What matching methods are supported?

The Enrichment API supports multiple matching methods including email, phone, LinkedIn, social profiles, and name-based lookups. The API automatically selects the best matching strategy based on the parameters you provide.

How do confidence scores work?

Every match includes a confidence level of high, moderate, or low. Confidence reflects how certain we are that we found the right person, based on the parameters matched and the quality of the match. You can filter results by minimum confidence threshold.

What happens when there is no match?

If no match is found, the API returns HTTP 404. Try providing additional identifying information for better results.

Can I match on hashed emails?

Yes, you can match on hashed emails for privacy-preserving enrichment where you never need to send plaintext email addresses.

What are the rate limits?

The Enrichment API has a default rate limit of 100 requests per minute per API key. Higher limits are available for enterprise customers. Each request enriches one record. For bulk enrichment needs, consider our data licensing option.

Beta

Person Enrichment API

Match your records to 184M+ profiles and append 60+ data points.9 matching methods with confidence scores.

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Example

Simple Request, Rich Response

Request

POST /person/enrich
Content-Type: application/json
API-Key: YOUR_API_KEY

{
  "email": "sarah.chen@techcorp.com",
  "min_confidence": "high"
}

Response

{
  "matches": [
    {
      "person": {
        "legion_id": "fdd85569-f0f0-53a9-bc60-089507193c28",
        "full_name": "sarah chen",
        "job_title": "senior product manager",
        "company_name": "techcorp inc",
        "company_size": "1001-5000",
        "seniority_level": "senior",
        "linkedin_url": "https://www.linkedin.com/in/sarahchen",
        "city": "san francisco",
        "state": "california",
        "country": "united states",
        "emails": [...],
        "phones": [...],
        "experience": [...],
        "education": [...]
      },
      "match_metadata": {
        "matched_on": ["email"],
        "match_type": "exact",
        "match_confidence": "high"
      }
    }
  ],
  "total": 1
}

Matching

9 Matching Methods

Match on identifiers, names, locations, and professional context. The API automatically selects the best strategy.

Email

Match by email address

Phone

Match by phone number

Name + Company/School/Title

Match by name and professional context

Name + Location

Match by name and location

Name + Birth Date

Match by name and date of birth

Email Hash

Privacy-preserving hashed email matching

LinkedIn ID

Match by LinkedIn profile ID

Social URL

Match by social profile URL

Legion ID

Direct lookup by unique identifier

Features

Flexible Enrichment Options

Configure the API to match your specific enrichment workflow and quality requirements.

9 Matching Methods

Match on identifiers, names, locations, companies, and more. The API selects the best strategy automatically.

Confidence Scores

Every match includes a confidence level (high, moderate, or low) so you can filter by match quality.

Hash Matching

Match on hashed emails for privacy-preserving enrichment without sending plaintext.

Input Normalization

Inputs are automatically normalized so you can send data as-is without cleaning first.

Use Cases

Built for Data Teams

The Enrichment API is designed for teams that need to enhance their existing data.

CRM Enrichment

Enrich CRM contacts with professional data for better sales outreach.

Fill missing contact details
Add employment history
Append company data

Lead Scoring

Append data points to leads for better scoring and prioritization.

Score by seniority level
Filter by company size
Prioritize by recency

Data Hygiene

Clean and complete your existing contact database with verified data.

Standardize job titles
Verify company names
Fill missing fields

Identity Resolution

Match records across multiple systems to create unified person profiles.

Match across systems
Deduplicate records
Build golden records

Access Methods

Enrichment API vs Other Options

Choose the access method that fits your use case. Same data, different delivery.

Enrichment API Beta

Match and append data to your records

9 matching methods
Confidence scores
Hash matching
100 requests per minute

Search API Beta

Query profiles on demand via API

Flexible SQL queries
Up to 100 results
No infrastructure needed

Learn more

Discovery API Beta

Natural language people search

Natural language queries
AI-powered matching
No query syntax required

Learn more

Data License

Bulk file delivery for full dataset access

Full dataset access
Monthly refreshes
Your infrastructure

Learn more

FAQ

Common Questions

What users of our Enrichment API ask us most

Get Started

Start enriching your records against 184M+ profiles with 60+ data points each.

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{ "matches": [ { "person": { "legion_id": "fdd85569-f0f0-53a9-bc60-089507193c28", "full_name": "sarah chen", "job_title": "senior product manager", "company_name": "techcorp inc", "company_size": "1001-5000", "seniority_level": "senior", "linkedin_url": "https://www.linkedin.com/in/sarahchen", "city": "san francisco", "state": "california", "country": "united states", "emails": [...], "phones": [...], "experience": [...], "education": [...] }, "match_metadata": { "matched_on": ["email"], "match_type": "exact", "match_confidence": "high" } } ], "total": 1 }