Compstak

CompStak is a commercial real estate (CRE) data platform, founded in 2012, that crowdsources and verifies lease comps, sale comps, loan data, and property data from a network of tens of thousands of brokers and appraisers across US markets. Its products include CompStak One (an all-in-one CRE data platform), CompStak Exchange, CompStak AI, and a contact-sales Data API offering Market Insights, Property Insights, Space Insights, and Property Standardization. CompStak was surfaced as a portfolio company of 500 Global and Canaan Partners and added to the API Evangelist network. Its developer surface is enterprise/contact-sales only — there is no public self-serve developer portal, OpenAPI specification, SDK, or API reference.

Compstak is profiled on the APIs.io network. Tagged areas include Company, Commercial Real Estate, Real Estate Data, CRE, and Lease Comps.

Compstak’s developer surface includes engineering blog, signup flow, and 8 more developer resources.

🌐 Visit website 📡 Source on GitHub

13.4/100 emerging ▬ flat Agent 0/100 human only saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

0 APIs

Company Commercial Real Estate Real Estate Data CRELease CompsSale CompsProperty Data Market Intelligence Data

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 13.4/100 · emerging

Contract Quality 0.0 / 25

Developer Ergonomics 0.5 / 20

Access Clarity 6.8 / 20

Operational Transparency 0.3 / 13

Contract Governance 0.0 / 12

Discoverability 5.7 / 10

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

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

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Security Posture 1

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Compstak Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 2

Portal, sign-up, and the first successful call

SignUp

SignUp

Login

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

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

Other 1

Properties that don't map to a standard resource type

API

API

Source (apis.yml)

aid: compstak
name: Compstak
description: CompStak is a commercial real estate (CRE) data platform, founded in 2012, that crowdsources and verifies lease
  comps, sale comps, loan data, and property data from a network of tens of thousands of brokers and appraisers across US
  markets. Its products include CompStak One (an all-in-one CRE data platform), CompStak Exchange, CompStak AI, and a contact-sales
  Data API offering Market Insights, Property Insights, Space Insights, and Property Standardization. CompStak was surfaced
  as a portfolio company of 500 Global and Canaan Partners and added to the API Evangelist network. Its developer surface
  is enterprise/contact-sales only — there is no public self-serve developer portal, OpenAPI specification, SDK, or API reference.
url: https://raw.githubusercontent.com/api-evangelist/compstak/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- 500-global
- canaan-partners
x-tier: stub
x-tier-reason: portfolio-lead
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
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: '2026-07-18'
image: https://compstak.com/wp-content/uploads/2024/11/big-homepage-image-6-margins-1024x665.png
tags:
- Company
- Commercial Real Estate
- Real Estate Data
- CRE
- Lease Comps
- Sale Comps
- Property Data
- Market Intelligence
- Data
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://compstak.com
- type: API
  url: https://compstak.com/data-api
- type: Blog
  url: https://compstak.com/blog
- type: GitHubOrganization
  url: https://github.com/compstak
- type: SignUp
  url: https://compstak.com/home/get-started
- type: Login
  url: https://enterprise.compstak.com/login
- type: TermsOfService
  url: https://compstak.com/legal#TermsOfUse
- type: PrivacyPolicy
  url: https://compstak.com/legal#PrivacyPolicy
- type: DomainSecurity
  url: security/compstak-domain-security.yml
- type: LLMsTxt
  url: llms/compstak-llms.txt
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

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