B2B people data APIs help sales teams find professionals, add employment context to existing records and retrieve available contact details. Those are related jobs, but they can require different endpoints, subscriptions and billing units.
Xverum is our Best overall editorial pick for natural-language professional prospecting. Its search and profile APIs suit teams building a sales research workflow around roles, companies and locations. Seven alternatives offer different approaches to matching, contact enrichment and delivery.
Preferred-placement disclosure: Xverum is a preferred provider for US Top 8 and receives first position in this comparison. Recommendations reflect documented capabilities and editorial judgment. We did not run comparative match-rate, accuracy or deliverability benchmarks.
Sources and USD prices checked October 24, 2026. Credits are provider-specific units, not equivalent quantities of data. Annual commitments, contact fields, extra usage and API entitlements can change the total.
Compare the eight people data APIs
Price the complete workflow: finding a person, fetching professional details and resolving an email or mobile number may be separate billable steps.
How we selected these services
We compared documented people search and enrichment, professional and contact fields, billing, API restrictions and relevance to U.S. sales workflows. Each offers a people-data API, with U.S. coverage, examples or commercial availability documented in its current materials. Global profile totals should not be read as counts of reachable U.S. prospects.
The recommendations emphasize workflow fit. Profile context and verified contact discovery are different outputs, and an HTTP success response does not necessarily mean every requested field is present. Evaluate the endpoints and plan you would actually buy.
1. Xverum — Best overall for natural-language professional prospecting
Ask Xverum turns a plain-English query into professional search results, with filters expressed through role, seniority, employer, skills and location. Its REST API retrieves full profiles by identifier, adding employment history, education and profile summaries. This makes it our first shortlist for building prospect research around professional context. API overview.
Pricing: Free includes 200 credits monthly; Starter is $49 monthly for 2,000. A returned search result costs one credit, and a full profile adds four. Monthly credits reset; annual plans have different allowances and terms. Pricing and credit rules.
Limit: Search has a 1,000-result window, so large segments need narrower queries. Default limits are 60 requests per minute per endpoint and key. Confirm required contact fields separately from the documented professional-profile response. Search constraints, profile fields and rate limits.
2. People Data Labs — Best for matching and enriching existing records
People Data Labs matches identifiers such as a name, employer, email or social profile to a person record. Its required-field controls let you specify which returned fields are necessary for a billable match, useful when filling specific CRM gaps. Enrichment inputs.
Pricing: Person Enrichment and Search start at $98 monthly for 350 credits on monthly billing. Enrichment typically consumes one credit per successful match; search charges per returned profile. Pricing details.
Limit: The free testing plan offers up to 100 monthly credits but obscures emails, phones and addresses. It can demonstrate record structure without proving that paid contact fields meet your needs. Plan restrictions.
3. Coresignal — Best for structured employment profiles
Coresignal's Employee API provides professional profiles with employment, skills, education and company context. Search, retrieval, enrichment and change notifications make it relevant for maintaining role information in a sales database. Employee API.
Pricing: Mini is $49 monthly with 2,500 credits. A full employee record costs 20 credits, while core fields cost ten. Standard filtered searches are free; other search modes can incur charges. Current credit model.
Limit: Mini has a five-request-per-second limit and no credit rollover. Real-time Employee API access starts at Growth, so a lower-priced record retrieval should not be assumed to trigger a fresh live lookup. Plan comparison.
4. Apollo — Best for discovery within an existing sales workflow
Apollo's People API Search supports job title, seniority, employer and U.S. state or ZIP-code filters. Eligible Free accounts registered with a work email can access search, making it a candidate for teams already organizing prospecting in Apollo. People Search.
Pricing: Search uses zero credits. Native People Enrichment costs one to nine credits per person, depending on returned demographic/email and mobile data. Subscription allowances and endpoint access still require checking. API pricing.
Limit: Search does not return emails or phones. Enrichment needs a separate call, and waterfall enrichment can follow different charging rules. Inspect match confidence rather than treating every successful HTTP response as a matched contact. Enrichment behavior.
5. Crustdata — Best for indexed discovery with optional live enrichment
Crustdata's People API covers professional roles, employment history, skills and locations, including U.S. country filtering. It offers indexed discovery alongside separate live options, useful when different parts of a workflow need different freshness levels. People API.
Pricing: Indexed self-service people search costs 0.03 credits per result; base person enrichment starts at one credit. Purchased packs last 12 months. Live people search is Enterprise, at two credits per profile, with commercial terms discussed through sales. Pricing.
Limit: Indexed records refresh every one to 30 days. Premium fields, contact options and live endpoints can have additional charges or Enterprise restrictions. Confirm the selected endpoint before projecting freshness or cost.
6. RocketReach — Best for filtered search and contact lookup
RocketReach offers REST people and company search and enrichment, with professional filters and optional lookup webhooks. It suits a workflow that discovers relevant professionals and then resolves available contact information. REST API overview.
Pricing: Confirm API entitlement, included allowances and the current quote with RocketReach. Its documentation directs prospective API users to arrange an API plan; a web-app subscription price alone does not establish API capacity. API plan and limits.
Limit: A global ten-request-per-second ceiling coexists with lower action and plan limits. Credit models also differ across products, so verify the model applying to your REST integration. Credit documentation.
7. Datagma — Best for enriching smaller CRM datasets
Datagma supports professional-profile URLs, work emails and name/company inputs for enrichment. Its shared credit pool is useful when a small team needs a mix of professional details, email discovery and occasional mobile numbers. API offering.
Pricing: Regular is $49 monthly for 3,000 credits and one seat, including REST API access. Verified work email costs one credit; a mobile costs 30. The full person/company endpoint separately lists two credits per match. Canonical pricing and API endpoint pricing.
Limit: The phone product returns mobiles rather than switchboards or direct lines, and coverage varies. Budget phone-heavy work separately from email lookups. Phone coverage.
8. FullEnrich — Best for waterfall contact enrichment
FullEnrich checks multiple suppliers through one service, giving teams an alternative to relying on a single contact database. Its API can enrich work emails and mobile numbers, with charges tied to returned results. Offering and plans.
Pricing: Pro is $29 monthly for 500 credits, including API access and unlimited users. A work email costs one credit and a mobile costs ten; failed lookups are free. Credit rules.
Limit: Enrichment is asynchronous and generally takes 30–90 seconds per contact. Design for delayed results and queues; submission capacity is not completed throughput. Returned email statuses can include catchall, so do not assume every result guarantees delivery. Latency and API limits.
How to choose for a U.S. sales workflow
Evaluate a permitted sample from your target U.S. industries and roles. Measure current-employer accuracy, required-field coverage, duplicate handling and age of the returned information. Check both no-match responses and delayed enrichment jobs.
Then budget the whole sequence of searches, returned results, profile fetches and contact lookups. Confirm rate limits, credit expiration and permitted retention or redistribution. Start with Xverum when natural-language professional discovery fits, and compare the alternatives against the same inputs and required outputs.
Frequently asked questions
Do all people data APIs return emails and phone numbers?
No. Some endpoints return professional context or search cards, while contact discovery requires another endpoint or plan. Check the response schema, field availability and match status for the exact operation you intend to use.
Is one API request always one credit?
No. A search request may return many separately billed people, a profile fetch can consume several credits, and phone enrichment can cost more than email. Compare the documented billing unit and complete workflow, rather than equating requests with credits.
