Typed page-scoped tools reduce agent targeting errors compared to DOM actuation
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type: ScholarlyArticle
type: Claim
type: RA
abstract: Typed page-scoped tools reduce agent targeting errors compared to DOM actuation
text: Typed page-scoped tools reduce agent targeting errors compared to DOM actuation
date created: 2026-07-15T00:26:59.257Z
date published: 2026-07-15T00:26:59.257Z
date modified: 2026-07-15T00:26:59.257Z
author: Alice Davis
publisher: Isonomia
is part of: Testing WebMCP
has conclusion: https://www.isonomia.app/c/ff71f7d3f9cf6d7a4c1e7a7bbf6c3a7edb58e20052d3cd95975cb4a10b40c579
has premise: https://www.isonomia.app/c/6774ec26e900f3f087008e16ca939f5ceaf365953785a3014432da41e95a52e0
has premise: https://www.isonomia.app/c/a0f778c67426f19ee14eefb08d449da522ce0cde4066c2927071dad481c76ddf
has premise: https://www.isonomia.app/c/a1db5fa0098ce4f6dae01a19153fad66771a03615099687816e30241fd5f9cfc
uses scheme: Causal (If cause then effect)
applies scheme key: causal
dialectical status: PropertyValue
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  incoming supports: 0
  critical questions required: 2
  critical questions answered: 0
  critical questions open: 2
  standing score: 0.5
  is tested: false
attestation: PropertyValue
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  retrieved at: 2026-08-30T19:16:15.803Z

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Testing WebMCP
type: CreativeWork

https://www.isonomia.app/c/ff71f7d3f9cf6d7a4c1e7a7bbf6c3a7edb58e20052d3cd95975cb4a10b40c579
type: Claim
type: InformationNode
text: Typed page-scoped tools reduce agent targeting errors compared to DOM actuation

https://www.isonomia.app/c/6774ec26e900f3f087008e16ca939f5ceaf365953785a3014432da41e95a52e0
type: Claim
type: InformationNode
text: DOM-driving agents must infer selectors and page state from pixels or markup, which is the dominant source of mis-targeted actions in browser-agent evaluations

https://www.isonomia.app/c/a0f778c67426f19ee14eefb08d449da522ce0cde4066c2927071dad481c76ddf
type: Claim
type: InformationNode
text: A page-scoped tool registry binds the deliberation id server-side and validates arguments against a schema, structurally removing the cross-deliberation targeting mistake

https://www.isonomia.app/c/a1db5fa0098ce4f6dae01a19153fad66771a03615099687816e30241fd5f9cfc
type: Claim
type: InformationNode
text: The stdio MCP deployment of this same registry logged deliberationId confusion as its largest misuse class, and the curried WebMCP variant eliminated it in dogfood

Causal (If cause then effect)
type: DefinedTerm
type: Scheme
term code: causal