credits as the REST API, at the same per-lookup rate.
One URL
https://app.1lookup.io/api/mcp is the whole integration. Streamable HTTP, nothing to install.
OAuth 2.1, no API key
Sign in, approve, done. Your key never enters a prompt or a config file.
Five tools
validate_phoneverify_emailip_lookupbulk_verifyget_account
Real-Time Intelligence
Real-Time Fraud Intelligence
Monitor and prevent fraud with advanced analytics and real-time risk scoring across all validation types
Direct-Source Validation
Daily FCC & TCPA Data
Phone Validation
Daily-updated line type and carrier data direct from FCC & carrier sources
Email Validation
Real-time SMTP and mailbox checks with disposable-domain detection
IP Intelligence
Proxy, VPN and Tor flags, plus a check against three public spam blocklists
Risk signals on every check, data updated daily
Live signal
Fast responses, daily-updated source data, and real-time fraud scoring
Global Coverage
One API and one credit system cover everything from phone, email, and IP validation to enrichment, B2B prospecting, and SEO data, and phone checks cover US, Canadian and international numbers.
Updated Daily
Phone, Carrier & FCC Data
Millions
Lookups Processed
Risk Scoring
A risk level on every phone check, and a 0-100 fraud score on every email and IP check
Blocklist Check
Public IPv4 addresses are checked against three public spam blocklists
Global Intel
Proxy and VPN risk signals returned on every IP lookup
Analytics
Detailed insights and reporting for better decisions
Built to Scale With You
Phone and carrier data is updated daily, one CSV upload takes up to 2 million rows, each API key can send 200 standard requests per 10 seconds, and each account can make up to 1,000 requests a minute in total across all its keys, with higher limits available.
2M
Rows per CSV Upload
1 credit
Per Phone, Email or IP Check
200
Requests per 10 Seconds per API Key
7-day
Result Caching
Customer reviews
What customers say on Trustpilot
See how businesses like yours are preventing fraud, improving data quality, and increasing revenue with 1Lookup
"Been using 1Lookup for a couple months now. We verify leads before pushing them into Pipedrive. Honestly it just works. Not fancy, not buggy, and the support actually answers when you write them. Can't really ask for more."
Brian Letzter
Review on Trustpilot, October 2025
"We use 1Lookup inside our telemarketing app to verify numbers before they go to the dialer. Setup was simple and the results have been consistent. It's not overloaded with features, just fast, accurate, and reliable. Docs could be a bit deeper, but honestly, it works out of the box."
Dirk van Meer
Review on Trustpilot, December 2025
"We run a SaaS product with free trials and were getting flooded with bots and fake users. After integrating 1Lookup, the difference was night and day. It quietly filters out junk signups without blocking legitimate customers. The support team even helped us fine-tune our risk thresholds on a quick Zoom call. Being honest, we couldn't ask for more."
Ido Shacham
Review on Trustpilot, January 2026
Read all of our reviews on Trustpilot
1Lookup Beats the Competition
Daily FCC and carrier data in every phone check. Built for businesses like yours.
Compare with 30+ Industry Leaders
See detailed comparisons with every major validation provider
AllEmail ValidationPhone ValidationIP IntelligenceMulti-ServiceData EnrichmentAddress ValidationData QualityB2B Contact Data
Showing 6 of 33 competitors
Twilio Lookup
Phone Validation
Lower per-lookup price
FCC & carrier source data
Email and IP checks on the same credits
ZeroBounce
Email Validation
Real-time processing
Phone and IP checks on the same credits
Fraud score on every email
Abstract API
Multi-Service
Specialized expertise
Phone, email, and IP in one API
Purpose-built
Numverify
Phone Validation
Real-time HLR data
Fraud scoring included
Email and IP checks on the same credits
ipapi
IP Intelligence
Built-in fraud detection
VPN/Proxy detection
Phone and email checks on the same credits
NeverBounce
Email Validation
Phone and IP checks on the same credits
Real-time validation
Advanced fraud detection
Show all 33 competitors
Features
Data Freshness
Data Source
Pricing Model
Fraud Scoring
DNC Registry
No Contracts
Instant Setup
SMB Friendly
Pricing Approach
1lookup
Daily Updates
Direct from FCC & carrier data
One credit balance for everything, one key
5 minutes
Pay only for what you use
Typical Competitors
Monthly/Quarterly
Recycled databases
Complex tiers
Days/Weeks
Complex pricing tiers
Data Freshness
1lookup
Daily Updates
Competitors
Monthly/Quarterly
Data Source
1lookup
Direct from FCC & carrier data
Competitors
Recycled databases
Pricing Model
1lookup
One credit balance for everything, one key
Competitors
Complex tiers
Fraud Scoring
1lookup
Competitors
DNC Registry
1lookup
Competitors
No Contracts
1lookup
Competitors
Instant Setup
1lookup
5 minutes
Competitors
Days/Weeks
SMB Friendly
1lookup
Competitors
Pricing Approach
1lookup
Pay only for what you use
Competitors
Complex pricing tiers
Fresh Daily Data
Direct from FCC & carriers daily. Competitors use months-old recycled data
Universal Credits
One simple credit works for everything. No confusing tiers or surprise charges
SMB-Focused
Built for growing businesses. Start in 5 minutes, scale as you grow
Daily
FCC & Carrier Data Updates
1 credit
Per Phone, Email or IP Check
$0
Setup Fees or Minimums
Telemarketing & Outreach
Unlimited AI Ringless Voicemail Drops
Win more leads, meetings, and deals with ringless voicemails. VoiceDrop scales your campaigns with unlimited voicemails, lifelike AI voice cloning, and built-in phone verification tools.
Ringless voicemail software with built-in phone verification
Perfect for telemarketing and outreach campaigns. VoiceDrop delivers voicemails directly to recipients' voicemail boxes without ringing their phones, ensuring higher engagement rates and better compliance.
Check your numbers with 1Lookup before you send:
Phone Spam Check
Check whether your numbers are flagged as spam
Phone Number Validation
Verify you're not wasting efforts on dead or non-compliant numbers
Try VoiceDrop Free Watch Demo
Unlimited Scale
Send hundreds or millions of voicemails
AI Inbound Agent
Never miss a deal - AI agents qualify leads and schedule meetings automatically
AI Voice Cloning
Lifelike AI voices for personalized messages
FAQ
Questions, answered
The essentials on accuracy, integration, and security. Need more detail? The full FAQ has you covered.
What is 1Lookup and how does it work?
1Lookup is a data intelligence platform with 76 products behind one API: phone, email, and IP validation, contact and company enrichment, B2B prospecting, SEO and web intelligence, and audio transcription. We aggregate data from multiple trusted sources to deliver real-time insights that help businesses verify identities, prevent fraud, and improve data quality.
How accurate is your data?
Our data is updated daily from carrier networks, regulatory databases, and other authoritative sources. We also provide confidence scores and data freshness indicators with each lookup.
What industries benefit most from 1Lookup?
1Lookup serves diverse industries including e-commerce (fraud prevention), financial services (KYC compliance), healthcare (patient verification), education (student authentication), marketing (lead quality), and SaaS companies (user verification). Any business that needs to verify customer data can benefit from our services.
Do you offer a free trial?
Yes. Every plan starts with a 7-day free trial, and you pay $0 today. The Starter trial includes 1,010 credits, about 1,000 phone, email or IP checks, and bigger plans include about 5,700 to 10,000 credits, usable on every product. You can sign up instantly and start making API calls within minutes.
How do I integrate with the 1Lookup API?
Integration is simple! After signing up, you'll receive an API key. Our RESTful API accepts JSON requests and returns structured JSON responses. We provide detailed documentation and code examples in popular programming languages.
What are the API rate limits?
Rate limits vary by subscription plan. Free trial accounts have generous limits for testing. Production plans include higher rate limits and dedicated infrastructure. Contact us for custom enterprise rate limits if needed.
Start Free Today
Stop Paying for Bad Data
Join leading businesses worldwide validating contacts, enriching records, and catching more fraud with better data. Start free in 5 minutes.
A 7-day free trial to test accuracy
Direct FCC data updated daily
Live in 5 minutes or less
One API for validation, enrichment & prospecting
7-day free trial • Setup in 5 minutes • Premium support
Customer reviews on TrustpilotCancel anytimeEncrypted in transit and at rest
Source: https://www.1lookup.io/
Machine-readable entry points: llms.txt · llms-full.txt · sitemap.xml · openapi.json · MCP server card · Product catalog