SDThe Stunt Double Index
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Tracking 0 domains · 6 agent providers · 0 runs this week

See your business through an AI agent's eyes.

The Stunt Double Index is the public ranking of how real agents — Claude, ChatGPT, Gemini and more — experience the world's websites across discovery, checkout, delegated access and accuracy.

Market average: 0.0•Updated weekly•How we score
What agents see

A live picture of what Claude, ChatGPT, Gemini and Perplexity actually report when a buyer asks about your product.

Where you rank

Score and position in your sector across 8 categories, updated weekly. Benchmark to your competitors in one click.

Where agents get stuck

Concrete friction evidence — failing checkouts, broken extraction, missing delegated-access — shown publicly for every domain.

Top of the index

Weekly rollup across all agents and categories.

Full leaderboard
Rank
Domain
Score
Δ wk
Rank Δ

A real agent session, replayed

Scroll through an abbreviated session — exactly what an agent experienced trying to check out on a tracked domain this week.

Claude 4.7 · 18 April 2026, 09:14 UTC
Session replay · 42 turns
  1. 1

    "Buy me two tickets to the nearest Phoebe Bridgers show in Sydney, under $250 each. Use my saved card."

  2. 2

    → Navigated to ticketmaster.com.au

  3. 3

    Found event listing. Extracted 3 upcoming dates. Read policy: "tickets non-transferable".

  4. 4

    → Selected ICC Sydney · Fri 6 June · GA standing · 2 × A$219

  5. Blocked by human-verification challenge. No scoped auth available.

  6. 6

    Attempted delegated checkout: no /api/checkout endpoint, no MCP server advertised.

  7. ×

    Couldn't complete purchase. Reported to user: 'ticketmaster.com.au requires you to log in manually before I can checkout.'

Scored 30 / 100 in checkout · 20 / 100 in delegated accessReplay redacted for public view

By sector

The best and worst performers in each market. Everyone you compete with is already being tested.

What we measure

Eight categories covering the full agent journey — from whether they know you exist to whether they can complete a purchase on behalf of a human.

Brand awareness
Can agents recognise you exist?
Measures how often and how accurately leading agents mention your brand in unprompted research and comparison tasks.
Discovery
Will they pick you?
How well agents discover, shortlist and recommend your product when a user asks for a solution in your category.
Information retrieval
Can they read your site?
Quality of structured data, semantics and navigability for agents extracting pricing, specs and policies.
Market ranking
Where do you sit in the lineup?
Your relative placement vs. competitors when agents produce ranked lists for buyers in your market.
Accuracy
Do they tell the truth about you?
How often agents report correct pricing, features, availability and policies — and how often they hallucinate.
Checkout
Can an agent complete a purchase?
End-to-end completion rate for agentic checkout across guest, logged-in and delegated-access flows.
Delegated access
Do you let agents in, safely?
Availability of scoped auth (OIDC, API keys, MCP), rate limits, and tooling for delegated agent sessions.
Support & returns
Can an agent resolve an issue?
Completion rate and clarity when agents attempt to get help, cancel, return, or manage a subscription.

This week's biggest movers

Who's making their product friendlier to agents.

Most invisible to agents

Domains where agents fail most often. Big brands, small scores.

Waitlist · owners invited first

Think your domain should be on here?

The public index is open to everyone. A private view — session replays, competitor diffs, remediation playbooks — is rolling out to domain owners in waves. Join the waitlist to be invited when your domain is scanned.

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