Talko

Talko was a mobile business-communications startup founded by former Microsoft CTO Ray Ozzie and backed by a16z. Launched in September 2014, its app let mobile teams call, text, and exchange voice and video messages, recording live conversations with in-call bookmarks, tagging, and asynchronous voice follow-ups. Microsoft acquired the company in December 2015 to bolster Skype, and the Talko service was fully shut down by March 2016. The company is defunct with no live developer platform, website, or API surface; it remains in the API Evangelist network as an a16z portfolio record.

Talko is profiled on the APIs.io network. Tagged areas include Company, Communications, Messaging, Voice, and Mobile.

🌐 Visit website 📡 Source on GitHub
6.8/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5
0 APIs
CompanyCommunicationsMessagingVoiceMobileCollaborationDefunctAcquired

Kin Score

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scored 2026-07-27 · rubric v0.5
Composite quality — 6.8/100 · minimal
Contract Quality 0.0 / 25
Developer Ergonomics 0.0 / 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
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Source (apis.yml)

apis.yml Raw ↑ 
aid: talko
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/talko.png
name: Talko
description: Talko was a mobile business-communications startup founded by former Microsoft CTO Ray Ozzie and backed by a16z.
  Launched in September 2014, its app let mobile teams call, text, and exchange voice and video messages, recording live conversations
  with in-call bookmarks, tagging, and asynchronous voice follow-ups. Microsoft acquired the company in December 2015 to bolster
  Skype, and the Talko service was fully shut down by March 2016. The company is defunct with no live developer platform,
  website, or API surface; it remains in the API Evangelist network as an a16z portfolio record.
url: https://raw.githubusercontent.com/api-evangelist/talko/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- a16z
x-tier: stub
x-tier-reason: portfolio-lead
x-status: defunct
x-acquired-by: Microsoft
x-acquired-date: '2015-12-21'
x-shutdown-date: 2016-03
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Company
- Communications
- Messaging
- Voice
- Mobile
- Collaboration
- Defunct
- Acquired
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-21'
  status: nochange
  artifacts_added: 0
  pass: local-v1