Cresta
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.
Limited machine-readable signal and partial portal coverage — documentation a human can read, but little a machine or agent can consume without scraping.
API Evangelist profiles Cresta the way a machine reads it — 51 machine-readable artifacts across 1 API, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Cresta scores 30.1/100 (thin), with a separate agent-readiness read of 3/100 (human only). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance. Every facet and dimension name is a link: it opens that measurement's page on APIs.io, where the rating runs across the whole catalog — the exact checks that feed it, how every profiled provider distributes on it, and who is at the top of it.
Kin Score
How this is scored →scored 2026-09-08 · rubric v0.20.0
Put this on your own site. The badge is drawn live from Cresta's current Kin Score — paste it once and it updates itself every time the score is recomputed. It follows your visitor's light or dark setting, and it links back here so anyone who sees it can read the full breakdown.
<!-- Kin Score · API Evangelist -->
<a href="https://providers.apievangelist.com/providers/cresta/"
title="Cresta on API Evangelist — API profile and Kin Score">
<img src="https://apis.io/badge/cresta.svg"
alt="Cresta Kin Score — API readiness rating by API Evangelist" width="150" height="150" loading="lazy">
</a>[](https://providers.apievangelist.com/providers/cresta/)<!-- Kin Score · API Evangelist -->
<a href="https://providers.apievangelist.com/providers/cresta/"
title="Cresta on API Evangelist — API profile and Kin Score">
<img src="https://apis.io/badge/cresta/card.svg"
alt="Cresta Kin Score — API readiness rating by API Evangelist" width="340" height="120" loading="lazy">
</a>More shapes, themes and sizes → · Score as JSON · How badges work
How we profile Cresta
Each block below is one kind of artifact we hold for Cresta. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 1
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
Individual APIs this provider publishes, each with its own machine-readable definition.
Cresta Platform API
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":"...
Pricing Plans 1
Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the things the Kin Score reads for access clarity — renamed from commercial clarity in rubric 0.12, because a free statutory interface has access terms and no commercial ones.
Published pricing tiers and plan structures.
Cresta Plans Pricing
PLANSRate Limits 1
Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.
Documented rate limits and quota policies.
Cresta Rate Limits
RATE LIMITSFeatures 26
The notable capabilities this provider advertises, captured as structured features so they can be searched and compared instead of read one landing page at a time.
Notable capabilities this provider offers.
Scroll within the panel for all 26 ·
Semantic Vocabularies 1
JSON-LD contexts give the data shared meaning across APIs. We profile them because semantics are what let a machine reconcile 'customer' here with 'customer' somewhere else.
JSON-LD contexts and semantic vocabularies used across these APIs.
Cresta Context
JSON-LDSecurity Posture 3
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Cresta Trust Center
ISO/IEC 42001, SOC 2 Type II, ISO 27001, PCI DSS, HIPAA, GDPR, TISAX, CCPA
SECURITYIntegrations 18
Pre-built integrations with other platforms tell you where this provider already fits in a stack.
Pre-built integrations with other platforms and tools.
Five9
Voice integration with Five9 Intelligent CX Platform via native streaming.
Genesys Cloud CX
Native real-time voice and digital streaming integration with Genesys Cloud CX.
Genesys Engage
On-premise / hybrid integration with Genesys Engage.
NICE CXone
Real-time voice and digital integration with NICE CXone.
Amazon Connect
Real-time voice integration with Amazon Connect via Kinesis Video Streams.
Twilio Flex
Real-time voice and digital integration with Twilio Flex via Media Streams.
Talkdesk
Voice and digital channel integration with Talkdesk.
8x8
Voice integration with 8x8 contact center.
Vonage
Voice integration with Vonage Contact Center.
Gladly
Digital channel integration with Gladly.
TCN
Voice integration with TCN cloud contact center.
RingCX
Voice integration with RingCentral RingCX.
Avaya Infinity
Voice integration with Avaya Infinity Experience Platform.
Cisco UCCE / PCCE / UCCX
On-premise Cisco contact center integration via desktop capture and SIP.
Avaya (on-prem)
On-premise Avaya integration.
SIPREC
SIPREC recording integration across Oracle, Ribbon, Avaya SBC, and Cisco CUBE.
Salesforce
CRM integration for customer context and screen pop.
Model Context Protocol (MCP)
Standardized tool access for AI Agent function calling.
Scroll within the panel for all 18 ·
Resources
Every other property we hold for Cresta — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Get Started 3
Portal, sign-up, and the first successful call
Documentation 1
Reference material describing how the API behaves
Agent Surfaces 2
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 2
Pagination, idempotency, versioning, errors, and events
Build 1
SDKs, sample code, and the tooling you integrate with
Access & Security 7
Authentication, authorization, and security posture
Scroll within the panel for all 7 ·
Learn 1
Tutorials, courses, talks, and written guidance
Operate 5
Status, limits, changes, and where to get help
Commercial 4
Pricing, plans, and the legal terms of use
Company 8
The organization behind the API
Scroll within the panel for all 8 ·
Other 9
Properties that don't map to a standard resource type
Scroll within the panel for all 9 ·
← All providers · Data indexed from github.com/api-evangelist/cresta · machine-readable index on apis.io
This is an independent, third-party profile of Cresta, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.
Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.
info@apievangelist.com
·
Read the full data-sourcing policy →
On a security or compliance team? Put security in the subject line and
you will get a person, not a form — we will tell you exactly which public URLs this profile was built from.