--- title: "Resend agent readiness score: 88/100 · Agentrail" description: "How well AI agents can find, read, use and pay Resend — agent readiness score from Agentrail (agentrail.co)." canonical: "https://www.agentrail.co/agent-readiness/resend.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%2Fresend.com&utm%5Fcontent=company-report) Free to start. No card. Usability 20 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 78 of 90 points How resend.com scores on each of the four questions agents ask. Discovery18/20 Access28/30 Usability32/40 Paymentsnot scored yet Strongest ### Access Content without JavaScript, A2A / agent-card, and 4 more are missing. 28/30 Most to gain ### Usability Agent onboarding friction, auth.md structure, and 15 more are missing. 32/40 Most to gain ### Discovery ARD discovery, AI Catalog discovery, and 1 more are missing. 18/20 Not scored yet ### Payments ( bonus ) 4 checks partly met. Counts when scoring opens. — Every check 125checks - Passed**39** - To fix**30** - Not in the score**56** 69 checks count toward the score. The other 56 are tracked for later. Discovery18 of 202 to fix1 partly5 passed ARD discoveryRequired0 / 1 AI Catalog discoveryRecommended0 / 1 Wikipedia / Wikidata entity presenceRecommended2 / 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 \+ 7 checks not in the score 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 Access28 of 301 to fix5 partly21 passed A2A / agent-cardRecommended0 / 2 Content without JavaScriptRequired2 / 3 Schema type breadthRecommended1 / 2 Trust anchor pagesRequired1 / 2 llms.txt links resolveRecommended1 / 2 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 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 Redirect hygieneRecommended1 / 1 Page token budgetRecommended1 / 1 OpenAPI spec publishedRequired7 / 7 Developer portalRecommended6 / 6 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 Usability32 of 407 to fix10 partly13 passed Agent auth WWW-Authenticate hintRecommended0 / 1 agent\_auth endpoints reachableRecommended0 / 2 Rate limit response headersRecommended0 / 2 REST typed error modelRecommended0 / 3 MCP server-card.jsonRecommended0 / 2 Sandbox / test environmentRecommended0 / 2 Accessible document structureRecommended0 / 3 Agent onboarding frictionRecommended1 / 2 auth.md structureRecommended1 / 2 auth.md walkthrough simulationRecommended1 / 2 Agent auth discovery metadataRecommended1 / 3 MCP server / manifestRequired5 / 6 REST versioning / deprecation policyRecommended1 / 3 REST async-job patternRecommended1 / 2 Agent-friendly 404sRecommended1 / 2 API schema complexity analysisRecommended1 / 2 Function calling compatibilityRecommended1 / 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 Idempotency-Key supportRecommended3 / 3 JSON error responsesRequired4 / 4 CLI tool availableRecommended3 / 3 REST batch / bulk endpointRecommended2 / 2 Accessible names on controlsRecommended2 / 2 \+ 32 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 WebMCP supportRequiredNot 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 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