--- title: "SerpApi agent readiness score: 52/100 · Agentrail" description: "The website is strongest in discovery, with a Wikipedia or Wikidata entity presence and discoverable developer resources, but it lacks a public API with reachable endpoints and a published OpenAPI specification." canonical: "https://www.agentrail.co/agent-readiness/serpapi.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%2Fserpapi.com&utm%5Fcontent=company-report) Free to start. No card. Usability 30 to fix - MCP server identityRecommendedHow to fix → - Public API with reachable endpointsRequiredHow to fix → - OAuth 2.0 supportRequiredHow to fix → - Scoped permissionsRecommendedHow to fix → Fixes unlock with the full report Where the score comes from 47 of 90 points How serpapi.com scores on each of the four questions agents ask. Discovery19/20 Access14/30 Usability14/40 Paymentsnot scored yet Strongest ### Discovery ARD discovery is missing. 19/20 Most to gain ### Usability MCP server identity, Public API with reachable endpoints, and 25 more are missing. 14/40 Most to gain ### Access Sitemap exists, Content without JavaScript, and 15 more are missing. 14/30 Not scored yet ### Payments ( bonus ) 5 checks partly met. Counts when scoring opens. — Every check 125checks - Passed**23** - To fix**50** - Not in the score**52** 73 checks count toward the score. The other 52 are tracked for later. Discovery19 of 201 to fix5 passed ARD discoveryRequired0 / 1 Developer resource discoverabilityRecommended3 / 3 Brand name discoverabilityRequired3 / 3 Wikipedia / Wikidata entity presenceRecommended4 / 4 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 Access14 of 3014 to fix3 partly9 passed Sitemap existsRequired0 / 2 Agent discovery fileRequired0 / 2 A2A / agent-cardRecommended0 / 2 MCP well-known discoveryRecommended0 / 2 HTTP Link headers (RFC 8288)Required0 / 1 JSON-LD structured dataRequired0 / 4 Public API/docs linked from homepageRequired0 / 3 JSON-LD entity linking (sameAs)Recommended0 / 2 Organization schema completenessRecommended0 / 2 Schema type breadthRecommended0 / 2 Trust anchor pagesRequired0 / 2 OpenAPI spec publishedRequired0 / 7 API catalog (RFC 9727)Required0 / 2 Markdown content negotiation (acceptmarkdown.com)Recommended0 / 1 Content without JavaScriptRequired2 / 3 llms.txt formattingRecommended1 / 2 Page token budgetRecommended0 / 1 Not blocked by bot detectionRequired2 / 2 robots.txt agent-user policyRequired2 / 2 llms.txt existsRequired1 / 1 Pricing info accessibleRequired3 / 3 Metadata completenessRequired2 / 2 llms.txt links resolveRecommended2 / 2 Redirect hygieneRecommended1 / 1 Developer portalRecommended6 / 6 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 Sitemap freshness (lastmod)RecommendedNot 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 Usability14 of 4025 to fix2 partly9 passed MCP server identityRecommended0 / 1 Public API with reachable endpointsRequired0 / 7 OAuth 2.0 supportRequired0 / 5 Scoped permissionsRecommended0 / 5 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 WebMCP supportRequired0 / 5 Rate limit response headersRecommended0 / 2 Idempotency-Key supportRecommended0 / 3 JSON error responsesRequired0 / 4 REST typed error modelRecommended0 / 3 REST async-job patternRecommended0 / 2 MCP server-card.jsonRecommended0 / 2 Sandbox / test environmentRecommended0 / 2 REST batch / bulk endpointRecommended0 / 2 Accessible document structureRecommended0 / 3 MCP Apps UI qualityRecommended0 / 4 MCP App view reachableRecommended0 / 4 API schema complexity analysisRecommended0 / 2 Function calling compatibilityRecommended0 / 2 MCP resource qualityRecommended0 / 3 Agent onboarding frictionRecommended1 / 2 Agent-friendly 404sRecommended1 / 2 MCP tool namingRecommended2 / 2 MCP server / manifestRequired6 / 6 MCP error handlingRecommended2 / 2 MCP modern transportRecommended1 / 1 CLI tool availableRecommended3 / 3 MCP tool annotationsRecommended2 / 2 MCP resources exposedRecommended3 / 3 Accessible names on controlsRecommended2 / 2 MCP Apps supportRecommended4 / 4 \+ 26 checks not in the score MCP tool descriptionsRecommendedNot counted MCP parameter schemasRecommendedNot counted MCP tool listingRecommendedNot counted MCP auth mechanismRecommendedNot counted MCP OAuth metadataRecommendedNot counted MCP PKCE S256 supportRecommendedNot counted Web Bot Auth directoryEmergingNot counted auth.md walkthrough simulationRecommendedNot counted REST versioning / deprecation policyRecommendedNot counted REST pagination 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 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 A2UI / generative UI supportEmergingNot counted MCP App view CSPRecommendedNot counted PaymentsNot scored yet5 partly MPP payment protocolRequired0 / 2 x402 payment protocolRequired0 / 2 UCP - Universal Commerce ProtocolRequired0 / 3 ACP - Agentic Commerce ProtocolRequired0 / 3 AP2 - Agent Payments ProtocolRecommended0 / 3 \+ 1 check not in the score ACP delegate paymentRecommendedNot counted