Country Calling Codes

Public read-only reference API for ITU E.164 country calling codes, phone number formatting, batch normalization, comparison, dialing guidance, input rules, and calling windows. Ships a REST API, hosted MCP server, llms.txt, and agent skill manifest simultaneously. No authentication required.

Country Calling Codes publishes 4 APIs on the APIs.io network, including Calling codes API, Phone formatting API, Phone workflows API, and 1 more. Tagged areas include Data, Reference, Telecommunications, Phone, and OpenAPI.

Country Calling Codes’ developer surface includes support and 12 more developer resources.

🌐 Visit website 📡 Source on GitHub

36.3/100 thin ▬ flat Agent 39/100 agent ready Front door AI 2/6 trace Full breakdown ↓
scored 2026-09-25 · rubric v0.23.0

1 APIs 2 MCP Servers

Data Reference Telecommunications Phone OpenAPI MCP

Kin Score

Kin Score How this is scored →
scored 2026-09-25 · rubric v0.23.0

Composite quality — 36.3/100 · thin

Contract Quality 8.7 / 19

Developer Ergonomics 6.1 / 15

Access Clarity 4.7 / 15

Operational Transparency 2.6 / 10

Contract Governance 0.4 / 9

Discoverability 5.0 / 8

Regulatory Posture 3.4 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 39/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 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

Regulatory Posture applies to this provider. Its tags matched the Telecommunications 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 applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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 github.com/api-evangelist/country-calling-codes: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 4

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

Country Calling Codes Calling codes API

The Calling codes API from Country Calling Codes — 2 operation(s) for calling codes.

Country Calling Codes Phone formatting API

The Phone formatting API from Country Calling Codes — 1 operation(s) for phone formatting.

Country Calling Codes Phone workflows API

The Phone workflows API from Country Calling Codes — 9 operation(s) for phone workflows.

Country Calling Codes Service API

The Service API from Country Calling Codes — 1 operation(s) for service.

MCP Servers 2

Model Context Protocol servers that expose these APIs to AI agents.

Country Calling Codes MCP Server

MCP SERVER

Country Calling Codes MCP Server

MCP SERVER

Pricing Plans 1

Published pricing tiers and plan structures.

Country Calling Codes Plans Pricing

1 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Country Calling Codes Rate Limits

0 limits

RATE LIMITS

Security Posture 3

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

Country Calling Codes Authentication

0 schemes

SECURITY

Country Calling Codes Domain Security

TLSv1.3 · HSTS

SECURITY

Country Calling Codes Vulnerability Disclosure

security.txt · contact published

SECURITY

Resources

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

MCPServer

MCPServer

AgentSkill

AgentSkill

WellKnown

Access & Security 4

Authentication, authorization, and security posture

VulnerabilityDisclosure

VulnerabilityDisclosure

Security

Security

DomainSecurity

DomainSecurity

SecurityTxt

SecurityTxt

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 1

Pricing, plans, and the legal terms of use

PrivacyPolicy

PrivacyPolicy

Company 1

The organization behind the API

Website

Website

Other 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

name: Country Calling Codes
description: Public read-only reference API for ITU E.164 country calling codes, phone number formatting, batch normalization,
  comparison, dialing guidance, input rules, and calling windows. Ships a REST API, hosted MCP server, llms.txt, and agent
  skill manifest simultaneously. No authentication required.
url: https://raw.githubusercontent.com/api-evangelist/country-calling-codes/refs/heads/main/apis.yml
created: '2026-09-08'
modified: '2026-09-09'
specificationVersion: '0.21'
image: https://www.countrycalling.codes/opengraph-image
tags:
- Data
- Reference
- Telecommunications
- Phone
- OpenAPI
- MCP
tags_raw:
- data
- reference
- telecom
- phone
- openapi
- mcp
- Telecom
apis:
- aid: country-calling-codes:country-calling-codes-calling-codes-api
  name: Country Calling Codes Calling codes API
  description: The Calling codes API from Country Calling Codes — 2 operation(s) for calling codes.
  humanURL: https://www.countrycalling.codes/developers
  tags:
  - Calling codes
  properties:
  - type: OpenAPI
    url: openapi/country-calling-codes-calling-codes-api-openapi.yml
  - type: Documentation
    url: https://www.countrycalling.codes/developers
  - type: APIReference
    url: https://www.countrycalling.codes/developers
  - type: ToolCrosswalk
    url: mcp/country-calling-codes-tool-crosswalk.yml
  - type: LLMsTxt
    url: https://www.countrycalling.codes/llms.txt
  - type: LLMsTxt
    url: llms/country-calling-codes-llms.txt
  - type: Authentication
    url: authentication/country-calling-codes-authentication.yml
  - type: Conventions
    url: conventions/country-calling-codes-conventions.yml
  - type: ErrorCatalog
    url: errors/country-calling-codes-problem-types.yml
  - type: Lifecycle
    url: lifecycle/country-calling-codes-lifecycle.yml
  - type: Conformance
    url: conformance/country-calling-codes-conformance.yml
  - type: RateLimits
    url: rate-limits/country-calling-codes-rate-limits.yml
  - type: Plans
    url: plans/country-calling-codes-plans-pricing.yml
  - type: DataModel
    url: data-model/country-calling-codes-data-model.yml
  - type: StatusPage
    url: https://www.countrycalling.codes/api/calling-codes/status
- aid: country-calling-codes:country-calling-codes-phone-formatting-api
  name: Country Calling Codes Phone formatting API
  description: The Phone formatting API from Country Calling Codes — 1 operation(s) for phone formatting.
  humanURL: https://www.countrycalling.codes/developers
  tags:
  - Phone formatting
  properties:
  - type: OpenAPI
    url: openapi/country-calling-codes-phone-formatting-api-openapi.yml
  - type: Documentation
    url: https://www.countrycalling.codes/developers
  - type: APIReference
    url: https://www.countrycalling.codes/developers
  - type: ToolCrosswalk
    url: mcp/country-calling-codes-tool-crosswalk.yml
  - type: LLMsTxt
    url: https://www.countrycalling.codes/llms.txt
  - type: LLMsTxt
    url: llms/country-calling-codes-llms.txt
  - type: Authentication
    url: authentication/country-calling-codes-authentication.yml
  - type: Conventions
    url: conventions/country-calling-codes-conventions.yml
  - type: ErrorCatalog
    url: errors/country-calling-codes-problem-types.yml
  - type: Lifecycle
    url: lifecycle/country-calling-codes-lifecycle.yml
  - type: Conformance
    url: conformance/country-calling-codes-conformance.yml
  - type: RateLimits
    url: rate-limits/country-calling-codes-rate-limits.yml
  - type: Plans
    url: plans/country-calling-codes-plans-pricing.yml
  - type: DataModel
    url: data-model/country-calling-codes-data-model.yml
  - type: StatusPage
    url: https://www.countrycalling.codes/api/calling-codes/status
- aid: country-calling-codes:country-calling-codes-phone-workflows-api
  name: Country Calling Codes Phone workflows API
  description: The Phone workflows API from Country Calling Codes — 9 operation(s) for phone workflows.
  humanURL: https://www.countrycalling.codes/developers
  tags:
  - Phone workflows
  properties:
  - type: OpenAPI
    url: openapi/country-calling-codes-phone-workflows-api-openapi.yml
  - type: Documentation
    url: https://www.countrycalling.codes/developers
  - type: APIReference
    url: https://www.countrycalling.codes/developers
  - type: ToolCrosswalk
    url: mcp/country-calling-codes-tool-crosswalk.yml
  - type: LLMsTxt
    url: https://www.countrycalling.codes/llms.txt
  - type: LLMsTxt
    url: llms/country-calling-codes-llms.txt
  - type: Authentication
    url: authentication/country-calling-codes-authentication.yml
  - type: Conventions
    url: conventions/country-calling-codes-conventions.yml
  - type: ErrorCatalog
    url: errors/country-calling-codes-problem-types.yml
  - type: Lifecycle
    url: lifecycle/country-calling-codes-lifecycle.yml
  - type: Conformance
    url: conformance/country-calling-codes-conformance.yml
  - type: RateLimits
    url: rate-limits/country-calling-codes-rate-limits.yml
  - type: Plans
    url: plans/country-calling-codes-plans-pricing.yml
  - type: DataModel
    url: data-model/country-calling-codes-data-model.yml
  - type: StatusPage
    url: https://www.countrycalling.codes/api/calling-codes/status
- aid: country-calling-codes:country-calling-codes-service-api
  name: Country Calling Codes Service API
  description: The Service API from Country Calling Codes — 1 operation(s) for service.
  humanURL: https://www.countrycalling.codes/developers
  tags:
  - Services
  tags_raw:
  - Service
  properties:
  - type: OpenAPI
    url: openapi/country-calling-codes-service-api-openapi.yml
  - type: Documentation
    url: https://www.countrycalling.codes/developers
  - type: APIReference
    url: https://www.countrycalling.codes/developers
  - type: ToolCrosswalk
    url: mcp/country-calling-codes-tool-crosswalk.yml
  - type: LLMsTxt
    url: https://www.countrycalling.codes/llms.txt
  - type: LLMsTxt
    url: llms/country-calling-codes-llms.txt
  - type: Authentication
    url: authentication/country-calling-codes-authentication.yml
  - type: Conventions
    url: conventions/country-calling-codes-conventions.yml
  - type: ErrorCatalog
    url: errors/country-calling-codes-problem-types.yml
  - type: Lifecycle
    url: lifecycle/country-calling-codes-lifecycle.yml
  - type: Conformance
    url: conformance/country-calling-codes-conformance.yml
  - type: RateLimits
    url: rate-limits/country-calling-codes-rate-limits.yml
  - type: Plans
    url: plans/country-calling-codes-plans-pricing.yml
  - type: DataModel
    url: data-model/country-calling-codes-data-model.yml
  - type: StatusPage
    url: https://www.countrycalling.codes/api/calling-codes/status
maintainers:
- FN: Kajdep
  email: hello@countrycalling.codes
  url: https://www.countrycalling.codes
generated:
  by: apis.io/add
  model: claude-opus-4-8
  confidence: 97
  at: '2026-09-08T12:26:26.861Z'
common:
- type: MCPServer
  url: https://www.countrycalling.codes/api/mcp
- type: MCPServer
  url: mcp/country-calling-codes-mcp.yml
- type: AgentSkill
  url: https://www.countrycalling.codes/skill.json
- type: AgentSkill
  url: skills/country-calling-codes-skill.json
- type: Overlay
  url: overlays/country-calling-codes-openapi-overlay.yaml
- type: Website
  url: https://www.countrycalling.codes
- type: VulnerabilityDisclosure
  url: security/country-calling-codes-vulnerability-disclosure.yml
- type: Security
  url: security/country-calling-codes-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/country-calling-codes-domain-security.yml
- type: WellKnown
  url: well-known/country-calling-codes-well-known.yml
- type: SecurityTxt
  url: well-known/country-calling-codes-security.txt
- type: PrivacyPolicy
  url: https://www.countrycalling.codes/privacy
- type: Support
  url: https://www.countrycalling.codes/contact
x-enrichment:
  date: '2026-09-09'
  status: enriched
  artifacts_added: 21
  pass: local-v3

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