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 12 API contracts indexed on the APIs.io network, including Activities API, Contacts API, Contacts Fields API, and 9 more. Tagged areas include CRM, Sales, Contact Management, Relationship Management, and Marketing Automation.
The Nimble catalog on APIs.io includes 1 Spectral governance ruleset.
Nimble’s developer surface includes documentation, API reference, getting-started guide, support, engineering blog, pricing, signup flow, and 24 more developer resources.
51.7/100developing▬ flatAgent32/100agent readyFront door AI4/6
moderate
Heartbeat100/100
alive
saas
Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →
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):
MCP Server+12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
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)
A2A Agent Card+8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Delegated User Identity+6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)
Typed Event Surface+6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks
5 more unmet checks in the Agent Readiness table above.
Kin Score — facets with the most composite points still available (weight × headroom):
The Kin Score Market layer reads a provider inside its market:
its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted:
not part of the Kin Score or agent readiness.
Registered MCP server and declares compatibility are report only — not weighted.
Undeclared means we found nothing we can read, so there is no number: we never infer integrations.
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.
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...
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 ...
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).
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).
Lead transitions through contact pipelines — move a lead between stages, mark it exited successfully or unsuccessfully, and undo a transition. 7 operation(s).
Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.
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
deliveryModel:
model: saas
open_source: false
commercial: true
callable_host: true
label: Hosted service · you call their endpoint
confidence: high
source:
- openapi
- pricing
generated: '2026-08-28'
method: derived
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: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: CapabilityMap
url: capabilities/nimble-capability-edges.yml
name: Nimble Business Capability Map
- 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: X-MCPServerCandidate
url: mcp/nimble-mcp.yml
note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list derived
from the published API contracts, not an existing server. The scorer already read the manifest and reported mcp_server
correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- 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
Nimble API — frequently asked questions
Does Nimble have an API?
Yes. APIs.io lists 12 APIs from Nimble, including Nimble Activities API, Nimble Contacts API and Nimble Contacts Fields API, and 9 more.
Is there an OpenAPI specification for the Nimble API?
Yes. APIs.io indexes 12 OpenAPI specifications for Nimble, each linked for download from this page.
How do I authenticate with the Nimble API?
Nimble uses bearer-token authentication (apiKey/http/oauth2 · 3 schemes). The details are profiled on APIs.io as Nimble Authentication.
How much does the Nimble API cost?
Nimble publishes its prices; its Nimble Business plan is $24.9 as of 2026-08-13. APIs.io lists 1 pricing plan for Nimble, with each plan's price, limits and inclusions under Pricing on this page.
Is the Nimble API ready for AI agents?
Nimble has a Kin Score of 51.7 out of 100 (developing) and an Agent Readiness score of 32.1 (agent-ready), scored by API Evangelist on 2026-11-06.
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