Best company data APIs for enrichment, search, and AI agents
Compare company data APIs by fields, successful-match billing, rate limits, bulk behavior, licensing, public pricing, and MCP or agent access.
Reviewed and updated August 20, 2026 by Argorant
Which API returns the required company fields, identifiers, and update behavior at a predictable cost per successful usable match?
Choose People Data Labs for direct successful-match company enrichment, Coresignal for multi-source company, employee, and jobs data, Dealroom or Crunchbase for private-market intelligence, 6sense for enterprise account identification, and Argorant when company search must lead to verified buyer contacts.
Name the thing you need back, and the shortlist gets short.
Coverage, verification and price only become comparable once the output is fixed. A file, a field and an endpoint are three different purchases.
How the shortlist was judged.
API, MCP, and CLI rights determine whether a workflow can run reliably without rep clicks.
Practical test: Confirm plan eligibility, rate limits, authentication, credit behavior, and export permissions in writing.
Nominal records are irrelevant if the target field is missing, stale, or undeliverable.
Practical test: Run the same 100-record sample and separate deliverable, catch-all, unknown, invalid, and no-result outcomes.
Seats, credits, lookups, actions, and exports measure different things.
Practical test: Price the exact steps required to produce 1,000 campaign-ready records, including verification and add-ons.
Suppression, permissions, audit logs, overwrite rules, and spending limits prevent operational damage.
Practical test: Test opt-out handling, role permissions, credit caps, data overwrite behavior, and auditability before launch.
A global headline does not prove strong coverage in the buyer's countries, company sizes, or titles.
Practical test: Compare live counts and usable-field rates for the same ICP in each priority country.
The shortlist.
Person Pro starts at $98 monthly or $78.40 per month on an annual commitment. Company Pro starts at $100 monthly or $80 annually. Enterprise is custom.
Successful-match billing does not guarantee that every desired field is populated.
Mini is $49 monthly. Starter is $199 monthly or $2,149 annually, equal to $179.08 per month. Higher self-serve tiers run to $5,000 monthly.
Endpoint credit costs differ substantially and require request-level modeling.
Pro is displayed at $49 per user per month billed annually. An official help page also documents a flexible $99 monthly option. Business and API prices are not public.
The production API is separate from Pro and price is not public.
Premium is €12,600 per year, equal to €1,050 per month, and starts at three seats. The USD page shows $14,500 per year. Higher API and enterprise packages are custom.
It is not a general all-business census or verified contact-email API.
An eligible paid HubSpot subscription is required. Smart CRM displays Professional at $45 per month and Enterprise at $75 per month, but total cost depends on the purchased Hub and seats.
The workflow is platform-specific and total cost depends on the HubSpot subscription.
Basic is $65 monthly or $49 per seat per month billed annually. Professional is $99 monthly or $79 annually. Organization is $119 per seat per month billed annually with a three-seat minimum.
Some endpoints consume credits and exact API economics depend on the workspace plan.
Public dollar pricing is unavailable. Product packages, predictive access, and API credits are contract-specific.
Packages and API credits are contract-specific and public prices are unavailable.
Starter is $99 monthly or $74 per month billed annually for 4,500 contacts. The agent wallet is $0.035 per credit with no subscription.
Confirm company-only endpoint fields before positioning it as a pure firmographic master-data API.
Side by side.
Published database sizes, accuracy claims and prices use different units, so every vendor statement below stays attributed. The buying test should still be your own sample and your own required fields.
| Provider | Best for | Coverage | Data type | Verification | Integrations | Agent access | Pricing shape | Decisive limitation |
|---|---|---|---|---|---|---|---|---|
| People Data Labs | Products embedding structured person and company search or enrichment. | Global person, company, IP, job, and identity data delivered primarily through APIs and bulk products. | Person and company profiles, enrichment, search, identity resolution, and bulk datasets. | A credit is charged for a successful API profile or match. That success signal is not the same as work-email deliverability. | REST and bulk APIs, flat files, and enterprise data licenses. | API-first access is public. No hosted MCP server was confirmed. | Person Pro starts at $98 monthly or $78.40 per month on an annual commitment. Company Pro starts at $100 monthly or $80 annually. Enterprise is custom. | Successful-match billing does not guarantee that every desired field is populated. |
| Coresignal | Applications needing company, employee, job, post, and historical headcount data. | Multi-source professional, company, job, and employee data collected from more than 15 public web sources. | Company, employee, job, post, and historical headcount APIs. | Billing is tied to successful API responses, not email deliverability. Contact enrichment is a separate endpoint. | REST APIs, Elasticsearch-style search, webhooks, bulk data, and data feeds. | Agentic Search API is listed across plans. No hosted MCP server was confirmed on the public pricing documentation. | Mini is $49 monthly. Starter is $199 monthly or $2,149 annually, equal to $179.08 per month. Higher self-serve tiers run to $5,000 monthly. | Endpoint credit costs differ substantially and require request-level modeling. |
| Crunchbase | Products and analysts centered on private-company and funding intelligence. | Private-company, funding, acquisition, investor, and growth intelligence with contact features on paid plans. | Company profiles, private-market events, funding data, predictions, contacts, and saved searches. | The product emphasizes company intelligence. Contact verification should be tested separately from private-market coverage. | CSV and CRM workflow on Pro or Business; production API is a separate enterprise purchase. | No public hosted MCP server was confirmed. API access is separate from the self-serve Pro subscription. | Pro is displayed at $49 per user per month billed annually. An official help page also documents a flexible $99 monthly option. Business and API prices are not public. | The production API is separate from Pro and price is not public. |
| Dealroom | Venture, ecosystem, investor, and private-market applications that also need hosted MCP. | Startup, scaleup, investor, funding, ecosystem, and private-market data across global innovation markets. | Companies, funds, investors, founders, funding rounds, valuations, taxonomies, and market maps. | Designed for private-market research rather than verified outbound email delivery. | REST API, exports, hosted data products, dashboards, and analyst support on higher packages. | A hosted read-only MCP server is included on Premium Plus, Enterprise, and API plans. | Premium is €12,600 per year, equal to €1,050 per month, and starts at three seats. The USD page shows $14,500 per year. Higher API and enterprise packages are custom. | It is not a general all-business census or verified contact-email API. |
| HubSpot data enrichment | Applications enriching records already governed inside HubSpot CRM. | Contact and company enrichment inside eligible HubSpot subscriptions, using HubSpot's commercial dataset, third-party providers, and public information. | CRM contact and company fields, automatic enrichment, continuous refresh, and configurable overwrite rules. | HubSpot says it verifies business information across multiple sources. Contacts require a business email and companies require a domain. | Native HubSpot CRM objects, workflows, imports, forms, and HubSpot APIs. | HubSpot agents and smart properties can use HubSpot Credits. No standalone enrichment MCP claim was confirmed. | An eligible paid HubSpot subscription is required. Smart CRM displays Professional at $45 per month and Enterprise at $75 per month, but total cost depends on the purchased Hub and seats. | The workflow is platform-specific and total cost depends on the HubSpot subscription. |
| Apollo | Revenue products that need company and person enrichment beside prospecting data. | Large global company and contact database combined with sequencing, enrichment, and rep workflows. | Company records, work emails, phones, intent and engagement fields, enrichment, and outbound workflow data. | Apollo says email credits are charged only when it can verify an email, while other data and workflow actions follow their own credit rules. | CRM integrations, browser extension, CSV, workflows, and public API. | Public API and MCP access use the signed-in workspace's normal permissions and credits. | Basic is $65 monthly or $49 per seat per month billed annually. Professional is $99 monthly or $79 annually. Organization is $119 per seat per month billed annually with a three-seat minimum. | Some endpoints consume credits and exact API economics depend on the workspace plan. |
| 6sense | Enterprise account-identification, scoring, and enrichment workflows. | Account identification, intent, predictive scoring, sales intelligence, and enrichment for enterprise revenue teams. | Company identification, firmographics, people enrichment, predictive scores, intent, and account segments. | API billing is based on matched company or enrichment responses. That does not establish email deliverability. | CRM and marketing automation integrations plus company, people, firmographic, and scoring APIs. | No public hosted MCP server was confirmed. API access requires the relevant platform or Sales Intelligence package and credit allocation. | Public dollar pricing is unavailable. Product packages, predictive access, and API credits are contract-specific. | Packages and API credits are contract-specific and public prices are unavailable. |
| Argorant | Applications that start with company search and must return verified decision-maker contacts. | 565.8M B2B contacts across 184 countries, with country, industry, company-size, seniority, department, and title filters. | Company and person records, verified work emails, company phones, and optional direct or mobile numbers. | Live SMTP verification runs at export. Invalid, unverifiable, and no-email outcomes are not charged as contact credits. | CSV exports, REST API, signed webhooks, CRM and sequencer handoffs. | MCP and API on paid plans; UI, API, CLI, and MCP through the no-subscription agent wallet. | Starter is $99 monthly or $74 per month billed annually for 4,500 contacts. The agent wallet is $0.035 per credit with no subscription. | Confirm company-only endpoint fields before positioning it as a pure firmographic master-data API. |
Worked scenario: 10,000 successful company records
- PDL Company monthly Tier 1 is $0.10 per successful profile through 10,000 credits.
- Coresignal Base Company API costs 10 credits per record.
- Coresignal plan selection depends on the total endpoint mix.
PDL gives a direct self-serve company-match cost. Coresignal can be more valuable when the application also needs employee, jobs, posts, historical, or agentic endpoints.
The best API is the one a developer can cost, test, and license before it becomes infrastructure. Require stable identifiers, explicit match behavior, field-level freshness, bulk semantics, and rights that cover the intended product use.
Source evidenceCoresignal pricing documentation showing a seven-day 2,000-credit API trial, endpoint access, rate limits, and credit-based successful requests.Show captureHide capture
8 sources checked and datedShow sources
Frequently asked
No. Crunchbase, UpLead, ZoomInfo, and other vendors separate UI, export, and API rights. Confirm the exact plan and intended use.
The provider charges only when a request returns a profile under its matching rules. It does not mean every requested field is present or independently verified.
MCP matters when approved agents should search or reason over licensed data without custom tool wrappers. Rate, permission, and credit controls still matter as much as the protocol.
Test the exact market
before you commit.
Count and preview the segment, then compare the cost of usable verified output on the same sample.
