# lemlist: agent door 53, human door not measured
- Site: lemlist.com
- Scanned: 2026-09-08
- Scan type: Basic scan
- Business type: b2b_saas
- Report: https://www.seconddoor.io/r/lemlist-ss8dak
- Scanner version: 16
Lemlist publishes prices and welcomes AI crawlers, but offers no API access and requires email verification before trial access.
## Scores
| Measure | Score |
| --- | --- |
| Humans | not measured |
| Agents | 53/100 (6/6 dimensions) |
| Composite | 53/100 |
Agent door only. The human door could not be measured on this scan. A Door Gap needs both doors, so this scan does not report one.
## What the machine actually did
The agent got through 6 of 12 requests, but could not read the site's own guide for language models. It came up empty on 5 other checks too.
- 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
- missing read the site's own guide for language models
- ok      find out what pages exist
- missing find a contact route for machines
- ok      find a published agent interface
- missing find an agent plugin manifest
- missing find out whether verified agents are recognised
- missing read the homepage as data rather than as a page
- missing find a machine readable API spec
- ok      read the prices without running JavaScript
## Top issues
1. **No API endpoint is published, blocking programmatic access to the product and pricing data.** (programmatic_onboarding)
2. **No security.txt is published, so a machine has no documented route to report a problem.** (machine_fetchable_trust)
3. **No schema.org markup is present on the homepage, preventing machines from understanding the product structure and pricing tiers.** (machine_discoverability)
The evidence and the recommended fix for each are on the report page: https://www.seconddoor.io/r/lemlist-ss8dak
## Files generated from this scan
- **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.
- **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.
- **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.
- **security.txt** at `/.well-known/security.txt`, 10 minutes, no developer needed. Verify: The next scan fetches /.well-known/security.txt as text and the security.txt check passes.
- **llms.txt** at `/llms.txt`, 15 minutes, no developer needed. Verify: The next scan fetches /llms.txt as text and the llms.txt 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/lemlist-ss8dak
## The agent door
- **machine_discoverability** 92/100. No AI crawler is blocked by robots.txt, a real browser is served the page normally, and key pages render without JavaScript. The sitemap lists 1153 URLs.
- **programmatic_onboarding** 10/100. No API surface was found. The documentation link points to https://developer.lemlist.com/, but no OpenAPI spec exists at any of the 5 standard paths checked, and no machine-readable endpoint specification is published.
- **pricing_legibility** 85/100. 10 prices are readable without JavaScript on the pricing page, with no tier gated behind a sales contact. Prices range from $0.01 to $109 per seat. The Enterprise tier is named but not sent to sales; it is listed as a plan option.
- **agent_aware_instrumentation** 58/100. An MCP manifest is published at https://developer.lemlist.com/.well-known/mcp.json, which allows Claude and other MCP-aware agents to discover available tools.
- **machine_fetchable_trust** 40/100. No security.txt file is published at /.well-known/security.txt, which would declare security contacts and policies. The homepage responds to automated requests with HTTP 200, but no trust signals such as security contact information or.
- **commercial_rails** 35/100. Prices are published in raw HTML on the pricing page with no JavaScript requirement. However, no payment method is discoverable without entering the signup flow, and the trial path requires email verification before access is granted.
## The human door
- **steps_to_first_value** not measured. Could not verify: this scan did not reach the pages that would show it.
- **required_fields** not measured. Could not verify: this scan did not reach the pages that would show it.
- **verification_walls** not measured. Could not verify: this scan did not reach the pages that would show it.
- **error_recovery** not measured. Could not verify: this scan did not reach the pages that would show it.
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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