Nimble

Nimble is a relationship-focused CRM that unifies contacts, communications, social profiles, calendar, and email into a single workspace for small businesses and sales teams. The platform enriches contact records with social and business data, supports pipeline management, group messaging, and workflow automation across Microsoft 365 and Google Workspace. Nimble's REST API exposes contacts, deals, activities, and tasks via Bearer token authentication for building integrations and syncing CRM data.

Nimble publishes 7 APIs on the APIs.io network, including Contacts API, Deals API, Fields API, and 4 more. Tagged areas include CRM, Sales, Contact Management, Relationship Management, and Marketing Automation.

Nimble’s developer surface includes authentication, engineering blog, and 3 more developer resources.

🌐 Visit website 📡 Source on GitHub
22.5/100 emerging ▬ flat Agent 28/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessApproval
8 APIs
CRMSalesContact ManagementRelationship ManagementMarketing AutomationPipeline Management

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 22.5/100 · emerging
Contract Quality 12.5 / 25
Developer Ergonomics 2.6 / 20
Commercial Clarity 0.0 / 20
Operational Transparency 0.0 / 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/nimble: 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 8

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

Nimble REST API

REST API for managing contacts, companies, deals, activities, tasks, and notes in Nimble CRM. Authentication uses an API key passed as a Bearer token in the Authorization header.

Nimble Contacts API

The Contacts API from Nimble — 4 operation(s) for contacts.

Nimble Deals API

The Deals API from Nimble — 3 operation(s) for deals.

Nimble Fields API

The Fields API from Nimble — 3 operation(s) for fields.

Nimble Messages API

The Messages API from Nimble — 2 operation(s) for messages.

Nimble Notes API

The Notes API from Nimble — 3 operation(s) for notes.

Nimble Pipelines API

The Pipelines API from Nimble — 3 operation(s) for pipelines.

Nimble Users API

The Users API from Nimble — 1 operation(s) for users.

Scroll for all 8

Open Collections 1

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Nimble CRM API

OPEN COLLECTION

Security Posture 2

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

Nimble Authentication

oauth2 · 1 scheme

SECURITY

Nimble Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Nimble Scopes

3 scopes · authorizationCode

3 scopes

SCOPES

Agentic Access 1

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

Nimble Agentic Access

28 operations · 16 acting

28 operations · 16 acting

AGENTIC

Resources

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Access & Security 3

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication
 OAuthScopes
OAuthScopes

Company 1

The organization behind the API

Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: nimble
name: Nimble
description: Nimble is a relationship-focused CRM that unifies contacts, communications, social profiles, calendar, and email
  into a single workspace for small businesses and sales teams. The platform enriches contact records with social and business
  data, supports pipeline management, group messaging, and workflow automation across Microsoft 365 and Google Workspace.
  Nimble's REST API exposes contacts, deals, activities, and tasks via Bearer token authentication for building integrations
  and syncing CRM data.
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/nimble.png
tags:
- CRM
- Sales
- Contact Management
- Relationship Management
- Marketing Automation
- Pipeline Management
url: https://raw.githubusercontent.com/api-evangelist/nimble/refs/heads/main/apis.yml
created: '2026-05-11'
modified: '2026-05-11'
specificationVersion: '0.19'
apis:
- aid: nimble:rest-api
  name: Nimble REST API
  description: REST API for managing contacts, companies, deals, activities, tasks, and notes in Nimble CRM. Authentication
    uses an API key passed as a Bearer token in the Authorization header.
  humanURL: https://www.nimble.com/developers/docs/
  baseURL: https://api.nimble.com/api/v1
  tags:
  - CRM
  - Contacts
  - Deals
  - Activities
  - Tasks
  properties:
  - type: Documentation
    url: https://www.nimble.com/developers/docs/
  - type: DeveloperPortal
    url: https://www.nimble.com/developers/
  - type: Authentication
    url: https://nimble.readthedocs.io/en/latest/authentication.html
- aid: nimble:nimble-contacts-api
  name: Nimble Contacts API
  description: The Contacts API from Nimble — 4 operation(s) for contacts.
  humanURL: https://www.nimble.com/developers/docs/
  baseURL: https://api.nimble.com/api/v1
  tags:
  - Contacts
  properties:
  - type: OpenAPI
    url: openapi/nimble-contacts-api-openapi.yml
- aid: nimble:nimble-deals-api
  name: Nimble Deals API
  description: The Deals API from Nimble — 3 operation(s) for deals.
  humanURL: https://www.nimble.com/developers/docs/
  baseURL: https://api.nimble.com/api/v1
  tags:
  - Deals
  properties:
  - type: OpenAPI
    url: openapi/nimble-deals-api-openapi.yml
- aid: nimble:nimble-fields-api
  name: Nimble Fields API
  description: The Fields API from Nimble — 3 operation(s) for fields.
  humanURL: https://www.nimble.com/developers/docs/
  baseURL: https://api.nimble.com/api/v1
  tags:
  - Fields
  properties:
  - type: OpenAPI
    url: openapi/nimble-fields-api-openapi.yml
- aid: nimble:nimble-messages-api
  name: Nimble Messages API
  description: The Messages API from Nimble — 2 operation(s) for messages.
  humanURL: https://www.nimble.com/developers/docs/
  baseURL: https://api.nimble.com/api/v1
  tags:
  - Messages
  properties:
  - type: OpenAPI
    url: openapi/nimble-messages-api-openapi.yml
- aid: nimble:nimble-notes-api
  name: Nimble Notes API
  description: The Notes API from Nimble — 3 operation(s) for notes.
  humanURL: https://www.nimble.com/developers/docs/
  baseURL: https://api.nimble.com/api/v1
  tags:
  - Notes
  properties:
  - type: OpenAPI
    url: openapi/nimble-notes-api-openapi.yml
- aid: nimble:nimble-pipelines-api
  name: Nimble Pipelines API
  description: The Pipelines API from Nimble — 3 operation(s) for pipelines.
  humanURL: https://www.nimble.com/developers/docs/
  baseURL: https://api.nimble.com/api/v1
  tags:
  - Pipelines
  properties:
  - type: OpenAPI
    url: openapi/nimble-pipelines-api-openapi.yml
- aid: nimble:nimble-users-api
  name: Nimble Users API
  description: The Users API from Nimble — 1 operation(s) for users.
  humanURL: https://www.nimble.com/developers/docs/
  baseURL: https://api.nimble.com/api/v1
  tags:
  - Users
  properties:
  - type: OpenAPI
    url: openapi/nimble-users-api-openapi.yml
common:
- type: AgenticAccess
  url: agentic-access/nimble-agentic-access.yml
- type: DomainSecurity
  url: security/nimble-domain-security.yml
- type: Authentication
  url: authentication/nimble-authentication.yml
- type: OAuthScopes
  url: scopes/nimble-scopes.yml
- url: https://www.nimble.com/blog/feed/
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com