ZoomInfo

ZoomInfo provides a comprehensive suite of B2B data APIs that deliver company, contact, and intent information to power sales, marketing, and recruiting workflows. The platform aggregates millions of firmographic and technographic records, enabling users to enrich CRM data, build lead lists, and automate outreach. With robust search, enrichment, and intent signals, ZoomInfo helps businesses accelerate revenue generation and improve data quality across the customer lifecycle.

ZoomInfo publishes 8 API contracts indexed on the APIs.io network, including Agent API, Copilot API, Data API, and 5 more. Tagged areas include Company, B2B, Data, and Sales.

The ZoomInfo catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

ZoomInfo’s developer surface includes CLI, authentication, documentation, API reference, getting-started guide, pricing, sandbox, and 22 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

54.3/100 strong ▬ flat Agent 42/100 agent ready Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

AccessFreeSelf serve⚡ Free to try

8 published contracts 1 MCP Servers 4 Agent Skills

Company B2B Data Sales

What this lets a business do 3

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Data & Reference Information Services

AE-230

Account SummarySearch

POST /data/v1/companies/enrich POST /data/v1/contacts/search GET /copilot/v1/companies/lookalikes GET /copilot/v1/companies/{companyId}/account-summary

Information & Data Management

BC-610

Data Quality

POST /data-quality/v1/prepare/normalize/configs POST /data-quality/v1/score/actions/run

Agent Infrastructure & Agentic Commerce

AE-100

Agents

POST /agent/v1/agents/{agentId}/runs

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 54.3/100 · strong

Contract Quality 13.5 / 19

Developer Ergonomics 8.5 / 15

Access Clarity 3.8 / 15

Operational Transparency 4.2 / 10

Contract Governance 2.0 / 9

Discoverability 6.1 / 8

Regulatory Posture 3.1 / 15

Create-or-Update Ergonomics 3.3 / 10

Agent readiness — 42/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 4 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 8 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 6 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 0 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented) Ask about this →
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document Ask about this →
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks Ask about this →
Documented Reversibility +6 pts — a reversal operation in the contract, graded up when a window is documented too Ask about this →
Pagination +5 pts — share of collection GETs (an array, or one wrapped in data/items/results ...) that declare a page/limit/offset/cursor parameter, a Link header or a next/cursor field; na with no collection GETs Ask about this →
Protected Resource Metadata +5 pts — a served /.well-known/oauth-protected-resource carrying `resource` (documented), and naming its authorization_servers (verified) Ask about this →

3 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Access Clarity scores 25.5 — up to +14.9 composite points Ask about this →
Contract Governance scores 22.0 — up to +9.4 composite points Ask about this →
Developer Ergonomics scores 56.5 — up to +8.7 composite points Ask about this →

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Not sure how this applies to your stack? Ask about any one item. Kin Lane reads every question, looks at your profile and your situation, and replies with what a fix would take — scoped to that one area, priced up front, yours whether you ship it or not. Ask a question →

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/gtm/apis.yml: open an issue on github.com/api-evangelist/gtm to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Standards implemented 4

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

Agent2Agent

measured — observed by APIs.io (flavored)

Model Context Protocol (MCP)

measured — observed by APIs.io (documented)

OpenAPI

measured — observed by APIs.io (published)

OAuth 2.0

measured — observed by APIs.io (declared)

APIs 8

Individual APIs this provider publishes, each with its own machine-readable definition.

Agent API

Agent API V1

Copilot API

Copilot API V1

Data API

Data API V1

Data Quality API

Data Quality API V1

Studio API

GTM Studio API V1

Marketing API

Marketing API V1

Platform API

Platform API V1

Vertical Datasets API

Vertical Datasets API V1

Scroll for all 8

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

ZoomInfo MCP Server

Remote MCP server at docs.gtm.ai.

Builder per-second: 5 req/s
Standard per-second: 25 req/s
Scaling per-second: 35 req/s

All 9 limits →

Pricing Plans 1

Published pricing tiers and plan structures.

ZoomInfo Plans Pricing

1 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

ZoomInfo Rate Limits

9 limits

RATE LIMITS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Gtm Context

120 classes · 155 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

ZoomInfo API Rules

19 rules · 16 error-severity 1 warn-severity 2 info-severity

SPECTRAL

1 properties

JSON SCHEMA

Scroll for all 48

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

ZoomInfo Authentication

oauth2 · 1 scheme

SECURITY

ZoomInfo Domain Security

TLSv1.3 · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

ZoomInfo Scopes

28 scopes · authorizationCode

28 scopes

SCOPES

Agentic Access (API Evangelist recommendations) 1

Recommended x-agentic-access execution contracts for AI agents.

ZoomInfo Agentic Access

120 operations · 63 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Sandbox

Sandbox

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgentSkill

LLMsTxt

MCPServer

WellKnown

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

Conventions

ErrorCatalog

Conformance

Scroll for all 7

Build 1

SDKs, sample code, and the tooling you integrate with

CLI

CLI

Access & Security 3

Authentication, authorization, and security posture

OAuthScopes

OAuthScopes

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

RateLimits

RateLimits

ChangeLog

ChangeLog

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

Pricing

Pricing

Company 1

The organization behind the API

Website

Website

Other 4

Properties that don't map to a standard resource type

CapabilityMap

AgentCard

Hosts

Vendors

Source (apis.yml)

aid: gtm
name: ZoomInfo
accessModel:
  pricing: free
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Free · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  - rate-limits
  - security
  generated: '2026-11-13'
  method: derived
image: https://gtm.ai/opengraph-image
description: ZoomInfo provides a comprehensive suite of B2B data APIs that deliver company, contact, and intent information
  to power sales, marketing, and recruiting workflows. The platform aggregates millions of firmographic and technographic
  records, enabling users to enrich CRM data, build lead lists, and automate outreach. With robust search, enrichment, and
  intent signals, ZoomInfo helps businesses accelerate revenue generation and improve data quality across the customer lifecycle.
url: https://raw.githubusercontent.com/api-evangelist/gtm/refs/heads/main/apis.yml
x-type: company
x-source: harvest:g2-catalog
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-20 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-20'
modified: '2026-10-20'
tags:
- Company
- B2B
- Data
- Sales
tags_raw:
- Company
- B2B
- Data
- API
- Sales
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: CapabilityMap
  url: capabilities/gtm-capability-edges.yml
  name: ZoomInfo Business Capability Map
- type: AgenticAccess
  url: agentic-access/gtm-agentic-access.yml
- type: RateLimits
  url: rate-limits/gtm-rate-limits.yml
- type: Plans
  url: plans/gtm-plans-pricing.yml
- type: Spectral
  url: rules/gtm-rules.yml
- type: JSONLD
  url: json-ld/gtm-context.jsonld
- type: Vocabulary
  url: vocabulary/gtm-vocabulary.yml
- type: AgentSkill
  url: skills/_index.yml
- type: DataModel
  url: data-model/gtm-data-model.yml
- type: CLI
  url: cli/gtm-cli.yml
- type: Conventions
  url: conventions/gtm-conventions.yml
- type: ErrorCatalog
  url: errors/gtm-problem-types.yml
- type: Conformance
  url: conformance/gtm-conformance.yml
- type: LLMsTxt
  url: llms/gtm-llms.txt
- type: AgentCard
  url: a2a/gtm-a2a.yml
- type: MCPServer
  url: mcp/gtm-mcp.yml
- type: WellKnown
  url: well-known/gtm-well-known.yml
- type: Hosts
  url: hosts/gtm-hosts.yml
- type: Vendors
  url: vendors/gtm-vendors.yml
- type: OAuthScopes
  url: scopes/gtm-scopes.yml
- type: Authentication
  url: authentication/gtm-authentication.yml
- type: DomainSecurity
  url: security/gtm-domain-security.yml
- type: Website
  url: https://gtm.ai/
- type: Documentation
  url: https://gtm.ai/docs
- type: APIReference
  url: https://docs.gtm.ai/reference
- type: GettingStarted
  url: https://gtm.ai/docs/mcp/getting-started
- type: Pricing
  url: https://gtm.ai/pricing
- type: Sandbox
  url: https://gtm.ai/playground
- type: ChangeLog
  url: https://gtm.ai/releases
apis:
- name: Agent API
  description: Agent API V1
  humanURL: https://docs.gtm.ai/reference/agent
  baseURL: https://api.gtm.ai/agent
  properties:
  - type: OpenAPI
    url: openapi/gtm-agent-api-v1-api-openapi.yml
  - type: JSONSchema
    url: json-schema/gtm-agent-stream-event-schema.json
  - type: JSONSchema
    url: json-schema/gtm-pulses-list-response-schema.json
  - type: JSONSchema
    url: json-schema/gtm-agents-list-response-schema.json
  - type: JSONSchema
    url: json-schema/gtm-agent-runs-list-response-schema.json
  - type: JSONSchema
    url: json-schema/gtm-start-agent-run-request-body-schema.json
  - type: JSONSchema
    url: json-schema/gtm-agent-detail-response-schema.json
  aid: gtm:agent-api
- name: Copilot API
  description: Copilot API V1
  humanURL: https://docs.gtm.ai/reference/copilot
  baseURL: https://api.gtm.ai/copilot
  properties:
  - type: OpenAPI
    url: openapi/gtm-copilot-api-v1-api-openapi.yml
  - type: JSONSchema
    url: json-schema/gtm-customer-buyer-persona-upsert-schema.json
  - type: JSONSchema
    url: json-schema/gtm-ideal-company-segment-upsert-schema.json
  - type: JSONSchema
    url: json-schema/gtm-organization-offering-upsert-schema.json
  - type: JSONSchema
    url: json-schema/gtm-customer-competitor-upsert-schema.json
  - type: JSONSchema
    url: json-schema/gtm-company-insights-by-type-response-schema.json
  - type: JSONSchema
    url: json-schema/gtm-account-summary-question-request-schema.json
  aid: gtm:copilot-api
- name: Data API
  description: Data API V1
  humanURL: https://docs.gtm.ai/reference/data
  baseURL: https://api.gtm.ai/data
  properties:
  - type: OpenAPI
    url: openapi/gtm-data-api-v1-api-openapi.yml
  - type: JSONSchema
    url: json-schema/gtm-intent-enrich-response-schema.json
  - type: JSONSchema
    url: json-schema/gtm-scoop-enrich-response-schema.json
  - type: JSONSchema
    url: json-schema/gtm-news-enrich-response-schema.json
  - type: JSONSchema
    url: json-schema/gtm-org-chart-enrich-response-schema.json
  - type: JSONSchema
    url: json-schema/gtm-company-search-response-schema.json
  - type: JSONSchema
    url: json-schema/gtm-intent-search-response-schema.json
  aid: gtm:data-api
- name: Data Quality API
  description: Data Quality API V1
  humanURL: https://docs.gtm.ai/reference/data-quality
  baseURL: https://api.gtm.ai/data-quality
  properties:
  - type: OpenAPI
    url: openapi/gtm-data-quality-api-v1-api-openapi.yml
  - type: JSONSchema
    url: json-schema/gtm-data-quality-response-schema.json
  - type: JSONSchema
    url: json-schema/gtm-data-quality-request-schema.json
  - type: JSONSchema
    url: json-schema/gtm-normalize-config-list-json-api-model-schema.json
  - type: JSONSchema
    url: json-schema/gtm-segment-config-list-json-api-model-schema.json
  - type: JSONSchema
    url: json-schema/gtm-score-config-list-json-api-model-schema.json
  - type: JSONSchema
    url: json-schema/gtm-normalize-config-json-api-model-create-schema.json
  aid: gtm:data-quality-api
- name: Studio API
  description: GTM Studio API V1
  humanURL: https://docs.gtm.ai/reference/studio
  baseURL: https://api.gtm.ai/studio
  properties:
  - type: OpenAPI
    url: openapi/gtm-studio-api-v1-api-openapi.yml
  - type: JSONSchema
    url: json-schema/gtm-audiences-json-api-list-schema.json
  - type: JSONSchema
    url: json-schema/gtm-folder-json-api-list-schema.json
  - type: JSONSchema
    url: json-schema/gtm-get-rows-json-api-model-schema.json
  - type: JSONSchema
    url: json-schema/gtm-upsert-rows-json-api-model-schema.json
  - type: JSONSchema
    url: json-schema/gtm-row-upsert-list-api-model-schema.json
  - type: JSONSchema
    url: json-schema/gtm-bulk-row-upsert-list-api-model-schema.json
  aid: gtm:studio-api
- name: Marketing API
  description: Marketing API V1
  humanURL: https://docs.gtm.ai/reference/marketing
  baseURL: https://api.gtm.ai/marketing
  properties:
  - type: OpenAPI
    url: openapi/gtm-marketing-api-v1-api-openapi.yml
  - type: JSONSchema
    url: json-schema/gtm-get-audiences-response-schema.json
  - type: JSONSchema
    url: json-schema/gtm-audience-upload-model-create-schema.json
  - type: JSONSchema
    url: json-schema/gtm-audience-upload-model-schema.json
  - type: JSONSchema
    url: json-schema/gtm-audience-model-create-schema.json
  - type: JSONSchema
    url: json-schema/gtm-audience-model-update-schema.json
  - type: JSONSchema
    url: json-schema/gtm-audience-model-schema.json
  aid: gtm:marketing-api
- name: Platform API
  description: Platform API V1
  humanURL: https://docs.gtm.ai/reference/platform
  baseURL: https://api.gtm.ai/platform
  properties:
  - type: OpenAPI
    url: openapi/gtm-platform-api-v1-api-openapi.yml
  - type: JSONSchema
    url: json-schema/gtm-exports-list-response-schema.json
  - type: JSONSchema
    url: json-schema/gtm-content-interaction-upsert-response-schema.json
  - type: JSONSchema
    url: json-schema/gtm-content-interaction-upsert-request-schema.json
  - type: JSONSchema
    url: json-schema/gtm-content-interaction-response-schema.json
  - type: JSONSchema
    url: json-schema/gtm-execute-export-request-body-schema.json
  - type: JSONSchema
    url: json-schema/gtm-execution-response-schema.json
  aid: gtm:platform-api
- name: Vertical Datasets API
  description: Vertical Datasets API V1
  humanURL: https://docs.gtm.ai/reference/vertical-datasets
  baseURL: https://api.gtm.ai/vertical-datasets
  properties:
  - type: OpenAPI
    url: openapi/gtm-vertical-datasets-api-v1-api-openapi.yml
  - type: JSONSchema
    url: json-schema/gtm-managed-service-provider-search-response-schema.json
  - type: JSONSchema
    url: json-schema/gtm-financial-filing-search-response-schema.json
  - type: JSONSchema
    url: json-schema/gtm-loan-statement-search-response-schema.json
  - type: JSONSchema
    url: json-schema/gtm-product-review-search-response-schema.json
  - type: JSONSchema
    url: json-schema/gtm-earnings-call-search-response-schema.json
  - type: JSONSchema
    url: json-schema/gtm-job-post-search-response-schema.json
  aid: gtm:vertical-datasets-api
x-enrichment:
  date: '2026-10-20'
  status: enriched
  artifacts_added: 49
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

ZoomInfo API — frequently asked questions

Does ZoomInfo have an API?

Yes. APIs.io lists 8 APIs from ZoomInfo, including Agent API, Copilot API and Data API, and 5 more.

Is there an OpenAPI specification for the ZoomInfo API?

Yes. APIs.io indexes 8 OpenAPI specifications for ZoomInfo, each linked for download from this page.

How do I authenticate with the ZoomInfo API?

ZoomInfo documents its authentication (oauth2 · 1 scheme). The details are profiled on APIs.io as ZoomInfo Authentication.

How much does the ZoomInfo API cost?

ZoomInfo publishes its prices; its Free plan is $0 as of 2026-10-20. APIs.io lists 1 pricing plan for ZoomInfo, with each plan's price, limits and inclusions under Pricing on this page.

Does ZoomInfo have an MCP server?

Yes. APIs.io lists 1 MCP server for ZoomInfo: Remote MCP server at docs.gtm.ai.

Is the ZoomInfo API ready for AI agents?

ZoomInfo has a Kin Score of 54.3 out of 100 (strong) and an Agent Readiness score of 41.5 (agent-ready), scored by API Evangelist on 2026-11-13.

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get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
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