# Happenstance, top-up: People enrichment API

> Add network search and person research to your agent or application. Start with the REST API, MCP server, or CLI.

Happenstance's API credits plan lets you call the people enrichment API. Happenstance's docs list 4 of the 13 fields on our checklist: Experience, Education, About, Location.
In [our people enrichment API benchmark](https://datacircle.dev/best-people-enrichment-api.txt), this plan scores 37.9 out of 100. Happenstance ranks 13th of 19 providers.
This plan costs . We rank 260 plans for people enrichment APIs by price. Half the plans cost $19.80 per 1,000 people or less.
[Coldlytics's $49 monthly plan](https://datacircle.dev/person-enrichment-apis/coldlytics/49-monthly/llms.txt) costs the least per 1,000 people. Coldlytics's people enrichment API costs nothing beyond the plan price.
[LeadMCP](https://datacircle.dev/person-enrichment-apis/leadmcp/49-monthly/llms.txt), [RecruitMCP](https://datacircle.dev/person-enrichment-apis/recruitmcp/399-monthly-scale-post-v1-people-enrich/llms.txt) and [GetProspect](https://datacircle.dev/person-enrichment-apis/getprospect/399-monthly-growth-50k-post-v2-people-enrich/llms.txt) are the best people enrichment API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/person-enrichment-apis/happenstance/top-up
- [People enrichment API: the 19 best providers compared](https://datacircle.dev/best-people-enrichment-api.txt)
- Get it: https://happenstance.ai/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=people-enrichment-api-pricing
- Request: `POST https://api.happenstance.ai/v1/research`
- API key: with the plan, on https://happenstance.ai/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=people-enrichment-api-pricing
- Its API docs: https://developer.happenstance.ai/api-reference/create-research?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=people-enrichment-api-pricing
- Sold by: Happenstance (https://happenstance.ai?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=people-enrichment-api-pricing)
- Checked: 2026-11-06

## In the answer

- Completeness: 31%
- Experience: ✓
- Education: ✓
- About: ✓
- Location: ✓

## Score

- Overall score: 37.9
- Price score: 0
- Accuracy score: 60
- Cost to get started score: 93
- Bundle score: 80
- Performance score: 2

## Price

- Per: call
- Billing: pay first

## Aggregators

- Aggregators: none

## Charges

- Also pays for: from the same budget: Create Search · Find More Search · Create Chat · Send Chat Message

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Add network search and person research to your agent or application. Start with the REST API, MCP server, or CLI.

## Data

- Keep data: no API terms
- Use data: no API terms

## Rate limit

- Concurrent: 10
- Batch: 1

## Speed

- Answer: by polling
- Median: 117.19 s

## The call

- You send: description
- Method: POST
- Path: /v1/research

## About the plan

- Plan: API credits
- Who can get it: anyone over 18 with a Happenstance account

## The 26 fields the plan's answer can hold

full name, alternate name, profile URL, location, location comment, tagline, company name, job title, job start date, job end date, job description, university name, degree, education start date, education end date, education description, project title, project description, project start date, project end date, writing title, writing description, writing date, hobby, summary, source URL

## Happenstance's plans (1)

- [Happenstance, top-up](https://datacircle.dev/person-enrichment-apis/happenstance/top-up/llms.txt): 31% complete

## Happenstance's calls (1)

- `POST /v1/research`: [Happenstance, top-up](https://datacircle.dev/person-enrichment-apis/happenstance/top-up/llms.txt)

## Happenstance's APIs (1)

- [Happenstance: people enrichment API pricing, 1 plan](https://datacircle.dev/person-enrichment-apis/happenstance/top-up/llms.txt)

## Happenstance: people enrichment API alternatives

- [Tamz, R$100 pack](https://datacircle.dev/person-enrichment-apis/tamz/r-100-pack/llms.txt): 23% complete
- [Mawsool International FZCO on Apify, $1 pack](https://datacircle.dev/person-enrichment-apis/mawsool-international-fzco-on-apify/1-pack/llms.txt): 62% complete, live
- [Clodura, top-up](https://datacircle.dev/person-enrichment-apis/clodura/top-up/llms.txt): 8% complete
- [Clodura.AI, top-up, CRM Cleanup API](https://datacircle.dev/person-enrichment-apis/clodura-ai/top-up-crm-cleanup-api/llms.txt): 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://developer.happenstance.ai/api-reference/introduction?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=people-enrichment-api-pricing
- https://developer.happenstance.ai/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=people-enrichment-api-pricing
- https://developer.happenstance.ai/quickstart?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=people-enrichment-api-pricing
- https://happenstance.ai/developers?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=people-enrichment-api-pricing
- https://happenstance.ai/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=people-enrichment-api-pricing
- https://happenstance.ai/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=people-enrichment-api-pricing