# Leitfäden zur Behebung > Erfahren Sie für jede Prüfung, was untersucht wird, warum es für Agenten relevant ist und wie Sie die erkannten Probleme beheben können. - [LLMs.txt (5 % des Scores)](https://axrush.com/guides/llms-txt): How to create a spec-compliant /llms.txt file: the missing file, headings, blockquotes, sections, links, and llms-full.txt. - [Robots.txt (9 % des Scores)](https://axrush.com/guides/robots-txt): How to configure robots.txt for AI crawlers: the missing file, unconfigured crawlers, wildcard blocks, and Sitemap directives. - [Agent Card (A2A) (3 % des Scores)](https://axrush.com/guides/agent-card): How to create an A2A agent.json card: the missing file, invalid JSON, required fields, skills, protocol version, and optional fields. - [Security.txt (3 % des Scores)](https://axrush.com/guides/security-txt): How to create a security.txt file per RFC 9116: the missing file, required fields, expired dates, and optional fields. - [Structured Data (6 % des Scores)](https://axrush.com/guides/structured-data): How to add JSON-LD structured data for AI agents: missing blocks, invalid JSON, schema.org context, @graph, entity types, and BreadcrumbList. - [Meta Tags (1 % des Scores)](https://axrush.com/guides/meta-tags): How to add AI meta tags, rel=alternate links, rel=me identity links, and Open Graph tags. - [OpenAPI Spec (4 % des Scores)](https://axrush.com/guides/api-discovery): How to create an OpenAPI specification for AI agents: the missing file, version, info, paths, and servers. - [HTTP Headers (4 % des Scores)](https://axrush.com/guides/http-headers): How to configure HTTP headers for AI agents: security headers, AI discovery Link headers, and CORS for .well-known resources. - [MCP (Model Context Protocol) (3 % des Scores)](https://axrush.com/guides/mcp-discovery): How to create a Model Context Protocol configuration: the missing file, server metadata, tools, resources, and CORS. - [HTML Rendering (11 % des Scores)](https://axrush.com/guides/html-rendering): How to fix HTML rendering for agents that do not run JavaScript: SPA-shell symptoms, semantic landmarks, a single H1, alt coverage, and a noscript fallback. - [Sitemap (2 % des Scores)](https://axrush.com/guides/sitemap): How to fix your sitemap: missing sitemap.xml, invalid XML, empty urlset, missing lastmod, stale entries, sitemap-index handling, content type, and the 50k URL limit. - [SEO Basics (5 % des Scores)](https://axrush.com/guides/seo-basics): Foundational head-tag hygiene every agent uses: title length, meta description, canonical URL, html lang, charset, viewport, and hreflang. - [TLS / HTTPS (3 % des Scores)](https://axrush.com/guides/tls-https): Serve over HTTPS, redirect HTTP to HTTPS, and configure HSTS with preload and includeSubDomains. Agents downgrade trust on insecure origins. - [Content Negotiation (4 % des Scores)](https://axrush.com/guides/content-negotiation): Serve Markdown to AI agents via Accept: text/markdown, send Vary: Accept, avoid relabeled HTML, and advertise rel=alternate fallbacks. - [RSL License (2 % des Scores)](https://axrush.com/guides/rsl): Declare Really Simple Licensing terms via a robots.txt License directive and publish a valid license.xml with the right namespace, permits vocabulary, and payment types. - [Agent Access (9 % des Scores)](https://axrush.com/guides/agent-access): AI crawler user-agents blocked by your WAF despite robots.txt allowing them, or served reduced content. Align firewall rules with your declared crawler policy. - [Crawl Efficiency (2 % des Scores)](https://axrush.com/guides/crawl-efficiency): Enable Brotli or gzip compression, support conditional GET with ETag and Last-Modified, and keep pages a size an agent's budget survives. - [AI Directives (6 % des Scores)](https://axrush.com/guides/ai-directives): How the page-level AI directives work: noindex, nosnippet, max-snippet, noarchive, nocache, data-nosnippet, and why Google-Extended does not do what most people think. - [Usage Policy (4 % des Scores)](https://axrush.com/guides/usage-policy): How to state your AI usage terms in a way machines can read, and how to stop five mechanisms contradicting each other: Content Signals, AIPREF, RSL, TDMRep and robots meta. - [HTTP Hygiene (4 % des Scores)](https://axrush.com/guides/http-hygiene): How to make your server tell an agent the truth: soft 404s, redirect chains, refused HEAD, missing charset, and 429 without Retry-After. - [AI Catalog (Nur zur Information, ohne Einfluss auf den Score)](https://axrush.com/guides/ai-catalog): How to publish an agent resource catalog: ai-catalog.json and ard.json, entry types, and why an entry pointing at nothing is worse than no catalog. - [Agent Skills (2 % des Scores)](https://axrush.com/guides/agent-skills): How to publish agent skills a site can be operated by: the index, SKILL.md frontmatter, digests, and the naming rules the specification enforces. - [WebMCP (Nur zur Information, ohne Einfluss auf den Score)](https://axrush.com/guides/webmcp): How to declare a form as a callable tool with WebMCP: toolname, tooldescription, parameter descriptions, and the deprecated namespace. - [Commerce Discovery (Nur zur Information, ohne Einfluss auf den Score)](https://axrush.com/guides/commerce-discovery): How to publish a UCP commerce profile so an agent can complete a purchase: services, schemas, payment handlers and keys. - [Auth Discovery (1 % des Scores)](https://axrush.com/guides/auth-discovery): How an agent finds its way past a 401: RFC 9728 protected-resource metadata, RFC 8414 server metadata, PKCE and dynamic registration. - [Agent Operability (7 % des Scores)](https://axrush.com/guides/agent-operability): How to make a page an agent can operate rather than only read: real controls, accessible names, labelled fields, and the entry blockers that hide everything behind them. --- Markdown-Darstellung von https://axrush.com/guides