Cardinal

Cardinal (trycardinal.ai) is an AI platform for precision outbound sales, built for fast-growing go-to-market teams that want outbound to function like a real engine rather than a collection of disconnected tools and experiments. The company is a Y Combinator-backed startup; its public presence today is a marketing site (product, company, and customers pages plus archived engineering posts) with a waitlist for access. No public API, developer portal, or documentation surface has been published yet, so this profile captures verified company identity while the developer program is still forming.

Cardinal is profiled on the APIs.io network. Tagged areas include Company, Artificial Intelligence, Sales, Outbound Sales, and Sales Automation.

Cardinal’s developer surface includes signup flow and 2 more developer resources.

🌐 Visit website 📡 Source on GitHub
9.4/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5
AccessApproval
0 APIs
CompanyArtificial IntelligenceSalesOutbound SalesSales AutomationGo-To-MarketMachine Learning

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 9.4/100 · minimal
Contract Quality 0.0 / 25
Developer Ergonomics 0.0 / 20
Commercial Clarity 2.6 / 20
Operational Transparency 0.0 / 13
Governance 0.0 / 12
Discoverability 6.8 / 10
Agent readiness — 0/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 15
MCP Server 0 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
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/trycardinal-ai: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Security Posture 1

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Trycardinal Ai Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

SignUp
SignUp

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Company 1

The organization behind the API

Website
Website

Source (apis.yml)

apis.yml Raw ↑ 
aid: trycardinal-ai
name: Cardinal
description: Cardinal (trycardinal.ai) is an AI platform for precision outbound sales, built for fast-growing go-to-market
  teams that want outbound to function like a real engine rather than a collection of disconnected tools and experiments.
  The company is a Y Combinator-backed startup; its public presence today is a marketing site (product, company, and customers
  pages plus archived engineering posts) with a waitlist for access. No public API, developer portal, or documentation surface
  has been published yet, so this profile captures verified company identity while the developer program is still forming.
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
accessModel:
  pricing: unknown
  onboarding: approval
  trial: false
  try_now: false
  public: false
  label: Requires approval
  confidence: medium
  source: []
  generated: '2026-07-22'
  method: derived
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-21'
image: https://framerusercontent.com/images/Wzf0tACVAWtjIXAt0DQI1Rz8ko.jpg
tags:
- Company
- Artificial Intelligence
- Sales
- Outbound Sales
- Sales Automation
- Go-To-Market
- Machine Learning
apis: []
common:
- type: DomainSecurity
  url: security/trycardinal-ai-domain-security.yml
- type: Website
  url: https://trycardinal.ai
- type: SignUp
  url: https://tally.so/r/5BzXOo
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 1
  pass: local-v1