--- title: "Clerk agent readiness score: 89/100 · Agentrail" description: "How well AI agents can find, read, use and pay Clerk — agent readiness score from Agentrail (agentrail.co)." canonical: "https://www.agentrail.co/agent-readiness/clerk.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%2Fclerk.com&utm%5Fcontent=company-report) Free to start. No card. Usability 13 to fix - Agent onboarding frictionRecommendedHow to fix → - Web Bot Auth directoryEmergingHow to fix → - auth.md structureRecommendedHow to fix → - auth.md walkthrough simulationRecommendedHow to fix → Fixes unlock with the full report Where the score comes from 81 of 90 points How clerk.com scores on each of the four questions agents ask. Discovery16/20 Access29/30 Usability36/40 Paymentsnot scored yet Strongest ### Access Content without JavaScript, A2A / agent-card, and 1 more are missing. 29/30 Most to gain ### Discovery ARD trust manifest, Brand name discoverability, and 1 more are missing. 16/20 Most to gain ### Usability Agent onboarding friction, auth.md structure, and 8 more are missing. 36/40 Not scored yet ### Payments ( bonus ) 6 checks partly met. Counts when scoring opens. — Every check 125checks - Passed**52** - To fix**22** - Not in the score**51** 74 checks count toward the score. The other 51 are tracked for later. Discovery16 of 203 to fix7 passed ARD trust manifestRecommended0 / 2 Brand name discoverabilityRequired0 / 3 Wikipedia / Wikidata entity presenceRecommended0 / 4 ARD discoveryRequired1 / 1 AI Catalog discoveryRecommended1 / 1 ARD entry validityRecommended2 / 2 Developer resource discoverabilityRecommended3 / 3 robots.txt AI crawler policyRequired2 / 2 Listed in MCP registriesRecommended1 / 1 NPM/PyPI SDK packageRecommended1 / 1 \+ 5 checks not in the score Category share of voiceRecommendedNot counted Agent platform configsEmergingNot counted Agent Plugins manifestEmergingNot counted Registry brandingEmergingNot counted ChatGPT app listedRecommendedNot counted Access29 of 302 to fix1 partly24 passed A2A / agent-cardRecommended0 / 2 Schema type breadthRecommended0 / 2 Content without JavaScriptRequired2 / 3 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 Sitemap freshness (lastmod)Recommended1 / 1 robots.txt agent-user policyRequired2 / 2 llms.txt existsRequired1 / 1 llms.txt formattingRecommended2 / 2 JSON-LD structured dataRequired4 / 4 Pricing info accessibleRequired3 / 3 Public API/docs linked from homepageRequired3 / 3 JSON-LD entity linking (sameAs)Recommended2 / 2 Metadata completenessRequired2 / 2 Organization schema completenessRecommended2 / 2 Trust anchor pagesRequired2 / 2 llms.txt links resolveRecommended2 / 2 Redirect hygieneRecommended1 / 1 Page token budgetRecommended1 / 1 OpenAPI spec publishedRequired7 / 7 Developer portalRecommended6 / 6 API catalog (RFC 9727)Required2 / 2 Markdown content negotiation (acceptmarkdown.com)Recommended1 / 1 Agent crawler reachabilityRecommended2 / 2 \+ 15 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 Markdown agent docsEmergingNot counted Bot-UA markdown servingEmergingNot counted Usability36 of 404 to fix6 partly21 passed agent\_auth endpoints reachableRecommended0 / 2 Rate limit response headersRecommended0 / 2 Idempotency-Key supportRecommended0 / 3 Sandbox / test environmentRecommended0 / 2 Agent onboarding frictionRecommended1 / 2 auth.md structureRecommended1 / 2 auth.md walkthrough simulationRecommended1 / 2 Agent auth discovery metadataRecommended1 / 3 MCP server / manifestRequired5 / 6 REST async-job patternRecommended1 / 2 Public API with reachable endpointsRequired7 / 7 OAuth 2.0 supportRequired5 / 5 Scoped permissionsRecommended5 / 5 MCP auth mechanismRecommended2 / 2 MCP OAuth metadataRecommended2 / 2 MCP PKCE S256 supportRecommended2 / 2 OAuth Protected Resource metadata (RFC 9728)Required2 / 2 auth.md existsRequired2 / 2 Agent auth WWW-Authenticate hintRecommended1 / 1 WebMCP supportRequired5 / 5 JSON error responsesRequired4 / 4 REST typed error modelRecommended3 / 3 REST versioning / deprecation policyRecommended3 / 3 CLI tool availableRecommended3 / 3 MCP server-card.jsonRecommended2 / 2 REST batch / bulk endpointRecommended2 / 2 Agent-friendly 404sRecommended2 / 2 Accessible document structureRecommended3 / 3 Accessible names on controlsRecommended2 / 2 API schema complexity analysisRecommended2 / 2 Function calling compatibilityRecommended2 / 2 \+ 31 checks not in the score MCP tool descriptionsRecommendedNot counted MCP parameter schemasRecommendedNot counted MCP server identityRecommendedNot counted MCP tool listingRecommendedNot counted MCP tool namingRecommendedNot counted Web Bot Auth directoryEmergingNot counted MCP error handlingRecommendedNot counted MCP modern transportRecommendedNot counted REST pagination patternRecommendedNot counted Multi-language SDK packagesRecommendedNot counted NLWeb /ask endpointEmergingNot counted NLWeb streaming supportEmergingNot counted REST response schema coverageRecommendedNot counted MCP tool annotationsRecommendedNot counted Product + docs MCP coverageRecommendedNot counted MCP resources exposedRecommendedNot 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 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