Prelay

Prelay was a deal collaboration ("team selling") platform that helped B2B revenue teams coordinate the internal stakeholders behind complex enterprise deals — sales engineers, legal, deal desk, finance, and leadership — inside a shared workspace that plugged into the CRM. Founded 2019 in San Francisco (Y Combinator W20), it was a SaaS application aimed at sales and revenue operations, not a developer/API product. The company has since ceased operations: Y Combinator lists Prelay as Inactive, Crunchbase records it as permanently closed, the github.com/prelay organization was archived on 2025-10-16 with zero public repositories, and as of 2026-08-14 prelay.com and www.prelay.com no longer complete a TLS handshake (the Webflow certificate has been deprovisioned) while app.prelay.com answers 404 for every path. No public developer portal, API reference, OpenAPI/AsyncAPI specification, SDK, MCP server or agent card ever existed, and no api./docs./developers. subdomain resolves. Prelay was surfaced as a portfolio company of General Catalyst and added to the API Evangelist network.

Prelay is profiled on the APIs.io network. Tagged areas include Company, Sales, Revenue Operations, Deal Collaboration, and Team Selling.

🌐 Visit website 📡 Source on GitHub
5.0/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0
0 APIs
CompanySalesRevenue OperationsDeal CollaborationTeam SellingSoftware-as-a-Service

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0
Composite quality — 5.0/100 · minimal
Contract Quality 0.0 / 25
Developer Ergonomics 0.0 / 20
Access Clarity 0.0 / 20
Operational Transparency 0.0 / 13
Contract Governance 0.0 / 12
Discoverability 5.0 / 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.
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/prelay: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Security Posture 1

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

Prelay Domain Security

DNSSEC · DMARC

SECURITY

Resources

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Company 1

The organization behind the API

Website
Website

Source (apis.yml)

apis.yml Raw ↑ 
aid: prelay
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - none
  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
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/prelay.png
name: Prelay
description: 'Prelay was a deal collaboration ("team selling") platform that helped B2B revenue teams coordinate the internal
  stakeholders behind complex enterprise deals — sales engineers, legal, deal desk, finance, and leadership — inside a shared
  workspace that plugged into the CRM. Founded 2019 in San Francisco (Y Combinator W20), it was a SaaS application aimed at
  sales and revenue operations, not a developer/API product. The company has since ceased operations: Y Combinator lists Prelay
  as Inactive, Crunchbase records it as permanently closed, the github.com/prelay organization was archived on 2025-10-16
  with zero public repositories, and as of 2026-08-14 prelay.com and www.prelay.com no longer complete a TLS handshake (the
  Webflow certificate has been deprovisioned) while app.prelay.com answers 404 for every path. No public developer portal,
  API reference, OpenAPI/AsyncAPI specification, SDK, MCP server or agent card ever existed, and no api./docs./developers.
  subdomain resolves. Prelay was surfaced as a portfolio company of General Catalyst and added to the API Evangelist network.'
url: https://raw.githubusercontent.com/api-evangelist/prelay/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- general-catalyst
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-08-14'
tags:
- Company
- Sales
- Revenue Operations
- Deal Collaboration
- Team Selling
- Software-as-a-Service
tags_raw:
- Company
- Sales
- Revenue Operations
- Deal Collaboration
- Team Selling
- SaaS
common:
- type: DomainSecurity
  url: security/prelay-domain-security.yml
- type: Website
  url: https://www.prelay.com
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-08-14'
  status: minimal
  artifacts_added: 2
  pass: local-v1
x-coverage:
  state: none
  reason: defunct
  detail: 'Prelay has shut down — Y Combinator lists the W20 company as Inactive and Crunchbase records it as permanently
    closed — and the shutdown is visible in the infrastructure: prelay.com and www.prelay.com still point at the Webflow edge
    but the TLS certificate has been deprovisioned so no HTTPS request completes a handshake, app.prelay.com answers Google''s
    "Page not found" 404 for every path, and the github.com/prelay organization was archived on 2025-10-16 holding zero public
    repositories.'
  evidence:
  - url: https://www.prelay.com/
    status: 0
  - url: https://prelay.com/.well-known/agent-card.json
    status: 0
  - url: https://app.prelay.com/openapi.json
    status: 404
  - url: https://help.prelay.com/llms.txt
    status: 403
  - url: https://api.github.com/orgs/prelay
    status: 200
  - url: https://www.ycombinator.com/companies/prelay
    status: 200
  checked: '2026-08-14'

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