Nimble website screenshot

Nimble

Nimble is a relationship-focused CRM that unifies contacts, communications, social profiles, calendar and email into a single shared record for small businesses and whole-company teams. Founded in 2010 by GoldMine co-founder Jon Ferrara and headquartered in Santa Monica, California, the platform combines contact management, sales pipelines, email marketing, sequences, web forms, web chat and workflow automation, and enriches contact profiles automatically from email, calendar, social and web data. Nimble publishes a full OpenAPI 3.0.0 contract for its REST API — 89 operations over contacts, user-definable contact fields, contact and deal pipelines, deals, leads, activities, tasks and messages — authenticated with an account API key or OAuth 2.0 authorization_code.

Nimble publishes 13 APIs on the APIs.io network, including REST API, Activities API, Contacts API, and 10 more. Tagged areas include CRM, Sales, Contact Management, Relationship Management, and Marketing Automation.

Nimble’s developer surface includes documentation, API reference, getting-started guide, support, engineering blog, pricing, signup flow, and 23 more developer resources.

🌐 Visit website 📡 Source on GitHub
51.6/100 developing ▬ flat Agent 42/100 agent ready Full breakdown ↓
scored 2026-08-20 · rubric v0.12.0
AccessPaidFree trial
13 APIs 1 MCP Servers
CRMSalesContact ManagementRelationship ManagementMarketing AutomationPipeline ManagementSmall BusinessEmail MarketingSales AutomationLead Management

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-20 · rubric v0.12.0
Composite quality — 51.6/100 · developing
Contract Quality 14.5 / 25
Developer Ergonomics 11.8 / 20
Access Clarity 13.2 / 20
Operational Transparency 2.1 / 13
Contract Governance 2.0 / 12
Discoverability 8.2 / 10
Agent readiness — 42/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
Documented Reversibility 6 / 6
MCP Server 0 / 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 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 13

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

Nimble REST API

The Nimble CRM REST API — 89 operations across contacts, contact custom fields, contact and deal pipelines, deals, leads, activities, tasks, messages and users. Nimble publishes...

Nimble Activities API

Account activity stream — list activities across contacts and deals, walked with a next_tstamp timestamp cursor. 1 operation(s).

Nimble Contacts API

Contact records — the Nimble platform root object. Create, read, update and delete person and company contacts, search them with keyword or the advanced JSON query syntax, manag...

Nimble Contacts Fields API

User-definable contact field schema — fields, choice option lists, field groups and tabs, plus primary-value marks on multi-valued fields. The field set differs per account and ...

Nimble Contacts Pipelines API

Contact pipelines — the lead-progression surface for contacts, distinct from deal pipelines. 8 operation(s).

Nimble Deals API

Deals on the /api/v2 surface — create, update and delete deals, attach notes and files, manage deal tags, list overdue activity and read the won-last-month rollup. 18 operation(s).

Nimble Deals Fields API

Deal field surface — the user deal field list and the column catalogue backing Nimble's deal listing views. 2 operation(s).

Nimble Deals Pipelines API

Deal pipelines and stages — create and reshape pipelines, add and archive stages, set lost reasons, and read the deal book grouped by stage or by owner. 13 operation(s).

Nimble Deals Pipelines Fields API

Per-pipeline deal custom fields — fields, choice lists and field groups scoped to a single deal pipeline. 9 operation(s).

Nimble Leads API

Lead transitions through contact pipelines — move a lead between stages, mark it exited successfully or unsuccessfully, and undo a transition. 7 operation(s).

Nimble Messages API

Message drafts — list and create draft messages. 2 operation(s).

Nimble Tasks API

Task creation against contacts. 1 operation(s).

Nimble Users API

The authenticated user record — the credential-verification endpoint. 1 operation(s).

Scroll for all 13

Open Collections 9

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

API Collection

OPEN COLLECTION

Nimble CRM Contacts API

OPEN COLLECTION

Nimble CRM Contacts Deals API

OPEN COLLECTION

Nimble CRM Contacts Fields API

OPEN COLLECTION

Nimble CRM Contacts Messages API

OPEN COLLECTION

Nimble CRM Contacts Notes API

OPEN COLLECTION

Nimble CRM Contacts Pipelines API

OPEN COLLECTION

Nimble CRM Contacts Users API

OPEN COLLECTION

Nimble CRM API

OPEN COLLECTION

Scroll for all 9

MCP Servers 1

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

Nimble MCP Server

MCP SERVER

Pricing Plans 1

Published pricing tiers and plan structures.

Nimble Plans Pricing

1 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Nimble Rate Limits

0 limits

RATE LIMITS

Security Posture 2

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

Nimble Authentication

apiKey/http/oauth2 · 3 schemes

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

96 operations · 70 acting

96 operations · 70 acting

AGENTIC

Resources

Get Started 4

Portal, sign-up, and the first successful call

DeveloperPortal
DeveloperPortal
 GettingStarted
GettingStarted
 SignUp
SignUp
 Login
Login

Documentation 2

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

MCPServer
MCPServer
 LLMsTxt
LLMsTxt
 AgentSkill
AgentSkill
 AgenticAccess
AgenticAccess

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conventions
Conventions
 ErrorCatalog
ErrorCatalog
 Lifecycle
Lifecycle
 DataModel
DataModel
 Conformance
Conformance

Build 1

SDKs, sample code, and the tooling you integrate with

Packages
Packages

Access & Security 3

Authentication, authorization, and security posture

Authentication
Authentication
 OAuthScopes
OAuthScopes
 DomainSecurity
DomainSecurity

Operate 3

Status, limits, changes, and where to get help

Support
Support
 StatusPage
StatusPage
 RateLimits
RateLimits

Commercial 4

Pricing, plans, and the legal terms of use

Pricing
Pricing
 TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy
 Plans
Plans

Company 4

The organization behind the API

Website
Website
 Blog
Blog
 BlogRSS
BlogRSS
 LinkedIn
LinkedIn

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 shared record for small businesses and whole-company teams. Founded in 2010 by GoldMine co-founder Jon Ferrara
  and headquartered in Santa Monica, California, the platform combines contact management, sales pipelines, email marketing,
  sequences, web forms, web chat and workflow automation, and enriches contact profiles automatically from email, calendar,
  social and web data. Nimble publishes a full OpenAPI 3.0.0 contract for its REST API — 89 operations over contacts, user-definable
  contact fields, contact and deal pipelines, deals, leads, activities, tasks and messages — authenticated with an account
  API key or OAuth 2.0 authorization_code.
type: Index
accessModel:
  pricing: paid
  onboarding: self-service
  trial: true
  try_now: false
  public: true
  label: Self-service with free trial
  confidence: high
  source:
  - https://www.nimble.com/pricing/
  - https://support.nimble.com/en/articles/502755-nimble-api-access
  generated: '2026-08-13'
  method: searched
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/nimble.png
tags:
- CRM
- Sales
- Contact Management
- Relationship Management
- Marketing Automation
- Pipeline Management
- Small Business
- Email Marketing
- Sales Automation
- Lead Management
url: https://raw.githubusercontent.com/api-evangelist/nimble/refs/heads/main/apis.yml
created: '2026-05-11'
modified: '2026-08-13'
specificationVersion: '0.23'
apis:
- aid: nimble:rest-api
  name: Nimble REST API
  description: 'The Nimble CRM REST API — 89 operations across contacts, contact custom fields, contact and deal pipelines,
    deals, leads, activities, tasks, messages and users. Nimble publishes a full OpenAPI 3.0.0 contract (58 paths, 180 component
    schemas) embedded in its developer reference. Authentication accepts an account API key as an X-Nimble-Token header or
    an Authorization: Bearer token, or OAuth 2.0 authorization_code with the coarse basic / contacts / deals scopes. Versioning
    is per resource family: /api/v1 for contacts, /api/v2 for deals.'
  humanURL: https://www.nimble.com/developers/docs/
  baseURL: https://app.nimble.com
  tags:
  - CRM
  - Contacts
  - Deals
  - Activities
  - Task
  - Leads
  tags_raw:
  - CRM
  - Contacts
  - Deals
  - Activities
  - Tasks
  - Leads
  properties:
  - type: OpenAPI
    url: openapi/_original/nimble-openapi-original.yml
  - type: Documentation
    url: https://www.nimble.com/developers/docs/
  - type: APIReference
    url: https://www.nimble.com/developers/docs/
  - type: DeveloperPortal
    url: https://www.nimble.com/developers/docs/
  - type: Authentication
    url: authentication/nimble-authentication.yml
  - type: GettingStarted
    url: https://support.nimble.com/en/articles/502755-nimble-api-access
  - type: Support
    url: mailto:api-support@nimble.com
- aid: nimble:nimble-activities-api
  name: Nimble Activities API
  description: Account activity stream — list activities across contacts and deals, walked with a next_tstamp timestamp cursor.
    1 operation(s).
  humanURL: https://www.nimble.com/developers/docs/
  baseURL: https://app.nimble.com
  tags:
  - Activities
  - Timelines
  tags_raw:
  - Activities
  - Timeline
  properties:
  - type: OpenAPI
    url: openapi/nimble-activities-api-openapi.yml
  - type: Overlay
    url: overlays/nimble-activities-overlay.yaml
- aid: nimble:nimble-contacts-api
  name: Nimble Contacts API
  description: Contact records — the Nimble platform root object. Create, read, update and delete person and company contacts,
    search them with keyword or the advanced JSON query syntax, manage notes and tags. Contact fields are returned as arrays
    of labelled {value, label, modifier} objects rather than flat scalars. 19 operation(s).
  humanURL: https://www.nimble.com/developers/docs/
  baseURL: https://app.nimble.com
  tags:
  - Contacts
  - CRM
  - Search
  - Notes
  properties:
  - type: OpenAPI
    url: openapi/nimble-contacts-api-openapi.yml
  - type: Overlay
    url: overlays/nimble-contacts-overlay.yaml
- aid: nimble:nimble-contacts-fields-api
  name: Nimble Contacts Fields API
  description: User-definable contact field schema — fields, choice option lists, field groups and tabs, plus primary-value
    marks on multi-valued fields. The field set differs per account and must be read before writing contact data. 15 operation(s).
  humanURL: https://www.nimble.com/developers/docs/
  baseURL: https://app.nimble.com
  tags:
  - Contacts
  - Custom Fields
  - Schema
  properties:
  - type: OpenAPI
    url: openapi/nimble-contacts-fields-api-openapi.yml
  - type: Overlay
    url: overlays/nimble-contacts-fields-overlay.yaml
- aid: nimble:nimble-contacts-pipelines-api
  name: Nimble Contacts Pipelines API
  description: Contact pipelines — the lead-progression surface for contacts, distinct from deal pipelines. 8 operation(s).
  humanURL: https://www.nimble.com/developers/docs/
  baseURL: https://app.nimble.com
  tags:
  - Contacts
  - Pipelines
  - Leads
  properties:
  - type: OpenAPI
    url: openapi/nimble-contacts-pipelines-api-openapi.yml
  - type: Overlay
    url: overlays/nimble-contacts-pipelines-overlay.yaml
- aid: nimble:nimble-deals-api
  name: Nimble Deals API
  description: Deals on the /api/v2 surface — create, update and delete deals, attach notes and files, manage deal tags, list
    overdue activity and read the won-last-month rollup. 18 operation(s).
  humanURL: https://www.nimble.com/developers/docs/
  baseURL: https://app.nimble.com
  tags:
  - Deals
  - Sales
  - Pipeline Management
  properties:
  - type: OpenAPI
    url: openapi/nimble-deals-api-openapi.yml
  - type: Overlay
    url: overlays/nimble-deals-overlay.yaml
- aid: nimble:nimble-deals-fields-api
  name: Nimble Deals Fields API
  description: Deal field surface — the user deal field list and the column catalogue backing Nimble's deal listing views.
    2 operation(s).
  humanURL: https://www.nimble.com/developers/docs/
  baseURL: https://app.nimble.com
  tags:
  - Deals
  - Custom Fields
  properties:
  - type: OpenAPI
    url: openapi/nimble-deals-fields-api-openapi.yml
  - type: Overlay
    url: overlays/nimble-deals-fields-overlay.yaml
- aid: nimble:nimble-deals-pipelines-api
  name: Nimble Deals Pipelines API
  description: Deal pipelines and stages — create and reshape pipelines, add and archive stages, set lost reasons, and read
    the deal book grouped by stage or by owner. 13 operation(s).
  humanURL: https://www.nimble.com/developers/docs/
  baseURL: https://app.nimble.com
  tags:
  - Deals
  - Pipelines
  - Sales
  properties:
  - type: OpenAPI
    url: openapi/nimble-deals-pipelines-api-openapi.yml
  - type: Overlay
    url: overlays/nimble-deals-pipelines-overlay.yaml
- aid: nimble:nimble-deals-pipelines-fields-api
  name: Nimble Deals Pipelines Fields API
  description: Per-pipeline deal custom fields — fields, choice lists and field groups scoped to a single deal pipeline. 9
    operation(s).
  humanURL: https://www.nimble.com/developers/docs/
  baseURL: https://app.nimble.com
  tags:
  - Deals
  - Custom Fields
  - Pipelines
  properties:
  - type: OpenAPI
    url: openapi/nimble-deals-pipelines-fields-api-openapi.yml
  - type: Overlay
    url: overlays/nimble-deals-pipelines-fields-overlay.yaml
- aid: nimble:nimble-leads-api
  name: Nimble Leads API
  description: Lead transitions through contact pipelines — move a lead between stages, mark it exited successfully or unsuccessfully,
    and undo a transition. 7 operation(s).
  humanURL: https://www.nimble.com/developers/docs/
  baseURL: https://app.nimble.com
  tags:
  - Leads
  - Pipelines
  - Sales
  properties:
  - type: OpenAPI
    url: openapi/nimble-leads-api-openapi.yml
  - type: Overlay
    url: overlays/nimble-leads-overlay.yaml
- aid: nimble:nimble-messages-api
  name: Nimble Messages API
  description: Message drafts — list and create draft messages. 2 operation(s).
  humanURL: https://www.nimble.com/developers/docs/
  baseURL: https://app.nimble.com
  tags:
  - Message
  - Email
  tags_raw:
  - Messages
  - Email
  properties:
  - type: OpenAPI
    url: openapi/nimble-messages-api-openapi.yml
  - type: Overlay
    url: overlays/nimble-messages-overlay.yaml
- aid: nimble:nimble-tasks-api
  name: Nimble Tasks API
  description: Task creation against contacts. 1 operation(s).
  humanURL: https://www.nimble.com/developers/docs/
  baseURL: https://app.nimble.com
  tags:
  - Task
  - Productivity
  tags_raw:
  - Tasks
  - Productivity
  properties:
  - type: OpenAPI
    url: openapi/nimble-tasks-api-openapi.yml
  - type: Overlay
    url: overlays/nimble-tasks-overlay.yaml
- aid: nimble:nimble-users-api
  name: Nimble Users API
  description: The authenticated user record — the credential-verification endpoint. 1 operation(s).
  humanURL: https://www.nimble.com/developers/docs/
  baseURL: https://app.nimble.com
  tags:
  - User
  - Authentication
  tags_raw:
  - Users
  - Authentication
  properties:
  - type: OpenAPI
    url: openapi/nimble-users-api-openapi.yml
  - type: Overlay
    url: overlays/nimble-users-overlay.yaml
common:
- type: Website
  url: https://www.nimble.com
- type: DeveloperPortal
  url: https://www.nimble.com/developers/docs/
- type: Documentation
  url: https://www.nimble.com/developers/docs/
- type: APIReference
  url: https://www.nimble.com/developers/docs/
- type: GettingStarted
  url: https://support.nimble.com/en/articles/502755-nimble-api-access
- type: Support
  url: https://support.nimble.com/en/
- type: Blog
  url: https://www.nimble.com/blog/
- type: BlogRSS
  url: https://www.nimble.com/blog/feed/
- type: Pricing
  url: https://www.nimble.com/pricing/
- type: SignUp
  url: https://www.nimble.com/register/business_trial/
- type: Login
  url: https://app.nimble.com/
- type: TermsOfService
  url: https://www.nimble.com/company/terms-of-service/
- type: PrivacyPolicy
  url: https://www.nimble.com/company/privacy/
- type: StatusPage
  url: https://status.nimble.com/
- type: Integrations
  url: https://www.nimble.com/marketplace/
- type: LinkedIn
  url: https://www.linkedin.com/company/nimblecrm
- type: Authentication
  url: authentication/nimble-authentication.yml
- type: OAuthScopes
  url: scopes/nimble-scopes.yml
- type: Conventions
  url: conventions/nimble-conventions.yml
- type: ErrorCatalog
  url: errors/nimble-problem-types.yml
- type: Lifecycle
  url: lifecycle/nimble-lifecycle.yml
- type: RateLimits
  url: rate-limits/nimble-rate-limits.yml
- type: Plans
  url: plans/nimble-plans-pricing.yml
- type: DataModel
  url: data-model/nimble-data-model.yml
- type: Conformance
  url: conformance/nimble-conformance.yml
- type: Packages
  url: packages/nimble-packages.yml
- type: MCPServer
  url: mcp/nimble-mcp.yml
- type: LLMsTxt
  url: llms/nimble-llms.txt
- type: AgentSkill
  url: skills/_index.yml
- type: AgenticAccess
  url: agentic-access/nimble-agentic-access.yml
- type: DomainSecurity
  url: security/nimble-domain-security.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
x-enrichment:
  date: '2026-08-13'
  status: enriched
  artifacts_added: 39
  pass: local-v1