--- title: "assistant-ui agent readiness score: 83/100 · Agentrail" description: "The website is strongest in usability for agents using the product, with checks passed for MCP server/manifest and WebMCP support, but missed checks for a developer portal and ARD discovery." canonical: "https://www.agentrail.co/agent-readiness/assistant-ui.com" --- Full report ## See what each check found, and how to fix it. Evidence, step-by-step fixes and your score over time, for your own site. [Get started →](https://app.agentrail.co/login?utm%5Fsource=agentrail.co&utm%5Fmedium=website&utm%5Fcampaign=agent-readiness%2Fassistant-ui.com&utm%5Fcontent=company-report) Free to start. No card. Access 19 to fix - Content without JavaScriptRequiredHow to fix → - A2A / agent-cardRecommendedHow to fix → - NLWeb Schema FeedsEmergingHow to fix → - Agent mode viewEmergingHow to fix → Fixes unlock with the full report Where the score comes from 75 of 90 points How assistant-ui.com scores on each of the four questions agents ask. Discovery18/20 Access18/30 Usability39/40 Paymentsnot scored yet Strongest ### Usability MCP server identity, OAuth Protected Resource metadata (RFC 9728), and 9 more are missing. 39/40 Most to gain ### Access Content without JavaScript, A2A / agent-card, and 10 more are missing. 18/30 Most to gain ### Discovery ARD discovery and Wikipedia / Wikidata entity presence are missing. 18/20 Not scored yet ### Payments ( bonus ) 6 checks partly met. Counts when scoring opens. — Every check 125checks - Passed**28** - To fix**31** - Not in the score**66** 59 checks count toward the score. The other 66 are tracked for later. Discovery18 of 202 to fix5 passed ARD discoveryRequired0 / 1 Wikipedia / Wikidata entity presenceRecommended0 / 4 Developer resource discoverabilityRecommended3 / 3 Brand name discoverabilityRequired3 / 3 robots.txt AI crawler policyRequired2 / 2 Listed in MCP registriesRecommended1 / 1 NPM/PyPI SDK packageRecommended1 / 1 \+ 8 checks not in the score AI Catalog discoveryRecommendedNot counted ARD entry validityRecommendedNot counted ARD trust manifestRecommendedNot counted Category share of voiceRecommendedNot counted Agent platform configsEmergingNot counted Agent Plugins manifestEmergingNot counted Registry brandingEmergingNot counted ChatGPT app listedRecommendedNot counted Access18 of 309 to fix3 partly14 passed A2A / agent-cardRecommended0 / 2 Sitemap freshness (lastmod)Recommended0 / 1 JSON-LD structured dataRequired0 / 4 JSON-LD entity linking (sameAs)Recommended0 / 2 Organization schema completenessRecommended0 / 2 Schema type breadthRecommended0 / 2 Trust anchor pagesRequired0 / 2 Developer portalRecommended0 / 6 Markdown content negotiation (acceptmarkdown.com)Recommended0 / 1 Content without JavaScriptRequired2 / 3 llms.txt formattingRecommended1 / 2 Page token budgetRecommended0 / 1 Sitemap existsRequired2 / 2 Not blocked by bot detectionRequired2 / 2 Agent discovery fileRequired2 / 2 MCP well-known discoveryRecommended2 / 2 HTTP Link headers (RFC 8288)Required1 / 1 robots.txt agent-user policyRequired2 / 2 llms.txt existsRequired1 / 1 Pricing info accessibleRequired3 / 3 Public API/docs linked from homepageRequired3 / 3 Metadata completenessRequired2 / 2 llms.txt links resolveRecommended2 / 2 Redirect hygieneRecommended1 / 1 API catalog (RFC 9727)Required2 / 2 Agent crawler reachabilityRecommended2 / 2 \+ 16 checks not in the score Agent Skills index conformance (v0.2.0)EmergingNot counted Listed on skills.shEmergingNot counted pricing.md existsEmergingNot counted NLWeb Schema FeedsEmergingNot counted Agent mode viewEmergingNot counted Markdown URL fallbackEmergingNot counted Modular llms.txt per product areaEmergingNot counted Agent instruction / when-to-useRequiredNot counted Skills.sh skill qualityEmergingNot counted Markdown alternate linkEmergingNot counted Markdown frontmatter metadataEmergingNot counted Code fence validityEmergingNot counted Content behind authRecommendedNot counted OpenAPI spec publishedRequiredNot counted Markdown agent docsEmergingNot counted Bot-UA markdown servingEmergingNot counted Usability39 of 4010 to fix1 partly9 passed MCP server identityRecommended0 / 1 OAuth Protected Resource metadata (RFC 9728)Required0 / 2 auth.md existsRequired0 / 2 auth.md structureRecommended0 / 2 Agent auth discovery metadataRecommended0 / 3 Agent auth WWW-Authenticate hintRecommended0 / 1 agent\_auth endpoints reachableRecommended0 / 2 MCP tool annotationsRecommended0 / 2 MCP server-card.jsonRecommended0 / 2 Sandbox / test environmentRecommended0 / 2 Agent-friendly 404sRecommended1 / 2 MCP tool namingRecommended2 / 2 MCP server / manifestRequired6 / 6 MCP error handlingRecommended2 / 2 MCP modern transportRecommended1 / 1 WebMCP supportRequired5 / 5 CLI tool availableRecommended3 / 3 MCP resources exposedRecommended3 / 3 Accessible document structureRecommended3 / 3 Accessible names on controlsRecommended2 / 2 \+ 42 checks not in the score MCP tool descriptionsRecommendedNot counted MCP parameter schemasRecommendedNot counted MCP tool listingRecommendedNot counted Public API with reachable endpointsRequiredNot counted OAuth 2.0 supportRequiredNot counted Scoped permissionsRecommendedNot counted MCP auth mechanismRecommendedNot counted MCP OAuth metadataRecommendedNot counted MCP PKCE S256 supportRecommendedNot counted Agent onboarding frictionRecommendedNot counted Web Bot Auth directoryEmergingNot counted auth.md walkthrough simulationRecommendedNot counted Rate limit response headersRecommendedNot counted Idempotency-Key supportRecommendedNot counted JSON error responsesRequiredNot counted REST typed error modelRecommendedNot counted REST versioning / deprecation policyRecommendedNot counted REST pagination patternRecommendedNot counted REST async-job patternRecommendedNot counted Multi-language SDK packagesRecommendedNot counted NLWeb /ask endpointEmergingNot counted NLWeb streaming supportEmergingNot counted REST response schema coverageRecommendedNot counted Product + docs MCP coverageRecommendedNot counted REST batch / bulk endpointRecommendedNot counted GraphQL typed error modelRecommendedNot counted GraphQL versioning / deprecation policyRecommendedNot counted GraphQL pagination patternRecommendedNot counted GraphQL async-job patternRecommendedNot counted GraphQL schema description coverageRecommendedNot counted GraphQL batch mutationsRecommendedNot counted Native interactive controlsRecommendedNot counted Form control labelingRecommendedNot counted Accessibility-tree injection safety (bonus)RecommendedNot counted MCP Apps supportRecommendedNot counted A2UI / generative UI supportEmergingNot counted MCP Apps UI qualityRecommendedNot counted MCP App view reachableRecommendedNot counted MCP App view CSPRecommendedNot counted API schema complexity analysisRecommendedNot counted Function calling compatibilityRecommendedNot counted MCP resource qualityRecommendedNot counted PaymentsNot scored yet6 partly MPP payment protocolRequired0 / 2 x402 payment protocolRequired0 / 2 UCP - Universal Commerce ProtocolRequired0 / 3 ACP - Agentic Commerce ProtocolRequired0 / 3 ACP delegate paymentRecommended0 / 3 AP2 - Agent Payments ProtocolRecommended0 / 3