aid: hunter-io
url: https://raw.githubusercontent.com/api-evangelist/hunter-io/refs/heads/main/apis.yml
apis:
- aid: hunter-io:hunter-domain-search-api
  name: Hunter Domain Search API
  tags:
  - Email Finder
  - Lead Generation
  - Domain Search
  humanURL: https://hunter.io/api-documentation/v2#domain-search
  properties:
  - url: https://hunter.io/api-documentation/v2#domain-search
    type: Documentation
  - url: openapi/hunter-domain-search-api-openapi.yml
    type: OpenAPI
  - url: json-schema/hunter-email-schema.json
    type: JSONSchema
  - url: json-ld/hunter-io-context.jsonld
    type: JSONLD
  - url: examples/hunter-domain-search-example.json
    type: Examples
  - type: NaftikoCapability
    url: capabilities/domain-search.yaml
  description: Search for all email addresses associated with a domain name or company. Returns the inferred email
    pattern, organization metadata, and a list of emails with confidence scores, departments, seniority,
    verification status, and observed sources. Costs 1 credit per request.
- aid: hunter-io:hunter-email-finder-api
  name: Hunter Email Finder API
  tags:
  - Email Finder
  - Lead Generation
  humanURL: https://hunter.io/api-documentation/v2#email-finder
  properties:
  - url: https://hunter.io/api-documentation/v2#email-finder
    type: Documentation
  - url: openapi/hunter-email-finder-api-openapi.yml
    type: OpenAPI
  - url: json-schema/hunter-email-schema.json
    type: JSONSchema
  - url: examples/hunter-email-finder-example.json
    type: Examples
  - type: NaftikoCapability
    url: capabilities/email-finder.yaml
  description: Generate or retrieve the most likely email address for a named person at a company. Accepts
    first/last name, full name, or LinkedIn handle alongside a domain or company. Returns confidence score,
    position, social handles, sources, and verification status. Costs 1 credit per request.
- aid: hunter-io:hunter-email-verifier-api
  name: Hunter Email Verifier API
  tags:
  - Email Verifier
  - Deliverability
  humanURL: https://hunter.io/api-documentation/v2#email-verifier
  properties:
  - url: https://hunter.io/api-documentation/v2#email-verifier
    type: Documentation
  - url: openapi/hunter-email-verifier-api-openapi.yml
    type: OpenAPI
  - url: json-schema/hunter-verification-schema.json
    type: JSONSchema
  - url: examples/hunter-email-verifier-example.json
    type: Examples
  - type: NaftikoCapability
    url: capabilities/email-verifier.yaml
  description: Verify the deliverability of an email address through MX-record inspection, SMTP connection checks,
    catch-all detection, disposable-domain detection, webmail detection, and Hunter's own database lookup.
    Returns a normalized status (valid, invalid, accept_all, webmail, disposable, unknown) plus a 0-100 confidence
    score. May return 202 while verification is in flight.
- aid: hunter-io:hunter-email-count-api
  name: Hunter Email Count API
  tags:
  - Email Finder
  - Counts
  humanURL: https://hunter.io/api-documentation/v2#email-count
  properties:
  - url: https://hunter.io/api-documentation/v2#email-count
    type: Documentation
  - url: openapi/hunter-email-count-api-openapi.yml
    type: OpenAPI
  - type: NaftikoCapability
    url: capabilities/email-count.yaml
  description: Free, unauthenticated endpoint returning the total number of email addresses Hunter has indexed for
    a domain or company, broken down by personal/generic, department, and seniority. Does not consume credits.
- aid: hunter-io:hunter-discover-api
  name: Hunter Discover API
  tags:
  - Discover
  - Prospecting
  - Lead Generation
  humanURL: https://hunter.io/api-documentation/v2#discover
  properties:
  - url: https://hunter.io/api-documentation/v2#discover
    type: Documentation
  - url: openapi/hunter-discover-api-openapi.yml
    type: OpenAPI
  - type: NaftikoCapability
    url: capabilities/discover.yaml
  description: Find companies matching a target customer profile using a natural-language query or structured
    filters across industry, headcount, location, technology stack, funding, and keywords. Powers Hunter's
    prospecting workflows and feeds Domain Search and Email Finder. Premium filters (similar_to, technology,
    funding, year_founded) require a higher plan.
- aid: hunter-io:hunter-enrichment-api
  name: Hunter Enrichment API
  tags:
  - Enrichment
  - Person
  - Company
  humanURL: https://hunter.io/api-documentation/v2#enrichment
  properties:
  - url: https://hunter.io/api-documentation/v2#enrichment
    type: Documentation
  - url: openapi/hunter-enrichment-api-openapi.yml
    type: OpenAPI
  - type: NaftikoCapability
    url: capabilities/enrichment.yaml
  description: Person, company, and combined enrichment. Turn an email or LinkedIn handle into a rich person
    profile (name, role, seniority, social handles, geo), turn a domain into a company profile (industry,
    location, technology stack, funding, metrics), or combine both in a single call. Supports a
    `clearbit_format=true` flag for drop-in Clearbit migration.
- aid: hunter-io:hunter-account-api
  name: Hunter Account API
  tags:
  - Account
  - Usage
  - FinOps
  humanURL: https://hunter.io/api-documentation/v2#account
  properties:
  - url: https://hunter.io/api-documentation/v2#account
    type: Documentation
  - url: openapi/hunter-account-api-openapi.yml
    type: OpenAPI
  - type: NaftikoCapability
    url: capabilities/account.yaml
  description: Returns information about the authenticated Hunter account, including plan name and level, credit
    reset date, team id, and per-meter usage counters (searches, verifications, credits) with used/available
    splits. Useful for FinOps and pre-flight quota checks.
- aid: hunter-io:hunter-leads-api
  name: Hunter Leads API
  tags:
  - Leads
  - CRM
  - Campaigns
  humanURL: https://hunter.io/api-documentation/v2#leads
  properties:
  - url: https://hunter.io/api-documentation/v2#leads
    type: Documentation
  - url: openapi/hunter-leads-api-openapi.yml
    type: OpenAPI
  - url: json-schema/hunter-lead-schema.json
    type: JSONSchema
  - type: NaftikoCapability
    url: capabilities/leads.yaml
  description: Manage leads saved in your Hunter account. Full CRUD plus upsert and filtered list, with
    pagination, query search, leads-list scoping, verification and sending-status filters, and custom attributes.
    Leads power Hunter's Campaigns surface and integrate with Hunter Discover and Email Finder. Lead operations
    do not consume credits.
name: Hunter
tags:
- Email Finder
- Email Verifier
- Lead Generation
- Outreach
- Prospecting
- Enrichment
- Sales
- Marketing
kind: contract
image: https://kinlane-productions2.s3.amazonaws.com/apis-json/apis-json-logo.jpg
access: 3rd-Party
common:
- type: Portal
  url: https://hunter.io
- type: Documentation
  url: https://hunter.io/api-documentation
- type: Documentation
  url: https://hunter.io/api-documentation/v2
- type: GettingStarted
  url: https://hunter.io/api-documentation/v2#introduction
- type: Authentication
  url: https://hunter.io/api-documentation/v2#authentication
- type: RateLimits
  url: https://hunter.io/api-documentation/v2#rate-limiting
- type: Errors
  url: https://hunter.io/api-documentation/v2#errors
- type: ChangeLog
  url: https://hunter.io/api-documentation/v2#changelog
- type: Blog
  url: https://hunter.io/blog
- type: SignUp
  url: https://hunter.io/users/sign_up
- type: PrivacyPolicy
  url: https://hunter.io/privacy
- type: TermsOfService
  url: https://hunter.io/terms
- type: StatusPage
  url: https://status.hunter.io
- type: Support
  url: https://hunter.io/contact
- type: GitHubOrganization
  url: https://github.com/hunter-io
- url: https://chrome.google.com/webstore/detail/hunter-find-email-address/hgmhmanijnjhaffoampdlllchpolkdnj
  name: Hunter Chrome Extension
  type: Plugin
- url: https://addons.mozilla.org/en-US/firefox/addon/hunterio/
  name: Hunter Firefox Add-on
  type: Plugin
- url: https://hunter.io/integrations/salesforce
  name: Salesforce Integration
  type: Integration
- url: https://hunter.io/integrations/hubspot
  name: HubSpot Integration
  type: Integration
- url: https://hunter.io/integrations/zapier
  name: Zapier Integration
  type: Integration
- url: https://hunter.io/integrations/pipedrive
  name: Pipedrive Integration
  type: Integration
- url: https://hunter.io/integrations/zoho
  name: Zoho CRM Integration
  type: Integration
- url: https://hunter.io/email-pattern
  name: Email Pattern Finder
  type: Tool
- url: https://hunter.io/email-verifier
  name: Email Verifier Tool
  type: Tool
- url: https://hunter.io/email-finder
  name: Email Finder Tool
  type: Tool
- url: https://hunter.io/bulks
  name: Bulk Tasks
  type: Tool
- url: https://hunter.io/companies
  name: Hunter Companies Directory
  type: Tool
- url: https://hunter.io/templates
  name: Cold Email Templates
  type: Resource
- url: https://hunter.io/email-marketing-glossary
  name: Email Marketing Glossary
  type: Glossary
- url: https://github.com/hunter-io/claude-plugin
  name: Hunter Claude Plugin
  type: Plugin
- url: https://github.com/hunter-io/chatgpt-mcp
  name: Hunter MCP Server for ChatGPT
  type: Tool
- url: https://github.com/hunter-io/hunter-mcp
  name: Hunter MCP Integration (archived)
  type: Tool
- url: https://github.com/hunter-io/mcp-oauth-proxy
  name: MCP OAuth Proxy
  type: Tool
- url: https://github.com/hunter-io/baseimage-ruby
  name: Hunter Ruby Base Image
  type: Tool
- url: https://github.com/hunter-io/sentry-ruby
  name: Sentry Ruby (Hunter fork)
  type: SDK
- url: plans/hunter-io-plans-pricing.yml
  type: Plans
- url: rate-limits/hunter-io-rate-limits.yml
  type: RateLimits
- url: finops/hunter-io-finops.yml
  type: FinOps
- url: vocabulary/hunter-io-vocabulary.yml
  type: Vocabulary
- url: rules/hunter-io-rules.yml
  type: SpectralRules
- url: json-structure/hunter-io-structure.json
  type: JSONStructure
- type: Features
  data:
  - Domain Search returns all emails for a domain with sources, confidence, department, and seniority
  - Email Finder predicts the most likely address for a person at a company with 0-100 confidence
  - Email Verifier runs MX, SMTP, regex, disposable, webmail, accept-all, and block checks plus database lookup
  - Email Count is free and unauthenticated for pre-flight sizing of a domain's email footprint
  - Discover API for company prospecting via natural language or structured filters
  - Person, company, and combined enrichment with optional Clearbit-shape response for drop-in migration
  - Leads API with CRUD, upsert, filtered list, custom attributes, and lead-list scoping
  - Campaigns API for outbound sequences, recipients, opens, clicks, replies, and unsubscribes
  - Account API returns plan, reset date, and per-meter usage counters for FinOps
  - Three auth modes: api_key query, X-API-KEY header, or Authorization Bearer
  - Token-bucket-style per-endpoint rate limits with 429 responses (5-15 rps, 50-500 rpm)
  - Monthly credit allowances per plan with reset_date semantics
  - Chrome and Firefox browser extensions, Google Sheets add-on, and Bulk Tasks UI
  - Native integrations with Salesforce, HubSpot, Zapier, Pipedrive, Zoho CRM, and many outbound tools
  - Hunter MCP server and ChatGPT MCP server for agentic email-finder workflows
  - Hunter Claude Plugin for find, verify, and enrich workflows inside Claude
  - GDPR-aligned data handling with 451 responses on restricted personal data
  sources:
  - https://hunter.io/api-documentation
  - https://hunter.io/pricing
  - https://hunter.io/api
  - https://github.com/hunter-io
  updated: '2026-05-25'
created: '2026-05-25T00:00:00.000Z'
modified: '2026-05-25'
position: Consuming
description: Hunter.io is an email-intelligence and outbound platform that finds, verifies, and enriches
  professional email addresses at scale. Its public APIs cover Domain Search, Email Finder, Email Verifier, Email
  Count, Discover (company prospecting), Person/Company/Combined Enrichment, Leads management, and Account/usage
  inspection. Credit-based metering, plan-tiered monthly allowances, and per-endpoint rate limits make it a
  reference example of a usage-based B2B data API.
maintainers:
- FN: Kin Lane
  email: info@apievangelist.com
  X: apievangelist
  url: https://apievangelist.com
specificationVersion: '0.16'