Copperlane website screenshot

Copperlane

Copperlane is an AI-native mortgage loan origination platform founded in 2025 by Brianna Lin and Athan Zhang and backed by Y Combinator (W26 batch). Its AI agent, Penny, behaves like a real loan officer: it guides borrowers through intake, pulls and reads borrower documents, verifies loan eligibility in real time, answers borrower questions live, and generates Letters of Explanation, delivering cleaner files to human loan officers so they can focus on closing loans instead of chasing paperwork. The San Francisco company raised a $4.1M seed round to modernize a mortgage origination process that remains largely manual. Copperlane is currently a demo-request business application and does not publish a public developer API, SDK, or developer portal.

Copperlane is profiled on the APIs.io network. Tagged areas include Company, Mortgage, Lending, Loan Origination, and Financial Services.

Copperlane’s developer surface includes engineering blog and 5 more developer resources.

🌐 Visit website 📡 Source on GitHub
11.4/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5
0 APIs
CompanyMortgageLendingLoan OriginationFinancial ServicesFintechReal EstateArtificial IntelligenceAgents

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 11.4/100 · minimal
Contract Quality 0.0 / 25
Developer Ergonomics 0.4 / 20
Commercial Clarity 4.2 / 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/copperlane: 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.

Copperlane Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Resources

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Company 3

The organization behind the API

Website
Website
 About
About
 Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: copperlane
name: Copperlane
description: 'Copperlane is an AI-native mortgage loan origination platform founded in 2025 by Brianna Lin and Athan Zhang
  and backed by Y Combinator (W26 batch). Its AI agent, Penny, behaves like a real loan officer: it guides borrowers through
  intake, pulls and reads borrower documents, verifies loan eligibility in real time, answers borrower questions live, and
  generates Letters of Explanation, delivering cleaner files to human loan officers so they can focus on closing loans instead
  of chasing paperwork. The San Francisco company raised a $4.1M seed round to modernize a mortgage origination process that
  remains largely manual. Copperlane is currently a demo-request business application and does not publish a public developer
  API, SDK, or developer portal.'
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://www.copperlane.ai/favicon.ico
url: https://raw.githubusercontent.com/api-evangelist/copperlane/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
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Mortgage
- Lending
- Loan Origination
- Financial Services
- Fintech
- Real Estate
- Artificial Intelligence
- Agents
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://www.copperlane.ai/
- type: About
  url: https://www.copperlane.ai/about
- type: Blog
  url: https://www.copperlane.ai/blog
- type: TermsOfService
  url: https://www.copperlane.ai/terms
- type: PrivacyPolicy
  url: https://www.copperlane.ai/privacy
- type: DomainSecurity
  url: security/copperlane-domain-security.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence