Cresta

aid: cresta
name: Cresta
description: 'Cresta (legally Cresta Intelligence, Inc.) is a Palo Alto, California enterprise Customer Experience AI company
  spun out of the Stanford AI Lab and founded in 2017 by Zayd Enam, Tim Shi, and Sebastian Thrun, and led since 2023 by CEO
  Ping Wu, the former co-founder of Google Contact Center AI. The platform unifies human and AI agents for the enterprise
  contact center across voice, chat, email, and SMS, combining real-time agent assist, autonomous omnichannel AI agents, conversation
  intelligence, an AI analyst, a knowledge agent, coaching, a training simulator, and automated quality management, all orchestrated
  through Cresta Opera, a no-code AI orchestration layer, with Cresta Conductor as the developer facing agentic engine for
  building and optimizing AI agents. Cresta runs a multi-model architecture composed of 20+ large and small language models,
  fine-tuned on customer-specific transcripts and synthetic data, with enterprise guardrails, supervisory models, and automated
  pre-release AI agent testing. The AI Agent consumes external tools through API-based function calling and the Model Context
  Protocol; Cresta itself does not publish an MCP server. Voice integrations span Five9, Genesys (Cloud CX and Engage), NICE
  CXone, Amazon Connect, Twilio Flex, Talkdesk, 8x8, Vonage, Gladly, TCN, RingCX, Avaya Infinity, Cisco UCCE/PCCE/UCCX, and
  SIPREC across Oracle, Ribbon, Avaya SBC, and Cisco CUBE via SIP, PSTN transfer, CCaaS native streaming, WebSocket, gRPC,
  and raw RTP. Cresta is privately held at Series D with $280M+ raised from Greylock, Andreessen Horowitz, Sequoia, Tiger
  Global, Coatue, Greenoaks, Lightspeed, Porsche Ventures, World Innovation Lab, and the Qatar Investment Authority, plus
  strategic investors including Genesys, Five9, Accenture, Comcast, Qualcomm, JP Morgan, and Workday Ventures. It is the first
  Customer Experience AI provider to hold ISO/IEC 42001 certification, alongside SOC 2 Type II, ISO 27001, HIPAA, GDPR, TISAX,
  CCPA, and PCI DSS posture. A production API host is live at api.cresta.com — a gRPC-JSON transcoding gateway that answers
  anonymously with a google.rpc.Status error envelope — but the Cresta API and SDK are gated behind a customer / partner engagement:
  there is no public OpenAPI specification, no published API reference or base-path documentation, no public SDK release on
  any package registry, no public pricing, and no developer self-service signup.'
type: Index
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
position: Provider
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/cresta.png
tags:
- AI
- Artificial Intelligence
- Contact Center
- Contact Center AI
- CCaaS
- Customer Experience
- Conversational AI
- Voice AI
- Agent Assist
- Conversation Intelligence
- Knowledge Agent
- Quality Management
- Real-Time Coaching
- After-Call Automation
- Enterprise AI
- MCP
- Customer Experience AI
- AI Agents
- gRPC
- Speech Analytics
- Enterprise Software
url: https://raw.githubusercontent.com/api-evangelist/cresta/refs/heads/main/apis.yml
created: '2026-05-24'
modified: '2026-08-14'
specificationVersion: '0.20'
apis:
- name: Cresta Platform API
  description: 'Cresta''s production API host. https://api.cresta.com resolves and answers anonymously with a gRPC-JSON transcoding
    gateway error envelope ({"code":2,"httpStatus":500,"message":"the requested gRPC method is either not registered, or registered
    with a different HTTP method","status": "UNKNOWN"}), confirming a live grpc-gateway fronting Cresta''s gRPC services.
    Cresta describes it publicly only as "SDKs and APIs to facilitate integrating with Cresta conversation services"; no reference,
    method list, base path, authentication scheme, or OpenAPI specification is published, and developers.cresta.com routes
    prospective integrators to a demo request. Recorded as a confirmed but gated surface — probed, never credentialed.'
  humanURL: https://developers.cresta.com
  baseURL: https://api.cresta.com
  tags:
  - Contact Center AI
  - Conversational AI
  - gRPC
  properties:
  - type: DeveloperPortal
    url: https://developers.cresta.com
  - type: ContactSales
    url: https://cresta.com/request-a-demo
common:
- type: TrustCenter
  url: security/cresta-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/cresta-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/cresta-domain-security.yml
- type: Security
  url: https://cresta.com/trust
- type: Compliance
  url: conformance/cresta-conformance.yml
- type: Conformance
  url: conformance/cresta-conformance.yml
- type: Lifecycle
  url: lifecycle/cresta-lifecycle.yml
- type: StatusPage
  url: https://status.cresta.com
- type: WellKnown
  url: well-known/cresta-well-known.yml
- type: SecurityTxt
  url: well-known/cresta-security.txt
- type: LLMsTxt
  url: llms/cresta-llms.txt
- type: Plans
  url: plans/cresta-plans-pricing.yml
- type: Website
  url: https://cresta.com
- type: DeveloperPortal
  url: https://developers.cresta.com
- type: Portal
  url: https://cresta.com/platform-overview
- type: Documentation
  url: https://docs.cresta.com
- type: HelpCenter
  url: https://docs.cresta.com
- type: Product
  url: https://cresta.com/ai-agent
- type: Product
  url: https://cresta.com/agent-assist
- type: Product
  url: https://cresta.com/conversation-intelligence
- type: Product
  url: https://cresta.com/knowledge-agent
- type: Product
  url: https://cresta.com/quality-management
- type: Company
  url: https://cresta.com/about-us
- type: Careers
  url: https://cresta.com/careers
- type: Blog
  url: https://cresta.com/blog
- type: Newsroom
  url: https://cresta.com/press
- type: Resources
  url: https://cresta.com/resources
- type: Customers
  url: https://cresta.com/customer-stories
- type: TrustCenter
  url: https://cresta.com/trust
- type: PrivacyPolicy
  url: https://cresta.com/legal/privacy-policy
- type: TermsOfService
  url: https://cresta.com/legal/terms-of-service
- type: SLA
  url: https://cresta.com/legal/service-level-agreement
- type: Legal
  url: https://cresta.com/legal
- type: Support
  url: https://cresta.com/contact-us
- type: Login
  url: https://login.cresta.com
- type: Partners
  url: https://cresta.com/partner
- type: Integrations
  url: https://cresta.com/integrations
- type: ResponsibleAI
  url: https://cresta.com/responsible-ai
- type: ContactSales
  url: https://cresta.com/request-a-demo
- type: GitHubOrganization
  url: https://github.com/cresta
- type: LinkedIn
  url: https://www.linkedin.com/company/cresta-inc
- type: Twitter
  url: https://twitter.com/Cresta
- type: YouTube
  url: https://www.youtube.com/@CrestaAI
- type: Integrations
  data:
  - name: Five9
    description: Voice integration with Five9 Intelligent CX Platform via native streaming.
  - name: Genesys Cloud CX
    description: Native real-time voice and digital streaming integration with Genesys Cloud CX.
  - name: Genesys Engage
    description: On-premise / hybrid integration with Genesys Engage.
  - name: NICE CXone
    description: Real-time voice and digital integration with NICE CXone.
  - name: Amazon Connect
    description: Real-time voice integration with Amazon Connect via Kinesis Video Streams.
  - name: Twilio Flex
    description: Real-time voice and digital integration with Twilio Flex via Media Streams.
  - name: Talkdesk
    description: Voice and digital channel integration with Talkdesk.
  - name: 8x8
    description: Voice integration with 8x8 contact center.
  - name: Vonage
    description: Voice integration with Vonage Contact Center.
  - name: Gladly
    description: Digital channel integration with Gladly.
  - name: TCN
    description: Voice integration with TCN cloud contact center.
  - name: RingCX
    description: Voice integration with RingCentral RingCX.
  - name: Avaya Infinity
    description: Voice integration with Avaya Infinity Experience Platform.
  - name: Cisco UCCE / PCCE / UCCX
    description: On-premise Cisco contact center integration via desktop capture and SIP.
  - name: Avaya (on-prem)
    description: On-premise Avaya integration.
  - name: SIPREC
    description: SIPREC recording integration across Oracle, Ribbon, Avaya SBC, and Cisco CUBE.
  - name: Salesforce
    description: CRM integration for customer context and screen pop.
  - name: Model Context Protocol (MCP)
    description: Standardized tool access for AI Agent function calling.
- type: Investors
  data:
  - Greylock
  - Andreessen Horowitz (a16z)
  - Sequoia Capital
  - Tiger Global
  - Accenture
  - Comcast Ventures
  - Five9 (strategic)
  - Genesys (strategic)
  - JP Morgan
  - LG Ventures
  - Qatar Investment Authority
  - Qualcomm Ventures
  - World Innovation Lab
  - Workday Ventures
- type: Features
  data:
  - Cresta AI Agent — autonomous voice, chat, and SMS agents resolving end-to-end across 30+ languages
  - Agent Assist — real-time AI guidance, knowledge surfacing, and next-best-action for live human agents
  - Conversation Intelligence — automated analysis of 100% of customer conversations for insight and revenue surfacing
  - Knowledge Agent — proactive real-time answer retrieval from enterprise knowledge bases
  - Quality Management — automated QA scoring across 100% of contact center conversations
  - Multi-model architecture combining 20+ large and small language models tuned for contact center tasks
  - Fine-tuning on customer-proprietary transcripts plus purpose-built synthetic datasets
  - No-code Discover / Build / Test / Deploy / Optimize lifecycle for AI workflows
  - Agent Operations Center for real-time monitoring, supervision, and intervention
  - Enterprise guardrails, supervisory models, and continuous threat detection
  - Cresta Opera — no-code AI orchestration layer underneath every product
  - Cresta Conductor — developer-facing agentic engine for building, testing, and optimizing AI agents
  - AI Agent consumes external tools via API function calling and MCP (Cresta is an MCP client, not an MCP server)
  - Bidirectional metadata exchange (caller ID, IVR selections, routing data, conversation summaries) during transfers and
    handoffs
  - Voice transport via SIP trunking, PSTN transfer, CCaaS native streaming, WebSocket, gRPC, and raw RTP
  - Pull-mode audio retrieval from cloud storage (e.g., AWS KVS) or direct desktop capture
  - Warm transfer, cold transfer, conference bridge, and multi-party call tracking
  - Shared conversation memory across channels and human ↔ AI handoffs
  - Configurable voice persona — tone, empathy, communication style, pacing, pronunciation
  - ISO/IEC 42001, SOC 2 Type II, ISO 27001, HIPAA, GDPR, TISAX, and CCPA compliance posture
  - Live production API host at api.cresta.com — a gRPC-JSON transcoding gateway, confirmed by anonymous probe
  - Public Atlassian Statuspage with a machine-readable v2 JSON API and RSS incident history
  - RFC 9116 security.txt with HackerOne submission form and PGP key
  - First-party page written for AI assistants at cresta.com/llm-info ("Hey AI, learn about us")
  - Private, gated API and SDK — no public OpenAPI, no public SDK release, no self-service developer signup
  - Help center at docs.cresta.com is robots-disallowed with Content-Signal ai-train=no, search=no, ai-input=no
  sources:
  - https://cresta.com
  - https://cresta.com/platform-overview
  - https://cresta.com/ai-agent
  - https://cresta.com/llm-info
  - https://cresta.com/trust
  - https://status.cresta.com/api/v2/summary.json
  - https://cresta.com/.well-known/security.txt
  - https://cresta.com/blog/the-three-pillars-of-voice-integration-building-hybrid-ai-contact-centers-that-work-with-your-existing-infrastructure
  - https://docs.cresta.com
  - https://developers.cresta.com
  updated: '2026-08-14'
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
x-enrichment:
  date: '2026-08-14'
  status: enriched
  artifacts_added: 10
  pass: local-v1
x-coverage:
  state: covered
  reason: null
  detail: 'Contract discovery beat the previous round''s "no API" finding: api.cresta.com is live and answers anonymously
    with a gRPC-JSON gateway envelope, so the API exists and is gated rather than absent. No machine-readable contract is
    published on any Cresta host, but ten real artifacts were harvested or probed, including a verbatim RFC 9116 security.txt
    and the public Statuspage v2 JSON API.'
  evidence:
  - url: https://api.cresta.com/
    status: 405
  - url: https://cresta.com/.well-known/security.txt
    status: 200
  - url: https://status.cresta.com/api/v2/summary.json
    status: 200
  - url: https://cresta.com/llm-info
    status: 200
  - url: https://developers.cresta.com/
    status: 200
  checked: '2026-08-14'