API review

FullEnrich API review

Waterfall contact enrichment across 20+ (pricing page: 25+) providers with triple email verification and phone line/ownership checks; async API with webhooks, plus people/company search and an official hosted MCP. Best for maximising find rate for mobiles and work emails without wiring your own provider waterfall.

Verified 25 Oct 2026 · 10 endpoints listed · Official MCP server

See pricing

FullEnrich API docs

What a call costs

The actions you pay for, as FullEnrich prices them in credits.

Action	Cost	Per
Work email found (Deliverable / High Probability / Catch-all)	1 credit	per email
Mobile phone found	10 credits	per mobile (landline free)
Personal email found	3 credits	per email
Reverse email lookup	1 credit	per person found
Search / standalone person or company profile	0.25 credit	per record returned (free when bundled with enrichment, free on re-export)
Not found	0 credits	per lookup
Credit price	$0.058 (500/mo) down to $0.035 (100K/mo); annual $0.052 down to $0.032	per credit

Pricing, plan by plan

US dollars, as FullEnrich's pricing page shows them on 25 Oct 2026. Monthly and annual billing are shown apart.

Free tier Free trial: $0, 50 credits, no credit card, full Pro feature set incl. API and MCP; more credits for inviting teammates. Live: the 50 credits AND the API key page are locked until you pass a mandatory phone (SMS) verification at onboarding.

Free trial

Free

50 credits one-off

API included

Pro 500

$29/mo

billed monthly

$26/mo

billed annually

500/month or 6,000/year

API included

Plan details

Renew early or move up a tier

Pro 1K

$55/mo

billed monthly

$49/mo

billed annually

1,000/month or 12,000/year

API included

Plan details

Renew early or move up a tier

Pro 5K

$255/mo

billed monthly

$232/mo

billed annually

5,000/month or 60,000/year

API included

Plan details

Renew early or move up a tier

Pro 10K

$499/mo

billed monthly

$454/mo

billed annually

10,000/month or 120,000/year

API included

Plan details

Renew early or move up a tier

Pro 100K

$3,500/mo

billed monthly

$3,150/mo

billed annually

100,000/month or 1,200,000/year

API included

Plan details

Above this: contact sales

Show all 7 plansShow fewer plans

Enterprise

Custom quote

Custom

API included

Plan details

Custom; BYOK available

Rate limits

60 API calls per minute, fixed calendar-minute window, across all endpoints (Enrich, Reverse Email, Search).

Limit	Free trial / Pro	Enterprise
Limit	60 calls/min, queue 100	Custom rate limits & priority queue

How to get an API key

FullEnrich uses API key. The steps below follow FullEnrich's own docs.

Create a FullEnrich account. The Free trial plan includes API access.
app.fullenrich.com/app/api after free trial signup (no card) AND phone/SMS verification, which is mandatory before the API page opens; keys can carry a consumption limit (per-user credit limits are a Pro feature).

Make a first call: Start waterfall enrichment for 1-100 contacts (work email, mobile, personal email). Keep the key in an environment variable, never in the command.

curl -X POST "https://app.fullenrich.com/api/v2/contact/enrich/bulk" \
  -H "Authorization: Bearer $FULLENRICH_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{}'

Where the docs live

What	Where
Documentation	docs.fullenrich.com/api/v2/general/introduction
API reference	docs.fullenrich.com/llms.txt
OpenAPI spec	docs.fullenrich.com/api/v2/reference/openapi.yaml
llms.txt	docs.fullenrich.com/llms.txt
Changelog	fullenrich.com/changelog
Base URL	`https://app.fullenrich.com/api/v2`
MCP server	`https://mcp.fullenrich.com/mcp`

Strengths and limits

Where it fits

Maximising find rate for mobiles and work emails without wiring your own provider waterfall
Mobile numbers with line type, active status, US/Canada owner-name match and connect-rate buckets
Embedding enrichment in a product: async batches of 100, per-contact webhooks, signed payloads, custom passthrough fields
Reverse email lookup (work or personal email to full person + company profile) at 1 credit
Unlimited-seat teams: no per-user pricing

Where it falls short

Real-time synchronous lookups: enrichment takes typically 30-90 seconds per contact
Cheap bulk list building: search costs 0.25 credit per record returned (Prospeo is 1 credit per 25)
Stacking inside another waterfall
High-throughput polling: 60 calls/minute shared across all endpoints

Worth knowing

Catch-all emails are charged 1 credit like Deliverable ones (credits doc); filter on status if you only want DELIVERABLE (2% bounce) vs HIGH_PROBABILITY (9% bounce)
No dedup within the same bulk, and simultaneous requests for the same contact are not deduplicated; dedup is on exact input, so a variant name/domain/LinkedIn URL is charged again
Results are kept 3 months only (GDPR); fetching an enrichment_id after that errors, and re-enriching after 3 months costs credits again
custom field values must be strings; a number returns an error
If no most_probable_* field comes back, nothing passed verification and no credit was used, even when work_emails[] or phones[] are non-empty

7 moreShow fewer

Search offset is capped at 10,000; use search_after beyond that, and its ordering can shift after the monthly database update
Lookup endpoints are billed at search pricing, not free
Test for free with the hard-coded FullEnrich team contacts (exact data on the credits page)
The pricing comparison table says search has '15+ filters' while the Pro plan card says '30+'; the OpenAPI people search lists 30 filter fields
Docs say 20+ providers, pricing says 25+; which providers are chained is not published
Free trial is not frictionless: signup needs no card, but onboarding forces phone (SMS) verification before the 50 credits or the API key unlock.
Plan-differences table: per-user credit limits, credit monitoring and low-credit alerts are NOT on the Free trial, despite 'full Pro feature set'. Source: fullenrich.com/pricing.md (verified 2026-10-25)

Our take

We left FullEnrich out of an enrichment waterfall we built for a B2B data company: it is itself a multi-provider waterfall that overlapped the providers we already called, and the orchestration platform we used could run it only on the platform's own credits.

Who should use it

Use FullEnrich for: Maximising find rate for mobiles and work emails without wiring your own provider waterfall
Look elsewhere for: Real-time synchronous lookups: enrichment takes typically 30-90 seconds per contact

If FullEnrich is not the answer

Other Enrichment tools in this directory, each with its own review.

BetterContact

Enrichment

From $15/mo

Best for one-bill access to 20+ email/phone providers without holding their keys.

BetterContact API review

BuiltWith

Enrichment

From $245.83/moOfficial MCP

Best for front-end / web technographics per domain with first/last detected dates.

BuiltWith API review

Clearbit

Enrichment

Best for existing Clearbit API customers maintaining legacy integrations.

Clearbit API review

Before you build

Four things to settle first, each read off FullEnrich's own pages.

Confirm the API is on your planThe Free trial plan includes API access. Free tier: Free trial: $0, 50 credits, no credit card, full Pro feature set incl.
Keep the key out of your codeAPI key.
Design around the rate limit60 API calls per minute, fixed calendar-minute window, across all endpoints (Enrich, Reverse Email, Search).
Know the catch before you scaleCatch-all emails are charged 1 credit like Deliverable ones (credits doc); filter on status if you only want DELIVERABLE (2% bounce) vs HIGH_PROBABILITY (9% bounce)

Want us to build it for you?

Tell us what you want FullEnrich to do in your stack. We will show you how we would wire it into your data, outbound or CRM, and what we would check first.

Book a call

See case studies

Read from fullenrich.com/pricing.md, docs.fullenrich.com/llms.txt and docs.fullenrich.com/api/v2/general/ratelimit. Verified 25 Oct 2026.

All 10 endpointsFor developers: method, path, what it does and what it costs.

Base URL: app.fullenrich.com/api/v2

Bulk and async: Async batches of up to 100 contacts or emails per call; silentFail=true skips invalid rows instead of failing the batch

Webhooks: Yes: webhook_url fires once per finished/out-of-credits/cancelled batch; webhook_events.contact_finished fires per contact. Signed with X-Signature-SHA1 (HMAC-SHA1 of body, key = your API key). Retried every minute up to 5 times on non-2xx.

Filter endpoints

10 endpoints

Method	Path	What it does	Cost
POSTasync	`/contact/enrich/bulk`	Start waterfall enrichment for 1-100 contacts (work email, mobile, personal email)	1 credit per work email found (Deliverable, High Probability or Catch-all), 10 per mobile found, 3 per valid personal email; 0 if nothing passes verification; landline 0
GETasync	`/contact/enrich/bulk/{enrichment_id}`	Poll enrichment result (not recommended; use webhook)	free (counts against rate limit)
POSTasync	`/contact/reverse/email/bulk`	Reverse email lookup: person + company behind a work or personal email, batches up to 100	1 credit if the person is found
GETasync	`/contact/reverse/email/bulk/{enrichment_id}`	Poll reverse lookup result	free
POST	`/people/search`	Search 800M people by 30 filters (current/past company, title, seniority, function, location, skills, languages, universities, tenure, days since job change)	0.25 credit per person returned; free on re-export of a record already exported
POST	`/company/search`	Search 50M companies by name, domain, LinkedIn id/url, keywords, specialties, technologies, industries, types, HQ, founded year, headcount	0.25 credit per company returned; re-export free
POST	`/people/lookup`	Look up one person by LinkedIn URL/ID or full name + company identifier	Search API pricing (0.25 credit per record returned)
POST	`/company/lookup`	Look up one company by domain or LinkedIn URL/ID	Search API pricing (0.25 credit per record returned)
GET	`/account/credits`	Spendable credit balance for this key (capped by key consumption limit)	free
GET	`/account/keys/verify`	Check the API key is valid	free