# Mailchimp: 34 point Door Gap
- Site: mailchimp.com
- Scanned: 2026-09-08
- Scan type: Basic scan
- Business type: hybrid
- Report: https://www.seconddoor.io/r/mailchimp-e2gq3w
- Scanner version: 12
Mailchimp blocks automated signup evaluation with traffic challenges while hiding prices behind JavaScript, forcing both humans and agents to navigate blind.
## Scores
| Measure | Score |
| --- | --- |
| Humans | 80/100 |
| Agents | 46/100 |
| Composite | 63/100 |
| Door Gap | 34 points |
The human score is the mean of the four human dimensions, the agent score the mean of the six agent dimensions, and the Door Gap the difference between them.
## What the machine actually did
The agent got through 11 of 18 requests, but could not find a published agent interface. It came up empty on 6 other checks too. That is enough missing for a machine to give up before it reaches a purchase.
- ok      reach the site at all
- ok      find out whether machines are welcome
- ok      ask whether the door opens for requests carrying the AI crawlers' names
- ok      read the site's own guide for language models
- ok      find out what pages exist
- ok      find a contact route for machines
- missing find a published agent interface
- missing find an agent plugin manifest
- missing find out whether verified agents are recognised
- ok      read the homepage as data rather than as a page
- missing find a machine readable API spec
- ok      read the developer documentation
- missing read the prices without running JavaScript
- missing read the product catalogue as data
- ok      read a product page as data
- missing read the returns and shipping terms
- ok      find a comparison page worth citing
- ok      walk the way a visitor would, to a signup form or a product
## Top issues
1. **No OpenAPI specification was found at the 6 standard paths checked, so a client must be written from prose instead of generated.** (programmatic_onboarding)
2. **No MCP manifest was found at the 3 standard paths checked, so an agent has no published machine door to this site.** (agent_aware_instrumentation)
3. **Prices are hidden behind JavaScript, making them invisible to any client that does not render pages.** (pricing_legibility)
The evidence and the recommended fix for each are on the report page: https://www.seconddoor.io/r/mailchimp-e2gq3w
## Files generated from this scan
- **Prices in the HTML, not only after JavaScript** at `pricing page`, 1 hour, developer. Verify: The next scan reads the prices in the raw HTML of the pricing page, with none needing JavaScript to appear.
- **Pricing as Offer structured data** at `pricing page`, 20 minutes, developer. Verify: The next scan reads Offer structured data with a price and currency on the pricing page, and the pricing check credits it.
- **robots.txt rules for AI crawlers** at `/robots.txt`, 10 minutes, no developer needed. Verify: The next scan reads robots.txt and finds every search and agent crawler allowed, none of them kept off product or pricing paths.
- **Returns and refunds page** at `/returns`, 30 minutes, no developer needed. Verify: The next scan reads the returns policy page as text without JavaScript and finds it linked from a product page.
- **Shipping and delivery page** at `/shipping`, 30 minutes, no developer needed. Verify: The next scan reads the shipping policy page as text without JavaScript and finds it linked from a product page.
- **Agent checkout: where you stand** at `notes`, 10 minutes, no developer needed. Verify: The next scan finds a UCP manifest, a storefront MCP endpoint or another discovery file answering, and the checkout check passes.
- **Machine interfaces: where you stand** at `notes`, 10 minutes, no developer needed. Verify: The next scan finds the interface you published answering at its well-known path, and that check passes.
- **pricing.md** at `/pricing.md`, 20 minutes, no developer needed. Verify: The next scan fetches /pricing.md as text and records pricing as machine readable.
- **Organization structured data** at `homepage`, 15 minutes, developer. Verify: The next scan reads Organization and WebSite nodes in the homepage JSON-LD and the structured data check passes.
Each file is written from what this scan found on the site. The content is in the JSON once the evidence is opened: https://www.seconddoor.io/api/reports/mailchimp-e2gq3w
## The agent door
- **machine_discoverability** 77/100. No AI crawler is blocked, a real browser is served the page normally, no user agent rule refuses the declared AI crawler names, key content only appears after JavaScript runs, a sitemap listing 435 URLs, some structured data, but a thin.
- **programmatic_onboarding** 60/100. The docs describe self serve key issuance, API credentials are documented, authentication is documented, endpoint examples are shown, code samples are provided.
- **pricing_legibility** 30/100. Five prices render on the pricing page only after JavaScript executes: Free, $0, $299, $350, $385, and $800. The raw HTML contains no prices at all. A client that does not render pages sees nothing.
- **agent_aware_instrumentation** 23/100. No MCP manifest, WooCommerce supports the agent checkout protocols, but none is published yet, developer documentation describes an API, but only in prose.
- **machine_fetchable_trust** 85/100. Security.txt is published at /.well-known/security.txt with a contact route for machines. The homepage answers automated HTTP requests with a 200 status in 125ms. Structured data on the homepage includes Service and Organization types.
- **commercial_rails** 0/100. The pricing page at /pricing/marketing/compare-plans/ publishes plan names and five price points that render after JavaScript, but routes to sales for any purchase decision.
## The human door
- **steps_to_first_value** 80/100. The signup page is 2 steps from the homepage via the 'Start Free Trial' call to action. However, an automated browser received a traffic challenge when attempting to reach the form, so the form itself could not be read.
- **required_fields** null/100. Could not verify: this scan did not reach the pages that would show it.
- **verification_walls** null/100. Could not verify: this scan did not reach the pages that would show it.
- **error_recovery** null/100. Could not verify: this scan did not reach the pages that would show it.
---
Scored by SecondDoor. Method: https://www.seconddoor.io/methodology
Scan another site: https://www.seconddoor.io
Rate an issue or this report: POST https://www.seconddoor.io/api/feedback, or the rate_fix tool on https://www.seconddoor.io/api/mcp