Agent skill

Email Finder Hunter

by gooseworks-ai in gooseworks-ai/goose-skills

Email finder and verifier - find emails, verify deliverability, discover companies

Install Email Finder Hunter

skills CLI

$ npx skills add gooseworks-ai/goose-skills --skill email-finder-hunter -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install gooseworks-ai/goose-skills email-finder-hunter --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/gooseworks-ai/goose-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/lead-generation/capabilities/email-finder-hunter .claude/skills/email-finder-hunter && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "email-finder-hunter" agent skill from https://github.com/gooseworks-ai/goose-skills/tree/main/skills/lead-generation/capabilities/email-finder-hunter into .claude/skills/email-finder-hunter/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "email-finder-hunter", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/gooseworks-ai/goose-skills/tree/main/skills/lead-generation/capabilities/email-finder-hunter

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add gooseworks-ai/goose-skills --skill email-finder-hunter -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install gooseworks-ai/goose-skills email-finder-hunter --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/gooseworks-ai/goose-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/lead-generation/capabilities/email-finder-hunter .agents/skills/email-finder-hunter && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "email-finder-hunter" agent skill from https://github.com/gooseworks-ai/goose-skills/tree/main/skills/lead-generation/capabilities/email-finder-hunter into .agents/skills/email-finder-hunter/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "email-finder-hunter", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add gooseworks-ai/goose-skills --skill email-finder-hunter -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install gooseworks-ai/goose-skills email-finder-hunter --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/gooseworks-ai/goose-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/lead-generation/capabilities/email-finder-hunter .cursor/skills/email-finder-hunter && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "email-finder-hunter" agent skill from https://github.com/gooseworks-ai/goose-skills/tree/main/skills/lead-generation/capabilities/email-finder-hunter into .cursor/skills/email-finder-hunter/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "email-finder-hunter", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/gooseworks-ai/goose-skills.git --path skills/lead-generation/capabilities/email-finder-hunter

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add gooseworks-ai/goose-skills --skill email-finder-hunter -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install gooseworks-ai/goose-skills email-finder-hunter --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/gooseworks-ai/goose-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/lead-generation/capabilities/email-finder-hunter .gemini/skills/email-finder-hunter && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "email-finder-hunter" agent skill from https://github.com/gooseworks-ai/goose-skills/tree/main/skills/lead-generation/capabilities/email-finder-hunter into .gemini/skills/email-finder-hunter/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "email-finder-hunter", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install gooseworks-ai/goose-skills email-finder-hunter

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add gooseworks-ai/goose-skills --skill email-finder-hunter -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/gooseworks-ai/goose-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/lead-generation/capabilities/email-finder-hunter .github/skills/email-finder-hunter && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "email-finder-hunter" agent skill from https://github.com/gooseworks-ai/goose-skills/tree/main/skills/lead-generation/capabilities/email-finder-hunter into .github/skills/email-finder-hunter/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "email-finder-hunter", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add gooseworks-ai/goose-skills --skill email-finder-hunter -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install gooseworks-ai/goose-skills email-finder-hunter --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/gooseworks-ai/goose-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/lead-generation/capabilities/email-finder-hunter .opencode/skills/email-finder-hunter && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "email-finder-hunter" agent skill from https://github.com/gooseworks-ai/goose-skills/tree/main/skills/lead-generation/capabilities/email-finder-hunter into .opencode/skills/email-finder-hunter/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "email-finder-hunter", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: email-finder-hunter
GitHub stars: 1.2k
Used in: 1 other repo
Token cost: ~1.7k tokens
SKILL.md length: 517 words
Files: 2
Skills in repo: 273
Repo updated: Oct 8, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

Email finder and verifier - find emails, verify deliverability, discover companies

Works in 5 steps: Sales Outreach: Find verified emails at… → Lead Generation: Build email lists by… → Email Validation: Clean lists before… → …
Tasks that involve Transactional email
SKILL.md covers Setup, Capabilities, Usage and Use Cases, plus 1 more section
Calls curl, python3 and npx; reaches api.gooseworks.ai; needs GOOSEWORKS_API_KEY

What it does

Email Finder Hunter is an agent skill from gooseworks-ai/goose-skills. Email finder and verifier - find emails, verify deliverability, discover companies

Its SKILL.md is about 1.7k tokens, which your agent loads only when the skill is triggered. The skill folder holds 1 other file (for example `skill.meta.json`).

It sits in Backend & APIs, covering Transactional email. The repository describes itself as: Library of Growth & GTM skills + data APIs for Claude Code, Codex, Cursor to run ads, social, content, lead gen, seo and data scraping. The licence is MIT.

When your agent uses it

Tasks that involve Transactional email

Example prompts

“/email-finder-hunter”

Requirements

Python 3
Node.js
A credential in GOOSEWORKS_API_KEY

Workflow steps

5 steps, taken from the first numbered list in SKILL.md.

Sales Outreach: Find verified emails at target companies
Lead Generation: Build email lists by domain
Email Validation: Clean lists before campaigns
Company Research: Find companies matching criteria
Contact Enrichment: Get full profiles from emails

What it can do on your machine

Read from SKILL.md and the folder at commit c650c6d. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
- curl
- python3
- npx
From the folder's file list and the shell code blocks in SKILL.md.
Network
Hosts in commands or code, which the agent is likely to contact:
- api.gooseworks.ai
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names these keys or tokens, usually read from environment variables:
- GOOSEWORKS_API_KEY
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Email Finder Hunter loads about 1.7k tokens when it runs. Until then it costs about 26 tokens; SKILL.md has 517 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~26
When it runs · the whole SKILL.md, loaded when a task matches: ~1.7k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from gooseworks-ai/goose-skills at commit c650c6d, republished under its MIT licence (© gooseworks-ai). 517 words, ~1,743 tokens.

Download SKILL.mdSave it as .claude/skills/email-finder-hunter/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.

name: email-finder-hunter
description: Email finder and verifier - find emails, verify deliverability, discover companies
source: orthogonal

Hunter - Email Intelligence

Setup

Read your credentials from ~/.gooseworks/credentials.json:

bash

export GOOSEWORKS_API_KEY=$(python3 -c "import json;print(json.load(open('$HOME/.gooseworks/credentials.json'))['api_key'])")
export GOOSEWORKS_API_BASE=$(python3 -c "import json;print(json.load(open('$HOME/.gooseworks/credentials.json')).get('api_base','https://api.gooseworks.ai'))")

If ~/.gooseworks/credentials.json does not exist, tell the user to run: npx gooseworks login

All endpoints use Bearer auth: -H "Authorization: Bearer $GOOSEWORKS_API_KEY"

Find email addresses, verify deliverability, and discover companies.

Capabilities

Combined Enrichment: Get both person AND company information from an email address in a single request
Email Enrichment: Get detailed person information from an email address - name, location, employment, social profiles
Email Count: Get count of email addresses we have for a domain, broken down by department and seniority
Discover Companies: Find companies matching criteria using filters or natural language
Company Enrichment: Get detailed company information from a domain - industry, description, location, size, tech stack, funding
Domain Search: Find all email addresses for a domain
Email Finder: Find the most likely email address for a person given their name and company domain
Email Verifier: Verify if an email address is deliverable

Usage

Combined Enrichment

Get both person AND company information from an email address in a single request.

Parameters:

email* (string) - Email address to enrich

bash

curl -s -X POST $GOOSEWORKS_API_BASE/v1/proxy/orthogonal/run \
  -H "Authorization: Bearer $GOOSEWORKS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"api":"hunter","path":"/v2/combined/find","query":{"email":"jane@company.com"}}'

Email Enrichment

Get detailed person information from an email address - name, location, employment, social profiles.

Parameters:

email (string) - Email address to enrich
linkedin_handle (string) - LinkedIn handle to enrich

bash

curl -s -X POST $GOOSEWORKS_API_BASE/v1/proxy/orthogonal/run \
  -H "Authorization: Bearer $GOOSEWORKS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"api":"hunter","path":"/v2/people/find","query":{"email":"john@company.com"}}'

Email Count

Get count of email addresses we have for a domain, broken down by department and seniority. FREE endpoint.

Parameters:

domain (string) - Domain to count emails for
company (string) - Company name (domain preferred)
type (string) - Filter: personal or generic

bash

curl -s -X POST $GOOSEWORKS_API_BASE/v1/proxy/orthogonal/run \
  -H "Authorization: Bearer $GOOSEWORKS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"api":"hunter","path":"/v2/email-count","query":{"domain":"google.com"}}'

Discover Companies

Find companies matching criteria using filters or natural language. Returns up to 100 companies per request. FREE endpoint.

Parameters:

query (string) - Natural language search (e.g. Companies in Europe in Tech)
headquarters_location (object) - Filter by HQ location
industry (object) - Filter by industry
headcount (array) - Filter by employee count ranges
limit (integer) - Max results (default 100)
offset (integer) - Skip N results for pagination

bash

curl -s -X POST $GOOSEWORKS_API_BASE/v1/proxy/orthogonal/run \
  -H "Authorization: Bearer $GOOSEWORKS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"api":"hunter","path":"/v2/discover","body":{"query":"AI startups in San Francisco"}}'

Show full SKILL.md (211 more words)Show less

Company Enrichment

Get detailed company information from a domain - industry, description, location, size, tech stack, funding.

Parameters:

domain* (string) - Company domain to enrich (e.g. hunter.io)

bash

curl -s -X POST $GOOSEWORKS_API_BASE/v1/proxy/orthogonal/run \
  -H "Authorization: Bearer $GOOSEWORKS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"api":"hunter","path":"/v2/companies/find","query":{"domain":"anthropic.com"}}'

Domain Search

Find all email addresses for a domain. Returns emails with sources, confidence scores, and verification status.

Parameters:

domain* (string) - Domain to search (e.g. stripe.com)
limit (integer) - Max emails to return (default 10)
offset (integer) - Skip N emails
type (string) - Filter: personal or generic
seniority (string) - Filter: junior, senior, or executive
department (string) - Filter by department (sales, marketing, etc)

bash

curl -s -X POST $GOOSEWORKS_API_BASE/v1/proxy/orthogonal/run \
  -H "Authorization: Bearer $GOOSEWORKS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"api":"hunter","path":"/v2/domain-search","query":{"domain":"stripe.com"}}'

Email Finder

Find the most likely email address for a person given their name and company domain.

Parameters:

domain (string) - Company domain (e.g. reddit.com)
company (string) - Company name (domain preferred)
first_name (string) - Person first name
last_name (string) - Person last name
full_name (string) - Full name (if first/last not available)
linkedin_handle (string) - LinkedIn profile handle

bash

curl -s -X POST $GOOSEWORKS_API_BASE/v1/proxy/orthogonal/run \
  -H "Authorization: Bearer $GOOSEWORKS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"api":"hunter","path":"/v2/email-finder","query":{"domain":"openai.com","first_name":"Sam","last_name":"Altman"}}'

Email Verifier

Verify if an email address is deliverable. Returns status (valid, invalid, accept_all, webmail, disposable, unknown).

Parameters:

email* (string) - Email address to verify

bash

curl -s -X POST $GOOSEWORKS_API_BASE/v1/proxy/orthogonal/run \
  -H "Authorization: Bearer $GOOSEWORKS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"api":"hunter","path":"/v2/email-verifier","query":{"email":"john@example.com"}}'

Use Cases

Sales Outreach: Find verified emails at target companies
Lead Generation: Build email lists by domain
Email Validation: Clean lists before campaigns
Company Research: Find companies matching criteria
Contact Enrichment: Get full profiles from emails

Discover More

For full endpoint details and parameters:

bash

curl -s -X POST $GOOSEWORKS_API_BASE/v1/proxy/orthogonal/search \
  -H "Authorization: Bearer $GOOSEWORKS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"prompt":"hunter API endpoints"}' List all endpoints
curl -s -X POST $GOOSEWORKS_API_BASE/v1/proxy/orthogonal/details \
  -H "Authorization: Bearer $GOOSEWORKS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"api":"hunter","path":"/v2/combined/find"}'   # Get endpoint details

Files

SKILL.md and 1 other file in skills/lead-generation/capabilities/email-finder-hunter of gooseworks-ai/goose-skills.

SKILL.md
skill.meta.json

Open the folder on GitHubat commit c650c6d

Used in 1 other repository

We found 1 copy of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in gooseworks-ai/goose-skills, which our catalogue first saw on October 7, 2026.

criptogus/agent-evolve-network.claude/skills/email-finder-hunter

Compare with similar skills

Email Finder Hunter next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Email Finder Hunter compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Email Finder Hunter this skillgooseworks-ai/goose-skills	1.2k	1 repos	~1.7k	Automated safety check: Pass	MIT	2 days ago
Stripe Projectsfossasia/eventyay	1.7k	5 repos	~2k	Automated safety check: Notes	Apache-2.0	today
WooCommerce Email Editor Developmentwoocommerce/woocommerce	11k	—	~893	Automated safety check: Pass	Custom licence	today
Email Best Practicesviclafouch/meme-studio	110	7 repos	~787	Automated safety check: Pass	None	6 mo ago
React Emailviclafouch/meme-studio	110	2 repos	~3.6k	Automated safety check: Pass	MIT	6 mo ago
Pinme Emailglitternetwork/pinme	3.8k	—	~1.2k	Automated safety check: Pass	MIT	29 days ago

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Questions about Email Finder Hunter

What does Email Finder Hunter do?

Email finder and verifier - find emails, verify deliverability, discover companies. Email Finder Hunter is an agent skill from gooseworks-ai/goose-skills.

When should I use Email Finder Hunter?

Email Finder Hunter fits situations like: tasks that involve Transactional email.

How do I install Email Finder Hunter in Claude Code?

Run `npx skills add gooseworks-ai/goose-skills --skill email-finder-hunter -a claude-code`. Or copy the skill folder (skills/lead-generation/capabilities/email-finder-hunter in gooseworks-ai/goose-skills) into .claude/skills/email-finder-hunter in your project. Claude Code loads it when a task matches its description.

How do I install Email Finder Hunter in Codex?

Run `npx skills add gooseworks-ai/goose-skills --skill email-finder-hunter -a codex`. Or copy the skill folder (skills/lead-generation/capabilities/email-finder-hunter in gooseworks-ai/goose-skills) into .agents/skills/email-finder-hunter in your project. Codex loads it when a task matches its description.

Can I use Email Finder Hunter in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add gooseworks-ai/goose-skills --skill email-finder-hunter -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/email-finder-hunter, .gemini/skills/email-finder-hunter, .github/skills/email-finder-hunter and .opencode/skills/email-finder-hunter in your project.

What does Email Finder Hunter need to run?

Going by SKILL.md and its folder, Email Finder Hunter needs the command-line tools its instructions call (curl, python3 and npx) and credentials named GOOSEWORKS_API_KEY. Our summary lists: Python 3; Node.js; A credential in GOOSEWORKS_API_KEY.

Does Email Finder Hunter access the network?

SKILL.md names 1 domain. In commands or code: api.gooseworks.ai; the agent is likely to contact it when it follows the instructions. This is read from the text; nothing was executed.

Is Email Finder Hunter safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Email Finder Hunter use?

Email Finder Hunter is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Email Finder Hunter use?

About 1.7k tokens (SKILL.md is roughly 7k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Email Finder Hunter?

Skills that share tags, products or a category with Email Finder Hunter: Stripe Projects (fossasia/eventyay, 1.7k stars), WooCommerce Email Editor Development (woocommerce/woocommerce, 11k stars), Email Best Practices (viclafouch/meme-studio, 110 stars) and React Email (viclafouch/meme-studio, 110 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Email Finder Hunter?

gooseworks-ai (a GitHub organization) maintains it in gooseworks-ai/goose-skills, which has 1,240 GitHub stars. The repository holds 273 skills in this directory. The repository was last updated on October 8, 2026.

Source: gooseworks-ai/goose-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Email Finder Hunter

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At a glance

What it does

When your agent uses it

Example prompts

Requirements

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Hunter - Email Intelligence

Setup

Capabilities

Usage

Combined Enrichment

Email Enrichment

Email Count

Discover Companies

Company Enrichment

Domain Search

Email Finder

Email Verifier

Use Cases

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Files

Used in 1 other repository

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