A Self-Serve Sex Offender Registry API
Access deduplicated registry data collected from official registries and public
sources across 50 U.S. states and territories.
Create an account, activate the API, and start with 100 free requests every month.
Pay-as-you-go pricing, self-serve onboarding, and no long-term contracts.
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Start Using the Registered Sex Offender API in Minutes
- Create an account
- Add payment card
- Activate Sex Offender API service
- Get your API key
- Track usage, cost, and invoices in your account
No long-term contract. No fixed plan required to start.
Want to Test Sex Offender API Free Before Registering?
Use the sex offender API demo form or public test key (provided in the
documentation) to check the response structure before creating an account.
This demo is for quick evaluation only. It uses a limited test environment and does not represent full API access.
Test access limitations:
- • Up to 5 offenders per response
- • 1 request per second
- • 100 requests per day
- • First request may take up to 30 seconds
- • Limited output fields and record volume
Need Full Sex Offender Lookup API Access?
Create an account and get your own API key for sex offender registry.
Registered users get 100 free requests/month and access to the full API environment.
What the API with U.S. Sex Offender Records Returns
The sexual offender search API returns normalized registry data across 50+ offender profile fields.
- • Personal details
- • Aliases
- • Address information
- • Appearance details
- • Registration details
- • Offense-related fields
- • Photos
- • Vehicle data
- • Employer data
{
"SexOffendersSampleResponse": [
{
"FullName": "Test Offender Name",
"BirthDate": "19790720",
"Age": "44",
"Sex": "Male",
"Race": "White",
"HairColor": "Brown",
"EyeColor": "Blue",
"Address": "570 Windy Dr",
"City": "Austin",
"State": "TX",
"Zip": "78701",
"CountyName": "Travis County",
"Registered": "20210525",
"Status": "Active",
"Risk": "Tier 1",
"VictimMinor": "True",
"VictimSex": "Female",
"ReleaseDate": "20240122",
"Aliases": [
"Test Alias",
"Sample Name"
],
"Employer": "Sample Company",
"Vehicle": "2018 Ford",
"SourceState": "TX",
"SourceId": "123456",
"OffenderLink": "https://state-registry.example/offender/123456",
"MoreFields": "Around 50 data fields"
}
]
}Why Choose Our National Sex Offender Database API
Nationwide Data
Access registry data from official registries and public sources, with record-level referencing where supported.
Deduplicated
Get cleaner search results and fewer repeated offender matches within each state.
Monthly Updates
Work with consistently refreshed registry data updated monthly across nationwide source collection pipelines.
Developer-Friendly
Work with structured JSON responses and REST endpoints across Python, JavaScript, Java, .NET, and more.
Flexible Search
Search offender records by first name, last name, date of birth, city, state, or ZIP.
Cloud-Based
Built on AWS infrastructure with stable cloud delivery and approximately 1.7-second average response times.
Enterprise Options
Request custom configurations, higher throughput, infrastructure adjustments, or enterprise-level API usage support.
Self-Service Access
Create an account, activate the API, and start immediately without sales calls or contract negotiations.
Free & PAYG
Use 100 free requests monthly, then continue with transparent pay-as-you-go API pricing.
Sex Offender API Pricing
Start with 100 free API requests every month.
After that, pricing is based on the number of requests you make during the billing month.
Your usage is tracked in the dashboard, and your card is charged based on your monthly request volume.
Free
$0.00
Cost per request
1–100
MAX requests per token
$0
Estimated month cost
Starter
$0.15
Cost per request
101–300
Requests per token
$30
Estimated month cost
Growth
$0.10
Cost per request
301–3.000
Requests per token
$300
Estimated month cost
Scale
$0.05
Cost per request
3.001–10.000
Requests per token
$680
Estimated month cost
Enterprise
$0.03
Cost per request
10.001–30.000
Requests per token
$1609
Estimated month cost
Unlimited
Unlimited
MAX requests per token
$2500
Estimated month cost
| DETAIL | ||
|---|---|---|
| SERVICE | REQUESTS | TOTAL |
| Sex offender API | 1454 | $145 |
| 0–100 requests | 100 | $0 |
| 101–300 requests | 299 | $30 |
| 301–1,454 requests | 1153 | $115 |
How Teams Use Nannostomus Nationwide Sex Offender Dataset API
Schools
Support visitor reviews, campus-access workflows, and internal safety processes through existing school management systems.
Healthcare
Add offender-record checks to contractor, visitor, patient, or facility-access workflows across healthcare environments.
ID Verification & KYC
Use national sex offender index as a supplemental signal inside ID verification, onboarding, fraud-review, and KYC-related workflows.
Visitor Management
Check visitor records before granting access to buildings, events, offices, or restricted internal facilities.
People Search
Expand public-record search experiences with API access to national sex offender data.
PropTech
Support renter-risk and identity-review workflows inside broader property management and residential access platforms.
Research
Analyze nationwide sexual offender records for investigative, statistical, journalistic, or public-record research across multiple jurisdictions.
Dating
Strengthen trust and moderation workflows with offender-record checks integrated into broader platform safety systems.
Security Platforms
Integrate sex offender records into internal monitoring, access-control, incident-review, or organizational security-management workflows.
Data Aggregators
Expand public-record products with structured offender data available through API access or bulk monthly delivery.
Need Bulk Sex Offender Data Instead of API Access?
| API Access | CSV Delivery |
|---|---|
| Search records when needed | Store and process records internally |
| Built for application workflows | Built for data pipelines and warehouses |
| Request-based usage | Full monthly dataset delivery |
| Self-service onboarding | Managed file delivery |
| Usage-based pricing | Fixed subscription access |
FAQ
You can start with the Nannostomus sex offender data API provider. It includes data from all U.S. states, offers pay-as-you-go pricing, and gives you 100 requests per month free. You can test real responses and upgrade anytime without long-term commitments or setup fees.
Create an account on the API platform, activate the Sex Offender API, and generate your API key from the dashboard. Your account includes 100 free API requests every month. If your usage goes beyond that allowance, you continue on pay-as-you-go pricing.
Pricing is pay-as-you-go. You pay only for the number of API requests you make each month. Plans for sex offender API cost per call start at just a few cents per call, with the first 100 requests free. There are no setup fees, hidden charges, or minimum commitments.
You get 100 free requests each month. After that, pricing is tiered—each block of requests has its own rate. Your bill is the sum of all used tiers. For example, if you make 8,543 requests, you pay for 101–300 at $0.15, 301–3,000 at $0.10, and 3,001–10,000 at $0.05.
Demo access is for quick technical review. It lets you check the endpoint, response format, and basic search behavior with test limits. Full API access requires registration and gives you your own API key, full API environment, dashboard usage tracking, invoices, and 100 free requests every month.
Yes. You can cancel your plan anytime through your self-service dashboard. There are no long-term contracts, and you’re only charged for requests made before cancellation. All invoices remain available for download in your account.
Each month, we collect data from state official registries. The dataset powering our API reflects the latest information available from those sources.
The data is refreshed monthly. This cadence works best for teams that need a maintained registry data layer without building state-by-state collection and update workflows themselves.
Records may include links back to offender profile pages where available. This gives your team a way to review returned matches against public source pages when needed. Source-link availability can vary by record and source, so this should be treated as a review aid.
We rely on official state registries for this information in our sexual offender search API. If a state marks an offender as absconded or removes them due to death, the change is reflected in our next monthly update. We don’t alter or manage these records independently of state data.
Start With 100 Free API Requests
Create an account, activate the Sex Offender API, and test real requests in your own dashboard.
Use 100 requests free every month, then continue with pay-as-you-go pricing only when you need more.
