# Autobound, free, Free, POST /v1/contacts/search: Cached leadership change API

> Work Milestone signals detect career transitions and tenure moments — job changes, promotions, and work anniversaries — across 80M+ contacts.

Autobound's cached leadership change API on its Free plan. It costs $0.00 per 1,000 changes. It returns all 3 key fields we check: Change, Person, Company.

- This page: https://datacircle.dev/cached-leadership-change-apis/autobound/free-free-post-v1-contacts-search
- Get it: https://www.autobound.ai/pricing
- Its API docs: https://autobound-api.readme.io/reference/searchcontacts
- Sold by: Autobound (https://www.autobound.ai)
- Checked: 2026-10-23

## In the answer

- Completeness: 100%
- Change: ✓
- Person: ✓
- Company: ✓

## Price

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

## Charges

- Per: result
- Also pays for: from the same budget: POST /v1/contacts/enrich · POST /v1/companies/search · POST /v1/companies/enrich · POST /v1/buyer-intent/companies · POST /v1/buyer-intent/contacts · POST /v1/buyer-intent/export

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Work Milestone signals detect career transitions and tenure moments — job changes, promotions, and work anniversaries — across 80M+ contacts.

## Data

- Freshness: 1 week
- Keep data: license to access and use the Services solely for Customer’s internal business purposes during the term of this Agreement [...] Customer shall retain a perpetual, non-exclusive license to use, copy, and distribute any Reports generated through the Services prior to the date of termination or expiration, solely for Customer’s internal business purposes
- Use data: Company hereby grants Customer a non-exclusive, nontransferable, revocable license to access and use the Services solely for Customer’s internal business purposes during the term of this Agreement. [...] Customer shall not, and shall not permit any third party to: Reverse engineer, decompile, disassemble, or otherwise attempt to derive the source code, algorithms, or underlying structure of the Services or any component thereof, Modify, adapt, translate, or create derivative works based upon the Services, Resell, sublicense, lease, rent, loan, distribute, or otherwise make the Services available to any third party, except as expressly authorized in writing by Company, Remove, alter, or obscure any proprietary notices, labels, or markings on or in the Services, Use the Services in a manner that could damage, disable, overburden, or impair Company’s servers, networks, or infrastructure.

## Plan

- Pay: $0
- You get: 1,000 credits
- Enough for: 500 results, once

## Rate limit

- Per second: 5
- Batch: 100

## The call

- You send: company_domains, signal_types "work-milestones". Optional: signal_subtype, signal_subtypes, detected_after, detected_before, limit, offset, signals_per_entity, company_domain, industries, employee_count_min, employee_count_max, revenue_min, revenue_max, seniority, department, job_title
- Method: POST
- Path: /v1/contacts/search

## About the plan

- Plan: Free
- Who can get it: anyone who signs up, no credit card required

## The 74 fields the plan's answer can hold

offset, limit, has more, hint, notice, warnings, filters applied, suggestion, data freshness, freshness suggestion, email, person LinkedIn URL, first name, last name, person name, person current title, person city, person state, person country, signal count, most recent signal at, company name, company domain, company LinkedIn URL, company industries, company employee count minimum, company employee count maximum, company description, signal ID, signal type, change type, signal name, detected at, association, effective date, months since change, new title, new role description, old title, old role description, new company domain, taken from, old company domain, new location, old location, founded new company, work anniversary year, confidence, person ID, person headline, person current seniority, person current department, person current job start date, person work history, person education, person skills, emails, email type, email status, email verification date, company ID, company headquarters city, company headquarters state, company headquarters country, company founded year, company employees on LinkedIn, company is B2B, company is B2C, company employee count confidence, company revenue confidence, company industry confidence, company products, company services, company target customer

## Autobound's plans (10)

- [Autobound, free, Free, POST /v1/contacts/search](https://datacircle.dev/cached-leadership-change-apis/autobound/free-free-post-v1-contacts-search/llms.txt): $0.00 per 1,000, 100% complete, 1 week
- [Autobound, $19 pack, Starter, POST /v1/contacts/search](https://datacircle.dev/cached-leadership-change-apis/autobound/19-pack-starter-post-v1-contacts-search/llms.txt): $20.00 per 1,000, 100% complete, 1 week
- [Autobound, $49 pack, Growth, POST /v1/contacts/search](https://datacircle.dev/cached-leadership-change-apis/autobound/49-pack-growth-post-v1-contacts-search/llms.txt): $18.002 per 1,000, 100% complete, 1 week
- [Autobound, $149 pack, Scale, POST /v1/contacts/search](https://datacircle.dev/cached-leadership-change-apis/autobound/149-pack-scale-post-v1-contacts-search/llms.txt): $15.00 per 1,000, 100% complete, 1 week
- [Autobound, $499 pack, Pro, POST /v1/contacts/search](https://datacircle.dev/cached-leadership-change-apis/autobound/499-pack-pro-post-v1-contacts-search/llms.txt): $12.00 per 1,000, 100% complete, 1 week
- [Autobound, $1,299 pack, Business, POST /v1/contacts/search](https://datacircle.dev/cached-leadership-change-apis/autobound/1299-pack-business-post-v1-contacts-search/llms.txt): $9.00 per 1,000, 100% complete, 1 week
- [Autobound, $4,999 pack, Enterprise, POST /v1/contacts/search](https://datacircle.dev/cached-leadership-change-apis/autobound/4999-pack-enterprise-post-v1-contacts-search/llms.txt): $8.00 per 1,000, 100% complete, 1 week
- [Autobound, $10,000 pack, Enterprise credit pack, 2.6M credits, POST /v1/contacts/search](https://datacircle.dev/cached-leadership-change-apis/autobound/10000-pack-enterprise-credit-pack-2-6m-credits-post-v1-contacts-search/llms.txt): $7.692 per 1,000, 100% complete, 1 week
- [Autobound, $40,000 pack, Enterprise credit pack, 11.5M credits, POST /v1/contacts/search](https://datacircle.dev/cached-leadership-change-apis/autobound/40000-pack-enterprise-credit-pack-11-5m-credits-post-v1-contacts-search/llms.txt): $6.957 per 1,000, 100% complete, 1 week
- [Autobound, contact us, Custom volume, POST /v1/contacts/search](https://datacircle.dev/cached-leadership-change-apis/autobound/contact-us-custom-volume-post-v1-contacts-search/llms.txt): 100% complete, 1 week

## Autobound's calls (2)

- `POST /v1/companies/enrich`: [Autobound, free, Free, POST /v1/companies/enrich](https://datacircle.dev/cached-leadership-change-apis/autobound/free-free-post-v1-companies-enrich/llms.txt)
- `POST /v1/contacts/search`: [Autobound, free, Free, POST /v1/contacts/search](https://datacircle.dev/cached-leadership-change-apis/autobound/free-free-post-v1-contacts-search/llms.txt)

## Autobound's APIs (11)

- [Autobound: cached company enrichment API pricing, 10 plans](https://datacircle.dev/cached-company-enrichment-apis/autobound/free/llms.txt)
- [Autobound: cached company funding API pricing, 10 plans](https://datacircle.dev/cached-company-funding-apis/autobound/free/llms.txt)
- [Autobound: person enrichment API pricing, 10 plans](https://datacircle.dev/person-enrichment-apis/autobound/free/llms.txt)
- [Autobound: cached LinkedIn company post API pricing, 10 plans](https://datacircle.dev/cached-linkedin-company-post-apis/autobound/free/llms.txt)
- [Autobound: LinkedIn person comment API pricing, 10 plans](https://datacircle.dev/linkedin-person-comment-apis/autobound/free/llms.txt)
- [Autobound: cached LinkedIn person post API pricing, 10 plans](https://datacircle.dev/cached-linkedin-person-post-apis/autobound/free/llms.txt)
- [Autobound: LinkedIn person reaction API pricing, 10 plans](https://datacircle.dev/linkedin-person-reaction-apis/autobound/free/llms.txt)
- [Autobound: cached leadership change API pricing, 10 plans, POST /v1/contacts/search](https://datacircle.dev/cached-leadership-change-apis/autobound/free-free-post-v1-contacts-search/llms.txt)
- [Autobound: company discovery API pricing, 10 plans](https://datacircle.dev/company-discovery-apis/autobound/free/llms.txt)
- [Autobound: cached people search API pricing, 10 plans, POST /v1/buyer-intent/contacts](https://datacircle.dev/cached-people-search-apis/autobound/free-free-post-v1-buyer-intent-contacts/llms.txt)
- [Autobound: cached people search API pricing, 10 plans, POST /v1/contacts/search](https://datacircle.dev/cached-people-search-apis/autobound/free-free-post-v1-contacts-search/llms.txt)
- [Autobound: cached company discovery API pricing, 10 plans](https://datacircle.dev/cached-company-discovery-apis/autobound/free/llms.txt)

## Autobound: cached leadership change API alternatives

- [The Swarm, free, 14-day free trial, POST /v3/profiles/fetch](https://datacircle.dev/cached-leadership-change-apis/the-swarm/free-14-day-free-trial-post-v3-profiles-fetch/llms.txt): $0.00 per 1,000, 100% complete, 1 day
- [Intellizence, free](https://datacircle.dev/cached-leadership-change-apis/intellizence/free/llms.txt): $0.00 per 1,000, 100% complete, 1 day

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-10-23.

- https://autobound-api.readme.io/changelog/richer-company-and-contact-data-on-enrich-plus-live-linkedin-posts
- https://autobound-api.readme.io/docs/credits
- https://autobound-api.readme.io/docs/work-milestone
- https://autobound-api.readme.io/reference/searchbuyerintentcompanies
- https://autobound-api.readme.io/reference/searchcontacts
- https://www.autobound.ai/apis/company-enrichment-api
- https://www.autobound.ai/apis/contact-enrichment-api
- https://www.autobound.ai/master-services-agreement
- https://www.autobound.ai/pricing