Contacts API [Starter]

The Contacts API enables searching for business contacts/personas using vector search, with support for similarity matching, filtering, and name-based lookup.

The primary endpoint is POST /v1/contacts/discover. The legacy GET /v1/contacts endpoint is still functional and documented at the end of this page for existing integrations.

Subscription Level

Feature	Required Plan
Base search	STARTER
inclusion_query_id	STARTER
exclusion_query_id	PRO

Discover Contacts

Endpoint

POST https://api.discolike.com/v1/contacts/discover

Search for business contacts and return them grouped by company domain, with per-company firmographic data on each entry. Billed additively: net-new contacts plus net-new firmo domains for any company surfaced for the first time in the 90-day cache window. The two counters share the same credit pool.

Request Body

JSON body. Every parameter documented below is accepted as a JSON field.

Search Parameters

Parameter	Description
persona_id	Use one or more persona IDs as the basis for similarity matching. Up to 10 IDs can be provided.
icp_prompt	Natural language ICP description. Automatically extracts structured contact filters (seniority, department, industry, country, employee/revenue range, title keywords) and cleans the semantic description. When the query requires company-level signals (tech stack, funding, product descriptions), automatically chains to company discovery to find matching companies first, then searches contacts there. One parameter does everything — preferred over setting individual filters manually.
icp_text	Natural language description of your ideal contact profile for semantic matching. Does NOT extract filters — use icp_prompt instead for automatic extraction.
domain	Limit results to contacts at specific domains.
inclusion_query_id	Include results from saved queries. Works with domain lists (scopes to companies) and contact lists (scopes to specific contacts). Requires Starter plan or higher.
exclusion_query_id	Exclude results from saved queries. Works with domain lists (excludes companies) and contact lists (excludes specific contacts). Requires Pro plan or higher.

Persona Filters

Parameter	Description
seniority	Filter by seniority level. Acceptable values: executive, vp, director, manager, senior_ic, mid_level, entry_level
negate_seniority	Exclude contacts with specified seniority levels.
department	Filter by department. Must be one of the 15 canonical values exactly (case-sensitive): Operations, Executive, Technology, Sales - Marketing, Finance, Legal, Human Resources, Medical - Science, Customer Service, Research & Development, Administration, Public Relations, Investor Relations, Pro Services, Other. Any other value returns 422. Use icp_prompt if you want natural-language extraction (e.g. “engineering leaders” → Technology).
negate_department	Exclude contacts in specified departments. Same 15 canonical values as department.
skills	Filter by skills. Multiple skills can be provided.
name	Filter by contact name (partial match supported).
title	Filter by job title. Each item is a separate match term. Supports quoted phrases and + prefix for required terms.
negate_title	Exclude contacts with specified job titles.
summary	Filter by profile summary text (semantic search).
negate_summary	Exclude contacts matching this summary description.
person_country	Filter by contact’s country using ISO-3166-1 alpha-2 codes. Also accepts region codes: ANZ, APAC, ASEAN, BENELUX, CEE, DACH, EMEA, EU, GCC, LATAM, MENA, NORDICS.
negate_person_country	Exclude contacts in specified countries.
person_state	Filter by contact’s state/region. Accepts ISO 3166-2 codes (e.g. CA, BY) or full names (e.g. California, Bayern). Scoped to a single person_country — rejected if multiple countries are passed. See States for supported countries.

Contact Data Filters

Parameter	Description
has_email	Set to true to only include contacts with email addresses.
email_validated	Set to true to only include contacts with validated email addresses. The email_validated flag reflects an SMTP/deliverability check on the address itself.
has_phone	Set to true to only include contacts with phone numbers.
has_mobile	Set to true to only include contacts whose phone array contains at least one mobile number.
has_linkedin	Set to true to only include contacts with LinkedIn profiles.
min_connections	Minimum LinkedIn connections required.

Company Filters

Parameter	Description
filter_industry	Filter by company industry. Uppercase enum values (e.g. SAAS, SOFTWARE, FINANCIAL_SERVICES, HEALTHCARE, CLOUD_COMPUTING). See BizData Dataset for the full enum.
negate_filter_industry	Exclude contacts at companies in specified industries.
filter_country	Filter by company country using ISO-3166-1 alpha-2 codes. Also accepts the same region aliases as person_country.
negate_filter_country	Exclude contacts at companies in specified countries.
filter_state	Filter by company state/region. Accepts ISO 3166-2 codes (e.g. CA, BY) or full names (e.g. California, Bayern). Scoped to a single filter_country — rejected if multiple countries are passed. See States for supported countries.
negate_filter_state	Exclude contacts at companies in specified states (same format as filter_state).
employee_range	Filter by company size. Format: 'min,max' (e.g. '51,200'). Maps to buckets: 1-10, 11-50, 51-200, 201-500, 501-1000, 1001-5000, 5001-10000, 10001+.
revenue_range	Deprecated, no-op. Revenue is a company-level attribute — filter on /discover by revenue_range and pass the resulting domains to /contacts/discover. The output field is still populated on each result.

Pagination & Output

Parameter	Description
max_records	Maximum contacts to return, range 20-10,000 (optional, defaults to 100). Use this for a literal total-contact cap. Do not combine with max_companies.
max_companies	Maximum enriched companies to return, range 1-10,000. Use this when you want the response to stop after up to N company/domain entries. Do not combine with max_records. When paired with results_by_company=0 (no per-company cap), the total is capped at 10,000 contacts.
offset	Records to skip for pagination (optional, defaults to 0).
results_by_company	Max contacts per company domain, range 0-100 (optional, defaults to 5). With max_companies, controls how many contacts can be returned under each enriched company. Example: max_companies=100, results_by_company=2 → up to 100 companies with up to 2 contacts each. Set results_by_company=0 to remove the per-company cap — with max_records, the total is capped at max_records; with max_companies, the total is capped at 10,000. Any non-zero value forces offset to 0.
include_search_contacts	Set to true to include input persona_ids in results (optional, defaults to false).
consensus	Number of top results to use for building search vector, range 1-20 (optional, defaults to 1).

Choosing a result cap

Use either max_companies or max_records, not both. max_companies caps the number of enriched company/domain entries in the grouped response. max_records caps the total number of contact rows.

Pagination

Use max_records with offset to paginate through large result sets. For example, to fetch 500 contacts in two pages:

• Page 1: max_records=250, offset=0, results_by_company=0
• Page 2: max_records=250, offset=250, results_by_company=0

max_companies always returns from the first page of matching enriched companies. Any non-zero results_by_company also forces offset to 0, so set results_by_company=0 with max_records if you need to page through a large result set.

Example Request

curl -X POST https://api.discolike.com/v1/contacts/discover \
  -H "x-discolike-key: API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "icp_prompt": "VP of Sales at SaaS companies",
    "filter_industry": ["SAAS"],
    "max_companies": 50,
    "results_by_company": 5
  }'

Example Response

{
  "results": {
    "stripe.com": {
      "domain": "stripe.com",
      "name": "Stripe",
      "employees": "10001+",
      "revenue_range": ">1B",
      "industry_groups": {"SAAS": 0.81, "SOFTWARE": 0.1},
      "address": {"country": "US", "state": "CA"},
      "email_pattern": "{first_name}@stripe.com",
      "email_pattern_confidence": 59,
      "email_pattern_guess": "marissa@stripe.com",
      "contacts": [
        {
          "persona_id": 319675651,
          "domain": "stripe.com",
          "name": "Marissa Fagnani",
          "title": "Delivery Manager",
          "department": "Technology",
          "seniority": "manager",
          "skills": ["program management", "delivery"],
          "phone": [
            {"phone": "+17406072462", "type": "mobile"},
            {"phone": "+14197337789", "type": "mobile"}
          ],
          "email": "marissa@stripe.com",
          "email_validated": true,
          "social_urls": ["https://www.linkedin.com/in/marissa-fagnani"],
          "connections": 500,
          "country": "US",
          "state": "OR",
          "industry": ["SAAS", "SOFTWARE"],
          "employees": "10001+",
          "revenue_range": ">1B",
          "similarity": 87,
          "summary": null,
          "company_name": "Stripe"
        }
      ]
    }
  },
  "total_contacts": 142,
  "total_domains": 38
}

Field Notes

• phone is an array of objects: [{"phone": "+E164", "type": "mobile" | "landline"}, ...]. A contact can have multiple entries. Type is re-derived per call from libphonenumber, so it is always populated when a phone is present.
• industry is an array of uppercase enum strings, e.g. ["SAAS", "SOFTWARE"]. See BizData Dataset for the full enum.
• department is one of the 15 values listed under Persona Filters.
• social_urls may include LinkedIn and X/Twitter URLs.

Search Modes

The endpoint supports three modes, selected by which parameters you provide:

1. Similarity mode — When persona_id, icp_text, or icp_prompt is provided. Uses vector search with cosine similarity scores (0-100 scale on the similarity field).
2. Domain mode — When only domain is provided. Returns all contacts at the specified domains matching filters.
3. Filter mode — When no search input is provided. Returns contacts matching the company and persona filters.

Discover Contacts — BYOK Generate

Endpoint

POST https://api.discolike.com/v1/contacts/discover/generate

Uses your own LLM and search provider (BYOK) to discover candidate contacts at a list of companies. Runs through the DiscoGen pipeline with web search always enabled — returns a task ID immediately, poll GET /discogen/status/{task_id} for per-domain contact rows plus the company’s inferred email pattern.

No platform billing per contact returned. Results may include hallucinated personas — treat email, linkedin_url, and other identifying fields as candidate data until validated.

Parameters

Parameter	Type	Required	Description
icp_text	String	Yes	Persona description (e.g., “VPs or Directors of Marketing at B2B SaaS”)
domains	Array	Yes	List of company domains to search at (max 10,000)
context_mode	String	No	What data the LLM sees: website (default), profile, domain
integration_id	String	No	LLM provider integration UUID. Uses your default if omitted
search_provider_id	String	No	Search provider UUID. Uses your default if omitted

Web search is always enabled server-side — contact discovery depends on LinkedIn/company-site lookups.

Response

{
  "task_id": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
  "column_name": ["name", "title", "department", "seniority", "email", "linkedin_url", "skills", "phone", "email_pattern", "email_pattern_confidence", "email_pattern_guess"],
  "status": "in_progress",
  "total_domains": 2
}

Result Schema (per domain, multi-row)

Each domain yields zero or more rows. Every row carries contact fields plus the company-wide email pattern (repeated per row):

Column	Type	Notes
name	String	Full name of the contact
title	String|null	Job title
department	String|null	One of the 15 canonical department values (see Persona Filters)
seniority	String|null	executive, vp, director, manager, senior_ic, mid_level, entry_level
email	String|null	Only if publicly verifiable
linkedin_url	String|null	LinkedIn profile URL
skills	Array|null	Skills attributed to the contact
phone	Array	Array of phone objects with phone (+E164) and type (mobile or landline) fields, same shape as the indexed /contacts/discover response.
email_pattern	String|null	Template, e.g. first.last@, flastname@
email_pattern_confidence	Number|null	0-1
email_pattern_guess	String|null	Example email for a hypothetical John Smith

Example

curl -X POST https://api.discolike.com/v1/contacts/discover/generate \
  -H "x-discolike-key: API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "icp_text": "VPs or Directors of Marketing at B2B SaaS",
    "domains": ["gusto.com", "rippling.com"]
  }'

Poll for results:

curl https://api.discolike.com/v1/discogen/status/TASK_ID \
  -H "x-discolike-key: API_KEY"

Count Contacts

Endpoint

GET https://api.discolike.com/v1/contacts/count

Accepts the same filter parameters as the Discover Contacts endpoint (persona filters, contact data filters, and company filters). Useful for sizing a result set before paying to retrieve it.

Example Request

curl "https://api.discolike.com/v1/contacts/count?seniority=vp&filter_industry=SAAS&filter_country=US" \
  -H "x-discolike-key: API_KEY"

Example Response

{
  "count": 15432
}

Lookup Contact

Endpoint

GET https://api.discolike.com/v1/contacts/lookup

Parameters

Parameter	Description
persona_id	The persona ID to look up (provide this OR linkedin).
linkedin	LinkedIn URL or username to look up (provide this OR persona_id).

Example Request

curl "https://api.discolike.com/v1/contacts/lookup?persona_id=12345678" \
  -H "x-discolike-key: API_KEY"

Or lookup by LinkedIn URL/username:

curl "https://api.discolike.com/v1/contacts/lookup?linkedin=https://www.linkedin.com/in/janedoe" \
  -H "x-discolike-key: API_KEY"

Example Response

{
  "persona_id": 12345678,
  "name": "Jane Doe",
  "title": "VP of Sales",
  "domain": "example.com",
  "company_name": "Example Corp",
  "summary": "Experienced sales leader with 15+ years in enterprise software..."
}

Legacy: Search Contacts (GET)

Legacy endpoint

GET /v1/contacts predates the contacts API restructure. It still works, but it is hidden from the OpenAPI schema and new integrations should use POST /v1/contacts/discover above. The legacy endpoint returns a flat list of contacts rather than the domain-grouped shape from /contacts/discover.

Endpoint

GET https://api.discolike.com/v1/contacts

Same filter vocabulary as POST /v1/contacts/discover, passed as query parameters instead of a JSON body. For repeated values (e.g., multiple domains, seniority levels), repeat the query parameter: ?domain=a.com&domain=b.com&seniority=vp&seniority=director. For result limits, pass either max_companies or max_records, not both.

Example Request

curl "https://api.discolike.com/v1/contacts?icp_text=VP%20of%20Sales%20at%20SaaS%20companies&seniority=vp&filter_industry=SAAS&max_companies=50&results_by_company=5" \
  -H "x-discolike-key: API_KEY"

Example Response

[
  {
    "persona_id": 319675651,
    "domain": "stripe.com",
    "name": "Marissa Fagnani",
    "title": "Delivery Manager",
    "department": "Technology",
    "seniority": "manager",
    "skills": ["program management", "delivery"],
    "phone": [
      {"phone": "+17406072462", "type": "mobile"},
      {"phone": "+14197337789", "type": "mobile"}
    ],
    "email": "marissa@stripe.com",
    "email_validated": true,
    "social_urls": ["https://www.linkedin.com/in/marissa-fagnani"],
    "connections": 500,
    "country": "US",
    "state": "OR",
    "industry": ["SAAS", "SOFTWARE"],
    "employees": "10001+",
    "revenue_range": ">1B",
    "similarity": 87
  }
]