effx

effx was a San Francisco developer-tools startup, founded in 2018 by Joey Parsons, that built a modern microservice catalog to help engineering teams navigate and operate microservices architectures — tracking service ownership, cataloging services, enforcing service standards, tracking migrations, and supporting incident response. The company raised a $3.9M seed round led by Kleiner Perkins alongside Cowboy Ventures. effx was acquired by Figma in 2021; the product was shut down and the team joined Figma's engineering organization. effx.com is now an acquisition/farewell notice and there is no live API, developer documentation, SDK, or public source surface to enrich.

effx is profiled on the APIs.io network. Tagged areas include Company, Developer Tools, Microservices, Service Catalog, and Developer Productivity.

effx’s developer surface includes engineering blog and 1 more developer resources.

🌐 Visit website 📡 Source on GitHub

7.2/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5

0 APIs

CompanyDeveloper ToolsMicroservicesService CatalogDeveloper ProductivityIncident ResponseAcquired

Kin Score

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

Composite quality — 7.2/100 · minimal

Contract Quality 0.0 / 25

Developer Ergonomics 0.4 / 20

Commercial Clarity 0.0 / 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/effx: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Resources

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: effx
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/effx.png
name: effx
description: effx was a San Francisco developer-tools startup, founded in 2018 by Joey Parsons, that built a modern microservice
  catalog to help engineering teams navigate and operate microservices architectures — tracking service ownership, cataloging
  services, enforcing service standards, tracking migrations, and supporting incident response. The company raised a $3.9M
  seed round led by Kleiner Perkins alongside Cowboy Ventures. effx was acquired by Figma in 2021; the product was shut down
  and the team joined Figma's engineering organization. effx.com is now an acquisition/farewell notice and there is no live
  API, developer documentation, SDK, or public source surface to enrich.
url: https://raw.githubusercontent.com/api-evangelist/effx/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- cowboy-ventures
- kleiner-perkins
x-tier: stub
x-tier-reason: portfolio-lead
x-status: acquired
x-defunct: true
x-founded: '2018'
x-founder: Joey Parsons
x-headquarters: San Francisco, CA, USA
x-acquired-by: figma
x-acquired-year: '2021'
x-funding: Seed $3.9M (Kleiner Perkins led, with Cowboy Ventures)
x-enrichment-note: 'Verified 2026-07-19 via effx.com (acquisition notice) and web search. No live API, docs, SDK, GitHub org,
  well-known, npm, or MCP surface exists post-shutdown. Probes: docs.effx.com/api.effx.com do not resolve; app.effx.com and
  effx.com/help/ 404 or redirect to the farewell page; /.well-known/security.txt and /.well-known/openid-configuration return
  404; no first-party GitHub org.'
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- Developer Tools
- Microservices
- Service Catalog
- Developer Productivity
- Incident Response
- Acquired
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://www.effx.com
- type: Blog
  url: https://medium.com/effx
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence