Nimble API
Nimble publishes a self-serve v1 REST API at app.nimble.com/api/v1 covering contacts, deals, custom fields, pipelines, and search. Per-account API keys come straight from settings; OAuth 2.0 apps require emailing api-support for registration. No native webhooks, so integrations poll.
Frequently asked questions
Nimble scores B on the API Report Card. Nimble publishes a self-serve v1 REST API at app.nimble.com/api/v1 covering contacts, deals, custom fields, pipelines, and search. Per-account API keys come straight from settings; OAuth 2.0 apps require emailing api-support for registration. No native webhooks, so integrations poll.
Nimble has a workable official integration path. Most engineering teams can build against it directly. Solid API with minor gaps
Nimble is a social-relationship CRM aimed at solopreneurs, small teams, and SMBs that live inside Microsoft 365 (Outlook) or Google Workspace (Gmail).
Vertical: horizontal CRM / social-relationship management for SMBs. Sub-vertical: Microsoft 365- and Google Workspace-centric small businesses. Sales reps and small-business owners install the Nimble Prospector extension in Chrome/Edge and the Outlook or Gmail add-in, then use Nimble as the system of record for every prospect and customer relationship.
Nimble is a recognized SMB CRM brand with 4.5/5 across ~1,100 G2 reviews, 4.4/5 across ~1,900 Capterra reviews, and Forbes' '2025 Best CRM for Solopreneurs and Small Teams' designation, but its absolute install base is materially smaller than HubSpot (~289k paying customers), Pipedrive, Zoho, or Salesforce.
Yes, for tens of thousands of small businesses, Nimble is the system of record for the customer-relationship dataset: the master contact and company database with social-enriched profiles and custom fields, the deal pipeline and sales forecast, every logged email/call/meeting/message with timestamps, email-marketing campaign and sequence history with opens/clicks, web-form and live-chat lead capture, tasks and reminders, segments and tags, and the OAuth/email-sync configuration that ties Nimble to the user's Outlook or Gmail mailbox.
Founded 2009 in Santa Monica, CA by Jon Ferrara, the co-founder of Goldmine Software (one of the original PC-era contact managers acquired by FrontRange in 1999).
No documented native outbound webhooks, integrations must poll contacts/deals/teams endpoints or rely on Zapier / Make triggers for change detection. Per-account rate limits are enforced but undocumented; HTTP 429 is returned without published request-per-minute/day ceilings, forcing trial-and-error backoff. Full sourced list under Sources below.
Common alternatives include HubSpot CRM, Salesforce Sales Cloud (Essentials/Starter), Zoho CRM, Pipedrive, Freshsales (Freshworks), Microsoft Dynamics 365 Sales. Graded alternatives appear under "More from the report card" below.
Grades measure one thing: can a customer's engineering team get their own data out programmatically? We check six things (whether a real API exists, how access is gated, data coverage, auth quality, docs and developer experience, and stability) and roll them into a letter grade. Grades get re-verified, and they only move on evidence.