Nannostomus website screenshot

Nannostomus

Nannostomus provides a sex offender search API covering 771k+ offender records across all 50 U.S. states and 14 territories. It supports search by state and name, with monthly per-state record updates, deduplication, and 99.9% uptime backed by cloud infrastructure. A free tier covers up to 100 requests per month with tiered pay-as-you-go pricing beyond that.

Nannostomus publishes 1 API on the APIs.io network. Tagged areas include Public Safety, Sex Offenders, Government, Search, and Records.

Nannostomus’ developer surface includes documentation, pricing, support, and 3 more developer resources.

🌐 Visit website 📡 Source on GitHub
20.9/100 emerging ▬ flat Agent 3/100 human only Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessFreemium
1 APIs
Public SafetySex OffendersGovernmentSearchRecords

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 20.9/100 · emerging
Contract Quality 0.0 / 25
Developer Ergonomics 2.6 / 20
Commercial Clarity 10.0 / 20
Operational Transparency 4.1 / 13
Governance 0.0 / 12
Discoverability 5.9 / 10
Agent readiness — 3/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 10
MCP Server 0 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/nannostomus: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 1

Individual APIs this provider publishes, each with its own machine-readable definition.

Nannostomus Sex Offender API

The Nannostomus Sex Offender API enables search of 771k+ offender records by state and name across all 50 U.S. states and 14 territories. Records are updated monthly with per-st...

Pricing Plans 1

Published pricing tiers and plan structures.

Nannostomus Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Nannostomus Rate Limits

5 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Nannostomus Finops

FINOPS

Security Posture 1

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Nannostomus Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support
Support

Commercial 1

Pricing, plans, and the legal terms of use

Pricing
Pricing

Company 2

The organization behind the API

LinkedIn
LinkedIn
 Website
Website

Source (apis.yml)

apis.yml Raw ↑ 
aid: nannostomus
name: Nannostomus
description: Nannostomus provides a sex offender search API covering 771k+ offender records across all 50 U.S. states and
  14 territories. It supports search by state and name, with monthly per-state record updates, deduplication, and 99.9% uptime
  backed by cloud infrastructure. A free tier covers up to 100 requests per month with tiered pay-as-you-go pricing beyond
  that.
type: Index
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
position: Consumer
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/nannostomus.png
url: https://raw.githubusercontent.com/api-evangelist/nannostomus/refs/heads/main/apis.yml
created: '2024-11-13'
modified: '2026-04-28'
specificationVersion: '0.19'
tags:
- Public Safety
- Sex Offenders
- Government
- Search
- Records
apis:
- aid: nannostomus:nannostomus
  name: Nannostomus Sex Offender API
  tags:
  - Sex Offenders
  - Public Safety
  - Search
  humanURL: https://www.nannostomus.com/api/
  properties:
  - url: https://www.nannostomus.com/api/
    type: Documentation
  - url: https://www.nannostomus.com/api/
    type: Reference
  description: The Nannostomus Sex Offender API enables search of 771k+ offender records by state and name across all 50 U.S.
    states and 14 territories. Records are updated monthly with per-state change reporting and deduplicated within each state.
common:
- type: DomainSecurity
  url: security/nannostomus-domain-security.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/intsurfing
- url: https://www.nannostomus.com/
  type: Website
- url: https://www.nannostomus.com/api/
  type: Documentation
- url: https://www.nannostomus.com/pricing/
  type: Pricing
- url: https://www.nannostomus.com/contact/
  type: Support
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com