tessl.io · OpenAPI Overlay 1.0.0

API Evangelist enhancements for Tessl API

3 actions 3 updates security extends openapi/tesslio-openapi-original.json
Derived by API Evangelist Built from the contracts tessl.io publishes. tessl.io did not publish this file.
View Overlay File View on GitHub Overlay Specification

What the actions change

x-apievangelist-enrichedx-apievangelist-notesx-authenticationx-conventionsx-errorsx-data-modelsecuritySchemesx-agentic-access

Targets 2

$.info
$.components

OpenAPI Overlay

Raw ↑
overlay: 1.0.0
info:
  title: API Evangelist enhancements for Tessl API
  version: 1.0.0
extends: openapi/tesslio-openapi-original.json
actions:
- target: $.info
  update:
    x-apievangelist-enriched: '2026-07-21'
    x-apievangelist-notes: >-
      Harvested from https://api.tessl.io/openapi.json. The source spec declares
      no operationIds, no components.schemas (all inline), no securitySchemes,
      and no in-spec examples; auth, conventions, and error semantics are captured
      in sibling API Evangelist artifacts.
    x-authentication: authentication/tesslio-authentication.yml
    x-conventions: conventions/tesslio-conventions.yml
    x-errors: errors/tesslio-problem-types.yml
    x-data-model: data-model/tesslio-data-model.yml
- target: $.components
  update:
    securitySchemes:
      bearerAuth:
        type: http
        scheme: bearer
        description: >-
          Bearer token (from `tessl login`) or workspace API key (TESSL_TOKEN)
          in the Authorization header. Documented by API Evangelist; not present
          in the source spec.
- target: $.info
  update:
    x-agentic-access: agentic-access/tesslio-agentic-access.yml

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/tesslio-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.

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