The Source Policy feature allows you to precisely control which domains Parallel processors can access during web research. It’s available for both the Parallel Task API and Search API and lets you tailor search results by specifying domains to include or exclude, ensuring more relevant and trustworthy information.

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Configuration

You can configure domain control by setting the following parameters:
ParameterTypeDescription
include_domainsarray[string]List of domains to allow. Only sources from these domains will be included in results.
exclude_domainsarray[string]List of domains to block. Sources from these domains will be excluded from results.
Specifying an apex domain such as example.com will automatically include all its subdomains (e.g., www.example.com, blog.example.com, api.example.com).
You can specify up to 10 domains per request. Exceeding this limit will raise a validation error.
curl -X POST "https://api.parallel.ai/v1/tasks/runs" \
  -H "x-api-key: PARALLEL_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
      "input": "How many employees does Parallel Web Systems have?",
      "processor": "core",
      "source_policy": {
        "include_domains": ["linkedin.com"]
      }
    }'

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Best Practices

  • Use either include_domains or exclude_domains in a single query. Specifying exclude_domains is redundant when include_domains is set, as only include_domains will be applied.
  • List each domain in its apex form (e.g., example.com). Do not include schemes (http://, https://) or subdomain prefixes (such as www.).
  • Wildcards cannot be used in domain specifications. Each domain must be explicitly listed.
  • Although there is a maximum limit of 10 domains, carefully using specific and targeted domains will give better results.