Cello

aid: cello
name: Cello
description: Cello is an all-in-one, AI-powered referral platform for SaaS companies. It lets product teams embed in-product
  user referrals and run partner/affiliate programs with a few lines of code, then automates attribution, campaigns, notifications,
  fraud detection, and cross-border payouts. Cello ships an embeddable Referral Component and Attribution JS SDK for web plus
  native iOS, Android, Flutter, and React Native SDKs, a REST API for tokens, referral-code validation, events, and new-user
  rewards, a Growth Portal for analytics, and an official hosted MCP server exposing developer and growth-manager tools. Customers
  include Typeform, Miro, Descript, Pleo, and SmallPDF. Backed by HV Capital.
url: https://raw.githubusercontent.com/api-evangelist/cello/refs/heads/main/apis.yml
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: freemium
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: high
  source:
  - authentication
  - plans
  generated: '2026-08-13'
  method: searched
  note: List pricing is published for both product lines. Partner Referrals has a $0/mo Free tier (1 campaign, 10 partners);
    User Referrals starts at $200/mo and is metered on referral ARR, not API calls. No tier gates API, SDK or MCP access.
image: https://cello.so/wp-content/uploads/2022/12/Group-174900-1.png
x-type: company
x-source: vc-portfolio
x-backed-by:
- hv-capital
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-08-13'
tags:
- Company
- Referral Marketing
- Affiliate Marketing
- Growth
- Software-as-a-Service
- Attribution
- Partner Programs
- Ai Enterprise Software
tags_raw:
- Company
- Referral Marketing
- Affiliate Marketing
- Growth
- SaaS
- Attribution
- Partner Programs
- Ai Enterprise Software
apis:
- aid: cello:cello-events-api
  name: Cello Events API
  description: The Events API from Cello — 1 operation(s) for events.
  humanURL: https://docs.cello.so/api-reference/introduction
  baseURL: https://api.cello.so
  tags:
  - Event
  tags_raw:
  - Events
  properties:
  - type: OpenAPI
    url: openapi/cello-events-api-openapi.yml
- aid: cello:cello-new-users-api
  name: Cello New Users API
  description: The New Users API from Cello — 1 operation(s) for new users.
  humanURL: https://docs.cello.so/api-reference/introduction
  baseURL: https://api.cello.so
  tags:
  - New Users
  properties:
  - type: OpenAPI
    url: openapi/cello-new-users-api-openapi.yml
- aid: cello:cello-referral-codes-api
  name: Cello Referral Codes API
  description: The Referral Codes API from Cello — 2 operation(s) for referral codes.
  humanURL: https://docs.cello.so/api-reference/introduction
  baseURL: https://api.cello.so
  tags:
  - Referral Codes
  properties:
  - type: OpenAPI
    url: openapi/cello-referral-codes-api-openapi.yml
- aid: cello:cello-referrers-api
  name: Cello Referrers API
  description: The Referrers API from Cello — 1 operation(s) for referrers.
  humanURL: https://docs.cello.so/api-reference/introduction
  baseURL: https://api.cello.so
  tags:
  - Referrers
  properties:
  - type: OpenAPI
    url: openapi/cello-referrers-api-openapi.yml
- aid: cello:cello-token-api
  name: Cello Token API
  description: The Token API from Cello — 1 operation(s) for token.
  humanURL: https://docs.cello.so/api-reference/introduction
  baseURL: https://api.cello.so
  tags:
  - Token
  properties:
  - type: OpenAPI
    url: openapi/cello-token-api-openapi.yml
common:
- type: Overlay
  url: overlays/cello-openapi-overlay.yaml
- type: DomainSecurity
  url: security/cello-domain-security.yml
- type: AgenticAccess
  url: agentic-access/cello-agentic-access.yml
- type: Authentication
  url: authentication/cello-authentication.yml
- type: DeveloperPortal
  url: https://docs.cello.so
- type: Documentation
  url: https://docs.cello.so
- type: APIReference
  url: https://docs.cello.so/api-reference/introduction
- type: GettingStarted
  url: https://docs.cello.so/integration-overview
- type: Support
  url: https://docs.cello.so/guides/support/faqs
- type: Blog
  url: https://cello.so/resources/
- type: GitHubOrganization
  url: https://github.com/getcello
- type: Pricing
  url: https://cello.so/pricing/
- type: Login
  url: https://portal.cello.so
- type: TermsOfService
  url: https://cello.so/terms-of-service/
- type: PrivacyPolicy
  url: https://cello.so/privacy-policy/
- type: MCPServer
  url: mcp/cello-mcp.yml
- type: LLMsTxt
  url: llms/cello-llms.txt
- type: Packages
  url: packages/cello-packages.yml
- type: SDKs
  url: packages/cello-packages.yml
- type: Components
  url: components/cello-components.yml
- type: Sandbox
  url: sandbox/cello-sandbox.yml
- type: ChangeLog
  url: changelog/cello-changelog.yml
- type: Lifecycle
  url: lifecycle/cello-lifecycle.yml
- type: Conventions
  url: conventions/cello-conventions.yml
- type: ErrorCatalog
  url: errors/cello-problem-types.yml
- type: DataModel
  url: data-model/cello-data-model.yml
- type: Conformance
  url: conformance/cello-conformance.yml
- type: Compliance
  url: https://cello.so/privacy-policy/
- type: AgentSkill
  url: skills/cello-track-referral-conversion.md
- type: AgentSkill
  url: skills/cello-fetch-and-reward-referee.md
- type: AgentSkill
  url: skills/cello-referral-integration.md
- type: AgentCard
  url: a2a/cello-a2a.yml
- type: WellKnown
  url: well-known/cello-well-known.yml
- type: OAuthScopes
  url: scopes/cello-scopes.yml
- type: ToolCrosswalk
  url: mcp/cello-tool-crosswalk.yml
- type: Plans
  url: plans/cello-plans-pricing.yml
- type: RateLimits
  url: rate-limits/cello-rate-limits.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-08-13'
  status: enriched
  artifacts_added: 11
  pass: local-v1