Proportunity

Proportunity is a London-based proptech/fintech mortgage lender, founded in 2016 by Vadim Toader and Stefan Boronea, that helps first-time buyers get onto the property ladder with a shared-equity loan. The Proportunity Loan supplements a buyer's deposit and can boost purchasing power by up to GBP 150,000, letting buyers secure a home with as little as a 5% deposit on any property on the market (not just new-builds). The company uses machine-learning models to forecast house prices and identify fair-valued homes in high-growth areas to reduce financing risk. Proportunity is authorised and regulated by the UK Financial Conduct Authority (FRN 716565). It was surfaced as a portfolio company of Anthemis and added to the API Evangelist network; enrichment found no public developer/API surface (consumer-facing product only).

Proportunity is profiled on the APIs.io network. Tagged areas include Company, Fintech, Proptech, Mortgage, and Real Estate.

Proportunity’s developer surface includes engineering blog, support, and 4 more developer resources.

🌐 Visit website 📡 Source on GitHub
12.3/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5
0 APIs
CompanyFintechProptechMortgageReal EstateLendingHome OwnershipMachine LearningUnited Kingdom

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 12.3/100 · minimal
Contract Quality 0.0 / 25
Developer Ergonomics 1.3 / 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/proportunity: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Resources

Operate 1

Status, limits, changes, and where to get help

Support
Support

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: proportunity
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://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/proportunity.png
name: Proportunity
description: Proportunity is a London-based proptech/fintech mortgage lender, founded in 2016 by Vadim Toader and Stefan Boronea,
  that helps first-time buyers get onto the property ladder with a shared-equity loan. The Proportunity Loan supplements a
  buyer's deposit and can boost purchasing power by up to GBP 150,000, letting buyers secure a home with as little as a 5%
  deposit on any property on the market (not just new-builds). The company uses machine-learning models to forecast house
  prices and identify fair-valued homes in high-growth areas to reduce financing risk. Proportunity is authorised and regulated
  by the UK Financial Conduct Authority (FRN 716565). It was surfaced as a portfolio company of Anthemis and added to the
  API Evangelist network; enrichment found no public developer/API surface (consumer-facing product only).
url: https://raw.githubusercontent.com/api-evangelist/proportunity/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- anthemis
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-20'
tags:
- Company
- Fintech
- Proptech
- Mortgage
- Real Estate
- Lending
- Home Ownership
- Machine Learning
- United Kingdom
apis: []
common:
- type: Website
  url: https://www.proportunity.com/
- type: About
  url: https://www.proportunity.com/about
- type: Blog
  url: https://www.proportunity.com/blog
- type: Support
  url: https://www.proportunity.com/contact
- type: TermsOfService
  url: https://www.proportunity.com/terms-and-conditions
- type: PrivacyPolicy
  url: https://www.proportunity.com/privacy-policy
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-20'
  status: minimal
  artifacts_added: 0
  pass: local-v1