Grin website screenshot

Grin

GRIN is a creator management and influencer marketing platform for consumer and eCommerce brands, operating in the creator economy. Brands use GRIN to discover creators, manage relationships and content, run affiliate and ambassador programs, handle creator payments, track performance, and measure ROI at scale. The product line includes GRIN Classic, a manual creator and affiliate management platform, and Gia, an AI assistant that automates affiliate program management. GRIN exposes a bi-directional REST API (documented on Stoplight at api.grin.co) so a brand's own software can synchronize creators, content, and program data with GRIN, alongside native integrations for Shopify, Klaviyo, PayPal, Slack, and other commerce tools.

Grin publishes 1 API on the APIs.io network. Tagged areas include Company, Influencer Marketing, Creator Economy, Creator Management, and Affiliate Marketing.

Grin’s developer surface includes API reference, documentation, support, engineering blog, signup flow, and 12 more developer resources.

🌐 Visit website 📡 Source on GitHub
26.3/100 emerging ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-08-10 · rubric v0.9.1
1 APIs
CompanyInfluencer MarketingCreator EconomyCreator ManagementAffiliate MarketingMarketingSocial MediaeCommerce

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-10 · rubric v0.9.1
Composite quality — 26.3/100 · emerging
Contract Quality 0.0 / 25
Developer Ergonomics 6.1 / 20
Commercial Clarity 10.0 / 20
Operational Transparency 3.4 / 13
Governance 0.0 / 12
Discoverability 6.9 / 10
Agent readiness — 0/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 10
MCP Server 0 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 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/grin: 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 1

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

GRIN API

GRIN's bi-directional REST API lets a brand's own software communicate with GRIN to synchronize creators, content, programs, and reporting data. Reference documentation is publi...

Security Posture 3

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

Grin Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Grin Vulnerability Disclosure

disclosure policy published

SECURITY

Grin Trust Center

SOC 2, GDPR

SECURITY

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal
DeveloperPortal
 SignUp
SignUp
 Login
Login

Documentation 2

Reference material describing how the API behaves

APIReference
APIReference
 Documentation
Documentation

Access & Security 5

Authentication, authorization, and security posture

TrustCenter
TrustCenter
 VulnerabilityDisclosure
VulnerabilityDisclosure
 DomainSecurity
DomainSecurity
 Security
Security
 Compliance
Compliance

Operate 3

Status, limits, changes, and where to get help

Support
Support
 Community
Community
 StatusPage
StatusPage

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Company 2

The organization behind the API

Website
Website
 Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: grin
name: Grin
description: GRIN is a creator management and influencer marketing platform for consumer and eCommerce brands, operating in
  the creator economy. Brands use GRIN to discover creators, manage relationships and content, run affiliate and ambassador
  programs, handle creator payments, track performance, and measure ROI at scale. The product line includes GRIN Classic,
  a manual creator and affiliate management platform, and Gia, an AI assistant that automates affiliate program management.
  GRIN exposes a bi-directional REST API (documented on Stoplight at api.grin.co) so a brand's own software can synchronize
  creators, content, and program data with GRIN, alongside native integrations for Shopify, Klaviyo, PayPal, Slack, and other
  commerce tools.
url: https://raw.githubusercontent.com/api-evangelist/grin/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- 500-global
- bond-capital
- bullpen-capital
x-tier: stub
x-tier-reason: portfolio-lead
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://grin.co/wp-content/uploads/2022/11/2022_GRIN_Logo_Black_Transparent-Bkgnd-small.webp
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- Influencer Marketing
- Creator Economy
- Creator Management
- Affiliate Marketing
- Marketing
- Social Media
- eCommerce
apis:
- name: GRIN API
  description: GRIN's bi-directional REST API lets a brand's own software communicate with GRIN to synchronize creators, content,
    programs, and reporting data. Reference documentation is published on Stoplight at api.grin.co.
  humanURL: https://api.grin.co/
  baseURL: https://api.grin.co
  properties:
  - type: APIReference
    url: https://api.grin.co/
  - type: Documentation
    url: https://help.grin.co
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: TrustCenter
  url: security/grin-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/grin-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/grin-domain-security.yml
- type: Security
  url: https://grin.co/security/
- type: Compliance
  url: https://grin.co/security/
- type: Website
  url: https://grin.co
- type: DeveloperPortal
  url: https://api.grin.co/
- type: APIReference
  url: https://api.grin.co/
- type: Documentation
  url: https://help.grin.co
- type: Support
  url: https://help.grin.co
- type: Community
  url: https://community.grin.co/
- type: Blog
  url: https://grin.co/blog
- type: StatusPage
  url: https://status.grin.co/
- type: Integrations
  url: https://grin.co/integrations/
- type: SignUp
  url: https://grin.co/get-started/
- type: Login
  url: https://app.grin.co/login
- type: TermsOfService
  url: https://grin.co/terms/
- type: PrivacyPolicy
  url: https://grin.co/privacy/
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence