Zendesk Sell

Zendesk Sell (formerly Base CRM) is a sales CRM platform that helps sales teams manage leads, contacts, deals, and pipelines while integrating with the broader Zendesk customer experience suite. The platform offers pipeline analytics, email and call tracking, mobile apps, and territory management for high-velocity sales organizations. The Sell API is a RESTful API authenticated via OAuth 2.0 (authorization code, implicit, password, and refresh token grants) at the api.getbase.com host that provides full CRUD access to leads, contacts, deals, accounts, notes, tasks, calls, and custom fields.

Zendesk Sell publishes 3 APIs on the APIs.io network: Contacts API, Deals API, and Leads API. Tagged areas include CRM, Sales, Sales Automation, Leads, and Deals.

Zendesk Sell’s developer surface includes authentication, documentation, API reference, pricing, signup flow, support, and 7 more developer resources.

🌐 Visit website 📡 Source on GitHub

33.9/100 thin ▬ flat Agent 28/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6

AccessApproval

4 APIs

CRMSalesSales AutomationLeadsDealsPipelineCustomer Experience

Kin Score

Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6

Composite quality — 33.9/100 · thin

Contract Quality 15.0 / 25

Developer Ergonomics 6.1 / 20

Commercial Clarity 4.7 / 20

Operational Transparency 0.7 / 13

Governance 0.0 / 12

Discoverability 7.4 / 10

Agent readiness — 28/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/zendesk-sell: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 4

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

GraphQL 1

GraphQL schemas published by this provider.

Scopes 1

OAuth scopes governing access to this provider's APIs.

Zendesk Sell Scopes

2 scopes · authorizationCode

2 scopes

SCOPES

Get Started 2

Portal, sign-up, and the first successful call

Signup

Signup

Login

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 4

Authentication, authorization, and security posture

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Authentication

Authentication

OAuthScopes

OAuthScopes

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 1

Pricing, plans, and the legal terms of use

Pricing

Pricing

Company 1

The organization behind the API

Website

Website

Source (apis.yml)

aid: zendesk-sell
name: Zendesk Sell
description: Zendesk Sell (formerly Base CRM) is a sales CRM platform that helps sales teams manage leads, contacts, deals,
  and pipelines while integrating with the broader Zendesk customer experience suite. The platform offers pipeline analytics,
  email and call tracking, mobile apps, and territory management for high-velocity sales organizations. The Sell API is a
  RESTful API authenticated via OAuth 2.0 (authorization code, implicit, password, and refresh token grants) at the api.getbase.com
  host that provides full CRUD access to leads, contacts, deals, accounts, notes, tasks, calls, and custom fields.
type: Index
accessModel:
  pricing: unknown
  onboarding: approval
  trial: false
  try_now: false
  public: false
  label: Requires approval
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/zendesk-sell.png
tags:
- CRM
- Sales
- Sales Automation
- Leads
- Deals
- Pipeline
- Customer Experience
url: https://raw.githubusercontent.com/api-evangelist/zendesk-sell/refs/heads/main/apis.yml
created: '2026-05-11'
modified: '2026-05-11'
specificationVersion: '0.19'
apis:
- aid: zendesk-sell:sales-crm-api
  name: Zendesk Sell (Sales CRM) API
  description: OAuth 2.0-authenticated REST API for managing leads, contacts, deals, accounts, notes, tasks, calls, sources,
    stages, pipelines, and custom fields in Zendesk Sell. Bearer access tokens are passed in the Authorization header against
    the api.getbase.com host.
  humanURL: https://developer.zendesk.com/api-reference/sales-crm/introduction/
  baseURL: https://api.getbase.com
  tags:
  - CRM
  - Sales
  - Leads
  - Contacts
  - Deals
  - Pipeline
  properties:
  - type: Documentation
    url: https://developer.zendesk.com/api-reference/sales-crm/introduction/
  - type: Authentication
    url: https://developer.zendesk.com/api-reference/sales-crm/authentication/introduction/
  - type: OAuth Reference
    url: https://developer.zendesk.com/api-reference/sales-crm/authentication/reference/
  - url: graphql/zendesk-sell-graphql.md
    type: GraphQL
- aid: zendesk-sell:zendesk-sell-contacts-api
  name: Zendesk Sell Contacts API
  description: Individual people and organizations.
  humanURL: https://developer.zendesk.com/api-reference/sales-crm/introduction/
  baseURL: https://api.getbase.com
  tags:
  - Contacts
  properties:
  - type: OpenAPI
    url: openapi/zendesk-sell-contacts-api-openapi.yml
- aid: zendesk-sell:zendesk-sell-deals-api
  name: Zendesk Sell Deals API
  description: Sales opportunities moving through pipeline stages.
  humanURL: https://developer.zendesk.com/api-reference/sales-crm/introduction/
  baseURL: https://api.getbase.com
  tags:
  - Deals
  properties:
  - type: OpenAPI
    url: openapi/zendesk-sell-deals-api-openapi.yml
- aid: zendesk-sell:zendesk-sell-leads-api
  name: Zendesk Sell Leads API
  description: Pre-qualified sales prospects.
  humanURL: https://developer.zendesk.com/api-reference/sales-crm/introduction/
  baseURL: https://api.getbase.com
  tags:
  - Leads
  properties:
  - type: OpenAPI
    url: openapi/zendesk-sell-leads-api-openapi.yml
common:
- type: AgenticAccess
  url: agentic-access/zendesk-sell-agentic-access.yml
- type: VulnerabilityDisclosure
  url: security/zendesk-sell-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/zendesk-sell-domain-security.yml
- type: Authentication
  url: authentication/zendesk-sell-authentication.yml
- type: OAuthScopes
  url: scopes/zendesk-sell-scopes.yml
- type: Website
  url: https://www.zendesk.com/sell/
- type: Documentation
  url: https://developer.zendesk.com/api-reference/sales-crm/introduction/
- type: APIReference
  url: https://developer.zendesk.com/api-reference/
- type: Pricing
  url: https://www.zendesk.com/sell/pricing/
- type: Signup
  url: https://www.zendesk.com/register/
- type: Login
  url: https://www.zendesk.com/login/
- type: Support
  url: https://support.zendesk.com/
- type: GitHubOrganization
  url: https://github.com/zendesk
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Zendesk Sell

Kin Score

APIs 4

Zendesk Sell (Sales CRM) API

Zendesk Sell Contacts API

Zendesk Sell Deals API

Zendesk Sell Leads API

Open Collections 1

Zendesk Sell (Sales CRM) API

GraphQL 1

Zendesk Sell GraphQL Schema

Security Posture 3

Zendesk Sell Authentication

Zendesk Sell Domain Security

Zendesk Sell Vulnerability Disclosure