GSMA · OpenAPI Overlay 1.0.0

API Evangelist enhancements for One Time Password SMS

3 actions 3 updates update extends openapi/gsma-open-gateway-otp-validation-openapi.yml

Derived by API Evangelist Built from the contracts GSMA publishes. GSMA did not publish this file.

View Overlay File View on GitHub Overlay Specification

What the actions change

x-apievangelist-providerx-apievangelist-sourcex-apievangelist-harvestedx-apievangelist-artifactsx-apievangelist-operation-countx-apievangelist-notex-apievangelist-camara

Targets 2

$.info

$.servers[0]

OpenAPI Overlay

overlay: 1.0.0
info:
  title: API Evangelist enhancements for One Time Password SMS
  version: 1.0.0
extends: openapi/gsma-open-gateway-otp-validation-openapi.yml
x-generated: '2026-07-25'
x-method: generated
actions:
- target: $.info
  update:
    x-apievangelist-provider: gsma
    x-apievangelist-source: https://github.com/api-evangelist/gsma
    x-apievangelist-harvested: '2026-07-25'
    x-apievangelist-artifacts:
      authentication: authentication/gsma-authentication.yml
      scopes: scopes/gsma-scopes.yml
      errors: errors/gsma-problem-types.yml
      conventions: conventions/gsma-conventions.yml
      lifecycle: lifecycle/gsma-lifecycle.yml
      agentic-access: agentic-access/gsma-agentic-access.yml
    x-apievangelist-operation-count: 2
- target: $.servers[0]
  update:
    x-apievangelist-note: The GSMA operates no production endpoint for this API. The apiRoot server variable is
      filled in by the operator or aggregator serving the API; the default value published in the specification
      is a placeholder, not a reachable host. Live deployments are listed at https://open-gateway.gsma.com/map
- target: $.info
  update:
    x-apievangelist-camara:
      programme: GSMA Open Gateway
      upstream: https://camaraproject.org/api-overview
      authorization: OpenID Connect against the operator authorization server; the openIdConnectUrl in the published
        spec is a CAMARA placeholder
      tracing_header: x-correlator

Work with this as data

Every overlay here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for openapi overlays

4 MCP tools reach this

find_overlaysBrowse and filter every overlay in the catalog.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

curl for this page

This overlay

curl "https://apis.io/api/v1/overlays/gsma-open-gateway-otp-validation-overlay"

All openapi overlays

curl "https://apis.io/api/v1/overlays?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.