Folk website screenshot

Folk

Folk is a collaborative CRM platform designed for agencies, investors, and sales teams who need to manage relationships at scale. It provides a REST API organized around predictable resource-oriented URLs, accepting and returning JSON-encoded payloads with standard HTTP response codes. The API enables developers to manage contacts (people and companies), pipelines and deals, notes, reminders, interactions, and custom fields programmatically. Webhooks are supported for real-time event notifications, and the platform integrates with 5,000+ tools including Gmail, Outlook, LinkedIn, WhatsApp, and Zapier. API access is available on the Premium and Enterprise plans.

Folk publishes 9 APIs on the APIs.io network, including Companies API, Deals API, Groups API, and 6 more. Tagged areas include CRM, Contacts, Pipelines, Sales, and Relationships.

The Folk catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

Folk’s developer surface includes authentication, documentation, engineering blog, pricing, and 12 more developer resources.

🌐 Visit website 📡 Source on GitHub
51.7/100 developing ▬ flat Agent 40/100 agent ready Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessPaidSelf serve
9 APIs
CRMContactsPipelinesSalesRelationshipsNotesDealsWebhooks

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 51.7/100 · developing
Contract Quality 18.9 / 25
Developer Ergonomics 4.3 / 20
Commercial Clarity 10.0 / 20
Operational Transparency 2.7 / 13
Governance 8.3 / 12
Discoverability 7.4 / 10
Agent readiness — 40/100 · agent ready
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 7 / 7
Rate-Limit Signaling 7 / 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/folk: 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 9

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

Folk Companies API

Operations related to companies.

Folk Deals API

Operations related to deals.

Folk Groups API

Operations related to groups.

Folk Interactions API

Operations related to interactions.

Folk Notes API

Operations related to notes.

Folk People API

Operations related to people.

Folk Reminders API

Operations related to reminders.

Folk Users API

Operations related to users.

Folk Webhooks API

Operations related to webhooks.

Scroll for all 9

Pricing Plans 1

Published pricing tiers and plan structures.

Folk Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Folk Rate Limits

0 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Folk Finops

FINOPS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Folk Context

28 classes · 26 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Folk API Rules

6 rules · 4 warnings 2 info

SPECTRAL

JSON Schema 1

Standalone JSON Schema definitions for this provider's data models.

Folk API Schemas

0 properties

JSON SCHEMA

Examples 1

Example request and response payloads for these APIs.

Folk Examples

1 fields

EXAMPLE

Security Posture 2

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

Folk Authentication

http · 1 scheme

SECURITY

Folk Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

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

Folk Agentic Access

39 operations · 22 acting

39 operations · 22 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Vocabulary
Vocabulary
 JSONLDContext
JSONLDContext

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrg
GitHubOrg

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication

Operate 2

Status, limits, changes, and where to get help

StatusPage
StatusPage
 RateLimits
RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Pricing
Pricing
 Plans
Plans
 FinOps
FinOps

Company 3

The organization behind the API

Website
Website
 LinkedIn
LinkedIn
 Blog
Blog

Other 1

Properties that don't map to a standard resource type

X
X

Source (apis.yml)

apis.yml Raw ↑ 
aid: folk
name: Folk
description: 'Folk is a collaborative CRM platform designed for agencies, investors, and sales teams who need to manage relationships
  at scale. It provides a REST API organized around predictable resource-oriented URLs, accepting and returning JSON-encoded
  payloads with standard HTTP response codes. The API enables developers to manage contacts (people and companies), pipelines
  and deals, notes, reminders, interactions, and custom fields programmatically. Webhooks are supported for real-time event
  notifications, and the platform integrates with 5,000+ tools including Gmail, Outlook, LinkedIn, WhatsApp, and Zapier. API
  access is available on the Premium and Enterprise plans.

  '
type: Index
accessModel:
  pricing: paid
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Paid · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/folk.png
url: https://raw.githubusercontent.com/api-evangelist/folk/refs/heads/main/apis.yml
created: '2026-06-12'
modified: '2026-06-12'
specificationVersion: '0.19'
tags:
- CRM
- Contacts
- Pipelines
- Sales
- Relationships
- Notes
- Deals
- Webhooks
apis:
- aid: folk:folk-companies-api
  name: Folk Companies API
  description: Operations related to companies.
  humanURL: https://developer.folk.app/
  baseURL: https://api.folk.app
  tags:
  - Companies
  properties:
  - type: OpenAPI
    url: openapi/folk-companies-api-openapi.yml
  - type: Documentation
    url: https://developer.folk.app/
  - type: JSONSchema
    url: json-schema/folk-schemas.json
  - type: Examples
    url: examples/folk-examples.json
- aid: folk:folk-deals-api
  name: Folk Deals API
  description: Operations related to deals.
  humanURL: https://developer.folk.app/
  baseURL: https://api.folk.app
  tags:
  - Deals
  properties:
  - type: OpenAPI
    url: openapi/folk-deals-api-openapi.yml
  - type: Documentation
    url: https://developer.folk.app/
  - type: JSONSchema
    url: json-schema/folk-schemas.json
  - type: Examples
    url: examples/folk-examples.json
- aid: folk:folk-groups-api
  name: Folk Groups API
  description: Operations related to groups.
  humanURL: https://developer.folk.app/
  baseURL: https://api.folk.app
  tags:
  - Groups
  properties:
  - type: OpenAPI
    url: openapi/folk-groups-api-openapi.yml
  - type: Documentation
    url: https://developer.folk.app/
  - type: JSONSchema
    url: json-schema/folk-schemas.json
  - type: Examples
    url: examples/folk-examples.json
- aid: folk:folk-interactions-api
  name: Folk Interactions API
  description: Operations related to interactions.
  humanURL: https://developer.folk.app/
  baseURL: https://api.folk.app
  tags:
  - Interactions
  properties:
  - type: OpenAPI
    url: openapi/folk-interactions-api-openapi.yml
  - type: Documentation
    url: https://developer.folk.app/
  - type: JSONSchema
    url: json-schema/folk-schemas.json
  - type: Examples
    url: examples/folk-examples.json
- aid: folk:folk-notes-api
  name: Folk Notes API
  description: Operations related to notes.
  humanURL: https://developer.folk.app/
  baseURL: https://api.folk.app
  tags:
  - Notes
  properties:
  - type: OpenAPI
    url: openapi/folk-notes-api-openapi.yml
  - type: Documentation
    url: https://developer.folk.app/
  - type: JSONSchema
    url: json-schema/folk-schemas.json
  - type: Examples
    url: examples/folk-examples.json
- aid: folk:folk-people-api
  name: Folk People API
  description: Operations related to people.
  humanURL: https://developer.folk.app/
  baseURL: https://api.folk.app
  tags:
  - People
  properties:
  - type: OpenAPI
    url: openapi/folk-people-api-openapi.yml
  - type: Documentation
    url: https://developer.folk.app/
  - type: JSONSchema
    url: json-schema/folk-schemas.json
  - type: Examples
    url: examples/folk-examples.json
- aid: folk:folk-reminders-api
  name: Folk Reminders API
  description: Operations related to reminders.
  humanURL: https://developer.folk.app/
  baseURL: https://api.folk.app
  tags:
  - Reminders
  properties:
  - type: OpenAPI
    url: openapi/folk-reminders-api-openapi.yml
  - type: Documentation
    url: https://developer.folk.app/
  - type: JSONSchema
    url: json-schema/folk-schemas.json
  - type: Examples
    url: examples/folk-examples.json
- aid: folk:folk-users-api
  name: Folk Users API
  description: Operations related to users.
  humanURL: https://developer.folk.app/
  baseURL: https://api.folk.app
  tags:
  - Users
  properties:
  - type: OpenAPI
    url: openapi/folk-users-api-openapi.yml
  - type: Documentation
    url: https://developer.folk.app/
  - type: JSONSchema
    url: json-schema/folk-schemas.json
  - type: Examples
    url: examples/folk-examples.json
- aid: folk:folk-webhooks-api
  name: Folk Webhooks API
  description: Operations related to webhooks.
  humanURL: https://developer.folk.app/
  baseURL: https://api.folk.app
  tags:
  - Webhooks
  properties:
  - type: OpenAPI
    url: openapi/folk-webhooks-api-openapi.yml
  - type: Documentation
    url: https://developer.folk.app/
  - type: JSONSchema
    url: json-schema/folk-schemas.json
  - type: Examples
    url: examples/folk-examples.json
common:
- type: AgenticAccess
  url: agentic-access/folk-agentic-access.yml
- type: DomainSecurity
  url: security/folk-domain-security.yml
- type: Authentication
  url: authentication/folk-authentication.yml
- type: Website
  url: https://www.folk.app/
- type: Documentation
  url: https://developer.folk.app/
- type: GitHubOrg
  url: https://github.com/folk-js
- type: LinkedIn
  url: https://www.linkedin.com/company/folkhq/
- type: Blog
  url: https://www.folk.app/blog
- type: Pricing
  url: https://www.folk.app/pricing
- type: StatusPage
  url: https://status.folk.app/
- type: X
  url: https://twitter.com/FolkHQ
- type: Vocabulary
  url: vocabulary/folk-vocabulary.yml
- type: JSONLDContext
  url: json-ld/folk-context.jsonld
- type: Plans
  url: plans/folk-plans-pricing.yml
- type: RateLimits
  url: rate-limits/folk-rate-limits.yml
- type: FinOps
  url: finops/folk-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com