Whether to publish an API or an MCP server

In short

Decide which tasks you want agents to finish directly, such as checking stock, booking, quoting or signing up, and whether to offer them through a documented interface instead of web forms. Agents work web forms the way people do. An interface is a product project with a running cost, so name the task before the technology.

The decision

Decide which tasks you want agents to finish directly (check stock, book, quote, sign up) and whether to offer them through a documented interface instead of your web forms.

Who decides: Product or digital leadership names the tasks; engineering picks the interface.

The options

  1. Offer an MCP server or API for named tasksAgents can act without clicking through pages; AgentReady makes an MCP server or a CLI a MUST when agents should complete a task. AgentReady.org guide, read 4 Nov 2026.
  2. Join a network that already offers oneA clinic on Zocdoc, a hotel on a booking platform, a store on Shopify gets an agent interface through the network. Zocdoc for Agents (markdown), read 4 Nov 2026.
  3. Keep web forms onlyAgents work your forms like a person; Ora's report of October 2026 notes that Muse uses a service's API when one exists and opens a browser only when none does. Ora research: AX is the new AEO (8 Oct 2026), read 4 Nov 2026.

What we found

  • 4 Nov 2026

    In the network's own crawl, run of 4 Nov 2026 (13,071 of 13,071 domains from Tranco list 746WX plus Ora leaderboard domains), 2.1 percent of 10,385 sites published an MCP manifest, OpenAPI file, agent card or agents.json at the standard paths.

    Scorecard methodology: the crawl of 4 Nov 2026, read 4 Nov 2026
  • 28 Oct 2026

    Zocdoc gives registered agents an MCP server or REST API to search providers, check insurance and book.

    Zocdoc for Agents (markdown), read 4 Nov 2026
  • 8 Oct 2026

    Ora's report of 8 Oct 2026, citing The New Stack, says Shopify merchants stayed reachable through a declared checkout path when Amazon blocked Muse.

    Vendor claim. Ora research: AX is the new AEO (8 Oct 2026), read 4 Nov 2026

How to decide

  • Name one task and one measure of success before you choose an interface.
  • Join a network that already has one where you can. A clinic on a booking network or a store on a platform gets an agent interface without building it.
  • Treat any interface you publish as something to maintain, with an owner and a review each quarter.

Where this shows up

  • Self-check question 9Can the main task on your site (buy, book, subscribe or request a quote) be completed with standard web forms and buttons, without a CAPTCHA at every step?
  • Self-check question 11Do you offer a documented API, an MCP server or WebMCP tools for your main tasks?
  • The software guideAgents that read docs and pricing, sign up for trials and open paid accounts.
  • The healthcare guideAppointment booking through Zocdoc, Gemini and Amazon Health AI, with patient consent rules.
  • The professional services guideAssistants that call firms, fill quote forms and collect availability.

Sources

  1. AgentReady.org guide (agentready.org), read 4 Nov 2026.
  2. Zocdoc for Agents (markdown) (zocdoc.com/business/welcome-agents.md), read 4 Nov 2026.
  3. Ora research: AX is the new AEO (8 Oct 2026) (ora.ai/blog/ax-is-the-new-aeo), read 4 Nov 2026.
  4. Scorecard methodology: the crawl of 4 Nov 2026 (amireadyforagents.com/scorecards/methodology), read 4 Nov 2026.
  5. Sector scorecards dataset, edition 4 Nov 2026 (amireadyforagents.com/scorecards), read 4 Nov 2026.

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