# Knock2, free: People search API

> POST /v1/prospect sources new contacts (e.g. a decision maker) at an account using the buying-committee engine.

Knock2's people search API on its 7-day free trial plan. It costs $0.00 per 1,000 people. It returns 1 of the 13 key fields we check: Experience.
The cheapest of the 227 priced plans is [StartupHub.ai, $500 yearly](https://datacircle.dev/people-search-apis/startuphub-ai/500-yearly/llms.txt), at $0.0083 per 1,000.

- This page: https://datacircle.dev/people-search-apis/knock2/free
- Get it: https://knock2.ai/pricing
- Its API docs: https://docs.knock2.ai/api-reference/prospect/prospect-contacts
- Sold by: Knock2 (https://knock2.ai)
- Checked: 2026-10-22

## In the answer

- Completeness: 8%
- Experience: ✓

## Price

- $ per 1,000: $0.00
- Billing: free

## Aggregators

- Aggregators: none

## Charges

- Per: result
- Also pays for: from the same budget: Contact identified · Auto-prospected contact · Account identified · Other enrichments · Email validation · Buyer signal monitoring · POST /v1/enrich

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: POST /v1/prospect sources new contacts (e.g. a decision maker) at an account using the buying-committee engine.

## Data

- Keep data: no limit
- Use data: only in line with Knock2's published policies and applicable law, not for service bureau purposes or for the benefit of a third party, you obtain end users' consents and answer for your own privacy compliance

## Plan

- Pay: $0

## Rate limit

- Per second: 1
- Batch: 1

## Speed

- Answer: in the call or by polling

## The call

- You send: account_id. Optional: roles, max_contacts, X-Knock-Tenant
- Method: POST
- Path: /v1/prospect

## About the plan

- Plan: 7-day free trial
- Who can get it: once per customer, with a payment method on file (Stripe checkout), it converts to the paid plan chosen at sign-up unless cancelled within the 7 days

## The 12 fields the plan's answer can hold

account ID, account created, contacts found, contacts already existed, credits charged, person ID, first name, last name, email, job title, LinkedIn URL, role searched

## Knock2's plans (13)

- [Knock2, free](https://datacircle.dev/people-search-apis/knock2/free/llms.txt): $0.00 per 1,000, 8% complete
- [Knock2, $199 monthly](https://datacircle.dev/people-search-apis/knock2/199-monthly/llms.txt): $110.556 per 1,000, 8% complete
- [Knock2, $349 monthly](https://datacircle.dev/people-search-apis/knock2/349-monthly/llms.txt): $77.556 per 1,000, 8% complete
- [Knock2, $499 monthly](https://datacircle.dev/people-search-apis/knock2/499-monthly/llms.txt): $66.533 per 1,000, 8% complete
- [Knock2, $749 monthly](https://datacircle.dev/people-search-apis/knock2/749-monthly/llms.txt): $49.933 per 1,000, 8% complete
- [Knock2, $999 monthly](https://datacircle.dev/people-search-apis/knock2/999-monthly/llms.txt): $44.40 per 1,000, 8% complete
- [Knock2, $1,999 monthly](https://datacircle.dev/people-search-apis/knock2/1999-monthly/llms.txt): $44.422 per 1,000, 8% complete
- [Knock2, $1,980 yearly](https://datacircle.dev/people-search-apis/knock2/1980-yearly/llms.txt): $91.667 per 1,000, 8% complete
- [Knock2, $3,480 yearly](https://datacircle.dev/people-search-apis/knock2/3480-yearly/llms.txt): $64.444 per 1,000, 8% complete
- [Knock2, $4,980 yearly](https://datacircle.dev/people-search-apis/knock2/4980-yearly/llms.txt): $55.333 per 1,000, 8% complete
- [Knock2, $7,440 yearly](https://datacircle.dev/people-search-apis/knock2/7440-yearly/llms.txt): $41.333 per 1,000, 8% complete
- [Knock2, $9,960 yearly](https://datacircle.dev/people-search-apis/knock2/9960-yearly/llms.txt): $36.889 per 1,000, 8% complete
- [Knock2, contact us](https://datacircle.dev/people-search-apis/knock2/contact-us/llms.txt): 8% complete

## Knock2's calls (1)

- `POST /v1/prospect`: [Knock2, free](https://datacircle.dev/people-search-apis/knock2/free/llms.txt)

## Knock2's APIs (2)

- [Knock2: people search API pricing, 13 plans](https://datacircle.dev/people-search-apis/knock2/free/llms.txt)
- [Knock2: cached LinkedIn profile API pricing, 13 plans](https://datacircle.dev/cached-linkedin-profile-apis/knock2/free/llms.txt)

## Knock2: people search API alternatives

- [Voila Norbert, free](https://datacircle.dev/people-search-apis/voila-norbert/free/llms.txt): $0.00 per 1,000, 8% complete, live
- [Leadscart, free](https://datacircle.dev/people-search-apis/leadscart/free/llms.txt): $0.00 per 1,000, 15% complete, live
- [LoneScale, free, Free, POST /trigger/contact-sourcing](https://datacircle.dev/people-search-apis/lonescale/free-free-post-trigger-contact-sourcing/llms.txt): $0.00 per 1,000, 15% complete
- [NinjaPear, free](https://datacircle.dev/people-search-apis/ninjapear/free/llms.txt): $0.00 per 1,000, 8% complete, live

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-10-22.

- https://docs.knock2.ai/api-reference/enrich/enrich-contact
- https://docs.knock2.ai/api-reference/enrich/enrich-contact.md
- https://docs.knock2.ai/api-reference/overview
- https://docs.knock2.ai/api-reference/prospect/prospect-contacts.md
- https://docs.knock2.ai/authentication
- https://docs.knock2.ai/guides/prospecting
- https://knock2.ai/pricing
- https://www.knock2.ai/terms-and-conditions