emailverifier-dev

emailverifier.dev provides a real‑time email verification API that helps developers detect invalid, disposable, or mistyped email addresses at signup, login, or any point of contact collection. The service returns structured risk signals, mailbox existence, and actionable recommendations, with a free tier of 1,000 checks and transparent pricing for higher volumes.

emailverifier-dev publishes 3 API contracts indexed on the APIs.io network: Domains API, Usage API, and Verification API. Tagged areas include Email, Verification, API, SaaS, and DataQuality.

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

emailverifier-dev’s developer surface includes authentication, documentation, API reference, support, engineering blog, pricing, signup flow, and 22 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

56.9/100 strong Agent 53/100 agent ready Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

1 published contract 1 MCP Servers 3 Agent Skills

Email VerificationAPISaaSDataQuality

Kin Score

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

Composite quality — 56.9/100 · strong

Contract Quality 13.1 / 21

Developer Ergonomics 8.4 / 17

Access Clarity 10.8 / 17

Operational Transparency 0.0 / 11

Contract Governance 8.1 / 10

Discoverability 5.5 / 9

Regulatory Posture 5.1 / 15

Agent readiness — 53/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 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 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 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 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):

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
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
Agentic Commerce Well-Known Document +5 pts — a parsing /.well-known/ucp.json or acp.json declaring a version and at least one service — `self` when its endpoints are on the provider's own domain, `platform` when they are on a vendor's
Dry-Run / Simulate Mode +4 pts — OpenAPI: destructive operations expose a dry_run / simulate / preview / validate_only parameter

2 more unmet checks in the Agent Readiness table above.

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

Operational Transparency scores 0.0 — up to +13.0 composite points
Developer Ergonomics scores 49.3 — up to +10.1 composite points
Contract Quality scores 61.6 — up to +9.6 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/emailverifier-dev/apis.yml: open an issue on github.com/api-evangelist/emailverifier-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 →

APIs 3

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

emailverifier-dev Domains API

Classify email domains.

emailverifier-dev Usage API

Monitor project credit usage.

emailverifier-dev Verification API

Verify complete email addresses.

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

emailverifier-dev MCP Server

Remote MCP server at emailverifier.dev.

MCP SERVER

Agent Skills 3

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

classify-domain

AGENT SKILL

get-usage

AGENT SKILL

verify-email

AGENT SKILL

Pricing Plans 1

Published pricing tiers and plan structures.

Emailverifier Dev Plans Pricing

2 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Emailverifier Dev Rate Limits

0 limits

RATE LIMITS

Semantic Vocabularies 1

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

Emailverifier Dev Context

8 classes · 17 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

emailverifier-dev API Rules

18 rules · 16 errors 1 warnings 1 info

SPECTRAL

JSON Schema 3

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

DomainClassification

4 properties

JSON SCHEMA

UsageSummary

4 properties

JSON SCHEMA

VerificationResult

6 properties

JSON SCHEMA

Security Posture 2

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

Emailverifier Dev Authentication

2 schemes

SECURITY

Emailverifier Dev Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Emailverifier Dev Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Agentic Access 1

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

Emailverifier Dev Agentic Access

3 operations · 1 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

SignUp

SignUp

Login

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgentSkill

LLMsTxt

MCPServer

WellKnown

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

ErrorCatalog

Conformance

Build 3

SDKs, sample code, and the tooling you integrate with

ToolCrosswalk

ToolCrosswalk

SDKs

SDKs

Packages

Packages

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 4

Pricing, plans, and the legal terms of use

Plans

Pricing

TermsOfService

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: emailverifier-dev
name: emailverifier-dev
description: emailverifier.dev provides a real‑time email verification API that helps developers detect invalid, disposable,
  or mistyped email addresses at signup, login, or any point of contact collection. The service returns structured risk signals,
  mailbox existence, and actionable recommendations, with a free tier of 1,000 checks and transparent pricing for higher volumes.
image: https://emailverifier.dev/brand/logo-light.svg
url: https://artifacts.apis.io/emailverifier-dev/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)
specificationVersion: '0.20'
created: '2026-10-30'
modified: '2026-10-30'
tags:
- Email
- Verification
- API
- SaaS
- DataQuality
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/emailverifier-dev-agentic-access.yml
- type: Plans
  url: plans/emailverifier-dev-plans-pricing.yml
- type: Spectral
  url: rules/emailverifier-dev-rules.yml
- type: JSONLD
  url: json-ld/emailverifier-dev-context.jsonld
- type: Vocabulary
  url: vocabulary/emailverifier-dev-vocabulary.yml
- type: AgentSkill
  url: skills/_index.yml
- type: DataModel
  url: data-model/emailverifier-dev-data-model.yml
- type: Authentication
  url: authentication/emailverifier-dev-authentication.yml
- type: ErrorCatalog
  url: errors/emailverifier-dev-problem-types.yml
- type: Conformance
  url: conformance/emailverifier-dev-conformance.yml
- type: LLMsTxt
  url: llms/emailverifier-dev-llms.txt
- type: ToolCrosswalk
  url: mcp/emailverifier-dev-tool-crosswalk.yml
- type: MCPServer
  url: mcp/emailverifier-dev-mcp.yml
- type: WellKnown
  url: well-known/emailverifier-dev-well-known.yml
- type: Hosts
  url: hosts/emailverifier-dev-hosts.yml
- type: Vendors
  url: vendors/emailverifier-dev-vendors.yml
- type: SDKs
  url: packages/emailverifier-dev-packages.yml
- type: Packages
  url: packages/emailverifier-dev-packages.yml
- type: DomainSecurity
  url: security/emailverifier-dev-domain-security.yml
- type: Website
  url: https://emailverifier.dev/
- type: Documentation
  url: https://emailverifier.dev/docs/api
- type: APIReference
  url: https://emailverifier.dev/docs/api
- type: Support
  url: https://emailverifier.dev/contact
- type: Blog
  url: https://emailverifier.dev/blog/
- type: Pricing
  url: https://emailverifier.dev/pricing
- type: SignUp
  url: https://emailverifier.dev/register
- type: Login
  url: https://emailverifier.dev/login
- type: TermsOfService
  url: https://emailverifier.dev/legal/terms
- type: PrivacyPolicy
  url: https://emailverifier.dev/legal/privacy
apis:
- aid: emailverifier-dev:emailverifier-dev-domains-api
  name: emailverifier-dev Domains API
  description: Classify email domains.
  humanURL: https://emailverifier.dev/docs/api
  baseURL: https://emailverifier.dev
  tags:
  - Domains
  properties:
  - type: OpenAPI
    url: openapi/emailverifier-dev-domains-api-openapi.yml
  - type: JSONSchema
    url: json-schema/emailverifier-dev-verification-result-schema.json
  - type: JSONSchema
    url: json-schema/emailverifier-dev-domain-classification-schema.json
  - type: JSONSchema
    url: json-schema/emailverifier-dev-usage-summary-schema.json
- aid: emailverifier-dev:emailverifier-dev-usage-api
  name: emailverifier-dev Usage API
  description: Monitor project credit usage.
  humanURL: https://emailverifier.dev/docs/api
  baseURL: https://emailverifier.dev
  tags:
  - Usage
  properties:
  - type: OpenAPI
    url: openapi/emailverifier-dev-usage-api-openapi.yml
  - type: JSONSchema
    url: json-schema/emailverifier-dev-verification-result-schema.json
  - type: JSONSchema
    url: json-schema/emailverifier-dev-domain-classification-schema.json
  - type: JSONSchema
    url: json-schema/emailverifier-dev-usage-summary-schema.json
- aid: emailverifier-dev:emailverifier-dev-verification-api
  name: emailverifier-dev Verification API
  description: Verify complete email addresses.
  humanURL: https://emailverifier.dev/docs/api
  baseURL: https://emailverifier.dev
  tags:
  - Verification
  properties:
  - type: OpenAPI
    url: openapi/emailverifier-dev-verification-api-openapi.yml
  - type: JSONSchema
    url: json-schema/emailverifier-dev-verification-result-schema.json
  - type: JSONSchema
    url: json-schema/emailverifier-dev-domain-classification-schema.json
  - type: JSONSchema
    url: json-schema/emailverifier-dev-usage-summary-schema.json
x-enrichment:
  date: '2026-10-30'
  status: enriched
  artifacts_added: 37
  pass: modular-v1
  engine: identity=oss,contract=oss,surfaces=oss,docs=oss,regulatory=oss

emailverifier-dev API — frequently asked questions

Does emailverifier-dev have an API?

Yes. APIs.io lists 3 APIs from emailverifier-dev, including emailverifier-dev Domains API, emailverifier-dev Usage API and emailverifier-dev Verification API.

Is there an OpenAPI specification for the emailverifier-dev API?

Yes. APIs.io indexes 3 OpenAPI specifications for emailverifier-dev, each linked for download from this page.

How do I authenticate with the emailverifier-dev API?

emailverifier-dev documents its authentication (2 schemes). The details are profiled on APIs.io as Emailverifier Dev Authentication.

How much does the emailverifier-dev API cost?

APIs.io lists 2 pricing plans for emailverifier-dev, with each plan's price, limits and inclusions under Pricing Plans on this page.

Does emailverifier-dev have an MCP server?

Yes. APIs.io lists 1 MCP server for emailverifier-dev: Remote MCP server at emailverifier.dev.

Is the emailverifier-dev API ready for AI agents?

emailverifier-dev has a Kin Score of 56.9 out of 100 (strong) and an Agent Readiness score of 52.7 (agent-ready), scored by API Evangelist on 2026-10-31.

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