Telr · OpenAPI Overlay 1.0.0

API Evangelist enhancements for Telr Payment Gateway API

4 actions 4 updates update extends openapi/telr-openapi.yml
Derived by API Evangelist Built from the contracts Telr publishes. Telr did not publish this file.
View Overlay File View on GitHub Overlay Specification

What the actions change

x-apievangelist-enrichedx-artifactsx-agent-readyx-decline-codesx-test-cardsx-webhooksx-idempotency

Targets 3

$.info
$.paths['/gateway/remote.json'].post
$.paths['/api/v1/orders'].post

OpenAPI Overlay

Raw ↑ 
overlay: 1.0.0
info:
  title: API Evangelist enhancements for Telr Payment Gateway API
  version: 1.0.0
extends: openapi/telr-openapi.yml
actions:
- target: $.info
  update:
    x-apievangelist-enriched: '2026-07-17'
    x-artifacts:
      authentication: authentication/telr-authentication.yml
      conventions: conventions/telr-conventions.yml
      errors: errors/telr-problem-types.yml
      decline_codes: errors/telr-decline-codes.yml
      webhooks: asyncapi/telr-webhooks.yml
      sandbox: sandbox/telr-sandbox.yml
      lifecycle: lifecycle/telr-lifecycle.yml
      conformance: conformance/telr-conformance.yml
      data_model: data-model/telr-data-model.yml
- target: $.info
  update:
    x-agent-ready:
      idempotency: false
      test_mode: per-transaction (test flag)
      auth_styles: [in-body-store-authkey, http-basic]
- target: $.paths['/gateway/remote.json'].post
  update:
    x-decline-codes: errors/telr-decline-codes.yml
    x-test-cards: sandbox/telr-sandbox.yml
- target: $.paths['/api/v1/orders'].post
  update:
    x-webhooks: asyncapi/telr-webhooks.yml
    x-idempotency: none-documented

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/telr-openapi-overlay"
All openapi overlays 
curl "https://apis.io/api/v1/overlays?limit=25"

Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.

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.