Sidecar

Sidecar (side.cr) was added to the API Evangelist network as a Union Square Ventures portfolio lead. The side.cr domain today hosts a transportation news and information content platform (self-described as "building the largest transportation news source powered by everyday people"), covering ridesharing, driving, delivery, safety, and automotive topics for riders and drivers. It is a reader-facing editorial site, not a developer platform: as of this enrichment pass it publishes no API, developer portal, documentation, SDKs, OpenAPI, or any /.well-known discovery surface. The name echoes the pioneering peer-to-peer Sidecar ridesharing company that Union Square Ventures backed and that wound down in 2015, but the current content site states no operational or corporate ties to that defunct service. This profile is retained as a company/lead record with no active API surface to enrich.

Sidecar is profiled on the APIs.io network. Tagged areas include Company, Transportation, Ridesharing, Mobility, and Automotive.

Sidecar’s developer surface includes engineering blog and 3 more developer resources.

🌐 Visit website 📡 Source on GitHub
9.3/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5
0 APIs
CompanyTransportationRidesharingMobilityAutomotiveNewsContent Platform

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 9.3/100 · minimal
Contract Quality 0.0 / 25
Developer Ergonomics 0.4 / 20
Commercial Clarity 2.1 / 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/sidecar: 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.

Sidecar Domain Security

TLSv1.3

SECURITY

Resources

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Commercial 1

Pricing, plans, and the legal terms of use

PrivacyPolicy
PrivacyPolicy

Company 2

The organization behind the API

Website
Website
 Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: sidecar
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/sidecar.png
name: Sidecar
description: 'Sidecar (side.cr) was added to the API Evangelist network as a Union Square Ventures portfolio lead. The side.cr
  domain today hosts a transportation news and information content platform (self-described as "building the largest transportation
  news source powered by everyday people"), covering ridesharing, driving, delivery, safety, and automotive topics for riders
  and drivers. It is a reader-facing editorial site, not a developer platform: as of this enrichment pass it publishes no
  API, developer portal, documentation, SDKs, OpenAPI, or any /.well-known discovery surface. The name echoes the pioneering
  peer-to-peer Sidecar ridesharing company that Union Square Ventures backed and that wound down in 2015, but the current
  content site states no operational or corporate ties to that defunct service. This profile is retained as a company/lead
  record with no active API surface to enrich.'
url: https://raw.githubusercontent.com/api-evangelist/sidecar/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- union-square-ventures
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Company
- Transportation
- Ridesharing
- Mobility
- Automotive
- News
- Content Platform
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/sidecar-domain-security.yml
- type: Website
  url: https://side.cr
- type: Blog
  url: https://www.side.cr/blog/
- type: PrivacyPolicy
  url: https://www.side.cr/policies/privacy-policy/
x-enrichment:
  date: '2026-07-21'
  status: minimal
  artifacts_added: 1
  pass: local-v1