# Circleback: agent door 80, human door not measured
- Site: circleback.ai
- Scanned: 2026-09-10
- Scan type: Basic scan
- Business type: b2b_saas
- Report: https://www.seconddoor.io/r/circleback-ahz74u
- Scanner version: 49
- Scanner release: c49d1def936f56a5ab0871f38c5e6412433ec37a
- Scoring methodology: 1
- Evidence schema: 1
0 human and 4 agent dimensions measured from the pages checked; remaining dimensions are not scored.
## Scores
| Measure | Score |
| --- | --- |
| Humans | not measured |
| Agents | 80/100 (4/6 dimensions) |
| Composite | 80/100 |
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 scanner recorded successful observations for 9 of 13 checks, but could not find an MCP manifest at the standard paths checked. It came up empty on 3 other checks too. 2 checks could not be measured; see the report limitations.
- 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 an MCP manifest at the standard paths checked
- 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
- ok      read the developer documentation
- ok      read the prices without running JavaScript
- missing find a comparison page worth citing
## What a visitor meets
1. **Entry observation** (unmeasured). The signup path at circleback.ai is closed to automated visitors by robots.txt, so an agent honouring it did not open that destination. Its contents were not observed. The rule is "Disallow: /signup".
## Files generated from this scan
- **A comparison page brief** at `/compare/circleback-vs-competitor`, 3 hours, no developer needed. Verify: The next scan finds a comparison page listed in the sitemap or linked from the homepage, and reads its text without JavaScript.
- **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.
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/circleback-ahz74u
## The agent door
- **machine_discoverability** 100/100. No restriction on the tested crawler names was found in robots.txt. On its first visit, our browser read the homepage. No user agent rule refused the tested retrieval crawler names.
- **programmatic_onboarding** not measured. Not measured: robots.txt did not permit our scanner to read the required page.
- **pricing_legibility** 96/100. 12 prices are readable without JavaScript. An enterprise tier routes to sales, which is standard practice and not counted against the score. The plans are published as Offer structured data too. The pricing page carries FAQ markup.
- **agent_aware_instrumentation** 40/100. No MCP manifest was identified at the discovery paths checked. OAuth authorization-server metadata is published; this alone does not identify an MCP endpoint. Pricing.md publishes prices in a form an agent can read directly.
- **machine_fetchable_trust** 85/100. Security.txt is published with a contact route. The homepage answers automated requests.
- **commercial_rails** not measured. Not measured: robots.txt did not permit our scanner to read the required page.
## The human door
- **steps_to_first_value** not measured. Not measured: robots.txt did not permit our scanner to read the required page.
- **required_fields** not measured. Not measured: robots.txt did not permit our scanner to read the required page.
- **verification_walls** not measured. Not measured: robots.txt did not permit our scanner to read the required page.
- **error_recovery** not measured. Not measured: robots.txt did not permit our scanner to read the required page.
---
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