--- title: "Mercury agent readiness score: 57/100 · Agentrail" description: "How well AI agents can find, read, use and pay Mercury — agent readiness score from Agentrail (agentrail.co)." canonical: "https://www.agentrail.co/agent-readiness/mercury.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%2Fmercury.com&utm%5Fcontent=company-report) Free to start. No card. Usability 24 to fix - OAuth 2.0 supportRequiredHow to fix → - Scoped permissionsRecommendedHow to fix → - MCP auth mechanismRecommendedHow to fix → - MCP OAuth metadataRecommendedHow to fix → Fixes unlock with the full report Where the score comes from 51 of 90 points How mercury.com scores on each of the four questions agents ask. Discovery14/20 Access19/30 Usability18/40 Paymentsnot scored yet Strongest ### Discovery ARD trust manifest, Brand name discoverability, and 1 more are missing. 14/20 Most to gain ### Usability OAuth 2.0 support, Scoped permissions, and 19 more are missing. 18/40 Most to gain ### Access Content without JavaScript, Agent discovery file, and 9 more are missing. 19/30 Not scored yet ### Payments ( bonus ) 4 checks partly met. Counts when scoring opens. — Every check 125checks - Passed**23** - To fix**39** - Not in the score**63** 62 checks count toward the score. The other 63 are tracked for later. Discovery14 of 203 to fix5 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 robots.txt AI crawler policyRequired2 / 2 Listed in MCP registriesRecommended1 / 1 \+ 7 checks not in the score Category share of voiceRecommendedNot counted Developer resource discoverabilityRecommendedNot counted NPM/PyPI SDK packageRecommendedNot counted Agent platform configsEmergingNot counted Agent Plugins manifestEmergingNot counted Registry brandingEmergingNot counted ChatGPT app listedRecommendedNot counted Access19 of 306 to fix5 partly13 passed Agent discovery fileRequired0 / 2 A2A / agent-cardRecommended0 / 2 llms.txt existsRequired0 / 1 llms.txt formattingRecommended0 / 2 OpenAPI spec publishedRequired0 / 7 Markdown content negotiation (acceptmarkdown.com)Recommended0 / 1 Content without JavaScriptRequired2 / 3 JSON-LD structured dataRequired2 / 4 Schema type breadthRecommended1 / 2 Trust anchor pagesRequired1 / 2 API catalog (RFC 9727)Required1 / 2 Sitemap existsRequired2 / 2 Not blocked by bot detectionRequired2 / 2 MCP well-known discoveryRecommended2 / 2 HTTP Link headers (RFC 8288)Required1 / 1 Sitemap freshness (lastmod)Recommended1 / 1 robots.txt agent-user policyRequired2 / 2 Pricing info accessibleRequired3 / 3 JSON-LD entity linking (sameAs)Recommended2 / 2 Metadata completenessRequired2 / 2 Organization schema completenessRecommended2 / 2 Redirect hygieneRecommended1 / 1 Page token budgetRecommended1 / 1 Agent crawler reachabilityRecommended2 / 2 \+ 18 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 Public API/docs linked from homepageRequiredNot counted Agent instruction / when-to-useRequiredNot counted Skills.sh skill qualityEmergingNot counted llms.txt links resolveRecommendedNot counted Markdown alternate linkEmergingNot counted Markdown frontmatter metadataEmergingNot counted Code fence validityEmergingNot counted Content behind authRecommendedNot counted Developer portalRecommendedNot counted Markdown agent docsEmergingNot counted Bot-UA markdown servingEmergingNot counted Usability18 of 4017 to fix4 partly5 passed OAuth 2.0 supportRequired0 / 5 Scoped permissionsRecommended0 / 5 MCP OAuth metadataRecommended0 / 2 MCP PKCE S256 supportRecommended0 / 2 OAuth Protected Resource metadata (RFC 9728)Required0 / 2 auth.md walkthrough simulationRecommended0 / 2 Agent auth discovery metadataRecommended0 / 3 Agent auth WWW-Authenticate hintRecommended0 / 1 agent\_auth endpoints reachableRecommended0 / 2 Rate limit response headersRecommended0 / 2 Idempotency-Key supportRecommended0 / 3 REST typed error modelRecommended0 / 3 REST async-job patternRecommended0 / 2 Sandbox / test environmentRecommended0 / 2 REST batch / bulk endpointRecommended0 / 2 API schema complexity analysisRecommended0 / 2 Function calling compatibilityRecommended0 / 2 MCP auth mechanismRecommended1 / 2 auth.md structureRecommended1 / 2 MCP server / manifestRequired5 / 6 Agent-friendly 404sRecommended1 / 2 auth.md existsRequired2 / 2 JSON error responsesRequired4 / 4 MCP server-card.jsonRecommended2 / 2 Accessible document structureRecommended3 / 3 Accessible names on controlsRecommended2 / 2 \+ 36 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 Agent onboarding frictionRecommendedNot counted Web Bot Auth directoryEmergingNot counted MCP error handlingRecommendedNot counted MCP modern transportRecommendedNot counted WebMCP supportRequiredNot counted REST versioning / deprecation policyRecommendedNot counted REST pagination patternRecommendedNot counted CLI tool availableRecommendedNot 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 yet4 partly MPP payment protocolRequired0 / 2 x402 payment protocolRequired0 / 2 UCP - Universal Commerce ProtocolRequired0 / 3 AP2 - Agent Payments ProtocolRecommended0 / 3 \+ 2 checks not in the score ACP - Agentic Commerce ProtocolRequiredNot counted ACP delegate paymentRecommendedNot counted