Cardinal

aid: trycardinal-ai
name: Cardinal
description: 'Cardinal is an AI platform for precision outbound sales — it markets itself as "revenue agents for high-growth
  companies" — built for go-to-market teams that want outbound to run as one engine instead of a stack of disconnected tools.
  Its agents build and refresh account lists from signals, monitor what prospects post and engage with, generate personalized
  snippets, and orchestrate end-to-end email and LinkedIn plays, while capturing inbound from website visitors, product signups
  and ad impressions. The company is a Y Combinator Winter 2026 company founded by Devishi Jha and Jianna Liu, based in San
  Francisco, and names Mintlify, Deepgram, Greptile, Giga and Luminai among its customers. Cardinal moved its primary web
  presence from trycardinal.ai to trycardinal.com during 2026: https://trycardinal.ai/ now HTTP 301s to https://www.trycardinal.com/
  and the former deep pages on the .ai domain (/company, /product) return 404, though the company still runs its customer
  application, its email and its analytics identity on trycardinal.ai. The product is sold as half-software and half-service
  ("we wire into your existing stack and build agents around plays that already work for you"), delivered through a customer
  app at app.trycardinal.ai behind a Stytch login, with a Calendly GTM chat as the only publicly reachable entry point. It
  reads from and writes back to customer CRMs and says it adds a new integration every two weeks, but names none of them publicly
  and publishes no outbound API of its own: across four hosts on two domains this pass found no OpenAPI, GraphQL SDL, AsyncAPI,
  MCP server, agent card, webhook catalog, SDK, CLI, developer portal or documentation site. docs.trycardinal.ai does not
  resolve in DNS, api.trycardinal.ai is a dangling custom domain whose Render origin answers x-render-routing: no-server,
  and every /api/* path on the customer app returns HTTP 401 {"error":"Unauthorized"}.'
url: https://raw.githubusercontent.com/api-evangelist/trycardinal-ai/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- y-combinator
x-tier: stub
x-tier-reason: portfolio-lead
x-domain-migration:
  from: trycardinal.ai
  to: trycardinal.com
  observed: '2026-08-13'
  evidence: https://trycardinal.ai/ HTTP 301 -> https://www.trycardinal.com/
  note: The .ai domain is not abandoned — it still carries the customer application (app.trycardinal.ai), the published contact
    address (team@trycardinal.ai), the Calendly org slug and the reb2b analytics customer_id "trycardinal.ai". Only the marketing
    site moved. The API Evangelist slug trycardinal-ai is retained.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: approval
  trial: false
  try_now: false
  public: false
  label: Requires approval
  confidence: high
  source:
  - https://www.trycardinal.com/enterprise
  - https://calendly.com/trycardinal/gtm-chat
  - https://app.trycardinal.ai/login
  generated: '2026-08-13'
  method: derived
  note: No pricing page, no self-serve signup and no free tier are published anywhere on the site or in its sitemap. Every
    call to action is "Book a demo" (Calendly) or mailto:team@trycardinal.ai, and the application at app.trycardinal.ai answers
    every unauthenticated path with a redirect to a Stytch-backed login.
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-08-13'
image: https://framerusercontent.com/assets/OZUI2MB2pSTkOci3gyWuOUWDoiQ.jpg
tags:
- Company
- Artificial Intelligence
- Sales
- Outbound Sales
- Sales Automation
- Sales Engagement
- Go-To-Market
- Revenue Operations
- AI Agents
- Lead Generation
- Machine-Learning
tags_raw:
- Company
- Artificial Intelligence
- Sales
- Outbound Sales
- Sales Automation
- Sales Engagement
- Go-To-Market
- Revenue Operations
- AI Agents
- Lead Generation
- Machine Learning
apis: []
common:
- type: DomainSecurity
  url: security/trycardinal-ai-domain-security.yml
- type: LLMsTxt
  url: llms/trycardinal-ai-llms.txt
- type: Lifecycle
  url: lifecycle/trycardinal-ai-lifecycle.yml
- type: StatusPage
  url: https://status.trycardinal.ai/
- type: Plans
  url: plans/trycardinal-ai-plans-pricing.yml
- type: RateLimits
  url: rate-limits/trycardinal-ai-rate-limits.yml
- type: Website
  url: https://www.trycardinal.com/
- type: Features
  url: https://www.trycardinal.com/product
- type: Blog
  url: https://www.trycardinal.com/blog
- type: About
  url: https://www.trycardinal.com/team
- type: Login
  url: https://app.trycardinal.ai/login
- type: Contact
  url: https://calendly.com/trycardinal/gtm-chat
- type: Careers
  url: https://www.ycombinator.com/companies/trycardinal-ai/jobs
- type: LinkedIn
  url: https://www.linkedin.com/company/trycardinalai/
- type: Twitter
  url: https://x.com/trycardinalai
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-08-13'
  status: minimal
  artifacts_added: 5
  artifacts_updated: 1
  pass: local-v1
x-coverage:
  state: none
  reason: no-developer-program
  detail: 'Cardinal sells a half-software, half-service outbound sales product delivered through a customer application behind
    a Stytch login, not a developer product: contract discovery across four hosts on two domains found no OpenAPI, GraphQL
    SDL, AsyncAPI, MCP endpoint, agent card, webhook catalog, SDK, CLI or documentation site of any kind, there is no docs
    host to find (docs.trycardinal.ai and docs.trycardinal.com have no DNS record), the company''s own eleven-URL sitemap
    contains no docs, developers, pricing or legal path, and the one API hostname it still publishes (api.trycardinal.ai)
    is a dangling CNAME to a Render service that answers x-render-routing:no-server and presents no TLS certificate — the
    only public place the word "API" appears is as the name of the single component on its status page.'
  evidence:
  - url: https://trycardinal.ai/
    status: 301
  - url: https://www.trycardinal.com/openapi.json
    status: 404
  - url: https://www.trycardinal.com/llms.txt
    status: 404
  - url: https://www.trycardinal.com/sitemap.xml
    status: 200
  - url: https://app.trycardinal.ai/api
    status: 401
  - url: https://app.trycardinal.ai/openapi.json
    status: 404
  - url: https://app.trycardinal.ai/.well-known/agent-card.json
    status: 404
  - url: https://api.trycardinal.ai/
    status: 409
  - url: https://coordinator-api-wmxp.onrender.com/openapi.json
    status: 404
  - url: https://status.trycardinal.ai/api/v2/summary.json
    status: 200
  checked: '2026-08-13'