# Hunter Discover API

[Tools](/tools) / [Company And People Data](/tools/category/company-and-people-data) / [Hunter Discover](/tools/hunterio/discover)

Search a B2B company database with structured filters like location, industry, and size.

Data from [Hunter](/providers/hunterio).

Category: [Company And People Data](/tools/category/company-and-people-data)

## Price

$0.0001 per successful call ≈ 10,000 calls with the $1 signup credit.

Input schema is not available in the local snapshot. Call inspect first; fill body and queryParams as required and replace any pathParams placeholders before running.

## Discover

```sh
curl https://keepbal.com/apis/v1/discover -H 'Authorization: Bearer YOUR_KEEPBAL_KEY' -H 'Content-Type: application/json' -d '{"query":"Hunter"}'
```

## Inspect

```sh
curl https://keepbal.com/apis/v1/inspect -H 'Authorization: Bearer YOUR_KEEPBAL_KEY' -H 'Content-Type: application/json' -d '{"publicId":"hunterio/discover"}'
```

## curl

```sh
curl https://keepbal.com/apis/v1/hunterio/discover \
  -H 'Authorization: Bearer YOUR_KEEPBAL_KEY' \
  -H 'Content-Type: application/json' \
  -d '{}'
```

## MCP run_tool

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "run_tool",
    "arguments": {
      "tool": "hunterio/discover",
      "input": {}
    }
  }
}
```

## Python

```python
import json, os, requests

# Inspect first and replace input_data with the required parameters.
input_data = json.loads("{}")
response = requests.post(
    "https://keepbal.com/apis/v1/hunterio/discover",
    headers={"Authorization": "Bearer " + os.environ["KEEPBAL_API_KEY"]},
    json=input_data,
)
response.raise_for_status()
print(response.json())
```

## Errors and billing

Failed provider calls are not charged. HTTP 400 invalid_request means invalid JSON or parameters, including missing pathParams. HTTP 401 missing_api_key or invalid_api_key means authentication is required. HTTP 402 insufficient_credits means insufficient balance; top up before retrying. HTTP 503 provider_unavailable means the provider is unavailable. A pending run can settle later; poll GET /apis/v1/runs/{id} instead of starting another execution.

## How much does this API cost?

$0.0001 per successful call

## How do I start?

Create a KeepBal account with $1 free credit, obtain an API key, and inspect this tool before running it.

## Related tools

- [Hunter Combined Find](/tools/hunterio/combined-find) — Look up a person's profile and their company's profile from one email address. — $0.006615 per successful call
- [Hunter Companies Find](/tools/hunterio/companies-find) — Look up a company's full profile — industry, size, location, tech stack — from its domain. — $0.006615 per successful call
- [Hunter Discover AI](/tools/hunterio/discover-ai) — Describe target companies in plain language; an AI picks the filters and runs the search. — $0.135 per successful call
- [Hunter Discover People](/tools/hunterio/discover-people) — Estimate how many people are reachable across every company matching your filters. — $0.0001 per successful call
- [Hunter Domain Finder](/tools/hunterio/domain-finder) — Resolve a company name into its most likely domain name\(s\). — $0.0001 per successful call
- [Hunter Domain Search](/tools/hunterio/domain-search) — List all email addresses found for a domain, with sources and confidence scores. — Variable: provider price plus 35%



[Start with $1 free credit](/sign-up)

[Tools](/tools) · [MCP documentation](/docs/mcp)