StartEngine

StartEngine is a Los Angeles based online private-market investment platform that lets everyday investors buy equity in startups and pre-IPO companies, and lets founders raise capital under Regulation Crowdfunding, Regulation A+ and Regulation D. The company operates StartEngine Capital, its FINRA-registered funding portal; StartEngine Private, a fund vehicle for later-stage pre-IPO companies; a secondary marketplace for trading eligible private shares; and StartEngine Secure, an SEC-registered transfer agent and cap-table management service sold to issuers on a published monthly plan. StartEngine publishes no public developer API, SDK, webhook catalog or developer portal - its public engineering output is an internal design-system npm scope, agent examples, and Ethereum security-token standards work (the ERC-1450 reference implementation).

StartEngine is profiled on the APIs.io network. Tagged areas include Company, Investing, Crowdfunding, Private Markets, and Capital Markets.

StartEngine’s developer surface includes engineering blog, support, signup flow, pricing, and 11 more developer resources.

🌐 Visit website 📡 Source on GitHub
18.6/100 emerging ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-08-17 · rubric v0.11.0
0 APIs
CompanyInvestingCrowdfundingPrivate MarketsCapital MarketsFinancial ServicesTransfer AgentSecurities

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-17 · rubric v0.11.0
Composite quality — 18.6/100 · emerging
Contract Quality 0.0 / 21
Developer Ergonomics 1.1 / 17
Commercial Clarity 7.6 / 17
Operational Transparency 0.6 / 11
Governance 0.0 / 10
Discoverability 5.8 / 9
Regulatory Posture 3.5 / 15
Agent readiness — 0/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 10
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, 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/startengine: 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.

Startengine Domain Security

TLSv1.2 · HSTS · DMARC

SECURITY

Resources

Get Started 2

Portal, sign-up, and the first successful call

SignUp
SignUp
 Login
Login

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt
LLMsTxt

Build 2

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization
 Packages
Packages

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Operate 2

Status, limits, changes, and where to get help

Support
Support
 ContactUs
ContactUs

Commercial 3

Pricing, plans, and the legal terms of use

Pricing
Pricing
 TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Company 3

The organization behind the API

Website
Website
 About
About
 Blog
Blog

Other 1

Properties that don't map to a standard resource type

SecondaryMarket
SecondaryMarket

Source (apis.yml)

apis.yml Raw ↑ 
aid: startengine
name: StartEngine
description: StartEngine is a Los Angeles based online private-market investment platform that lets everyday investors buy
  equity in startups and pre-IPO companies, and lets founders raise capital under Regulation Crowdfunding, Regulation A+ and
  Regulation D. The company operates StartEngine Capital, its FINRA-registered funding portal; StartEngine Private, a fund
  vehicle for later-stage pre-IPO companies; a secondary marketplace for trading eligible private shares; and StartEngine
  Secure, an SEC-registered transfer agent and cap-table management service sold to issuers on a published monthly plan. StartEngine
  publishes no public developer API, SDK, webhook catalog or developer portal - its public engineering output is an internal
  design-system npm scope, agent examples, and Ethereum security-token standards work (the ERC-1450 reference implementation).
image: https://d17th0s7i8wl11.cloudfront.net/SE_Thumbnail_5d5cb9e21b.png
url: https://raw.githubusercontent.com/api-evangelist/startengine/refs/heads/main/apis.yml
x-type: company
x-source: harvest:secondary-market
specificationVersion: '0.20'
created: '2026-08-05'
modified: '2026-08-05'
tags:
- Company
- Investing
- Crowdfunding
- Private Markets
- Capital Markets
- Financial Services
- Transfer Agent
- Securities
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/startengine-domain-security.yml
- type: Website
  url: https://www.startengine.com/
- type: About
  url: https://www.startengine.com/about
- type: Blog
  url: https://www.startengine.com/blog
- type: Support
  url: https://help.startengine.com/
- type: ContactUs
  url: https://www.startengine.com/contact-us
- type: SignUp
  url: https://user.startengine.com/signup
- type: Login
  url: https://user.startengine.com/
- type: Pricing
  url: https://www.startengine.com/secure
- type: TermsOfService
  url: https://www.startengine.com/terms
- type: PrivacyPolicy
  url: https://www.startengine.com/privacy
- type: GitHubOrganization
  url: https://github.com/StartEngine
- type: SecondaryMarket
  url: https://forgeglobal.com/startengine_stock/
- type: Packages
  url: packages/startengine-packages.yml
- type: LLMsTxt
  url: llms/startengine-llms.txt
x-enrichment:
  date: '2026-08-05'
  status: minimal
  artifacts_added: 4
  pass: local-v1
x-coverage:
  state: none
  reason: no-developer-program
  detail: StartEngine ships an investor app and the StartEngine Secure cap-table product to end users only; api.startengine.com,
    developer.startengine.com and docs.startengine.com all return NXDOMAIN, and www.startengine.com/robots.txt disallows /api
    for every crawler because the only /api path is the site's own internal backend.
  evidence:
  - url: https://www.startengine.com/robots.txt
    status: 200
  - url: https://www.startengine.com/api/openapi.json
    status: 404
  - url: https://www.startengine.com/api-docs
    status: 404
  - url: https://status.startengine.com/
    status: 500
  checked: '2026-08-05'
  note: Every other /.well-known/ and spec path on www.startengine.com answers 202 with an HTML catch-all, and user.startengine.com
    returns an identical SPA shell for all paths; both were disproved with a control probe and recorded in well-known/startengine-well-known.yml.