Entity Support and Resistance

Entity Support and Resistance is a ai visibility metric used in AI SEO. Recurring floors and ceilings in entity visibility/citation performance, borrowing support/resistance language. The term or framework is attributed to Paul Truscott and is documented in 2026.^[1]

AI SEO Wiki records the attribution as Explicit first-party coinage, with a confidence rating of High. This rating concerns the documentary evidence for the term's origin; it does not imply that the underlying idea is unique to one practitioner or that the terminology has become an industry standard.^[2]

Definition

Recurring floors and ceilings in entity visibility/citation performance, borrowing support/resistance language. In practical usage, the concept is most useful when its measurement unit, observation window, source set, or decision context is stated explicitly. This is particularly important in AI-mediated search, where answers can vary between models, prompts, retrieval systems, and repeated runs.

Origin and attribution

Entity Support and Resistance is attributed in the available documentary record to Paul Truscott. The registry dates the term to 2026 and classifies the evidence as Explicit first-party coinage.^[1]

Explicitly listed among Truscott's coined measurement frameworks. This qualification is retained because AI-search terminology often spreads rapidly through conference talks, social posts, vendor material, and practitioner communities before a stable publication record exists.

An additional source provides independent or supporting evidence for the terminology or attribution.^[2]

Role in AI SEO

Entity Support and Resistance belongs to the measurement layer of AI SEO. Conventional ranking reports do not fully describe systems that can mention a brand without linking to it, cite one source while using another, or change their answer across repeated generations. The concept therefore treats AI visibility as a time series or repeated-observation problem rather than a single fixed ranking.

It is best interpreted alongside other measures rather than as a standalone score. Related diagnostics include Selection Rate, Citation RSI, and Visibility Drawdown.

Application and interpretation

Application normally begins with a defined prompt set, model or engine, observation cadence, and counting rule. A practitioner can then compare Entity Support and Resistance across time, categories, competitors, or source types. Changes should be interpreted against an entity's own baseline and validated with underlying citations, mentions, retrieval evidence, or prompt-level outputs.

Because AI outputs are stochastic, a single run is rarely sufficient evidence of a trend. Repeated measurements and a documented sampling method reduce the risk of treating random answer variation as a meaningful visibility change.

Related concepts

Limitations and attribution notes

The attribution evidence for Entity Support and Resistance is comparatively strong, but the existence of a documented term origin does not establish that every underlying mechanism was first discovered by the named creator. Similar ideas can arise independently under different terminology.

The field itself changes rapidly. Model behaviour, retrieval systems, citation interfaces, and measurement tooling can change without the terminology changing, so operational claims should be re-tested against current systems.

See also

• Citation RSI
• Visibility Bollinger Bands
• Visibility Drawdown
• Selection Rate
• AI SEO

References