Firsty

Firsty is an Amsterdam-based eSIM and mobile connectivity provider founded in 2023 that positions internet access as a basic human right. Its consumer app delivers free, ad-supported global data alongside affordable Classic (pay-per-GB) and Unlimited (daily/monthly) plans, plus international calling, across 170+ countries with automatic connection to the best available network and no physical SIM required. Firsty has surpassed one million users and lists partnerships with brands including Uber, Grab, Mastercard, KBC and Belfius. Backed by Speedinvest, it is a consumer travel-connectivity app with no public developer API or programmatic surface at this time.

Firsty is profiled on the APIs.io network. Tagged areas include Company, eSIM, Mobile, Connectivity, and Telecommunications.

Firsty’s developer surface includes pricing, support, engineering blog, and 5 more developer resources.

🌐 Visit website 📡 Source on GitHub

14.4/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5

0 APIs

CompanyeSIMMobileConnectivityTelecommunicationsTravelRoamingDataConsumer

Kin Score

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

Composite quality — 14.4/100 · minimal

Contract Quality 0.0 / 25

Developer Ergonomics 1.3 / 20

Commercial Clarity 6.3 / 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/firsty: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 3

The organization behind the API

Website

Website

About

About

Blog

Blog

Source (apis.yml)

aid: firsty
name: Firsty
description: Firsty is an Amsterdam-based eSIM and mobile connectivity provider founded in 2023 that positions internet access
  as a basic human right. Its consumer app delivers free, ad-supported global data alongside affordable Classic (pay-per-GB)
  and Unlimited (daily/monthly) plans, plus international calling, across 170+ countries with automatic connection to the
  best available network and no physical SIM required. Firsty has surpassed one million users and lists partnerships with
  brands including Uber, Grab, Mastercard, KBC and Belfius. Backed by Speedinvest, it is a consumer travel-connectivity app
  with no public developer API or programmatic surface at this time.
url: https://raw.githubusercontent.com/api-evangelist/firsty/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- speedinvest
x-tier: profiled
x-tier-reason: identity-enriched-no-api
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://firsty.app/press-kit
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- eSIM
- Mobile
- Connectivity
- Telecommunications
- Travel
- Roaming
- Data
- Consumer
apis: []
common:
- type: DomainSecurity
  url: security/firsty-domain-security.yml
- type: Website
  url: https://firsty.app
- type: About
  url: https://firsty.app/about-us
- type: Pricing
  url: https://firsty.app/plans/classic
- type: Support
  url: https://firsty.app/help
- type: Blog
  url: https://firsty.app/the-wanderer
- type: TermsOfService
  url: https://firsty.app/terms-conditions
- type: PrivacyPolicy
  url: https://firsty.app/privacy-policy
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence