# Caller Kit, free: People enrichment API

> Caller ID & Phone Number Lookup API: Identify phone number owners and retrieve associated details.

Caller Kit's people enrichment API on its Free plan. It costs $0.00 per 1,000 people. Caller Kit's docs list 1 of the 13 key fields we check: Location.
We haven't run Caller Kit 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/caller-kit/free
- [People enrichment API: the 10 best providers compared](https://datacircle.dev/best-people-enrichment-api.txt)
- Get it: https://caller-kit.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=people-enrichment-api-pricing
- Request: `POST https://caller-kit.com/api/v1/search/number`
- API key: with the plan, on https://caller-kit.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=people-enrichment-api-pricing
- Its API docs: https://caller-kit.com/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=people-enrichment-api-pricing
- Sold by: Caller Kit (https://caller-kit.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=people-enrichment-api-pricing)
- Checked: 2026-11-06

## In the answer

- Completeness: 8%
- Location: ✓

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Also pays for: nothing else

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Caller ID & Phone Number Lookup API: Identify phone number owners and retrieve associated details.

## Data

- Freshness: 1 day
- Countries: Worldwide
- Keep data: no limit
- Use data: You may use the Services only for lawful and legitimate business, technical, identification, enrichment, verification, or other purposes permitted by these Terms and applicable law. [...] You must not use the Services: For unlawful, fraudulent, deceptive, abusive, or harmful activities, For harassment, stalking, unauthorized surveillance, or other abusive identification practices, For unsolicited communications, spam, or unlawful marketing activities, In a manner that violates applicable privacy, data protection, telecommunications, consumer protection, or other laws, [...] To scrape, systematically extract, copy, mirror, or reproduce the CallerKit database or substantial portions of the Services without prior written authorization, To resell, redistribute, sublicense, or provide unauthorized access to CallerKit Data or API access.

## Plan

- Pay: $0
- You get: 10 credits a month
- Enough for: 10 results a month

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: country_code, number, Content-Type header "application/json", Accept header "application/json". Optional: page, per_page
- Method: POST
- Path: /search/number

## About the plan

- Plan: Free
- Who can get it: anyone 18 or older with a Google account (on behalf of an organization: with the authority to bind it)

## The 7 fields the plan's answer can hold

phone number, country, name, aliases, alias score, emails, social profiles

## Caller Kit's plans (14)

- [Caller Kit, free](https://datacircle.dev/person-enrichment-apis/caller-kit/free/llms.txt): $0.00 per 1,000, 8% complete, 1 day
- [Caller Kit, $299 pack](https://datacircle.dev/person-enrichment-apis/caller-kit/299-pack/llms.txt): $5.98 per 1,000, 8% complete, 1 day
- [Caller Kit, $499 pack](https://datacircle.dev/person-enrichment-apis/caller-kit/499-pack/llms.txt): $4.99 per 1,000, 8% complete, 1 day
- [Caller Kit, $1,499 pack](https://datacircle.dev/person-enrichment-apis/caller-kit/1499-pack/llms.txt): $2.998 per 1,000, 8% complete, 1 day
- [Caller Kit, $3,999 pack](https://datacircle.dev/person-enrichment-apis/caller-kit/3999-pack/llms.txt): $1.9995 per 1,000, 8% complete, 1 day
- [Caller Kit, $8,999 pack](https://datacircle.dev/person-enrichment-apis/caller-kit/8999-pack/llms.txt): $1.80 per 1,000, 8% complete, 1 day
- [Caller Kit, $50 monthly](https://datacircle.dev/person-enrichment-apis/caller-kit/50-monthly/llms.txt): $10.00 per 1,000, 8% complete, 1 day
- [Caller Kit, $119 monthly](https://datacircle.dev/person-enrichment-apis/caller-kit/119-monthly/llms.txt): $5.95 per 1,000, 8% complete, 1 day
- [Caller Kit, $239 monthly](https://datacircle.dev/person-enrichment-apis/caller-kit/239-monthly/llms.txt): $4.78 per 1,000, 8% complete, 1 day
- [Caller Kit, $399 monthly](https://datacircle.dev/person-enrichment-apis/caller-kit/399-monthly/llms.txt): $3.99 per 1,000, 8% complete, 1 day
- [Caller Kit, $1,199 monthly](https://datacircle.dev/person-enrichment-apis/caller-kit/1199-monthly/llms.txt): $2.398 per 1,000, 8% complete, 1 day
- [Caller Kit, $3,199 monthly](https://datacircle.dev/person-enrichment-apis/caller-kit/3199-monthly/llms.txt): $1.60 per 1,000, 8% complete, 1 day
- [Caller Kit, $6,999 monthly](https://datacircle.dev/person-enrichment-apis/caller-kit/6999-monthly/llms.txt): $1.40 per 1,000, 8% complete, 1 day
- [Caller Kit, contact us](https://datacircle.dev/person-enrichment-apis/caller-kit/contact-us/llms.txt): 8% complete, 1 day

## Caller Kit's calls for this API (1)

- `POST /search/number`: [Caller Kit, free](https://datacircle.dev/person-enrichment-apis/caller-kit/free/llms.txt)

## Caller Kit's APIs (3)

- [Caller Kit: people enrichment API pricing, 14 plans](https://datacircle.dev/person-enrichment-apis/caller-kit/free/llms.txt)
- [Caller Kit: people search API pricing, 13 plans](https://datacircle.dev/people-search-apis/caller-kit/299-pack/llms.txt)
- [Caller Kit: reverse email lookup API pricing, 13 plans](https://datacircle.dev/reverse-email-lookup-apis/caller-kit/299-pack/llms.txt)

## Caller Kit: people enrichment API alternatives

- [Mawsool International FZCO on Apify, $19 monthly](https://datacircle.dev/person-enrichment-apis/mawsool-international-fzco-on-apify/19-monthly/llms.txt): $0.90 per 1,000, 62% complete, live
- [BigDataCorp, R$26,000 monthly](https://datacircle.dev/person-enrichment-apis/bigdatacorp/r-26000-monthly/llms.txt): $1.023 per 1,000, 0% complete, 1 day
- [ExploreYC, $50 monthly](https://datacircle.dev/person-enrichment-apis/exploreyc/50-monthly/llms.txt): $3.333 per 1,000, 0% complete, 1 day
- [Clair, $300 monthly](https://datacircle.dev/person-enrichment-apis/clair/300-monthly/llms.txt): $4.00 per 1,000, 31% 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 2026-11-06.

- https://caller-kit.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=people-enrichment-api-pricing
- https://caller-kit.com/api-playground?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=people-enrichment-api-pricing
- https://caller-kit.com/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=people-enrichment-api-pricing
- https://caller-kit.com/page/terms-conditions?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=people-enrichment-api-pricing
- https://caller-kit.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=people-enrichment-api-pricing
- https://caller-kit.com/request-docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=people-enrichment-api-pricing