--- title: "Last9 agent readiness score: 88/100 · Agentrail" description: "The website is strongest in discovery, passing checks for developer resource and brand name discoverability, but misses checks for the developer portal and agent-friendly not-found pages." canonical: "https://www.agentrail.co/agent-readiness/last9.io" --- 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%2Flast9.io&utm%5Fcontent=company-report) Free to start. No card. Access 14 to fix - Content without JavaScriptRequiredHow to fix → - A2A / agent-cardRecommendedHow to fix → - pricing.md existsEmergingHow to fix → - NLWeb Schema FeedsEmergingHow to fix → Fixes unlock with the full report Where the score comes from 79 of 90 points How last9.io scores on each of the four questions agents ask. Discovery18/20 Access25/30 Usability36/40 Paymentsnot scored yet Strongest ### Discovery ARD discovery and Wikipedia / Wikidata entity presence are missing. 18/20 Most to gain ### Access Content without JavaScript, A2A / agent-card, and 5 more are missing. 25/30 Most to gain ### Usability OAuth Protected Resource metadata (RFC 9728), auth.md exists, and 6 more are missing. 36/40 Not scored yet ### Payments ( bonus ) 6 checks partly met. Counts when scoring opens. — Every check 125checks - Passed**26** - To fix**23** - Not in the score**76** 49 checks count toward the score. The other 76 are tracked for later. Discovery18 of 201 to fix1 partly4 passed ARD discoveryRequired0 / 1 Wikipedia / Wikidata entity presenceRecommended2 / 4 Developer resource discoverabilityRecommended3 / 3 Brand name discoverabilityRequired3 / 3 robots.txt AI crawler policyRequired2 / 2 NPM/PyPI SDK packageRecommended1 / 1 \+ 9 checks not in the score AI Catalog discoveryRecommendedNot counted ARD entry validityRecommendedNot counted ARD trust manifestRecommendedNot counted Category share of voiceRecommendedNot counted Listed in MCP registriesRecommendedNot counted Agent platform configsEmergingNot counted Agent Plugins manifestEmergingNot counted Registry brandingEmergingNot counted ChatGPT app listedRecommendedNot counted Access25 of 303 to fix4 partly19 passed A2A / agent-cardRecommended0 / 2 Sitemap freshness (lastmod)Recommended0 / 1 Developer portalRecommended0 / 6 Content without JavaScriptRequired2 / 3 Schema type breadthRecommended1 / 2 Page token budgetRecommended0 / 1 API catalog (RFC 9727)Required1 / 2 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 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 Markdown content negotiation (acceptmarkdown.com)Recommended1 / 1 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 Usability36 of 407 to fix1 partly3 passed 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 Sandbox / test environmentRecommended0 / 2 Agent-friendly 404sRecommended1 / 2 CLI tool availableRecommended3 / 3 Accessible document structureRecommended3 / 3 Accessible names on controlsRecommended2 / 2 \+ 51 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 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 MCP server / manifestRequiredNot counted MCP error handlingRecommendedNot counted MCP modern transportRecommendedNot counted WebMCP supportRequiredNot 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 MCP tool annotationsRecommendedNot counted MCP server-card.jsonRecommendedNot counted Product + docs MCP coverageRecommendedNot counted REST batch / bulk endpointRecommendedNot 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 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