# Particle, pay as you go: Company discovery API

> Returns a paginated list of companies, ranked by news coverage (most-covered first), then name. Filter by entity slug (e.g., 'apple'), ticker, domain, CIK, or QID. Search by name or fetch updates since a timestamp.

Particle's x402 / MPP plan for the company discovery API costs $0.10 per 1,000 companies. Particle's docs list 3 of the 13 fields on our checklist: Description, Type and status, Images.
We haven't run Particle through [our company discovery API benchmark](https://datacircle.dev/best-company-discovery-api.txt) yet.
We rank 1,009 plans for company discovery APIs by price. Half the plans cost $1.00 or less per 1,000 companies. This plan costs less per 1,000 companies than 67% of the 1,009 plans.
[StackScan's $189 monthly plan](https://datacircle.dev/company-discovery-apis/stackscan/189-monthly-enterprise-post-v1-tech-lookup-lists/llms.txt) is the cheapest paid plan per 1,000 companies. StackScan's $189 monthly plan charges nothing per call. You get as many companies as StackScan's rate limit allows. [Seltz's pay-as-you-go plan](https://datacircle.dev/company-discovery-apis/seltz/pay-as-you-go-pay-as-you-go-post-v1-search-search-base/llms.txt) costs the least for 10,000 companies a month: $0.03.
[PeopleSearch.im's $5 pack](https://datacircle.dev/company-discovery-apis/peoplesearch-im/5-pack/llms.txt) covers any number of companies. PeopleSearch.im's $5 pack costs less up front than StackScan's $189 monthly plan.
[GetProspect](https://datacircle.dev/company-discovery-apis/getprospect/49-monthly/llms.txt), [Hunter](https://datacircle.dev/company-discovery-apis/hunter/49-monthly-starter-post-discover/llms.txt) and [PeopleSearch.im](https://datacircle.dev/company-discovery-apis/peoplesearch-im/5-pack/llms.txt) are the best company discovery API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/company-discovery-apis/particle/pay-as-you-go
- [Company discovery API: the best of 90+ providers compared](https://datacircle.dev/best-company-discovery-api.txt)
- Get it: https://api.particle.pro/.well-known/x402?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- Request: `GET https://api.particle.pro/v1/companies`
- API key: not needed
- Its API docs: https://docs.particle.pro/api-reference/companies/list-companies?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- Sold by: Particle (https://particle.pro?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing)
- Checked: 2026-11-08

## In the answer

- Completeness: 23%
- Description: ✓
- Type and status: ✓
- Images: ✓

## Price

- $ per 1,000 companies: $0.10
- Per: page of 100
- Billing: pay as you go

## Aggregators

- Aggregators: none

## Charges

- Also pays for: nothing else

## In their words

- Their pitch: Returns a paginated list of companies, ranked by news coverage (most-covered first), then name. Filter by entity slug (e.g., 'apple'), ticker, domain, CIK, or QID. Search by name or fetch updates since a timestamp.

## Data

- Keep data: reasonable caching necessary for real-time display or operational functionality (6.7: You will not "download, save, or locally store Clips, Transcripts, or other API Output outside of reasonable caching necessary for real-time display or operational functionality"), on termination, delete all API Output from production systems within thirty (30) days (15.6)
- Use data: 4.1: a limited, non-exclusive, non-transferable, non-sublicensable, revocable license to (a) access the API Services using your API Keys, (b) integrate the API Services into your Customer Applications, and (c) display API Output to end users of your Customer Applications. 5.1: You must display all attribution information included in the API Output. 6.1: You will not, and will not permit any third party to: (a) use the API Services or API Output to train, fine-tune, or otherwise develop any machine learning model, artificial intelligence system, or similar technology, (b) redistribute, resell, sublicense, or otherwise make API Output available to third parties outside of your Customer Application [...], (c) use API Output as a substitute for, or in a manner that reduces the need for end users to access, the original source content [...], (g) use the API Services for any competitive intelligence purpose or to build a product or service that competes with the API Services [...]. 6.9: You will not use the API Services for any commercial purpose unless you are subscribed to the Growth, Business, or Enterprise plan.

## Plan

- Pay: per call

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: nothing required. Optional: q, ids, ticker, domain, cik, qid, entity_id, updated_after, limit, cursor
- Method: GET
- Path: /v1/companies

## About the plan

- Plan: x402 / MPP
- Who can get it: non-commercial use only, the API terms' 6.9 say 'You will not use the API Services for any commercial purpose unless you are subscribed to the Growth, Business, or Enterprise plan', so commercial use needs a Business or Enterprise plan, no account or API key, each call paid in USDC on Base from a wallet (x402 or MPP)

## The 34 fields the plan's answer can hold

ID, slug, name, description, image URL, updated at, domain, ticker, CIK, Wikidata QID, entity ID, entity slug, entity name, entity description, entity image URL, entity type name, entity type slug, Wikipedia URL, entity company ID, entity company domain, entity company ticker, entity person ID, entity person company, entity person image URL, entity person title, external link platform name, external link platform display name, external link platform type, external link identifier, external link URL, external link attribute category, external link attribute name, external link attribute observed at, external link attribute value

## Particle's plans (4)

- [Particle, pay as you go](https://datacircle.dev/company-discovery-apis/particle/pay-as-you-go/llms.txt): $0.10 per 1,000, 23% complete
- [Particle, $29 monthly](https://datacircle.dev/company-discovery-apis/particle/29-monthly/llms.txt): $0.029 per 1,000, 23% complete
- [Particle, $399 monthly](https://datacircle.dev/company-discovery-apis/particle/399-monthly/llms.txt): $0.04 per 1,000, 23% complete
- [Particle, contact us](https://datacircle.dev/company-discovery-apis/particle/contact-us/llms.txt): 23% complete

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

- `GET /v1/companies`: [Particle, pay as you go](https://datacircle.dev/company-discovery-apis/particle/pay-as-you-go/llms.txt)

## Particle's APIs (4)

- [Particle: company discovery API pricing, 4 plans](https://datacircle.dev/company-discovery-apis/particle/pay-as-you-go/llms.txt)
- [Particle: company enrichment API pricing, 4 plans](https://datacircle.dev/company-enrichment-apis/particle/pay-as-you-go/llms.txt)
- [Particle: people enrichment API pricing, 4 plans](https://datacircle.dev/person-enrichment-apis/particle/pay-as-you-go/llms.txt)
- [Particle: people search API pricing, 4 plans, GET /v1/people/expertise](https://datacircle.dev/people-search-apis/particle/pay-as-you-go-x402-mpp-get-v1-people-expertise/llms.txt)
- [Particle: people search API pricing, 4 plans, GET /v1/companies/{id}/people](https://datacircle.dev/people-search-apis/particle/pay-as-you-go-x402-mpp-get-v1-companies-id-people/llms.txt)

## Particle: company discovery API alternatives

- [OneShot, pay as you go](https://datacircle.dev/company-discovery-apis/oneshot/pay-as-you-go/llms.txt): $0.10 per 1,000, 54% complete, stored
- [Captapi, $10 pack](https://datacircle.dev/company-discovery-apis/captapi/10-pack/llms.txt): $0.10 per 1,000, 38% complete, live
- [SerpKite, $10 pack](https://datacircle.dev/company-discovery-apis/serpkite/10-pack/llms.txt): $0.10 per 1,000, 23% complete, live
- [Context.dev, $500 monthly](https://datacircle.dev/company-discovery-apis/context-dev/500-monthly/llms.txt): $0.10 per 1,000, 54% 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 2026-11-08.

- https://api.particle.pro/.well-known/x402?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://api.particle.pro/llms.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://api.particle.pro/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://docs.particle.pro/x402?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://particle.pro/legal/tos-api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://particle.pro/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing