# Waterfall.io, contact us, Rates are quoted against your data, POST /v1/prospector: People search API

> Find contacts at a target company by role, with verified emails and optional phone enrichment.

Waterfall.io's people search API on its Rates are quoted against your data plan. It returns 3 of the 13 key fields we check: Experience, About, Location.
We rank 501 plans by price. [Coresignal's $49 monthly plan](https://datacircle.dev/people-search-apis/coresignal/49-monthly/llms.txt) is the cheapest paid plan per 1,000 people: as little as $0.0000038. Coresignal's $49 monthly plan covers up to 12,960,000 pages a month at no extra cost. Each page holds 1,000 people.
[PeopleSearch.im's $5 pack (/api/v1/search)](https://datacircle.dev/people-search-apis/peoplesearch-im/5-pack-starter-post-api-v1-search/llms.txt) covers any number of people. PeopleSearch.im's $5 pack costs less to start than Coresignal's $49 monthly plan.
[GetProspect](https://datacircle.dev/people-search-apis/getprospect/49-monthly-starter-post-v2-people-search-people-search/llms.txt), [QuickEnrich](https://datacircle.dev/people-search-apis/quickenrich/29-monthly-starter-post-api-employees-contact-finder/llms.txt) and [AnyAPI](https://datacircle.dev/people-search-apis/anyapi/top-up-from-10-manual-top-up-post-v1-run-people-search-quickenrich/llms.txt) are the best people search API providers in our benchmark.

- This page: https://datacircle.dev/people-search-apis/waterfall-io/contact-us-rates-are-quoted-against-your-data-post-v1-prospector
- [Best people search API in 2026: pricing compared](https://datacircle.dev/best-people-search-api.txt)
- Get it: https://www.waterfall.io/pricing
- Request: `POST https://api.waterfall.io/v1/prospector`
- API key: with the plan, on https://www.waterfall.io/pricing
- Its API docs: https://docs.waterfall.io/v1/prospector-launcher
- Sold by: Waterfall.io (https://www.waterfall.io)
- Checked: 2026-10-26

## In the answer

- Completeness: 23%
- Experience: ✓
- About: ✓
- Location: ✓

## Price

- Per: result
- Billing: contact

## Aggregators

- Aggregators: none

## Charges

- Most per search: 500
- Also pays for: from the same budget: Contact Enrichment · Phone Enrichment · Search Contact · Search Company · Company Enrichment · Company Reveal · Company Titles · Job Change · Email Verifier

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Find contacts at a target company by role, with verified emails and optional phone enrichment.

## Data

- Keep data: set by your agreement with Waterfall, not public
- Use data: for internal sales and marketing use or, with our permission, for integration into their products

## Rate limit

- Per second: 0.83
- Batch: 1

## Speed

- Answer: by polling or webhook

## The call

- You send: domain, one of title_filter or title_filters. Optional: company_name, linkedin, location_name, location_country, location_countries, excluded_names, limit, include_phones, verified_only, webhook_url, custom_fields
- Method: POST
- Path: /v1/prospector

## About the plan

- Plan: Rates are quoted against your data
- Who can get it: business users 18 or over, who sign after a call

## The 66 fields the plan's answer can hold

job status, start date, stop date, input, job ID, context ID, custom fields, company ID, company LinkedIn ID, company name, company domain, company website, company LinkedIn URL, company LinkedIn description, company LinkedIn logo URL, company size, company LinkedIn size, company LinkedIn industry, company LinkedIn type, company LinkedIn followers, company LinkedIn founded year, company LinkedIn employee count, company LinkedIn address, company country, company generic emails, person ID, first name, last name, LinkedIn ID, LinkedIn URL, about, location, country, job title, seniority, department, job history title, job history location, job history company name, job history company LinkedIn ID, job history company LinkedIn URL, job history company domain, job history start year, job history start month, job history start date, job history end year, job history end month, job history end date, job history current, job history description, professional email, personal email, email verified, email confidence, email verified status, domain age days, SMTP provider, MX record, usage total USD, usage balance remaining USD, usage persons count, usage persons USD, usage phones count, usage phones USD, usage companies count, usage companies USD

## Waterfall.io's plans (1)

- [Waterfall.io, contact us, Rates are quoted against your data, POST /v1/prospector](https://datacircle.dev/people-search-apis/waterfall-io/contact-us-rates-are-quoted-against-your-data-post-v1-prospector/llms.txt): 23% complete

## Waterfall.io's calls for this API (2)

- `POST /v1/prospector`: [Waterfall.io, contact us, Rates are quoted against your data, POST /v1/prospector](https://datacircle.dev/people-search-apis/waterfall-io/contact-us-rates-are-quoted-against-your-data-post-v1-prospector/llms.txt)
- `POST /v1/search/contact`: [Waterfall.io, contact us, Rates are quoted against your data, POST /v1/search/contact](https://datacircle.dev/people-search-apis/waterfall-io/contact-us/llms.txt)

## Waterfall.io's APIs (8)

- [Waterfall.io: LinkedIn profile API pricing, 1 plan](https://datacircle.dev/linkedin-profile-apis/waterfall-io/contact-us/llms.txt)
- [Waterfall.io: company discovery API pricing, 1 plan](https://datacircle.dev/company-discovery-apis/waterfall-io/contact-us/llms.txt)
- [Waterfall.io: company enrichment API pricing, 1 plan](https://datacircle.dev/company-enrichment-apis/waterfall-io/contact-us/llms.txt)
- [Waterfall.io: email verification API pricing, 1 plan](https://datacircle.dev/validate-email-apis/waterfall-io/contact-us/llms.txt)
- [Waterfall.io: email finder API pricing, 1 plan](https://datacircle.dev/find-email-apis/waterfall-io/contact-us/llms.txt)
- [Waterfall.io: phone finder API pricing, 1 plan](https://datacircle.dev/find-phone-apis/waterfall-io/contact-us/llms.txt)
- [Waterfall.io: people enrichment API pricing, 1 plan](https://datacircle.dev/person-enrichment-apis/waterfall-io/contact-us/llms.txt)
- [Waterfall.io: people search API pricing, 1 plan, POST /v1/prospector](https://datacircle.dev/people-search-apis/waterfall-io/contact-us-rates-are-quoted-against-your-data-post-v1-prospector/llms.txt)

## Waterfall.io: people search API alternatives

- [Sumble, contact us, Enterprise, POST /v9/people, People](https://datacircle.dev/people-search-apis/sumble/contact-us-enterprise-post-v9-people-people/llms.txt): 23% complete, 1 day
- [Dealroom, contact us](https://datacircle.dev/people-search-apis/dealroom/contact-us/llms.txt): 31% complete
- [Xverum, contact us](https://datacircle.dev/people-search-apis/xverum/contact-us/llms.txt): 23% complete, stored
- [AI Ark, contact us, Agency & Enterprise Plan, POST /v1/people/preview](https://datacircle.dev/people-search-apis/ai-ark/contact-us-agency-enterprise-plan-post-v1-people-preview/llms.txt): 23% complete, 30 days
- [BetterContact, contact us](https://datacircle.dev/people-search-apis/bettercontact/contact-us/llms.txt): 23% complete
- [Surfe, contact us](https://datacircle.dev/people-search-apis/surfe/contact-us/llms.txt): 15% complete

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-10-26.

- https://docs.waterfall.io/v1/faq.md
- https://docs.waterfall.io/v1/inline-usage
- https://docs.waterfall.io/v1/introduction
- https://docs.waterfall.io/v1/prospector-finder.md
- https://docs.waterfall.io/v1/prospector-launcher
- https://docs.waterfall.io/v1/rate-limit
- https://waterfall-io-public.s3.us-east-1.amazonaws.com/api_specs.yaml
- https://www.waterfall.io/
- https://www.waterfall.io/book-a-call
- https://www.waterfall.io/pricing
- https://www.waterfall.io/privacy-policy
- https://www.waterfall.io/product/contact-enrich
- https://www.waterfall.io/terms-of-service