AfterHour

AfterHour is a social copy-trading and investing community for retail investors, founded in 2022 and headquartered in San Francisco. The mobile app lets verified traders connect their real brokerage accounts and share live, proven positions — more than $300M in live trades every day — so members can follow top traders, copy trades, discuss tickers in real-time stock chat rooms, receive alerts, and track their own portfolios. AfterHour is backed by Founders Fund and General Catalyst. This provider was surfaced as a General Catalyst portfolio company; it publishes a consumer app and marketing site but no public developer API at this time.

AfterHour is profiled on the APIs.io network. Tagged areas include Company, Consumer, Fintech, Social Trading, and Investing.

AfterHour’s developer surface includes engineering blog, support, signup flow, and 4 more developer resources.

🌐 Visit website 📡 Source on GitHub

17.2/100 emerging ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5

0 APIs

CompanyConsumerFintechSocial TradingInvestingStock MarketCommunityBrokerageMobile App

Kin Score

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

Composite quality — 17.2/100 · emerging

Contract Quality 0.0 / 25

Developer Ergonomics 1.3 / 20

Commercial Clarity 6.8 / 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/afterhour: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Get Started 1

Portal, sign-up, and the first successful call

SignUp

SignUp

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: afterhour
name: AfterHour
description: AfterHour is a social copy-trading and investing community for retail investors, founded in 2022 and headquartered
  in San Francisco. The mobile app lets verified traders connect their real brokerage accounts and share live, proven positions
  — more than $300M in live trades every day — so members can follow top traders, copy trades, discuss tickers in real-time
  stock chat rooms, receive alerts, and track their own portfolios. AfterHour is backed by Founders Fund and General Catalyst.
  This provider was surfaced as a General Catalyst portfolio company; it publishes a consumer app and marketing site but no
  public developer API at this time.
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://cdn.prod.website-files.com/65d857072c79296aeb081345/6668a2a24a3b13cf6d05fdff_afterhour.jpeg
url: https://raw.githubusercontent.com/api-evangelist/afterhour/refs/heads/main/apis.yml
x-type: company
x-source: general-catalyst-portfolio
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-17'
tags:
- Company
- Consumer
- Fintech
- Social Trading
- Investing
- Stock Market
- Community
- Brokerage
- Mobile App
apis: []
common:
- type: Website
  url: https://www.afterhour.com/
- type: Blog
  url: https://www.afterhour.com/blog
- type: TermsOfService
  url: https://www.afterhour.com/terms
- type: PrivacyPolicy
  url: https://www.afterhour.com/privacy
- type: Support
  url: https://discord.gg/afterhour-lounge-970246105319239690
- type: SignUp
  url: https://apps.apple.com/app/id1640766056
- type: DomainSecurity
  url: security/afterhour-domain-security.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence