Hunter
Hunter is an email finding, verification and B2B prospecting platform. Its v2 API finds the professional email addresses associated with a company domain, predicts an address for a named person, verifies deliverability, enriches people and companies, discovers target accounts by natural-language query or structured filter, and manages the leads, lead lists and outreach sequences built from those results. Hunter also operates a first-party remote MCP server at https://mcp.hunter.io/mcp exposing roughly 100 tools, and publishes its own packaged Agent Skills, making it one of the few providers whose agent surface is wider than its documented REST contract.
Hunter publishes 22 API contracts indexed on the APIs.io network, including Account API, Campaigns API, Discover API, and 19 more. Tagged areas include Contact Discovery, Email, Email Verification, Lead Generation, and Prospecting.
The Hunter catalog on APIs.io includes 1 event-driven AsyncAPI specification, 1 JSON-LD context, and 2 Spectral governance rulesets.
Hunter’s developer surface includes authentication, developer portal, documentation, pricing, engineering blog, signup flow, changelog, and 66 more developer resources.
What this lets a business do 4
Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →
What people ask Hunter 4
The questions people put to an LLM, and the jobs they hand an agent, that Hunter's APIs answer — each one linked to the operation that does it. Generated by API Evangelist
Kin Score
Markets this provider is in provisional
The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.
| Market | Position | Depth | Registered MCP server | Declares compatibility |
|---|---|---|---|---|
| Agent Skills (SKILL.md packages) | builds-on | 25.2 | - | 1 |
| Salesforce AppExchange (CRM, outbound, business-process automation) | builds-on | 25.2 | - | 1 |
| Browser Extension Stores (company-published Firefox add-ons; Chrome Web Store unreadable) | builds-on | 25.2 | - | 1 |
Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.
Standards implemented 5
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.
APIs 22
Individual APIs this provider publishes, each with its own machine-readable definition.
Hunter Account API
Retrieve account information and usage statistics.
Hunter Campaigns API
Manage email sequences and recipients.
Hunter Discover API
Find companies matching criteria using natural language or filters.
Hunter Leads API
Manage leads stored in Hunter.
Hunter API Keys API
The API Keys API from Hunter — 2 operation(s) for api keys.
Hunter Companies API
The Companies API from Hunter — 8 operation(s) for companies.
Hunter Connected Apps API
The Connected Apps API from Hunter — 3 operation(s) for connected apps.
Hunter Email Accounts API
The Email Accounts API from Hunter — 7 operation(s) for email accounts.
Hunter Enrichment API
The Enrichment API from Hunter — 3 operation(s) for enrichment.
Hunter Feedback API
The Feedback API from Hunter — 1 operation(s) for feedback.
Hunter Finder API
The Finder API from Hunter — 8 operation(s) for finder.
Hunter Lists API
The Lists API from Hunter — 20 operation(s) for lists.
Hunter Messages API
The Messages API from Hunter — 1 operation(s) for messages.
Hunter Multi-Domain Search API
The Multi-Domain Search API from Hunter — 1 operation(s) for multi-domain search.
Hunter Sequences API
The Sequences API from Hunter — 10 operation(s) for sequences.
Hunter Tags API
The Tags API from Hunter — 4 operation(s) for tags.
Hunter Team API
The Team API from Hunter — 1 operation(s) for team.
Hunter Templates API
The Templates API from Hunter — 2 operation(s) for templates.
Hunter Usage API
The Usage API from Hunter — 2 operation(s) for usage.
Hunter Verifier API
The Verifier API from Hunter — 2 operation(s) for verifier.
Hunter Views API
The Views API from Hunter — 2 operation(s) for views.
Hunter Webhooks API
The Webhooks API from Hunter — 2 operation(s) for webhooks.
Scroll for all 22
Postman Collections 1
Ready-to-run Postman collections for exercising this provider's APIs.
Hunter API
POSTMANOpen Collections 13
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
Hunter Account API
OPEN COLLECTIONHunter API
OPEN COLLECTIONHunter Account Campaigns API
OPEN COLLECTIONHunter Account Combined Enrichment API
OPEN COLLECTIONHunter Account Company Enrichment API
OPEN COLLECTIONHunter Account Discover API
OPEN COLLECTIONHunter Account Domain Search API
OPEN COLLECTIONHunter Account Email Count API
OPEN COLLECTIONHunter Account Email Enrichment API
OPEN COLLECTIONHunter Account Email Finder API
OPEN COLLECTIONHunter Account Email Verifier API
OPEN COLLECTIONHunter Account Leads API
OPEN COLLECTIONHunter Account Leads Lists API
OPEN COLLECTIONScroll for all 13
Arazzo Workflows 10
Multi-step API workflows described with the Arazzo specification.
Hunter Account-Guarded Domain Search
Check remaining search quota before running a domain search.
ARAZZOHunter Combined Enrich and Upsert Lead
Combine person and company enrichment for an email, then upsert it as a lead.
ARAZZOHunter Discover, Search, and Count
Discover a target company, search its domain, and count its emails.
ARAZZOHunter Domain Search to Build a Verified List
Search a domain, create a list, verify the top email, and upsert it as a lead.
ARAZZOHunter Domain Search, Find, and Verify
Search a domain for emails, find a named person's address, then verify it.
ARAZZOHunter Enrich, Verify, and Create Lead
Enrich a person from an email, verify the address, and save a verified lead.
ARAZZOHunter Find, Verify, and Add Campaign Recipient
Find a person's email, verify it, and add it to a campaign when valid.
ARAZZOHunter Find, Verify, and Create Lead
Find a person's email, verify it, and only save a lead when it is valid.
ARAZZOHunter Verify and Add to Campaign
Verify an email, add it to a campaign when valid, then start the campaign.
ARAZZOScroll for all 10
MCP Servers 1
Model Context Protocol servers that expose these APIs to AI agents.
Hunter Remote MCP Server
Hunter operates a first-party REMOTE MCP server at https://mcp.hunter.io/mcp using the Streamable HTTP transport. It is documented in Hunter's own API reference ("Model Context ...
MCP SERVERAgent Skills 13
Packaged agent skills for driving this provider's APIs from an AI assistant.
build-sequences
AGENT SKILLcheck-usage
AGENT SKILLcompany-enrichment
AGENT SKILLcompany-lists
AGENT SKILLdiscover
AGENT SKILLdomain-search
AGENT SKILLemail-finder
AGENT SKILLemail-verifier
AGENT SKILLlead-lists
AGENT SKILLmanage-leads
AGENT SKILLperson-enrichment
AGENT SKILLprospecting
AGENT SKILLpush-to-crm
AGENT SKILLScroll for all 13
Pricing Plans 2
Published pricing tiers and plan structures.
Hunter Plans Pricing
PLANSRate Limits 1
Documented rate limits and quota policies.
Hunter Rate Limits
RATE LIMITSFinOps 1
Cost, billing, and metering signals for API financial operations.
Hunter Finops
FINOPSFeatures 7
Notable capabilities this provider offers.
Domain Search
Find all email addresses associated with a domain name along with confidence scores and sources.
Email Finder
Generate the most likely email address for a person given their name and company domain.
Email Verification
Verify the deliverability and validity of email addresses with detailed status reporting.
Lead Management
Store, organize, and manage prospect leads with lists, tags, and CRM-like contact management.
Email Campaigns
Create and manage automated email outreach sequences with recipient tracking and scheduling.
Data Enrichment
Enrich email addresses and domains with personal, company, and firmographic data points.
Company Discovery
Find companies matching ideal customer profiles using natural language queries and advanced filters.
Scroll for all 7
Event Specifications 1
AsyncAPI definitions for this provider's event-driven and streaming APIs.
Hunter Webhooks
ASYNCAPISemantic Vocabularies 1
JSON-LD contexts and semantic vocabularies used across these APIs.
Hunter Context
JSON-LDSpectral Rules 2
Spectral governance rulesets for linting and validating these APIs.
Hunter — jsonschema rules
SPECTRALHunter API Rules
SPECTRALOpenAPI Overlays 25
Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.
Hunter Account Api Overlay
DERIVEDHunter Account Api Phrasing Overlay
GENERATEDHunter Campaigns Api Overlay
DERIVEDHunter Campaigns Api Phrasing Overlay
GENERATEDHunter Discover Api Overlay
DERIVEDHunter Discover Api Phrasing Overlay
GENERATEDHunter Domain Search Api Overlay
DERIVEDHunter Email Count Api Overlay
DERIVEDHunter Email Count Api Phrasing Overlay
GENERATEDHunter Email Finder Api Overlay
DERIVEDHunter Email Finder Api Phrasing Overlay
GENERATEDHunter Full Overlay
DERIVEDHunter Leads Api Overlay
DERIVEDHunter Leads Api Phrasing Overlay
GENERATEDHunter Leads Lists Api Overlay
DERIVEDHunter Leads Lists Api Phrasing Overlay
GENERATEDScroll for all 25
JSON Schema 41
Standalone JSON Schema definitions for this provider's data models.
AccountResult
JSON SCHEMAAccountResult
JSON SCHEMACampaignRecipient
JSON SCHEMACampaign
JSON SCHEMACampaignRecipient
JSON SCHEMACompanyEnrichment
JSON SCHEMACompanyGeoLocation
JSON SCHEMACompanyEnrichment
JSON SCHEMACompanyGeoLocation
JSON SCHEMADiscoverRequest
JSON SCHEMADiscoverResult
JSON SCHEMADiscoverRequest
JSON SCHEMADiscoverResult
JSON SCHEMADomainEmail
JSON SCHEMADomainSearchResult
JSON SCHEMADomainEmail
JSON SCHEMADomainSearchResult
JSON SCHEMAEmailCountResult
JSON SCHEMAEmailFinderResult
JSON SCHEMAEmailVerifierResult
JSON SCHEMAEmailCountResult
JSON SCHEMAEmailFinderResult
JSON SCHEMAEmailVerifierResult
JSON SCHEMAError
JSON SCHEMAGeoLocation
JSON SCHEMAGeoLocation
JSON SCHEMALeadInput
JSON SCHEMALead
JSON SCHEMALeadInput
JSON SCHEMALeadsList
JSON SCHEMALeadsList
JSON SCHEMAMeta
JSON SCHEMAPaginationMeta
JSON SCHEMAPaginationMeta
JSON SCHEMAPersonEnrichment
JSON SCHEMAPersonEnrichment
JSON SCHEMASource
JSON SCHEMAUsageCounter
JSON SCHEMAUsageCounter
JSON SCHEMAVerificationStatus
JSON SCHEMAVerificationStatus
JSON SCHEMAScroll for all 41
JSON Structure 24
JSON Structure definitions describing this provider's data shapes.
Hunter Account Result Structure
JSON STRUCTUREHunter Campaign Recipient Structure
JSON STRUCTUREHunter Campaign Structure
JSON STRUCTUREHunter Company Enrichment Structure
JSON STRUCTUREHunter Company Geo Location Structure
JSON STRUCTUREHunter Discover Request Structure
JSON STRUCTUREHunter Discover Result Structure
JSON STRUCTUREHunter Domain Email Structure
JSON STRUCTUREHunter Domain Search Result Structure
JSON STRUCTUREHunter Email Count Result Structure
JSON STRUCTUREHunter Email Finder Result Structure
JSON STRUCTUREHunter Email Verifier Result Structure
JSON STRUCTUREHunter Error Structure
JSON STRUCTUREHunter Geo Location Structure
JSON STRUCTUREHunter Lead Input Structure
JSON STRUCTUREHunter Lead Structure
JSON STRUCTUREHunter Leads List Structure
JSON STRUCTUREHunter Meta Structure
JSON STRUCTUREHunter Pagination Meta Structure
JSON STRUCTUREHunter Person Enrichment Structure
JSON STRUCTUREHunter Source Structure
JSON STRUCTUREHunter Structure
JSON STRUCTUREHunter Usage Counter Structure
JSON STRUCTUREHunter Verification Status Structure
JSON STRUCTUREScroll for all 24
Examples 23
Example request and response payloads for these APIs.
Hunter Campaign Example
EXAMPLEHunter Domain Email Example
EXAMPLEHunter Error Example
EXAMPLEHunter Geo Location Example
EXAMPLEHunter Lead Example
EXAMPLEHunter Lead Input Example
EXAMPLEHunter Leads List Example
EXAMPLEHunter Meta Example
EXAMPLEHunter Source Example
EXAMPLEHunter Usage Counter Example
EXAMPLEScroll for all 23
Security Posture 3
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Scopes 1
OAuth scopes governing access to this provider's APIs.
Agentic Access 1
Recommended x-agentic-access execution contracts for AI agents.
Use Cases 5
What developers build with this provider.
Sales Prospecting
Find and verify email addresses for sales outreach by searching company domains and building prospect lists.
Lead Qualification
Enrich leads with company and personal data to qualify prospects and prioritize outreach efforts.
Email List Cleaning
Verify large email lists to reduce bounce rates and improve email deliverability.
Account-Based Marketing
Discover key contacts at target accounts using domain search and build targeted outreach campaigns.
Recruitment Outreach
Find professional email addresses for passive candidates at target companies for recruitment campaigns.
Integrations 6
Pre-built integrations with other platforms and tools.
Salesforce
Push verified leads and enriched contacts directly to Salesforce CRM for pipeline management.
HubSpot
Sync leads and contact data with HubSpot CRM for unified sales and marketing workflows.
Pipedrive
Export leads to Pipedrive CRM with enriched contact and company information.
Zapier
Connect Hunter with thousands of apps through Zapier for automated lead processing workflows.
Google Sheets
Export domain search results and verified emails directly to Google Sheets for analysis.
Zoho CRM
Integrate lead data with Zoho CRM for end-to-end sales pipeline management.
Resources
Get Started 5
Portal, sign-up, and the first successful call
Documentation 4
Reference material describing how the API behaves
Agent Surfaces 6
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 20
Pagination, idempotency, versioning, errors, and events
Scroll for all 20
Build 5
SDKs, sample code, and the tooling you integrate with
Access & Security 7
Authentication, authorization, and security posture
Scroll for all 7
Operate 7
Status, limits, changes, and where to get help
Scroll for all 7
Commercial 6
Pricing, plans, and the legal terms of use
Company 3
The organization behind the API
Other 10
Properties that don't map to a standard resource type
Scroll for all 10
Source (apis.yml)
Hunter API — frequently asked questions
Does Hunter have an API?
Yes. APIs.io lists 22 APIs from Hunter, including Hunter Account API, Hunter Campaigns API and Hunter Discover API, and 19 more.
Is there an OpenAPI specification for the Hunter API?
Yes. APIs.io indexes 22 OpenAPI specifications for Hunter, each linked for download from this page.
How do I authenticate with the Hunter API?
Hunter documents its authentication (apiKey/http/oauth2 · 4 schemes). The details are profiled on APIs.io as Hunter Authentication.
How much does the Hunter API cost?
APIs.io lists 9 pricing plans for Hunter, with each plan's price, limits and inclusions under Pricing Plans on this page.
Does Hunter have an MCP server?
Yes. APIs.io lists 1 MCP server for Hunter: Hunter operates a first-party REMOTE MCP server at https://mcp.hunter.io/mcp using the Streamable HTTP transport. It is documented in Hunter's own API reference ("Model Context Protocol (MCP)" section
Is the Hunter API ready for AI agents?
Hunter has a Kin Score of 70.7 out of 100 (exemplar) and an Agent Readiness score of 59.4 (agent-native), scored by API Evangelist on 2026-11-02.
Work with this as data
Every provider here is available over the APIs.io API and to AI agents over MCP.