Crescendo

Crescendo is an AI-native customer experience (CX) platform that unifies AI agents for chat, voice, email, and messaging with quality assurance, workforce management, and business insights. The Crescendo Platform API (OpenAPI 3.1) is a tenant-scoped HTTP API for provisioning tenant configuration and documents, exporting assistant and voice-of-customer (VOC) conversations for reporting with cursor pagination, uploading audio recordings for asynchronous VOC processing, and driving assistants through a hosted Model Context Protocol (MCP) bots server over Streamable HTTP. Authentication is a tenant-scoped bearer API key. Crescendo is backed by General Catalyst and Trinity Ventures.

Crescendo publishes 5 APIs on the APIs.io network, including MCP API, Provisioning API, Reporting API, and 2 more. Tagged areas include Company, Customer Experience, Customer-Support, Artificial Intelligence, and AI Agents.

Crescendo’s developer surface includes documentation, API reference, quickstart, engineering blog, support, authentication, and 16 more developer resources.

🌐 Visit website 📡 Source on GitHub

39.9/100 developing ▬ flat Agent 47/100 agent ready Full breakdown ↓
scored 2026-08-20 · rubric v0.12.0

AccessSelf serve

5 APIs 1 MCP Servers

CompanyCustomer ExperienceCustomer-SupportArtificial IntelligenceAI AgentsContact CenterConversational AIVoice of CustomerMCP

Kin Score

Kin Score How this is scored →
scored 2026-08-20 · rubric v0.12.0

Composite quality — 39.9/100 · developing

Contract Quality 13.7 / 25

Developer Ergonomics 11.8 / 20

Access Clarity 4.2 / 20

Operational Transparency 0.0 / 13

Contract Governance 2.0 / 12

Discoverability 8.2 / 10

Agent readiness — 47/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 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/crescendo: 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 5

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

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

Get Started 2

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

Quickstart

Quickstart

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

MCPServer

AgenticAccess

AgentSkill

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

Conformance

Lifecycle

DataModel

Components

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Blog

Blog

Website

Website

Other 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

aid: crescendo
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/crescendo.png
name: Crescendo
description: Crescendo is an AI-native customer experience (CX) platform that unifies AI agents for chat, voice, email, and
  messaging with quality assurance, workforce management, and business insights. The Crescendo Platform API (OpenAPI 3.1)
  is a tenant-scoped HTTP API for provisioning tenant configuration and documents, exporting assistant and voice-of-customer
  (VOC) conversations for reporting with cursor pagination, uploading audio recordings for asynchronous VOC processing, and
  driving assistants through a hosted Model Context Protocol (MCP) bots server over Streamable HTTP. Authentication is a tenant-scoped
  bearer API key. Crescendo is backed by General Catalyst and Trinity Ventures.
url: https://raw.githubusercontent.com/api-evangelist/crescendo/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- general-catalyst
- trinity-ventures
x-tier: enriched
x-tier-reason: has-public-api
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Customer Experience
- Customer-Support
- Artificial Intelligence
- AI Agents
- Contact Center
- Conversational AI
- Voice of Customer
- MCP
tags_raw:
- Company
- Customer Experience
- Customer Support
- Artificial Intelligence
- AI Agents
- Contact Center
- Conversational AI
- Voice of Customer
- MCP
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
apis:
- aid: crescendo:crescendo-mcp-api
  name: Crescendo MCP API
  description: Model Context Protocol (MCP) endpoints.
  humanURL: https://docs.crescendo.ai/api-reference/introduction
  baseURL: https://platform.crescendo.ai
  tags:
  - MCP
  properties:
  - type: OpenAPI
    url: openapi/crescendo-mcp-api-openapi.yml
- aid: crescendo:crescendo-provisioning-api
  name: Crescendo Provisioning API
  description: Tenant-scoped provisioning resources.
  humanURL: https://docs.crescendo.ai/api-reference/introduction
  baseURL: https://platform.crescendo.ai
  tags:
  - Provisioning
  properties:
  - type: OpenAPI
    url: openapi/crescendo-provisioning-api-openapi.yml
- aid: crescendo:crescendo-reporting-api
  name: Crescendo Reporting API
  description: Reporting-friendly exports (cursor pagination).
  humanURL: https://docs.crescendo.ai/api-reference/introduction
  baseURL: https://platform.crescendo.ai
  tags:
  - Reporting
  properties:
  - type: OpenAPI
    url: openapi/crescendo-reporting-api-openapi.yml
- aid: crescendo:crescendo-service-api
  name: Crescendo Service API
  description: Service metadata and health.
  humanURL: https://docs.crescendo.ai/api-reference/introduction
  baseURL: https://platform.crescendo.ai
  tags:
  - Service
  properties:
  - type: OpenAPI
    url: openapi/crescendo-service-api-openapi.yml
- aid: crescendo:crescendo-voc-api
  name: Crescendo VOC API
  description: Upload recordings for VOC processing.
  humanURL: https://docs.crescendo.ai/api-reference/introduction
  baseURL: https://platform.crescendo.ai
  tags:
  - VOC
  properties:
  - type: OpenAPI
    url: openapi/crescendo-voc-api-openapi.yml
common:
- type: Overlay
  url: overlays/crescendo-platform-overlay.yaml
- type: Documentation
  url: https://docs.crescendo.ai
- type: DeveloperPortal
  url: https://docs.crescendo.ai
- type: APIReference
  url: https://docs.crescendo.ai/api-reference/introduction
- type: Quickstart
  url: https://docs.crescendo.ai/quickstart
- type: LLMsTxt
  url: llms/crescendo-llms.txt
- type: Blog
  url: https://www.crescendo.ai/blog
- type: Support
  url: https://www.crescendo.ai/contact
- type: TermsOfService
  url: https://crescendo.ai/policies/website-terms-of-use
- type: PrivacyPolicy
  url: https://www.crescendo.ai/policies/privacy
- type: Website
  url: https://www.crescendo.ai
- type: MCPServer
  url: mcp/crescendo-mcp.yml
- type: Authentication
  url: authentication/crescendo-authentication.yml
- type: AgenticAccess
  url: agentic-access/crescendo-agentic-access.yml
- type: DomainSecurity
  url: security/crescendo-domain-security.yml
- type: Conventions
  url: conventions/crescendo-conventions.yml
- type: ErrorCatalog
  url: errors/crescendo-problem-types.yml
- type: Conformance
  url: conformance/crescendo-conformance.yml
- type: Lifecycle
  url: lifecycle/crescendo-lifecycle.yml
- type: DataModel
  url: data-model/crescendo-data-model.yml
- type: Components
  url: components/crescendo-components.yml
- type: AgentSkill
  url: skills/_index.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

Crescendo

Kin Score

APIs 5

Crescendo MCP API

Crescendo Provisioning API

Crescendo Reporting API

Crescendo Service API

Crescendo VOC API

Open Collections 6

API Collection

Crescendo Platform MCP API

Crescendo Platform MCP Provisioning API

Crescendo Platform MCP Reporting API

Crescendo Platform MCP Service API

Crescendo Platform MCP VOC API

MCP Servers 1

Crescendo MCP Server

Security Posture 2

Crescendo Authentication

Crescendo Domain Security

Agentic Access 1

Crescendo Agentic Access

Resources