Curio Labs

Curio (curio.io), operated by Curio Labs, was a London-based audio-journalism subscription app founded in 2016 by Govind Balakrishnan and Srikant Chakravarti. It turned articles from premium publishers into professionally narrated audio and later added AI-generated personalized episodes. Backed by 500 Global (formerly 500 Startups), EarlyBird, Draper Esprit, Cherry Ventures and Horizons Ventures, it raised over $15M before the founders wound the company down after eight years, citing AI and big-tech competition; they have since moved on to a new venture (Gibran). Enrichment probe finds no public API, developer portal, documentation, SDKs, or OpenAPI surface — curio.io now serves a closure/landing page only.

Curio Labs is profiled on the APIs.io network. Tagged areas include Company, Audio, Journalism, Media, and Podcasts.

🌐 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

Company Audio Journalism Media Podcasts Subscription Consumer App Defunct

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.

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Security Posture 1

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

Curio Labs Domain Security

TLSv1.3

SECURITY

Resources

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Company 1

The organization behind the API

Website

Website

Source (apis.yml)

aid: curio-labs
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/curio-labs.png
name: Curio Labs
description: Curio (curio.io), operated by Curio Labs, was a London-based audio-journalism subscription app founded in 2016
  by Govind Balakrishnan and Srikant Chakravarti. It turned articles from premium publishers into professionally narrated
  audio and later added AI-generated personalized episodes. Backed by 500 Global (formerly 500 Startups), EarlyBird, Draper
  Esprit, Cherry Ventures and Horizons Ventures, it raised over $15M before the founders wound the company down after eight
  years, citing AI and big-tech competition; they have since moved on to a new venture (Gibran). Enrichment probe finds no
  public API, developer portal, documentation, SDKs, or OpenAPI surface — curio.io now serves a closure/landing page only.
url: https://raw.githubusercontent.com/api-evangelist/curio-labs/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- 500-global
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Audio
- Journalism
- Media
- Podcasts
- Subscription
- Consumer App
- Defunct
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/curio-labs-domain-security.yml
- type: Website
  url: https://curio.io
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

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