fidro-io

Fidro provides a fraud detection API that evaluates email addresses, IPs, VPNs, proxies, and domain risk in a single call. It returns a risk score with recommendations to allow, challenge, or block, and includes features like signup and login monitoring, chargeback prevention, and Stripe transaction scoring. The service offers a free tier with sub‑200 ms response times and paid plans for higher volume.

fidro-io is listed with 2 APIs on the APIs.io network. Tagged areas include Company, FraudDetection, API, RiskAnalysis, and Payments.

The fidro-io catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

fidro-io’s developer surface includes sandbox, authentication, documentation, API reference, getting-started guide, pricing, engineering blog, and 15 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

56.0/100 strong Agent 41/100 agent ready Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

2 APIs

CompanyFraudDetectionAPIRiskAnalysisPayments

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 56.0/100 · strong

Contract Quality 11.3 / 21

Developer Ergonomics 8.5 / 17

Access Clarity 10.6 / 17

Operational Transparency 3.1 / 11

Contract Governance 8.1 / 10

Discoverability 4.9 / 9

Regulatory Posture 4.2 / 15

Agent readiness — 41/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 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

Delegated User Identity 6 / 6

Protected Resource Metadata 5 / 5

Registration Without a Human 6 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

Regulatory Posture applies to this provider. Its tags matched the Payments regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks
Documented Reversibility +6 pts — a reversal operation in the contract, graded up when a window is documented too

5 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 53.4 — up to +11.7 composite points
Developer Ergonomics scores 50.0 — up to +10.0 composite points
Operational Transparency scores 28.4 — up to +9.3 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/fidro-io/apis.yml: open an issue on github.com/api-evangelist/fidro-io to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 2

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

Fidro API

Fraud detection API offering email, IP, VPN, and domain risk checks.

fidro-io API

fidro-io API as documented publicly: 9 operations. Contract generated from the documentation by API Evangelist (2026-10-30); not the provider's own document.

Pricing Plans 1

Published pricing tiers and plan structures.

Fidro Io Plans Pricing

4 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Fidro Io Rate Limits

4 limits

RATE LIMITS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Fidro Io Context

6 classes · 12 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

fidro-io API Rules

10 rules · 8 errors 1 warnings 1 info

SPECTRAL

JSON Schema 6

Standalone JSON Schema definitions for this provider's data models.

GetApiBlocklistResponse

7 properties

JSON SCHEMA

GetApiStatusResponse

3 properties

JSON SCHEMA

PostApiBlocklistRequest

5 properties

JSON SCHEMA

PostApiBlocklistResponse

7 properties

JSON SCHEMA

PostApiDomainLookupRequest

1 properties

JSON SCHEMA

PostApiValidateRequest

1 properties

JSON SCHEMA

Security Posture 2

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

Fidro Io Authentication

1 scheme

SECURITY

Fidro Io Domain Security

TLSv1.3 · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Fidro Io Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Resources

Get Started 3

Portal, sign-up, and the first successful call

Sandbox

Sandbox

Login

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

WellKnown

WellKnown

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

ErrorCatalog

Conformance

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Plans

Plans

Pricing

Pricing

TermsOfService

TermsOfService

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Hosts

Hosts

Source (apis.yml)

aid: fidro-io
name: fidro-io
image: https://fidro.io/og/title.png?eyebrow=Fidro&subtitle=One%20API%20call%20scores%20the%20email%2C%20IP%20and%20network%2C%20remembers%20repeat%20signups%20and%20odd%20logins%2C%20then%20tells%20you%20to%20allow%2C%20challenge%20or%20block.%20Free%20plan%2C%20under%20200ms.&title=Fraud%20Detection%20API%20for%20Fake%20Signups%20and%20Stolen%20Cards&signature=9a5926bdc24452cd01d9cf3c0e790d18dce7a8dfee44e31512a6f33842c5d5ec
description: Fidro provides a fraud detection API that evaluates email addresses, IPs, VPNs, proxies, and domain risk in a
  single call. It returns a risk score with recommendations to allow, challenge, or block, and includes features like signup
  and login monitoring, chargeback prevention, and Stripe transaction scoring. The service offers a free tier with sub‑200 ms
  response times and paid plans for higher volume.
url: https://artifacts.apis.io/fidro-io/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-30 (modular-v1; was harvest)
x-coverage:
  state: unreadable
  reason: no-machine-readable-spec
  detail: Documentation is publicly available but provides no machine‑readable OpenAPI, AsyncAPI, GraphQL, gRPC, or WSDL specifications.
  evidence:
  - url: https://fidro.io/docs/api
    status: 200
  checked: '2026-10-30'
specificationVersion: '0.20'
created: '2026-10-30'
modified: '2026-10-30'
tags:
- Company
- FraudDetection
- API
- RiskAnalysis
- Payments
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: RateLimits
  url: rate-limits/fidro-io-rate-limits.yml
- type: Plans
  url: plans/fidro-io-plans-pricing.yml
- type: Spectral
  url: rules/fidro-io-rules.yml
- type: JSONLD
  url: json-ld/fidro-io-context.jsonld
- type: Vocabulary
  url: vocabulary/fidro-io-vocabulary.yml
- type: DataModel
  url: data-model/fidro-io-data-model.yml
- type: Sandbox
  url: sandbox/fidro-io-sandbox.yml
- type: Authentication
  url: authentication/fidro-io-authentication.yml
- type: ErrorCatalog
  url: errors/fidro-io-problem-types.yml
- type: Conformance
  url: conformance/fidro-io-conformance.yml
- type: LLMsTxt
  url: llms/fidro-io-llms.txt
- type: WellKnown
  url: well-known/fidro-io-well-known.yml
- type: Hosts
  url: hosts/fidro-io-hosts.yml
- type: Login
  url: https://fidro.io/login
- type: DomainSecurity
  url: security/fidro-io-domain-security.yml
- type: Website
  url: https://fidro.io/
- type: Documentation
  url: https://fidro.io/docs
- type: APIReference
  url: https://fidro.io/docs
- type: GettingStarted
  url: https://fidro.io/docs#getting-started
- type: Pricing
  url: https://fidro.io/pricing
- type: Blog
  url: https://fidro.io/blog
- type: TermsOfService
  url: https://fidro.io/
apis:
- name: Fidro API
  description: Fraud detection API offering email, IP, VPN, and domain risk checks.
  humanURL: https://fidro.io/docs/api
  baseURL: https://fidro.io/api
  aid: fidro-io:fidro-api
- aid: fidro-io:fidro-io-api
  name: fidro-io API
  description: 'fidro-io API as documented publicly: 9 operations. Contract generated from the documentation by API Evangelist
    (2026-10-30); not

    the provider''s own document.'
  humanURL: https://fidro.io/docs/api
  properties:
  - type: OpenAPI
    url: openapi/_ae-authored/fidro-io-openapi-generated.yml
    x-provenance: generated
  - type: JSONSchema
    url: json-schema/fidro-io-get-api-blocklist-response-schema.json
  - type: JSONSchema
    url: json-schema/fidro-io-post-api-blocklist-response-schema.json
  - type: JSONSchema
    url: json-schema/fidro-io-post-api-blocklist-request-schema.json
  - type: JSONSchema
    url: json-schema/fidro-io-get-api-status-response-schema.json
  - type: JSONSchema
    url: json-schema/fidro-io-post-api-domain-lookup-request-schema.json
  - type: JSONSchema
    url: json-schema/fidro-io-post-api-validate-request-schema.json
x-enrichment:
  date: '2026-10-30'
  status: enriched
  artifacts_added: 36
  pass: modular-v1
  engine: identity=oss,contract=oss,surfaces=oss,docs=oss,regulatory=oss

fidro-io API — frequently asked questions

Does fidro-io have an API?

Yes. APIs.io lists 2 APIs from fidro-io, including Fidro API and fidro-io API.

Is there an OpenAPI specification for the fidro-io API?

Yes. APIs.io indexes 1 OpenAPI specification for fidro-io, each linked for download from this page.

How do I authenticate with the fidro-io API?

fidro-io documents its authentication (1 scheme). The details are profiled on APIs.io as Fidro Io Authentication.

How much does the fidro-io API cost?

APIs.io lists 4 pricing plans for fidro-io, with each plan's price, limits and inclusions under Pricing Plans on this page.

Is the fidro-io API ready for AI agents?

fidro-io has a Kin Score of 56.0 out of 100 (strong) and an Agent Readiness score of 41.4 (agent-ready), scored by API Evangelist on 2026-10-31.

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