# KnowFirst, free: People enrichment API

> The same profile looked up by email address or LinkedIn URL.

KnowFirst's people enrichment API on its Free plan. It costs $0.00 per 1,000 people. KnowFirst's docs list 3 of the 13 key fields we check: Experience, Location, Photo.
We haven't run KnowFirst through [our people enrichment API benchmark](https://datacircle.dev/best-people-enrichment-api.txt) yet.
This plan is free. We rank 264 plans for people enrichment APIs by price. Half the plans cost $21.225 per 1,000 people or less.
[Coldlytics's $49 monthly plan](https://datacircle.dev/person-enrichment-apis/coldlytics/49-monthly/llms.txt) is the cheapest paid plan per 1,000 people. Coldlytics's $49 monthly plan charges nothing per call. You get as many people as Coldlytics's rate limit allows.
[GetProspect's $49 monthly plan (/v2/people/{id})](https://datacircle.dev/person-enrichment-apis/getprospect/49-monthly-starter-get-v2-people-id/llms.txt) covers any number of people. GetProspect's $49 monthly plan costs as much up front as Coldlytics's $49 monthly plan.
[GetProspect](https://datacircle.dev/person-enrichment-apis/getprospect/399-monthly-growth-50k-post-v2-people-enrich/llms.txt), [Reverse Contact](https://datacircle.dev/person-enrichment-apis/reverse-contact/500-pack/llms.txt) and [Context.dev](https://datacircle.dev/person-enrichment-apis/context-dev/500-monthly/llms.txt) are the best people enrichment API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/person-enrichment-apis/knowfirst/free
- [People enrichment API: the 10 best providers compared](https://datacircle.dev/best-people-enrichment-api.txt)
- Get it: https://knowfirst.ai/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=people-enrichment-api-pricing
- Request: `GET https://api.knowfirst.ai/v1/person/view`
- API key: with the plan, on https://knowfirst.ai/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=people-enrichment-api-pricing
- Its API docs: https://app.knowfirst.ai/docs/api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=people-enrichment-api-pricing
- Sold by: KnowFirst (https://knowfirst.ai?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=people-enrichment-api-pricing)
- Checked: 2026-11-06

## In the answer

- Completeness: 23%
- Experience: ✓ current job
- Location: ✓
- Photo: ✓

## Price

- $ per 1,000 people: $0.00
- Per: call
- Billing: free

## Aggregators

- Aggregators: none

## Charges

- Also pays for: from the same budget: GET /business/list · GET /business/list/{views} · GET /business/enrich · GET /business/view/{views} · GET /business/view/overview · GET /business/view/locations · GET /business/view/socials · GET /business/view/ads · GET /business/view/organic · GET /business/view/directories · GET /business/view/domains · GET /business/view/tech_stack · GET /business/view/jobs · GET /business/view/people · GET /business/view/salaries · GET /business/view/news · GET /business/view/contracts · GET /business/view/trademarks · GET /business/view/awards · GET /business/view/customer_reviews · GET /business/view/employee_reviews · GET /business/view/feed · GET /business/view/related · GET /domain/list/{views} · GET /person/list · GET /person/view/{id} · GET /location/list · GET /business/suggestions · POST /business/list/export · GET /person/list/export

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: The same profile looked up by email address or LinkedIn URL.

## Data

- Countries: Australia, New Zealand
- Keep data: you must not [...] store [...] any part of the Website and API [...] without prior written consent from us
- Use data: you must not in any form or by any means copy, adapt, reproduce (other than for the purpose of viewing the Website and API in your browser), store, modify, distribute, print, upload, display, publish or create derivative works from any part of the Website and API or commercialise any information obtained from any part of the Website and API without prior written consent from us [...] You acknowledge and agree that you will: [...] h) not alter, modify, decompile, disassemble, reverse engineer, sublicense or change any software that underpins the Website and API, i) not purport to grant to a third party any right to access or use our Website and API except as permitted by us [...] You acknowledge that you must: a) not resupply the Website and API to third parties, or permit third parties to access the Website and API [...] You agree that you will only use and disclose any personal information that you access through the Website and API in a manner that would be permitted under the Privacy Act 1988 (Cth) by an APP entity

## Plan

- Pay: A$0
- You get: 20 credits
- Enough for: 20 calls

## Rate limit

- Per day: 50,000
- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: email. Optional: url
- Method: GET
- Path: /person/view

## About the plan

- Plan: Free
- Who can get it: anyone

## The 30 fields the plan's answer can hold

person ID, name, role, seniority, OSCA code, OSCA name, OSCA ancestors, role start date, role end date, role location, phone, employer name, employer ID, employer website URL, salary, salary minimum, salary maximum, salary currency, location, Facebook handle, Facebook URL, Twitter handle, Twitter URL, Instagram handle, Instagram URL, LinkedIn handle, LinkedIn URL, image, email, role history

## KnowFirst's plans (8)

- [KnowFirst, free](https://datacircle.dev/person-enrichment-apis/knowfirst/free/llms.txt): $0.00 per 1,000, 23% complete
- [KnowFirst, A$120 monthly](https://datacircle.dev/person-enrichment-apis/knowfirst/a-120-monthly/llms.txt): $417.528 per 1,000, 23% complete
- [KnowFirst, A$216 monthly](https://datacircle.dev/person-enrichment-apis/knowfirst/a-216-monthly/llms.txt): $250.517 per 1,000, 23% complete
- [KnowFirst, A$600 monthly](https://datacircle.dev/person-enrichment-apis/knowfirst/a-600-monthly/llms.txt): $208.764 per 1,000, 23% complete
- [KnowFirst, A$720 yearly](https://datacircle.dev/person-enrichment-apis/knowfirst/a-720-yearly/llms.txt): $208.764 per 1,000, 23% complete
- [KnowFirst, A$1,296 yearly](https://datacircle.dev/person-enrichment-apis/knowfirst/a-1296-yearly/llms.txt): $125.258 per 1,000, 23% complete
- [KnowFirst, A$3,600 yearly](https://datacircle.dev/person-enrichment-apis/knowfirst/a-3600-yearly/llms.txt): $104.382 per 1,000, 23% complete
- [KnowFirst, contact us](https://datacircle.dev/person-enrichment-apis/knowfirst/contact-us/llms.txt): 23% complete

## KnowFirst's calls for this API (1)

- `GET /person/view`: [KnowFirst, free](https://datacircle.dev/person-enrichment-apis/knowfirst/free/llms.txt)

## KnowFirst's APIs (6)

- [KnowFirst: company discovery API pricing, 8 plans](https://datacircle.dev/company-discovery-apis/knowfirst/free/llms.txt)
- [KnowFirst: company open jobs API pricing, 8 plans](https://datacircle.dev/company-open-job-apis/knowfirst/free/llms.txt)
- [KnowFirst: tech stack API pricing, 8 plans](https://datacircle.dev/company-technology-apis/knowfirst/free/llms.txt)
- [KnowFirst: people search API pricing, 8 plans](https://datacircle.dev/people-search-apis/knowfirst/free/llms.txt)
- [KnowFirst: people enrichment API pricing, 8 plans](https://datacircle.dev/person-enrichment-apis/knowfirst/free/llms.txt)
- [KnowFirst: company enrichment API pricing, 8 plans, GET /business/view/overview](https://datacircle.dev/company-enrichment-apis/knowfirst/free-get-business-view-overview/llms.txt)
- [KnowFirst: company enrichment API pricing, 8 plans, GET /business/enrich](https://datacircle.dev/company-enrichment-apis/knowfirst/free-get-business-enrich/llms.txt)

## KnowFirst: people enrichment API alternatives

- [Lessie AI, $99 monthly](https://datacircle.dev/person-enrichment-apis/lessie-ai/99-monthly/llms.txt): $99.00 per 1,000, 15% complete
- [NeuralVerge, $1,000 monthly, Enterprise, POST /functions/v1/run-phone-enrichment-us](https://datacircle.dev/person-enrichment-apis/neuralverge/1000-monthly-enterprise-post-functions-v1-run-phone-enrichment-us/llms.txt): $100.00 per 1,000, 8% complete, live
- [OneShot, top-up (x402, USDC on Base), POST /v1/tools/lookup/person-dossier](https://datacircle.dev/person-enrichment-apis/oneshot/top-up-x402-usdc-on-base/llms.txt): $100.00 per 1,000, 23% complete, stored
- [Skip Sherpa, $249 pack](https://datacircle.dev/person-enrichment-apis/skip-sherpa/249-pack/llms.txt): $103.75 per 1,000, 8% 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 2026-11-06.

- https://app.knowfirst.ai/docs/api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=people-enrichment-api-pricing
- https://cdn.knowfirst.ai/api/spec/knowfirst-v1.yaml?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=people-enrichment-api-pricing
- https://knowfirst.ai/api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=people-enrichment-api-pricing
- https://knowfirst.ai/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=people-enrichment-api-pricing
- https://knowfirst.ai/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=people-enrichment-api-pricing