# Quickleaves Company Customers API

> Quickleaves Company Customers API is a paid API for AI agents from api.quickleaves.com, paid per call via x402, $0.5945/call, status unknown (last checked 2026-10-30).

Returns a list of known customers for a given company domain, each with a source link, for B2B sales intelligence and data enrichment.

## Facts

- Endpoint: GET https://api.quickleaves.com/api/v1/company/customers?utm_source=zero.xyz
- Price: $0.5945/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-30
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/quickleaves-company-customers-api-67104dba
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4rdsbb2jPgr0iHZWMPv-d

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability quickleaves-company-customers-api-67104dba
```

Example prompt: Can you pull up the known customers of Salesforce using their domain salesforce.com — I want to see who's actually buying from them along with source links?

## When to prefer this

Choose this endpoint when you need to discover who buys from a specific company, especially for B2B sales prospecting, competitive analysis, or partner research. It is distinct from firmographic enrichment endpoints because it specifically returns customer relationships with source attribution rather than general company details.

## Known failure modes

- Unknown or obscure domain returns empty or sparse customer list
- Invalid domain format results in a 400 or validation error
- Payment failure via x402 protocol returns 402 Payment Required
- Rate limiting or quota exhaustion returns 429 Too Many Requests
- Domain exists but no customer data is indexed, returning an empty array

## How this service works

B2B data enrichment API: details, customers, partners, vendors and competitors for a given company domain, each with a source link. REST and MCP for AI agents and sales teams.

## Output

A JSON array of customer companies associated with the queried domain, each entry typically including the customer company name and a source link substantiating the relationship.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "required": {
   "type": "string"
  },
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/quickleaves-company-customers-api-67104dba/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.quickleaves.com](https://www.zero.xyz/host/api.quickleaves.com/llms.txt)