Agent skill

contact-enrichment

Enrich contacts with LinkedIn URLs, verified work/personal emails, and phone numbers through the ColdIQ marketplace, layering providers cheapest-first.

activeSelf-containedActs undeclared587 words

Filed under Prospecting and list building.

From Cold-IQ/coldiq-marketplace-skills · 17 skill entries · 1 · pushed 2026-09-22

What it does when it runs

Enrich contacts with LinkedIn URLs, verified work/personal emails, and phone numbers through the ColdIQ marketplace, layering providers cheapest-first. Use when finding emails for a list, building an email waterfall, verifying deliverability, finding phone numbers, resolving company LinkedIn URLs from domains, or enriching contacts before a campaign. Triggers on "enrich contacts", "find emails", "email waterfall", "verify emails", "bounce check", "find phone numbers", "company LinkedIn URL", "enrich before campaign", "deliverability". Do NOT use for prospecting/search to BUILD a list (see coldiq-search-enrich / apollo-search) or list dedup (see list-dedup).

Automated analysis of the skill and the 2 files bundled beside it. A skill’s own description is written to be selected by an agent, so it describes the job and not the dependencies.

Keys and connectors you must supply: None found.
Hosts it reaches: No third-party host appears in the skill or its bundled files.
Tool permissions it declares: No allowed-tools in the frontmatter. It does act, so it runs under whatever permissions your session already grants.
Actions present in the files: network

Ask about contact-enrichment

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Install it

View source on GitHub ↗

git clone --depth 1 --filter=blob:none --sparse https://github.com/Cold-IQ/coldiq-marketplace-skills.git /tmp/coldiq-marketplace-skills
git -C /tmp/coldiq-marketplace-skills sparse-checkout set "skills/contact-enrichment"
mkdir -p ~/.claude/skills/contact-enrichment
cp -R "/tmp/coldiq-marketplace-skills/skills/contact-enrichment/." ~/.claude/skills/contact-enrichment/

Picked up without a restart. A project skill of the same name is shadowed by your personal one. For one repository only, swap ~/.claude/skills for .claude/skills. Claude Code docs ↗

Or take the whole library

This repo ships a .claude-plugin manifest, so Claude Code can install all 17 skills at once. Plugin skills are invoked as /<plugin>:<skill>, so they never collide with your own.

/plugin marketplace add Cold-IQ/coldiq-marketplace-skills
/plugin

The folder is the same in every client that implements the format — 46 of them — so if yours is not above, only the destination changes.

The skill

Source on GitHub ↗

Reproduced in full from Cold-IQ/coldiq-marketplace-skills/blob/495c1b4256db8c6683ac1ff59a093899228eca73/skills/contact-enrichment/SKILL.md, which is licensed MIT (repository). 587 words, 8 headings.

Contact Enrichment

Find LinkedIn URLs, work/personal emails, and phones for a list of contacts — layering ColdIQ endpoints cheapest-first and skipping anyone already enriched. The classic multi-provider email waterfall (Prospeo → Findymail → FullEnrich, then verify) runs entirely through ColdIQ marketplace endpoints, so you get one key and unified credits instead of juggling provider accounts.

ColdIQ Marketplace Endpoints

Task	Method	Path	Credits	Endpoint ID	Notes
Company LinkedIn URL from domain	POST	`/v1/limadata/find/company-linkedin`	1	`limadata.find.company_linkedin`	Replaces Linkup `/enrich/linkedin`
Work email (name + domain)	POST	`/v1/limadata/find/work-email`	1	`limadata.find.work_email`	Free if not found
Work email (LinkedIn URL)	POST	`/v1/limadata/find/work-email-linkedin`	3	`limadata.find.work_email_linkedin`	Fallback
Personal email	POST	`/v1/limadata/find/personal-email`	5	`limadata.find.personal_email`	Last resort
Phone number	POST	`/v1/limadata/find/phone`	10	`limadata.find.phone`	Free if not found
Verify email (bounce check)	POST	`/v1/findymail/verify`	1	`findymail.verify`	Replaces Debounce
Email via Prospeo (waterfall step)	POST	`/v1/prospeo/enrich-person`	unknown	`prospeo.enrich_person`	First in waterfall
Email via Findymail (LinkedIn)	POST	`/v1/findymail/search/business-profile`	1	`findymail.search.business_profile`	Waterfall step
Email via FullEnrich (bulk)	POST	`/v1/fullenrich/contact/enrich/bulk`	per result	`fullenrich.contact.enrich_bulk`	Nuclear option, async
Enrich person (profile)	POST	`/v1/limadata/enrich/person`	1–5	`limadata.enrich.person`	Full profile

Layer 1 — Company LinkedIn URLs

Given company domains, resolve their LinkedIn company pages first (downstream steps need them). → POST /v1/limadata/find/company-linkedin · 1 cr · limadata.find.company_linkedin

Layer 2 — Email Waterfall (cheapest-first, stop on hit)

Try name + company domain. → POST /v1/limadata/find/work-email · 1 cr · limadata.find.work_email
If empty / domain missing, fall back to the LinkedIn URL. → POST /v1/limadata/find/work-email-linkedin · 3 cr · limadata.find.work_email_linkedin
Second-opinion provider on the same LinkedIn URL. → POST /v1/findymail/search/business-profile · 1 cr · findymail.search.business_profile
Provider-level enrichment as a fallback. → POST /v1/prospeo/enrich-person · ? cr · prospeo.enrich_person (unverified)
Nuclear option for whatever's still missing (bulk, async — see resources/async-job-pattern.md). → POST /v1/fullenrich/contact/enrich/bulk · per result · fullenrich.contact.enrich_bulk
Personal email only if a work email is truly unreachable. → POST /v1/limadata/find/personal-email · 5 cr · limadata.find.personal_email

Typical cumulative hit rate: 85–95% depending on contact quality.

Layer 3 — Verify before sending

Unverified emails destroy sender reputation. Verify every found address. → POST /v1/findymail/verify · 1 cr · findymail.verify

Status	Action
Valid / Deliverable	Safe to send
Risky / Accept-all	Send with caution (catch-all domain)
Invalid / Undeliverable	Do NOT send
Unknown	Retry with another provider

Phone numbers

→ POST /v1/limadata/find/phone · 10 cr · limadata.find.phone (free if not found; LinkedIn URL or name+company)

Cost optimization

See resources/credit-optimization.md. Key rules: dedup first (list-dedup), cheapest input first, stop on first hit, test on 50–100 rows before the full list, export only valid/risky emails to the campaign.

Checklist

Dedup contacts before any enrichment
Resolve company LinkedIn URLs (Layer 1)
Run the email waterfall cheapest-first, stop on hit (Layer 2)
Verify all found emails (Layer 3)
Test on 50–100 rows first; if hit rate <50%, check data quality
Export only verified/risky emails to the campaign (never invalid)

Files bundled with it

These load only when the skill asks for them, so they cost nothing until it runs.

Other skills for the same job

Different authors, same problem. Matched on the words in the skill name, across every library in the catalogue except this one.

fivos-contact-enrichment by fivosaresti · 1
lead-enrichment by janskuba · 203
data-enrichment-integration by louisblythe · 170
account-contact-shortlist by explorium-ai · 156
enrich-contact by explorium-ai · 156
workflows-audience-enrichment by clay-run · 129
enrichment-design by extruct-ai · 109
list-enrichment by extruct-ai · 109

Need help setting it up?

This page tells you what contact-enrichment does and what it needs. Cheetah builds the agent setup it runs inside: data, CRM, sequencing and the guardrails.

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