--- title: "Developer Tools & APIs: AI visibility ranking" description: "Developer Tools & APIs websites ranked by Good for Bots Score, with each site's readable base, agent layer and penalties, and how often the category passes each check." url: "https://goodforbots.com/rankings/developer-tools" --- # Developer Tools & APIs, ranked Sites in Developer Tools & APIs, ordered by how well language models and agents can read them. Each row splits the score into the readable base, the agent layer and penalties. [How the score is calculated](https://goodforbots.com/standards#scoring) · [Browse Developer Tools & APIs in the directory](https://goodforbots.com/directory/category/developer-tools) - Ranked: 39 sites - Median score: 63 - New this week: 6 - Latest scan: 27 Oct 2026 - Bands: Excellent 3, Good 7, Fair 23, Poor 6 ## Ranking Search by name or domain: https://goodforbots.com/rankings/developer-tools.md?band=excellent&capability=auth-md&q={query}, at most 120 characters. 1 site match Excellent ([remove](https://goodforbots.com/rankings/developer-tools.md?capability=auth-md)), auth.md ([remove](https://goodforbots.com/rankings/developer-tools.md?band=excellent)). Ordered by place, best first. Also: [place, lowest first](https://goodforbots.com/rankings/developer-tools.md?band=excellent&capability=auth-md&sort=score-asc) · [readable base](https://goodforbots.com/rankings/developer-tools.md?band=excellent&capability=auth-md&sort=base) · [agent layer](https://goodforbots.com/rankings/developer-tools.md?band=excellent&capability=auth-md&sort=agent) · [fewest penalties](https://goodforbots.com/rankings/developer-tools.md?band=excellent&capability=auth-md&sort=penalties) · [most agent capabilities](https://goodforbots.com/rankings/developer-tools.md?band=excellent&capability=auth-md&sort=capabilities) · [site name, A–Z](https://goodforbots.com/rankings/developer-tools.md?band=excellent&capability=auth-md&sort=host) · [newest listings](https://goodforbots.com/rankings/developer-tools.md?band=excellent&capability=auth-md&sort=new). | Place | Site | Score | Readable base | Agent layer | Penalties | Capabilities | |---:|---|---|---:|---:|---|---| | 2 | [ProxyJam](https://goodforbots.com/r/proxyjam.com): proxyjam.com | Score 95 of 100, Excellent, 3 agent capabilities | 50 | 45 | 0 | 3 (Agent Skills discovery, API Catalog, auth.md) | Places follow the score; on an equal score, more agent capabilities (the +N on the badge) come first. Sites equal on both share a place. Filters and other orders hide rows but never renumber them. “(Pro)” marks a Pro listing. Pro never changes a score or a place. [What Pro includes](https://goodforbots.com/pricing#pro). “(new)” marks a listing added in the last seven days. Every report is also available as Markdown at https://goodforbots.com/r/{host}.md. ## Filters Band (any of them): [Excellent](https://goodforbots.com/rankings/developer-tools.md?capability=auth-md) 3 · [Good](https://goodforbots.com/rankings/developer-tools.md?band=excellent&band=good&capability=auth-md) 7 · [Fair](https://goodforbots.com/rankings/developer-tools.md?band=excellent&band=fair&capability=auth-md) 23 · [Poor](https://goodforbots.com/rankings/developer-tools.md?band=excellent&band=poor&capability=auth-md) 6 Platform (any of them): [Astro](https://goodforbots.com/rankings/developer-tools.md?band=excellent&platform=astro&capability=auth-md) 2 · [Lovable](https://goodforbots.com/rankings/developer-tools.md?band=excellent&platform=lovable&capability=auth-md) 2 · [Next.js](https://goodforbots.com/rankings/developer-tools.md?band=excellent&platform=nextjs&capability=auth-md) 15 · [Nuxt](https://goodforbots.com/rankings/developer-tools.md?band=excellent&platform=nuxt&capability=auth-md) 1 · [SvelteKit](https://goodforbots.com/rankings/developer-tools.md?band=excellent&platform=sveltekit&capability=auth-md) 1 · [WordPress](https://goodforbots.com/rankings/developer-tools.md?band=excellent&platform=wordpress&capability=auth-md) 4 Capability (every one): [API catalog](https://goodforbots.com/rankings/developer-tools.md?band=excellent&capability=api-catalog&capability=auth-md) 3 · [auth.md](https://goodforbots.com/rankings/developer-tools.md?band=excellent) 2 · [A2A agent card](https://goodforbots.com/rankings/developer-tools.md?band=excellent&capability=a2a-agent-card&capability=auth-md) 1 · [Agent Skills index](https://goodforbots.com/rankings/developer-tools.md?band=excellent&capability=agent-skills-index&capability=auth-md) 3 · [x402 / MPP payments](https://goodforbots.com/rankings/developer-tools.md?band=excellent&capability=auth-md&capability=x402-mpp) 1 ## How Developer Tools & APIs sites do on each check ### Missed most often - [Markdown negotiation](https://goodforbots.com/standards#markdown-negotiation): 90%. Missing or partial on 35 of the 39 sites it applies to. [Guide: How to serve Markdown to AI agents with content negotiation](https://goodforbots.com/guides/markdown-negotiation) - [Typed discovery links](https://goodforbots.com/standards#link-headers): 90%. Missing or partial on 35 of the 39 sites it applies to. [Guide: How to serve Markdown to AI agents with content negotiation](https://goodforbots.com/guides/markdown-negotiation) - [AI usage preferences](https://goodforbots.com/standards#content-signals): 82%. Missing or partial on 32 of the 39 sites it applies to. [Guide: How to write robots.txt rules for AI crawlers](https://goodforbots.com/guides/robots-txt-ai-crawlers) ### Where the top 10 pull ahead - [Markdown at its own URL](https://goodforbots.com/standards#llms-full-txt): 10 of 10 in the top 10 pass it, against 2 of 29 below. - [llms.txt quality](https://goodforbots.com/standards#llms-txt-quality): 9 of 10 in the top 10 pass it, against 9 of 29 below. - [llms.txt](https://goodforbots.com/standards#llms-txt): 10 of 10 in the top 10 pass it, against 14 of 29 below. ### Every check The share of sites passing each check on their latest scan. A check that does not apply to a site leaves it out of that check's share. #### Readable base Share of sites with a full pass. | Check | This ranking | All sites | Top 10 | Below | |---|---:|---:|---:|---:| | [robots.txt](https://goodforbots.com/standards#robots-txt) | 97% | 98% | 100% | 97% | | [Sitemaps](https://goodforbots.com/standards#sitemap) | 97% | 96% | 100% | 97% | | [schema.org structured data](https://goodforbots.com/standards#schema-org) | 82% | 72% | 100% | 76% | | [Semantic HTML](https://goodforbots.com/standards#semantic-html) | 56% | 56% | 90% | 45% | | [Crawlable navigation links](https://goodforbots.com/standards#crawlable-navigation) | 95% | 92% | 100% | 93% | | [Names for links and buttons](https://goodforbots.com/standards#control-names) | 85% | 88% | 90% | 83% | | [Names and semantics for form fields](https://goodforbots.com/standards#form-semantics) | 75% | 72% | 75% | 75% | | [Roles, states and relationships for controls](https://goodforbots.com/standards#control-semantics) | 72% | 73% | 70% | 72% | | [Canonical URL](https://goodforbots.com/standards#canonical-url) | 95% | 93% | 89% | 97% | | [Section links](https://goodforbots.com/standards#section-links) | 88% | 88% | 100% | 83% | #### Agent layer Share of sites with a full pass. | Check | This ranking | All sites | Top 10 | Below | |---|---:|---:|---:|---:| | [llms.txt](https://goodforbots.com/standards#llms-txt) | 62% | 55% | 100% | 48% | | [llms.txt quality](https://goodforbots.com/standards#llms-txt-quality) | 46% | 38% | 90% | 31% | | [Markdown at its own URL](https://goodforbots.com/standards#llms-full-txt) | 31% | 23% | 100% | 7% | | [Markdown negotiation](https://goodforbots.com/standards#markdown-negotiation) | 10% | 8% | 30% | 3% | | [Explicit AI crawler rules](https://goodforbots.com/standards#ai-crawler-rules) | 28% | 34% | 50% | 21% | | [AI usage preferences](https://goodforbots.com/standards#content-signals) | 18% | 7% | 50% | 7% | | [Typed discovery links](https://goodforbots.com/standards#link-headers) | 10% | 6% | 30% | 3% | #### Penalties Share of sites where the problem was not found. | Check | This ranking | All sites | Top 10 | Below | |---|---:|---:|---:|---:| | [Bot challenges](https://goodforbots.com/standards#waf-challenge) | 100% | 98% | 100% | 100% | | [Indexing and snippet restrictions](https://goodforbots.com/standards#indexing-blocks) | 100% | 100% | 100% | 100% | | [Content without JavaScript](https://goodforbots.com/standards#javascript-required) | 100% | 99% | 100% | 100% | | [Search crawler access](https://goodforbots.com/standards#ai-crawler-access) | 100% | 99% | 100% | 100% | | [Homepage availability](https://goodforbots.com/standards#homepage-availability) | 100% | 99% | 100% | 100% | | [Page title and description](https://goodforbots.com/standards#page-metadata) | 100% | 99% | 100% | 100% | | [Redirect chains](https://goodforbots.com/standards#redirect-chain) | 100% | 100% | 100% | 100% | | [Crawler response time](https://goodforbots.com/standards#response-time) | 100% | 99% | 100% | 100% | #### Agent capabilities Share of sites that publish it. Never a point either way. | Check | This ranking | All sites | Top 10 | Below | |---|---:|---:|---:|---:| | [API Catalog](https://goodforbots.com/standards#api-catalog) | 8% | 4% | 30% | 0% | | [auth.md](https://goodforbots.com/standards#auth-md) | 5% | 2% | 20% | 0% | | [MCP Server Card](https://goodforbots.com/standards#mcp-server-card) | 0% | 0% | 0% | 0% | | [A2A Agent Card](https://goodforbots.com/standards#a2a-agent-card) | 3% | 2% | 0% | 3% | | [Agent Skills discovery](https://goodforbots.com/standards#agent-skills-index) | 8% | 3% | 30% | 0% | | [WebMCP declarations](https://goodforbots.com/standards#webmcp) | 0% | 0% | 0% | 0% | | [Web Bot Auth](https://goodforbots.com/standards#web-bot-auth) | 0% | 1% | 0% | 0% | | [x402 and MPP payments](https://goodforbots.com/standards#x402-mpp) | 3% | 1% | 0% | 3% | | [ACP discovery](https://goodforbots.com/standards#acp) | 0% | 1% | 0% | 0% | | [UCP discovery](https://goodforbots.com/standards#ucp) | 0% | 0% | 0% | 0% | | [AMP discovery](https://goodforbots.com/standards#amp-discovery) | 0% | 0% | 0% | 0% | ## Platforms used here - [Next.js](https://goodforbots.com/rankings/platform/nextjs.md): 84 sites - [WordPress](https://goodforbots.com/rankings/platform/wordpress.md): 10 sites - [Astro](https://goodforbots.com/rankings/platform/astro.md): 7 sites - [Lovable](https://goodforbots.com/rankings/platform/lovable.md): 5 sites - [Nuxt](https://goodforbots.com/rankings/platform/nuxt.md): 2 sites - [SvelteKit](https://goodforbots.com/rankings/platform/sveltekit.md): 2 sites ## Related categories - [Open Source Projects](https://goodforbots.com/rankings/open-source.md): 1 site - [AI Products & Agents](https://goodforbots.com/rankings/ai-products.md): 34 sites ## Where would your site place? Scan it for free. The report shows its score, its place in its category and the fixes that would move it up. [Check a site](https://goodforbots.com/#scan). ## Structured data ```json { "@context": "https://schema.org", "@graph": [ { "@type": "CollectionPage", "@id": "https://goodforbots.com/rankings/developer-tools#webpage", "url": "https://goodforbots.com/rankings/developer-tools", "name": "Developer Tools & APIs: AI visibility ranking", "description": "Developer Tools & APIs websites ranked by Good for Bots Score, with each site's readable base, agent layer and penalties, and how often the category passes each check.", "inLanguage": "en", "isPartOf": { "@id": "https://goodforbots.com/#website" }, "breadcrumb": { "@id": "https://goodforbots.com/rankings/developer-tools#breadcrumb" }, "mainEntity": { "@id": "https://goodforbots.com/rankings/developer-tools#items" } }, { "@type": "BreadcrumbList", "@id": "https://goodforbots.com/rankings/developer-tools#breadcrumb", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "https://goodforbots.com/" }, { "@type": "ListItem", "position": 2, "name": "Rankings", "item": "https://goodforbots.com/rankings" }, { "@type": "ListItem", "position": 3, "name": "Developer Tools & APIs", "item": "https://goodforbots.com/rankings/developer-tools" } ] }, { "@type": "ItemList", "@id": "https://goodforbots.com/rankings/developer-tools#items", "name": "Developer Tools & APIs: AI visibility ranking", "numberOfItems": 1, "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "ProxyJam", "url": "https://goodforbots.com/r/proxyjam.com" } ] }, { "@type": "Organization", "@id": "https://goodforbots.com/#organization", "name": "Good for Bots", "url": "https://goodforbots.com", "logo": "https://goodforbots.com/icon-512.png", "founder": { "@id": "https://goodforbots.com/#person-mateusz-pawlica" }, "contactPoint": { "@type": "ContactPoint", "contactType": "customer support", "email": "support@goodforbots.com", "url": "https://goodforbots.com/contact" } }, { "@type": "WebSite", "@id": "https://goodforbots.com/#website", "name": "Good for Bots", "url": "https://goodforbots.com", "description": "Check if AI crawlers can access and read your website, free. Get a score out of 100 with every finding and fix prompts, then browse reports in the directory.", "inLanguage": "en", "publisher": { "@id": "https://goodforbots.com/#organization" }, "potentialAction": { "@type": "SearchAction", "target": { "@type": "EntryPoint", "urlTemplate": "https://goodforbots.com/directory?q={q}" }, "query-input": "required maxlength=120 name=q" } }, { "@type": "Person", "@id": "https://goodforbots.com/#person-mateusz-pawlica", "name": "Mateusz Pawlica", "givenName": "Mateusz", "familyName": "Pawlica", "jobTitle": "Founder of Good for Bots", "description": "Web developer who builds directories and AI-powered products, and the founder of Good for Bots.", "url": "https://goodforbots.com/about#founder", "sameAs": [ "https://pl.linkedin.com/in/mateusz-pawlica-65238816b", "https://pawlicaweb.pl/o-mnie" ], "knowsAbout": [ "llms.txt", "robots.txt", "AI crawlers", "Markdown content negotiation", "Structured data", "Technical SEO", "Web directories", "Next.js", "TypeScript", "Generative AI" ], "worksFor": { "@id": "https://goodforbots.com/#organization" } } ] } ```