DNS Doctor

DNS Doctor provides a free DNS scanner and tools for domains, offering deterministic copy‑paste fixes for email authentication (SPF, DMARC, DKIM), MX, DNS health, blacklist checks, SSL expiry, global propagation, and reverse DNS lookups. It aims to help users quickly identify and resolve DNS issues without requiring sign‑up or payment.

DNS Doctor publishes 5 API contracts indexed on the APIs.io network, including Domains API, Monitoring API, Scan API, and 2 more. Tagged areas include DNS, DNS Tools, Email Authentication, and Web Application.

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

DNS Doctor’s developer surface includes API reference, authentication, documentation, pricing, signup flow, and 22 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

52.8/100 developing Agent 42/100 agent ready Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

1 published contract 2 Agent Skills

DNSDNS ToolsEmail AuthenticationWeb Application

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 52.8/100 · developing

Contract Quality 14.0 / 21

Developer Ergonomics 5.2 / 17

Access Clarity 14.3 / 17

Operational Transparency 1.7 / 11

Contract Governance 2.2 / 10

Discoverability 4.9 / 9

Regulatory Posture 5.3 / 15

Agent readiness — 42/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 4 / 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 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) 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):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
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
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document

5 more unmet checks in the Agent Readiness table above.

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

Developer Ergonomics scores 30.4 — up to +13.9 composite points
Operational Transparency scores 15.8 — up to +10.9 composite points
Contract Governance scores 22.0 — up to +9.4 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/dnsdoctor-dev/apis.yml: open an issue on github.com/api-evangelist/dnsdoctor-dev 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 →

Standards implemented 2

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

OAuth 2.0 Protected Resource Metadata

measured — observed by APIs.io (verified)

OpenAPI

measured — observed by APIs.io (published)

APIs 5

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

DNS Doctor Domains API

The domains API from DNS Doctor — 5 operation(s) for domains.

DNS Doctor Monitoring API

The monitoring API from DNS Doctor — 4 operation(s) for monitoring.

DNS Doctor Scan API

The scan API from DNS Doctor — 5 operation(s) for scan.

DNS Doctor Tools API

The tools API from DNS Doctor — 3 operation(s) for tools.

DNS Doctor Watch API

The watch API from DNS Doctor — 5 operation(s) for watch.

Agent Skills 2

Packaged agent skills for driving this provider's APIs from an AI assistant.

dnsdoctor-dev-add-and-verify-domain

AGENT SKILL

dnsdoctor-dev-scan-domain

AGENT SKILL

DNS Doctor API pricing

Prices published by DNS Doctor, read 2026-11-05 from dnsdoctor.dev/pricing.

Plan	Price
Free	$0
Monitor	$12/mo
Package	$99 once

Plan details, limits and sources →

Pricing Plans 1

Published pricing tiers and plan structures.

Dnsdoctor Dev Plans Pricing

3 plans

PLANS

Semantic Vocabularies 1

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

Dnsdoctor Dev Context

73 classes · 213 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

DNS Doctor API Rules

58 rules · 48 errors 7 warnings 3 info

SPECTRAL

JSON Schema 6

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

DmarcUpgradeOut

7 properties

JSON SCHEMA

ReadinessOut

16 properties

JSON SCHEMA

ScanReportOut

12 properties

JSON SCHEMA

WatchCreated

13 properties

JSON SCHEMA

WatchPropagationIn

4 properties

JSON SCHEMA

WatchStatus

12 properties

JSON SCHEMA

Security Posture 3

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

Dnsdoctor Dev Authentication

http · 1 scheme

SECURITY

Dnsdoctor Dev Domain Security

TLSv1.3 · DNSSEC · DMARC

SECURITY

Dnsdoctor Dev Vulnerability Disclosure

security.txt · contact published

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Dnsdoctor Dev Agentic Access

23 operations · 14 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

SignUp

SignUp

Documentation 2

Reference material describing how the API behaves

APIReference

APIReference

Documentation

Documentation

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgentSkill

LLMsTxt

WellKnown

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

ErrorCatalog

Conformance

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 6

Authentication, authorization, and security posture

Security

SecurityTxt

TrustCenter

Authentication

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Commercial 4

Pricing, plans, and the legal terms of use

Plans

TermsOfService

PrivacyPolicy

Pricing

Company 1

The organization behind the API

Website

Website

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: dnsdoctor-dev
name: DNS Doctor
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://dnsdoctor.dev/opengraph-image?e11df9e033a19390
description: DNS Doctor provides a free DNS scanner and tools for domains, offering deterministic copy‑paste fixes for email
  authentication (SPF, DMARC, DKIM), MX, DNS health, blacklist checks, SSL expiry, global propagation, and reverse DNS lookups.
  It aims to help users quickly identify and resolve DNS issues without requiring sign‑up or payment.
url: https://artifacts.apis.io/dnsdoctor-dev/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-05 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-11-05'
modified: '2026-11-05'
tags:
- DNS
- DNS Tools
- Email Authentication
- Web Application
tags_raw:
- DNS
- DNS Tools
- Email Authentication
- Free Service
- Web Application
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/dnsdoctor-dev-agentic-access.yml
- type: Plans
  url: plans/dnsdoctor-dev-plans-pricing.yml
- type: Spectral
  url: rules/dnsdoctor-dev-rules.yml
- type: JSONLD
  url: json-ld/dnsdoctor-dev-context.jsonld
- type: Vocabulary
  url: vocabulary/dnsdoctor-dev-vocabulary.yml
- type: AgentSkill
  url: skills/_index.yml
- type: DataModel
  url: data-model/dnsdoctor-dev-data-model.yml
- type: Security
  url: security/dnsdoctor-dev-vulnerability-disclosure.yml
- type: ErrorCatalog
  url: errors/dnsdoctor-dev-problem-types.yml
- type: Conformance
  url: conformance/dnsdoctor-dev-conformance.yml
- type: LLMsTxt
  url: llms/dnsdoctor-dev-llms.txt
- type: SecurityTxt
  url: well-known/dnsdoctor-dev-security.txt
- type: WellKnown
  url: well-known/dnsdoctor-dev-well-known.yml
- type: Hosts
  url: hosts/dnsdoctor-dev-hosts.yml
- type: Vendors
  url: vendors/dnsdoctor-dev-vendors.yml
- type: TrustCenter
  url: https://dnsdoctor.dev/scan/vanta.com
- type: TermsOfService
  url: https://dnsdoctor.dev/terms
- type: PrivacyPolicy
  url: https://dnsdoctor.dev/privacy
- type: APIReference
  url: https://dnsdoctor.dev/api/v1/docs
- type: GitHubOrganization
  url: https://github.com/dnsdoctor
- type: Authentication
  url: authentication/dnsdoctor-dev-authentication.yml
- type: VulnerabilityDisclosure
  url: security/dnsdoctor-dev-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/dnsdoctor-dev-domain-security.yml
- type: Website
  url: https://dnsdoctor.dev/
- type: Documentation
  url: https://dnsdoctor.dev/learn
- type: Pricing
  url: https://dnsdoctor.dev/pricing
- type: SignUp
  url: https://dnsdoctor.dev/login
apis:
- aid: dnsdoctor-dev:dnsdoctor-dev-domains-api
  name: DNS Doctor Domains API
  description: The domains API from DNS Doctor — 5 operation(s) for domains.
  humanURL: https://dnsdoctor.dev/api/v1/docs
  baseURL: https://dnsdoctor.dev/api/v1
  tags:
  - Domains
  tags_raw:
  - domains
  properties:
  - type: OpenAPI
    url: openapi/dnsdoctor-dev-domains-api-openapi.yml
  - type: JSONSchema
    url: json-schema/dnsdoctor-dev-scan-report-out-schema.json
  - type: JSONSchema
    url: json-schema/dnsdoctor-dev-readiness-out-schema.json
  - type: JSONSchema
    url: json-schema/dnsdoctor-dev-watch-status-schema.json
  - type: JSONSchema
    url: json-schema/dnsdoctor-dev-dmarc-upgrade-out-schema.json
  - type: JSONSchema
    url: json-schema/dnsdoctor-dev-watch-propagation-in-schema.json
  - type: JSONSchema
    url: json-schema/dnsdoctor-dev-watch-created-schema.json
- aid: dnsdoctor-dev:dnsdoctor-dev-monitoring-api
  name: DNS Doctor Monitoring API
  description: The monitoring API from DNS Doctor — 4 operation(s) for monitoring.
  humanURL: https://dnsdoctor.dev/api/v1/docs
  baseURL: https://dnsdoctor.dev/api/v1
  tags:
  - Monitoring
  tags_raw:
  - monitoring
  properties:
  - type: OpenAPI
    url: openapi/dnsdoctor-dev-monitoring-api-openapi.yml
  - type: JSONSchema
    url: json-schema/dnsdoctor-dev-scan-report-out-schema.json
  - type: JSONSchema
    url: json-schema/dnsdoctor-dev-readiness-out-schema.json
  - type: JSONSchema
    url: json-schema/dnsdoctor-dev-watch-status-schema.json
  - type: JSONSchema
    url: json-schema/dnsdoctor-dev-dmarc-upgrade-out-schema.json
  - type: JSONSchema
    url: json-schema/dnsdoctor-dev-watch-propagation-in-schema.json
  - type: JSONSchema
    url: json-schema/dnsdoctor-dev-watch-created-schema.json
- aid: dnsdoctor-dev:dnsdoctor-dev-scan-api
  name: DNS Doctor Scan API
  description: The scan API from DNS Doctor — 5 operation(s) for scan.
  humanURL: https://dnsdoctor.dev/api/v1/docs
  baseURL: https://dnsdoctor.dev/api/v1
  tags:
  - Scans
  tags_raw:
  - scan
  properties:
  - type: OpenAPI
    url: openapi/dnsdoctor-dev-scan-api-openapi.yml
  - type: JSONSchema
    url: json-schema/dnsdoctor-dev-scan-report-out-schema.json
  - type: JSONSchema
    url: json-schema/dnsdoctor-dev-readiness-out-schema.json
  - type: JSONSchema
    url: json-schema/dnsdoctor-dev-watch-status-schema.json
  - type: JSONSchema
    url: json-schema/dnsdoctor-dev-dmarc-upgrade-out-schema.json
  - type: JSONSchema
    url: json-schema/dnsdoctor-dev-watch-propagation-in-schema.json
  - type: JSONSchema
    url: json-schema/dnsdoctor-dev-watch-created-schema.json
- aid: dnsdoctor-dev:dnsdoctor-dev-tools-api
  name: DNS Doctor Tools API
  description: The tools API from DNS Doctor — 3 operation(s) for tools.
  humanURL: https://dnsdoctor.dev/api/v1/docs
  baseURL: https://dnsdoctor.dev/api/v1
  tags:
  - Tools
  tags_raw:
  - tools
  properties:
  - type: OpenAPI
    url: openapi/dnsdoctor-dev-tools-api-openapi.yml
  - type: JSONSchema
    url: json-schema/dnsdoctor-dev-scan-report-out-schema.json
  - type: JSONSchema
    url: json-schema/dnsdoctor-dev-readiness-out-schema.json
  - type: JSONSchema
    url: json-schema/dnsdoctor-dev-watch-status-schema.json
  - type: JSONSchema
    url: json-schema/dnsdoctor-dev-dmarc-upgrade-out-schema.json
  - type: JSONSchema
    url: json-schema/dnsdoctor-dev-watch-propagation-in-schema.json
  - type: JSONSchema
    url: json-schema/dnsdoctor-dev-watch-created-schema.json
- aid: dnsdoctor-dev:dnsdoctor-dev-watch-api
  name: DNS Doctor Watch API
  description: The watch API from DNS Doctor — 5 operation(s) for watch.
  humanURL: https://dnsdoctor.dev/api/v1/docs
  baseURL: https://dnsdoctor.dev/api/v1
  tags:
  - Watch
  tags_raw:
  - watch
  properties:
  - type: OpenAPI
    url: openapi/dnsdoctor-dev-watch-api-openapi.yml
  - type: JSONSchema
    url: json-schema/dnsdoctor-dev-scan-report-out-schema.json
  - type: JSONSchema
    url: json-schema/dnsdoctor-dev-readiness-out-schema.json
  - type: JSONSchema
    url: json-schema/dnsdoctor-dev-watch-status-schema.json
  - type: JSONSchema
    url: json-schema/dnsdoctor-dev-dmarc-upgrade-out-schema.json
  - type: JSONSchema
    url: json-schema/dnsdoctor-dev-watch-propagation-in-schema.json
  - type: JSONSchema
    url: json-schema/dnsdoctor-dev-watch-created-schema.json
x-enrichment:
  date: '2026-11-05'
  status: enriched
  artifacts_added: 33
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

DNS Doctor API — frequently asked questions

Does DNS Doctor have an API?

Yes. APIs.io lists 5 APIs from DNS Doctor, including DNS Doctor Domains API, DNS Doctor Monitoring API and DNS Doctor Scan API, and 2 more.

Is there an OpenAPI specification for the DNS Doctor API?

Yes. APIs.io indexes 5 OpenAPI specifications for DNS Doctor, each linked for download from this page.

How do I authenticate with the DNS Doctor API?

DNS Doctor documents its authentication (http · 1 scheme). The details are profiled on APIs.io as Dnsdoctor Dev Authentication.

How much does the DNS Doctor API cost?

DNS Doctor publishes its prices; its Free plan is $0 as of 2026-11-05. APIs.io lists 3 pricing plans for DNS Doctor, with each plan's price, limits and inclusions under Pricing on this page.

Is the DNS Doctor API ready for AI agents?

DNS Doctor has a Kin Score of 52.8 out of 100 (developing) and an Agent Readiness score of 42.0 (agent-ready), scored by API Evangelist on 2026-11-06.

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