Hunter.io Bundle

Email discovery and verification you can run like software. Hunter skills turn Claude Code into a pipeline for finding, verifying, discovering companies, enriching contacts, building lists, cleaning inboxes exports, and exporting to ATS-ready formats—with credit estimates before you spend.

Why this bundle exists

Most teams bounce between Hunter’s UI, Excel, and their ATS. That breaks audit trails and repeatability. These skills wrap Hunter’s APIs with preflight credit estimates (search vs verify), caps (--max-search-credits, --max-verify-credits), and Claude for prioritisation and QA tabs—so the same brief next quarter reproduces the same shape of output.

How you benefit

• Deliverability before outreach — verify-emails surfaces SMTP-grade signals; clean-email-list normalises, dedupes, classifies, and filters with a health score.
• End-to-end lists — build-contact-list chains discover / domain search / finder / verify / enrich with a single credit story.
• Hiring and sales handoffs — export-contacts maps to Greenhouse, Lever, Bullhorn, Hunter lead CSV, or generic spreadsheets your ops team already uses.

Example prompts

When Claude has access to Hunter.io through this bundle’s API integration (with your keys and project configured), you can ask in plain language—for example:

• Given these 50 company domains and role titles, find best-guess emails and verify them before I add anyone to outreach.
• Verify this list of 200 emails from our event and drop anyone risky before we load them into the CRM.
• Build a contact list from these domains with estimated search and verify credits so I don’t overspend.
• Export verified contacts to our Lever CSV template so ops can import without reformatting.

Full power (easy to miss)

• Hunter bills search and verification credits separately; every skill that calls Hunter prints both estimates and can pull GET /account before/after when possible—easy to overlook until you run a big verify batch.
• Hunter is strongest on email; pair with ContactOut (LinkedIn-heavy enrichment) or Apollo (database prospecting), then run verify-emails or find-emails here to validate before campaigns or ATS import.

What you get

Digital download: a ZIP you unzip into your project. You keep instant access after purchase.

Hunter offers a free API tier (limited search and verification credits per month). You can test on a free plan before upgrading. API keys are created in the Hunter dashboard under API.

Dual credits (important)

Hunter bills search credits and verification credits separately. Domain Search, Email Finder, and enrichment endpoints consume search credits; Email Verifier consumes verification credits. Every skill that calls Hunter prints an estimated line for both types, supports --max-search-credits and --max-verify-credits, and reports usage via the free GET /account endpoint before and after when possible.

Included skills

Skill	What it does
find-emails	Email Finder from names + domains or LinkedIn handles → Excel + JSON summary
verify-emails	Email Verifier with deliverability fields + Claude list QA tab
search-domain	Domain Search with filters + Claude prioritisation
discover-companies	Discover (POST) + Email Count + Claude prioritisation
enrich-contacts	Combined enrichment per email → person + company columns
build-contact-list	Chains discover / domain search / finder / verify / enrich with credit estimate
clean-email-list	Normalise, dedupe, classify, verify, filter, multi-tab Excel + health score
export-contacts	Export to xlsx/csv or Greenhouse/Lever/Bullhorn/Hunter lead CSV

Requirements

• HUNTER_API_KEY — from Hunter.io dashboard → API
• ANTHROPIC_API_KEY — for Claude-powered interpretation, scoring, and QA tabs

Compatibility

Works with macOS and Windows (run.sh / run.ps1). Designed for Claude Code and similar assistants.

Support and updates

Technical reference: CLAUDE.md and per-skill README files in the bundle. Release history at the bottom of this page mirrors CHANGELOG.md so you can read version notes before purchase.

Release history

Below is the same content as CHANGELOG.md in this bundle, so you can see version history before purchase. After download, both files ship together in the ZIP.

Changelog

1.0.2 — 2026-04-30

Add .env.example at the bundle root documenting environment variables for this integration (copy to .env). No skill behavior changes.

1.0.1 — 2026-04-30

Maintenance release: refreshed buyer-facing PRODUCT.md release history (mirrored from CHANGELOG.md) and rebuilt the distribution ZIP. No skill behavior changes.

1.0.0 — 2026-04-29

Initial Hunter.io bundle: eight skills for domain search, email finder, verification, discover, combined enrichment, contact list building, list cleaning, and ATS-oriented export. Includes HunterClient with per-endpoint rate limiting (finder, verifier, discover), dual credit reporting via /account, and mocked unit tests for the API layer.