Enrich companies by domain in Clay

Each matched domain returns the company card below. Fields we do not have come back as null; nothing is filled with a guess.

Coverage focuses on technology and product companies and their funding and investors. It is not a registry of every business, so expect misses on agencies, local services and very new companies.

• An Indexed API key. Create one at Developer · API keys; it starts with idx_.
• A Clay table with a column of company domains or website URLs. This guide calls it Domain.
• Domain lookups are included in a daily search quota on every plan. Lookups that find nothing never count.

1. 1

   Save your key as a header account

   In the table, click Add enrichment, search for HTTP API, open Select header account and choose + Add account. Under API Request Headers add Key X-API-Key with your key as the Value, name the account (for example Indexed API) and save. Clay stores it encrypted at the workspace level, so the key is not visible in the column settings.
2. 2

   Configure the request

   On the Configure tab set Method to GET and the Endpoint URL to https://indexed.vc/api/v1/companies. Under Query string parameters add Key domain and for the Value type / and pick your domain column, so it reads /Domain. Bare domains (stripe.com) and full URLs (https://www.stripe.com/pricing) both work; only the host is used.
3. 3

   Set rate limiting

   Set Request limit to 30 and Duration (ms) to 60000. That fits every plan's per-minute limit. See rate limits before raising it.
4. 4

   Set run conditions

   Under Run Settings, add an Only run if formula so empty rows are skipped, for example !!{{Domain}}. Leave Auto-update on if new rows should enrich as they arrive, or turn it off to run the column manually.
5. 5

   Test, then run

   Leave Field paths to return empty so the full response is kept. Test on a single row, open the cell to check the result, then run the column on the table and add the fields you want as columns.

The same request from a terminal:

curl "https://indexed.vc/api/v1/companies?domain=stripe.com" \
  -H "X-API-Key: idx_YOUR_KEY_HERE"

The response for a Silver key. Company values are the Stripe record as stored on 2026-09-25 and change as the record is updated; id and logo_url are shortened.

{
  "data": [
    {
      "id": "<uuid>",
      "name": "Stripe",
      "slug": "stripe",
      "logo_url": "<logo url>",
      "website": "http://stripe.com",
      "short_description": "Stripe provides payments, billing, money-management, fraud-prevention, and identity tools that help businesses accept payments and manage online commerce.",
      "industries": [
        "Banking",
        "Fintech",
        "SaaS",
        "Payments",
        "Developer Tools"
      ],
      "hq_city": "South San Francisco",
      "hq_country": "United States",
      "employee_count_range": "5001-10000",
      "total_funding_raised": 8755000000,
      "last_funding_date": "2023-03-15",
      "last_funding_type": "series_g_plus",
      "last_valuation": 107000000000,
      "operating_status": "active",
      "estimated_revenue_range": null,
      "_revealed": false,
      "domain_match": {
        "queried": "stripe.com",
        "canonical_domain": "stripe.com",
        "matched_via": "canonical_domain"
      }
    }
  ],
  "meta": {
    "total": 1,
    "page": 1,
    "limit": 25,
    "hasMore": false,
    "revealed_count": 0,
    "unrevealed_count": 1,
    "search_quota": {
      "per_day": 250,
      "used_today": 1,
      "remaining_today": 249,
      "resets_at": "2026-09-26T00:00:00.000Z"
    },
    "depth": {
      "endpoint": "GET /api/v1/companies/{slug}?depth=full",
      "cost_credits": 3,
      "unlocks": [
        "funding_rounds",
        "investors",
        "tech_stack",
        "app_stack",
        "valuations"
      ],
      "docs": "https://indexed.vc/docs/api#credits"
    }
  }
}

When a domain belongs to more than one company record (a parent and a sub-site), the most specific host is listed first, so data[0] is the right default.

A domain we do not cover is not an error. The request returns 200 with an empty data array, costs nothing and does not count toward the daily quota. Map meta.total to a column to filter found (1 or more) from missed (0) rows.

{
  "data": [],
  "coverage_requested": true,
  "coverage_status": "queued",
  "meta": {
    "total": 0,
    "page": 1,
    "limit": 25,
    "hasMore": false,
    "revealed_count": 0,
    "unrevealed_count": 0,
    "search_quota": {
      "per_day": 250,
      "used_today": 0,
      "remaining_today": 250,
      "resets_at": "2026-09-26T00:00:00.000Z"
    }
  }
}

coverage_requested: true means the domain was recorded for manual review; false means recording failed (retry later) or the company is outside coverage scope. Review does not guarantee the company will be added. coverage_status says why it missed:

If the domain belongs to an investor rather than a company, meta.alternate_entities points to the investor profile.

Fetching the same full profile again within 12 months is free, so re-running a table does not charge twice. Every response carries X-Credits-Cost and, for searches, X-Search-Quota-Remaining. See pricing for monthly credits by plan.

Batch lookup has no daily quota and charges 1 credit per matched domain on every plan, Free included. Use the same header account with these settings:

Keep the quotes around /Domain in the body; Clay requires quotes around string column references. One invalid domain rejects the request with 400 VALIDATION_FAILED, so keep the Only run if formula.

Investors are not on the company card. First add data[0].slug from the lookup column as its own column, for example Indexed slug. Then add a second HTTP API column: Method GET, Endpoint URL https://indexed.vc/api/v1/companies/ followed by /Indexed slug, and Query string parameter depth = full. Set Only run if to !!{{Indexed slug}} so misses are never sent. Each call costs 3 credits.

Limits apply per API key over a 60-second window; over the limit you get 429 RATE_LIMITED with a Retry-After header. On paid plans, a key that receives more than 2,000 search result rows in one hour is suspended automatically, and each matched domain is one row. 30 requests per minute stays under both limits. For faster runs, use batch lookup, which is not a search.

Errors return JSON with a readable error and a stable code. Clay shows the status on the cell; open it to read the body.

• HTTP API integration overview (https://university.clay.com/docs/http-api-integration-overview)
• Enrichments: run settings (Auto-update, Only run if) (https://university.clay.com/docs/enrichments)
• Formulas: conditional run formulas (https://university.clay.com/docs/formula-generator)