Side

Side is a technology-powered residential real estate brokerage platform that partners with top-producing agents, teams, and independent brokers to help them launch and grow their own branded brokerage companies without the time, cost, or risk of operating a traditional brokerage. Side provides back-office operations, compliance, transaction management, marketing, and a proprietary Side App that streamlines and automates real estate transactions. Founded in San Francisco, Side is backed by ICONIQ Capital, Matrix Partners, Sapphire Ventures, and Trinity Ventures. Side runs a private, authenticated internal API (api.side.com/v1) that powers its app but publishes no public developer program, SDKs, or API documentation.

Side is profiled on the APIs.io network. Tagged areas include Company, Proptech, Real Estate, Brokerage, and Transaction Management.

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

🌐 Visit website 📡 Source on GitHub

15.0/100 emerging ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5

0 APIs

CompanyProptechReal EstateBrokerageTransaction ManagementReal Estate TechnologyAgents

Kin Score

Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5

Composite quality — 15.0/100 · emerging

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/side: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

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 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: side
name: Side
description: Side is a technology-powered residential real estate brokerage platform that partners with top-producing agents,
  teams, and independent brokers to help them launch and grow their own branded brokerage companies without the time, cost,
  or risk of operating a traditional brokerage. Side provides back-office operations, compliance, transaction management,
  marketing, and a proprietary Side App that streamlines and automates real estate transactions. Founded in San Francisco,
  Side is backed by ICONIQ Capital, Matrix Partners, Sapphire Ventures, and Trinity Ventures. Side runs a private, authenticated
  internal API (api.side.com/v1) that powers its app but publishes no public developer program, SDKs, or API documentation.
url: https://raw.githubusercontent.com/api-evangelist/side/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- iconiq-capital
- matrix-partners
- sapphire-ventures
- trinity-ventures
x-tier: stub
x-tier-reason: portfolio-lead
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Company
- Proptech
- Real Estate
- Brokerage
- Transaction Management
- Real Estate Technology
- Agents
image: https://www.side.com/wp-content/uploads/2022/12/Homepage-Website-Preview-Image-2.jpg
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://www.side.com/
- type: Blog
  url: https://www.side.com/blog/
- type: Support
  url: https://www.side.com/contact-us/
- type: TermsOfService
  url: https://www.side.com/terms-of-service/
- type: PrivacyPolicy
  url: https://www.side.com/privacy-policy/
- type: DomainSecurity
  url: security/side-domain-security.yml
x-enrichment:
  date: '2026-07-21'
  status: minimal
  artifacts_added: 1
  pass: local-v1