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

8.9/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-08-20 · rubric v0.12.0

0 APIs

Company PropTech Real-Estate Brokerage Transaction Management Real Estate Technology Agents

Kin Score

Kin Score How this is scored →
scored 2026-08-20 · rubric v0.12.0

Composite quality — 8.9/100 · minimal

Contract Quality 0.0 / 21

Developer Ergonomics 1.2 / 17

Access Clarity 3.6 / 17

Operational Transparency 0.0 / 11

Contract Governance 0.0 / 10

Discoverability 4.3 / 9

Regulatory Posture 3.5 / 15

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

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

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Regulatory Posture applies to this provider. Its tags matched the Securities & Market Data regime (on an ambiguous tag, where no other regime matched), so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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: '0.23'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Company
- PropTech
- Real-Estate
- Brokerage
- Transaction Management
- Real Estate Technology
- Agents
tags_raw:
- 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