# Nutshell

**Canonical:** https://apis.io/providers/nutshell/  
**Website:** https://www.nutshell.com  
**APIs profiled:** 27

Nutshell is a CRM and email-marketing platform for small and mid-sized B2B sales teams, combining pipeline management, contact and company records, activity tracking, reporting, sales automation and built-in outbound email campaigns in one workspace with mobile and desktop clients. For developers Nutshell publishes a documented REST API of 112 operations across 24 resource families at app.nutshell.com/rest, an authenticated GraphQL endpoint, a legacy JSON-RPC API kept alive for existing integrations, an outbound webhook firehose, read-only SQL access on the Enterprise plan, and a remote, OAuth-protected MCP server at app.nutshell.com/mcp that exposes read-only CRM context to AI assistants.

## Kin Score — 61.3 / 100 (strong)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 61.3).

| Facet | Score |
|---|---|
| Discoverability | 81.5 |
| Contract Quality | 62.0 |
| Governance | 30.3 |
| Contract Governance | 30.3 |
| Operational Transparency | 38.2 |
| Developer Ergonomics | 53.0 |
| Commercial Clarity | 92.1 |
| Access Clarity | 92.1 |

## Agent readiness — 45.8 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | documented |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | documented |
| OpenAPI Examples | partial |
| Rate Limit Signal | documented |
| Event Surface Described | yes |
| Agent Skills | derived |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Paid · Self-serve signup · Free trial — onboarding: self-serve, pricing: paid, trial: yes (confidence: high).

## APIs (27)

- **Nutshell REST API** — Nutshell's primary REST API — 87 paths and 112 operations across 24 resource families (accounts, contacts, leads, activities, notes, tasks, products, quotes, invoices, pipelines...
- **Nutshell Legacy JSON-RPC API** — Nutshell's original JSON-RPC API, available since 2010. Nutshell states it is no longer adding new endpoints to this API but continues to support existing customers, making it a...
- **Nutshell GraphQL API** — A GraphQL endpoint served at https://app.nutshell.com/graphql. Nutshell's API authentication guide names GraphQL alongside REST and JSON-RPC as an authenticated surface. Introsp...
- **Nutshell Accounts (Companies) API** — Companies and organizations you do business with (shown as Companies in the Nutshell UI): create, read, update, delete, undelete, list, custom fields, account types and industri...
- **Nutshell Activities API** — Meetings, calls and logged interactions attached to Nutshell records, plus the activity type reference. 5 operation(s) across 3 path(s).
- **Nutshell Audiences API** — Email-marketing audiences — static lists of contacts used to organize people for marketing sends. 2 operation(s) across 1 path(s).
- **Nutshell Competitors API** — Competitor records and the lead-to-competitor relationships (competitor maps) attached to a lead. 6 operation(s) across 4 path(s).
- **Nutshell Contacts (People) API** — People you do business with (shown as People in the Nutshell UI): create, read, update, delete, undelete, list and contact custom fields. 11 operation(s) across 8 path(s).
- **Nutshell Editions API** — Marketing email editions — individual email sends and their metadata. 2 operation(s) across 2 path(s).
- **Nutshell Emails API** — Individual email messages recorded against Nutshell records. 1 operation(s) across 1 path(s).
- **Nutshell Events (Timeline) API** — The Nutshell timeline/change-log feed, including a separate feed of deletion events. 2 operation(s) across 2 path(s).
- **Nutshell Filters API** — Saved filters and lists used to scope list endpoints across the core Nutshell entities. 1 operation(s) across 1 path(s).
- **Nutshell Forms API** — Nutshell Forms and their fields, including the field IDs used in each published form. 3 operation(s) across 3 path(s).
- **Nutshell Industries API** — The industry reference list used to classify accounts. 1 operation(s) across 1 path(s).
- **Nutshell Invoices API** — Invoice documents, their status transitions and payment/completion metadata. 3 operation(s) across 3 path(s).
- **Nutshell Leads API** — Sales opportunities: create, read, update, close, reopen, watch, stage and stageset assignment, installments, reports and lead custom fields. 25 operation(s) across 19 path(s).
- **Nutshell Markets API** — Market records used to segment Nutshell data. 2 operation(s) across 2 path(s).
- **Nutshell Notes API** — Free-text notes attached to accounts, contacts and leads, with delete and undelete. 5 operation(s) across 3 path(s).
- **Nutshell Pipelines (Stagesets) API** — Pipelines (stagesets) and their stages, plus a CSV export of lead movement through a pipeline. 3 operation(s) across 3 path(s).
- **Nutshell Product Categories API** — Product categories used to group the products attached to leads and quotes. 3 operation(s) across 2 path(s).
- **Nutshell Products API** — The product catalog and product maps — instances of a product attached to a lead with quantity and custom pricing. 8 operation(s) across 6 path(s).
- **Nutshell Quotes API** — Quote documents, their status transitions, and creating an invoice from a quote. 4 operation(s) across 4 path(s).
- **Nutshell Sources API** — Lead sources — how leads arrive at your website and learn about your business. 4 operation(s) across 3 path(s).
- **Nutshell Tags API** — Tags used to group leads, contacts and accounts, with delete and undelete. 4 operation(s) across 3 path(s).
- **Nutshell Tasks API** — Tasks assigned to Nutshell users, including assignee updates. 5 operation(s) across 2 path(s).
- **Nutshell Territories API** — Sales territories used to scope ownership of Nutshell records. 1 operation(s) across 1 path(s).
- **Nutshell Users API** — Nutshell users in the instance. 2 operation(s) across 2 path(s).

## MCP servers (1)

- **Nutshell MCP server**

## Agentic access (1)

- **Nutshell Agentic Access** — 116 operations · 47 acting

## Security (3)

- **Nutshell Authentication** — http/oauth2 · 2 schemes
- **Nutshell Domain Security** — TLSv1.3 · HSTS · DMARC
- **Nutshell Trust Center** — SOC 2, GDPR

## Plans (1)

- **Nutshell Plans Pricing**

## Tags

CRM, Sales, Pipeline Management, Email Marketing, Contact Management, Sales Automation, Lead Management, Marketing Automation, MCP, B2B

---

Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/nutshell/). Scores are computed from the provider's own public artifacts under a published rubric.