esimker

esimker provides prepaid mobile data eSIMs for travelers in 38 destinations worldwide. Users can purchase data plans with a credit card and receive a QR code for instant activation. The service emphasizes flexibility, no‑contract plans, and multi‑language support, catering to international travelers seeking reliable connectivity without roaming fees.

esimker publishes 12 API contracts indexed on the APIs.io network, including Account API, Blog API, Catalog API, and 9 more. Tagged areas include Travel, Mobile, eSIM, Prepaid, and International.

The esimker catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

esimker’s developer surface includes authentication, documentation, engineering blog, API reference, and 18 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

36.8/100 thin Agent 26/100 agent aware Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

1 published contract

Travel Mobile eSIM Prepaid International

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 36.8/100 · thin

Contract Quality 11.2 / 21

Developer Ergonomics 5.3 / 17

Access Clarity 4.7 / 17

Operational Transparency 1.0 / 11

Contract Governance 2.2 / 10

Discoverability 5.6 / 9

Regulatory Posture 3.7 / 15

Agent readiness — 26/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 8 / 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

Pagination 0 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

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.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented) Ask about this →
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link Ask about this →
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document Ask about this →
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented) Ask about this →

9 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Access Clarity scores 27.7 — up to +14.5 composite points Ask about this →
Developer Ergonomics scores 31.0 — up to +13.8 composite points Ask about this →
Contract Quality scores 52.6 — up to +11.9 composite points Ask about this →

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Not sure how this applies to your stack? Ask about any one item. Kin Lane reads every question, looks at your profile and your situation, and replies with what a fix would take — scoped to that one area, priced up front, yours whether you ship it or not. Ask a question →

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 the provider profile at artifacts.apis.io/esimker-com/apis.yml: open an issue on github.com/api-evangelist/esimker-com to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

OpenAPI

measured — observed by APIs.io (published)

APIs 12

Individual APIs this provider publishes, each with its own machine-readable definition.

esimker Account API

The account API from esimker — 24 operation(s) for account.

esimker Blog API

The blog API from esimker — 2 operation(s) for blog.

esimker Catalog API

The catalog API from esimker — 2 operation(s) for catalog.

esimker Orders API

The orders API from esimker — 7 operation(s) for orders.

esimker Pages API

The pages API from esimker — 1 operation(s) for pages.

esimker Rates API

The rates API from esimker — 1 operation(s) for rates.

esimker Reseller API

The reseller API from esimker — 4 operation(s) for reseller.

esimker Seo API

The seo API from esimker — 1 operation(s) for seo.

esimker Support API

The support API from esimker — 1 operation(s) for support.

esimker Telegram API

The telegram API from esimker — 3 operation(s) for telegram.

esimker Topups API

The topups API from esimker — 2 operation(s) for topups.

esimker Wallet API

The wallet API from esimker — 4 operation(s) for wallet.

Scroll for all 12

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Esimker Com Context

29 classes · 41 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

esimker API Rules

39 rules · 34 error-severity 4 warn-severity 1 info-severity

SPECTRAL

JSON Schema 7

Standalone JSON Schema definitions for this provider's data models.

ChatWalletSecret

2 properties

JSON SCHEMA

CreateOrderIn

11 properties

JSON SCHEMA

DepositIn

5 properties

JSON SCHEMA

DepositOut

3 properties

JSON SCHEMA

RegisterIn

3 properties

JSON SCHEMA

ResellerOrderIn

3 properties

JSON SCHEMA

TicketIn

6 properties

JSON SCHEMA

Scroll for all 7

Security Posture 2

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

esimker Authentication

2 schemes

SECURITY

esimker Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access (API Evangelist recommendations) 1

Recommended x-agentic-access execution contracts for AI agents.

esimker Agentic Access

56 operations · 31 acting · 3 human-in-the-loop

56 operations · 31 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

Login

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

LLMsTxt

LLMsTxt

Design & Contract 8

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

Idempotency

Conventions

ErrorCatalog

Conformance

Scroll for all 8

Access & Security 3

Authentication, authorization, and security posture

Authentication

Authentication

Security

Security

DomainSecurity

DomainSecurity

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Blog

Blog

Website

Website

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: esimker-com
name: esimker
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-11-13'
  method: derived
image: https://esimker.com/og.png?v=tmuy6h
description: esimker provides prepaid mobile data eSIMs for travelers in 38 destinations worldwide. Users can purchase data
  plans with a credit card and receive a QR code for instant activation. The service emphasizes flexibility, no‑contract plans,
  and multi‑language support, catering to international travelers seeking reliable connectivity without roaming fees.
url: https://artifacts.apis.io/esimker-com/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-07 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-11-07'
modified: '2026-11-07'
tags:
- Travel
- Mobile
- eSIM
- Prepaid
- International
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/esimker-com-agentic-access.yml
- type: Spectral
  url: rules/esimker-com-rules.yml
- type: JSONLD
  url: json-ld/esimker-com-context.jsonld
- type: Vocabulary
  url: vocabulary/esimker-com-vocabulary.yml
- type: DataModel
  url: data-model/esimker-com-data-model.yml
- type: Idempotency
  url: conventions/esimker-com-conventions.yml
- type: Conventions
  url: conventions/esimker-com-conventions.yml
- type: Authentication
  url: authentication/esimker-com-authentication.yml
- type: ErrorCatalog
  url: errors/esimker-com-problem-types.yml
- type: Conformance
  url: conformance/esimker-com-conformance.yml
- type: LLMsTxt
  url: llms/esimker-com-llms.txt
- type: Hosts
  url: hosts/esimker-com-hosts.yml
- type: Vendors
  url: vendors/esimker-com-vendors.yml
- type: TermsOfService
  url: https://esimker.com/terms
- type: Security
  url: https://esimker.com/security
- type: PrivacyPolicy
  url: https://esimker.com/privacy
- type: Login
  url: https://esimker.com/account/login
- type: Documentation
  url: https://esimker.com/blog/guides
- type: Blog
  url: https://esimker.com/blog
- type: APIReference
  url: https://esimker.com/llms.txt
- type: DomainSecurity
  url: security/esimker-com-domain-security.yml
- type: Website
  url: https://esimker.com/
apis:
- aid: esimker-com:esimker-com-account-api
  name: esimker Account API
  description: The account API from esimker — 24 operation(s) for account.
  humanURL: https://esimker.com/api/docs
  baseURL: https://esimker.com/api
  tags:
  - Account
  tags_raw:
  - account
  properties:
  - type: OpenAPI
    url: openapi/esimker-com-account-api-openapi.yml
  - type: JSONSchema
    url: json-schema/esimker-com-register-in-schema.json
- aid: esimker-com:esimker-com-blog-api
  name: esimker Blog API
  description: The blog API from esimker — 2 operation(s) for blog.
  humanURL: https://esimker.com/api/docs
  baseURL: https://esimker.com/api
  tags:
  - Blog
  tags_raw:
  - blog
  properties:
  - type: OpenAPI
    url: openapi/esimker-com-blog-api-openapi.yml
- aid: esimker-com:esimker-com-catalog-api
  name: esimker Catalog API
  description: The catalog API from esimker — 2 operation(s) for catalog.
  humanURL: https://esimker.com/api/docs
  baseURL: https://esimker.com/api
  tags:
  - Catalog
  tags_raw:
  - catalog
  properties:
  - type: OpenAPI
    url: openapi/esimker-com-catalog-api-openapi.yml
- aid: esimker-com:esimker-com-orders-api
  name: esimker Orders API
  description: The orders API from esimker — 7 operation(s) for orders.
  humanURL: https://esimker.com/api/docs
  baseURL: https://esimker.com/api
  tags:
  - Order
  tags_raw:
  - orders
  properties:
  - type: OpenAPI
    url: openapi/esimker-com-orders-api-openapi.yml
  - type: JSONSchema
    url: json-schema/esimker-com-create-order-in-schema.json
- aid: esimker-com:esimker-com-pages-api
  name: esimker Pages API
  description: The pages API from esimker — 1 operation(s) for pages.
  humanURL: https://esimker.com/api/docs
  baseURL: https://esimker.com/api
  tags:
  - Pages
  tags_raw:
  - pages
  properties:
  - type: OpenAPI
    url: openapi/esimker-com-pages-api-openapi.yml
- aid: esimker-com:esimker-com-rates-api
  name: esimker Rates API
  description: The rates API from esimker — 1 operation(s) for rates.
  humanURL: https://esimker.com/api/docs
  baseURL: https://esimker.com/api
  tags:
  - Rates
  tags_raw:
  - rates
  properties:
  - type: OpenAPI
    url: openapi/esimker-com-rates-api-openapi.yml
- aid: esimker-com:esimker-com-reseller-api
  name: esimker Reseller API
  description: The reseller API from esimker — 4 operation(s) for reseller.
  humanURL: https://esimker.com/api/docs
  baseURL: https://esimker.com/api
  tags:
  - Reseller
  tags_raw:
  - reseller
  properties:
  - type: OpenAPI
    url: openapi/esimker-com-reseller-api-openapi.yml
  - type: JSONSchema
    url: json-schema/esimker-com-reseller-order-in-schema.json
- aid: esimker-com:esimker-com-seo-api
  name: esimker Seo API
  description: The seo API from esimker — 1 operation(s) for seo.
  humanURL: https://esimker.com/api/docs
  baseURL: https://esimker.com/api
  tags:
  - SEO
  tags_raw:
  - seo
  properties:
  - type: OpenAPI
    url: openapi/esimker-com-seo-api-openapi.yml
- aid: esimker-com:esimker-com-support-api
  name: esimker Support API
  description: The support API from esimker — 1 operation(s) for support.
  humanURL: https://esimker.com/api/docs
  baseURL: https://esimker.com/api
  tags:
  - Support
  tags_raw:
  - support
  properties:
  - type: OpenAPI
    url: openapi/esimker-com-support-api-openapi.yml
  - type: JSONSchema
    url: json-schema/esimker-com-ticket-in-schema.json
- aid: esimker-com:esimker-com-telegram-api
  name: esimker Telegram API
  description: The telegram API from esimker — 3 operation(s) for telegram.
  humanURL: https://esimker.com/api/docs
  baseURL: https://esimker.com/api
  tags:
  - Telegram
  tags_raw:
  - telegram
  properties:
  - type: OpenAPI
    url: openapi/esimker-com-telegram-api-openapi.yml
  - type: JSONSchema
    url: json-schema/esimker-com-chat-wallet-secret-schema.json
- aid: esimker-com:esimker-com-topups-api
  name: esimker Topups API
  description: The topups API from esimker — 2 operation(s) for topups.
  humanURL: https://esimker.com/api/docs
  baseURL: https://esimker.com/api
  tags:
  - Top-Ups
  tags_raw:
  - topups
  properties:
  - type: OpenAPI
    url: openapi/esimker-com-topups-api-openapi.yml
- aid: esimker-com:esimker-com-wallet-api
  name: esimker Wallet API
  description: The wallet API from esimker — 4 operation(s) for wallet.
  humanURL: https://esimker.com/api/docs
  baseURL: https://esimker.com/api
  tags:
  - Wallets
  tags_raw:
  - wallet
  properties:
  - type: OpenAPI
    url: openapi/esimker-com-wallet-api-openapi.yml
  - type: JSONSchema
    url: json-schema/esimker-com-deposit-in-schema.json
  - type: JSONSchema
    url: json-schema/esimker-com-deposit-out-schema.json
x-enrichment:
  date: '2026-11-07'
  status: enriched
  artifacts_added: 21
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

esimker API — frequently asked questions

Does esimker have an API?

Yes. APIs.io lists 12 APIs from esimker, including esimker Account API, esimker Blog API and esimker Catalog API, and 9 more.

Is there an OpenAPI specification for the esimker API?

Yes. APIs.io indexes 12 OpenAPI specifications for esimker, each linked for download from this page.

How do I authenticate with the esimker API?

esimker uses bearer-token authentication (2 schemes). The details are profiled on APIs.io as esimker Authentication.

Is the esimker API ready for AI agents?

esimker has a Kin Score of 36.8 out of 100 (thin) and an Agent Readiness score of 25.9 (agent-aware), scored by API Evangelist on 2026-11-13.

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