{"contractKind":"siteline.scan.result","contractVersion":"2.0.0-v2-preview","interface":"api","disclaimer":"This score reflects the submitted page, a few obvious public routes, and domain-level files. It is not a full-site audit.","inputURL":"sigsub.show","requestId":"scan_mvkqlz38_l4r49w","verdict":{"grade":"A","label":"Agent-Usable","score":100,"likelyFailureMode":"Usable baseline present"},"ok":true,"normalizedURL":"https://sigsub.show/","domain":"sigsub.show","scannedAt":"2026-10-23T08:58:03.316Z","provenance":{"rubricVersion":"2.4.0","scannerVersion":"2.1.2","scanDurationMs":742,"pagesFetched":[{"url":"https://sigsub.show/","statusCode":200,"role":"primary","bodyTruncated":false},{"url":"https://sigsub.show/robots.txt","statusCode":200,"role":"robots","bodyTruncated":false},{"url":"https://sigsub.show/llms.txt","statusCode":200,"role":"llms-txt","bodyTruncated":false},{"url":"https://sigsub.show/agents.json","statusCode":200,"role":"agents-json","bodyTruncated":false},{"url":"https://sigsub.show/.well-known/mcp.json","statusCode":200,"role":"mcp-json","bodyTruncated":false},{"url":"https://sigsub.show/.well-known/security.txt","statusCode":200,"role":"security-txt","bodyTruncated":false},{"url":"https://sigsub.show/llms-full.txt","statusCode":200,"role":"llms-full-txt","bodyTruncated":false},{"url":"https://sigsub.show/api/v1/index.json","statusCode":200,"role":"api-manifest","bodyTruncated":false},{"url":"https://sigsub.show/index.xml","statusCode":200,"role":"feed","bodyTruncated":false},{"url":"https://sigsub.show/sitemap.xml","statusCode":200,"role":"sitemap","bodyTruncated":false},{"url":"https://sigsub.show/podcast/","statusCode":200,"role":"route","bodyTruncated":false},{"url":"https://sigsub.show/newsletter/","statusCode":200,"role":"route","bodyTruncated":false},{"url":"https://sigsub.show/about/","statusCode":200,"role":"route","bodyTruncated":false},{"url":"https://sigsub.show/episodes/ep-017/","statusCode":200,"role":"route","bodyTruncated":false}],"checksRun":[{"pillar":"access","check":"serverReachability","status":"pass"},{"pillar":"access","check":"publicMachinePolicy","status":"pass"},{"pillar":"readability","check":"initialHtmlContent","status":"pass"},{"pillar":"readability","check":"semanticStructure","status":"pass"},{"pillar":"navigability","check":"siteIdentitySignals","status":"pass"},{"pillar":"navigability","check":"publicTaskRouting","status":"pass"},{"pillar":"navigability","check":"machineDiscoveryPaths","status":"pass"},{"pillar":"actionHandoff","check":"nextStepClarity","status":"pass"},{"pillar":"actionHandoff","check":"formAndCtaInterpretability","status":"pass"}],"agentUAsTested":[{"userAgent":"ClaudeBot/1.0","statusCode":200,"blocked":false},{"userAgent":"GPTBot/1.0","statusCode":200,"blocked":false},{"userAgent":"CCBot/2.0","statusCode":200,"blocked":false},{"userAgent":"Amazonbot/1.0","statusCode":200,"blocked":false}]},"page":{"statusCode":200,"timedOut":false,"botBlocked":false,"blockType":null,"bodyTruncated":false},"robots":{"url":"https://sigsub.show/robots.txt","statusCode":200,"ok":true,"bodyTruncated":false},"informationalResources":{"llmsTxt":{"url":"https://sigsub.show/llms.txt","statusCode":200,"ok":true,"bodyTruncated":false},"agentsJson":{"url":"https://sigsub.show/agents.json","statusCode":200,"ok":true,"bodyTruncated":false},"mcpJson":{"url":"https://sigsub.show/.well-known/mcp.json","statusCode":200,"ok":true,"bodyTruncated":false},"securityTxt":{"url":"https://sigsub.show/.well-known/security.txt","statusCode":200,"ok":true,"bodyTruncated":false},"openapi":null,"llmsFullTxt":{"url":"https://sigsub.show/llms-full.txt","statusCode":200,"ok":true,"bodyTruncated":false},"apiManifest":{"url":"https://sigsub.show/api/v1/index.json","statusCode":200,"ok":true,"bodyTruncated":false},"changelog":null},"derived":{"textLength":4463,"structuredDataTypes":["WebSite","SearchAction","EntryPoint","PodcastSeries","Person","Organization","Event","Schedule","VirtualLocation","PodcastEpisode"],"linkCount":61,"routeCandidates":["https://sigsub.show/podcast/","https://sigsub.show/newsletter/","https://sigsub.show/about/","https://sigsub.show/episodes/ep-017/"],"routePagesFetched":4},"commerceSignals":{"detected":true,"profile":"ecommerce","confidence":"high","transactionShapes":["purchase","checkout","booking","subscription","contact-sales"],"policyPaths":{"found":["return","contact","security"],"missing":["terms","privacy","support","refund","shipping"]},"structuredData":{"found":["Organization"],"missing":["Product","Offer","MerchantReturnPolicy"]},"funnelDependency":{"level":"high","finding":"Agents may need to enter a human-oriented funnel to understand this offer. Make pricing, terms, policies, or qualification criteria explicit enough for agents to summarize without guessing."},"agentWorkload":{"level":"medium","approximateInputTokens":9598,"pagesFetched":5,"taskPathHops":1,"ambiguousCtas":0,"blockedFetches":0},"boundarySignals":["agents.json","llms.txt","MCP discovery","security.txt","security path","MCP server manifest","llms.txt declares API + commerce","robots explicitly allows AI agents"],"source":"https://sigsub.show/","transactability":{"quality":2,"evidence":["MCP server manifest","llms.txt declares API + commerce","robots explicitly allows AI agents"]}},"evaluation":{"access":{"serverReachability":{"status":"pass","confidence":"high","reason":"The page is reachable to a server-side fetcher and common AI agent user-agents.","evidence":{"url":"https://sigsub.show/","statusCode":200,"blockType":null,"serverHeader":"GitHub.com","bodyExcerpt":null}},"publicMachinePolicy":{"status":"pass","confidence":"high","reason":"robots.txt provides a usable public machine policy baseline, reinforced by MCP discovery and security.txt."}},"readability":{"initialHtmlContent":{"status":"pass","confidence":"high","reason":"The initial HTML contains meaningful readable content."},"semanticStructure":{"status":"pass","confidence":"medium","reason":"The page has clear main content, headings and labeled navigation; absent interactive controls do not require labels."}},"navigability":{"siteIdentitySignals":{"status":"pass","confidence":"high","reason":"The page clearly signals what it is and what it represents."},"publicTaskRouting":{"status":"pass","confidence":"medium","reason":"The site exposes a coherent public path toward next steps."},"machineDiscoveryPaths":{"status":"pass","confidence":"high","reason":"Machine discovery is available via feed, sitemap, llms.txt, agents.json, API manifest. Additional resource types are not required merely to increase coverage counts.","evidence":[{"type":"resource","resource":"sitemap","url":"https://sigsub.show/sitemap.xml","statusCode":200,"status":"present"},{"type":"resource","resource":"feed","url":"https://sigsub.show/index.xml","statusCode":200,"status":"present"},{"type":"resource","resource":"llms.txt","url":"https://sigsub.show/llms.txt","statusCode":200,"status":"present"},{"type":"resource","resource":"agents.json","url":"https://sigsub.show/agents.json","statusCode":200,"status":"present"},{"type":"resource","resource":"API manifest","url":"https://sigsub.show/api/v1/index.json","statusCode":200,"status":"present"}]}},"actionHandoff":{"nextStepClarity":{"status":"pass","confidence":"medium","reason":"The page offers understandable next-step paths for a human."},"formAndCtaInterpretability":{"status":"pass","confidence":"medium","reason":"Explicit actions and an observed contact or project handoff make the next step interpretable.","evidence":[{"type":"cta","element":"a","text":"Skip to content","href":"https://sigsub.show/#main","selector":"a[href=\"#main\"]","rule":"descriptive-action-route"},{"type":"cta","element":"a","text":"Signals & Subtractions","href":"https://sigsub.show/","selector":"a[href=\"/\"]","rule":"descriptive-action-route"},{"type":"cta","element":"a","text":"All episodes","href":"https://sigsub.show/episodes/","selector":"a[href=\"/episodes/\"]","rule":"descriptive-action-route"}]}}},"score":100,"rawScore":100,"grade":"A","label":"Agent-Usable","pillars":{"access":100,"navigability":100,"readability":100,"actionHandoff":100},"likelyFailureMode":"Usable baseline present","accessBlocked":false,"agenticEnablement":{"level":4,"totalQuality":18,"maxQuality":18,"purposes":{"machinePolicy":2,"contentDiscovery":2,"changeTracking":2,"llmContext":2,"agentCapabilities":2,"apiDescription":2,"mcpDiscovery":2,"securityContact":2,"transactability":2},"details":{"robots":2,"sitemap":2,"feed":2,"llmsTxt":2,"llmsFullTxt":2,"agentsJson":2,"mcpJson":2,"securityTxt":2,"openapi":0,"apiManifest":2,"changelog":0}},"summary":{"headline":"Agents should be able to use this site with relatively little friction.","detail":"No reviewed check failed or raised a warning. All SNAP pillars score 100.","label":"Agent-Usable","likelyFailureMode":"Usable baseline present"},"findings":[{"id":"access.serverReachability","status":"pass","reason":"The page is reachable to a server-side fetcher and common AI agent user-agents.","evidence":{"url":"https://sigsub.show/","statusCode":200,"blockType":null,"serverHeader":"GitHub.com","bodyExcerpt":null},"pillar":"access","title":"Agents can reach the site reliably","impact":"Reliable server-side access gives agents a usable starting point for everything else on the site.","remediation":null,"effort":null,"group":"opportunities","summary":"Working well. The page is reachable to a server-side fetcher and common AI agent user-agents.","detail":"The page is reachable to a server-side fetcher and common AI agent user-agents."},{"id":"readability.initialHtmlContent","status":"pass","reason":"The initial HTML contains meaningful readable content.","pillar":"readability","title":"Initial HTML is readable on first fetch","impact":"Meaningful text in the first response makes the page easier for agents to interpret without guesswork.","remediation":null,"effort":null,"group":"opportunities","summary":"Working well. The initial HTML contains meaningful readable content.","detail":"The initial HTML contains meaningful readable content."},{"id":"navigability.publicTaskRouting","status":"pass","reason":"The site exposes a coherent public path toward next steps.","pillar":"navigability","title":"Public next-step paths are clear","impact":"Clear public next-step paths make it easier for agents to route a human without guessing.","remediation":null,"effort":null,"group":"opportunities","summary":"Working well. The site exposes a coherent public path toward next steps.","detail":"The site exposes a coherent public path toward next steps."},{"id":"actionHandoff.nextStepClarity","status":"pass","reason":"The page offers understandable next-step paths for a human.","pillar":"actionHandoff","title":"The site provides a clear human handoff","impact":"A clear next step lets agents move a user toward contact, booking, or action with confidence.","remediation":null,"effort":null,"group":"opportunities","summary":"Working well. The page offers understandable next-step paths for a human.","detail":"The page offers understandable next-step paths for a human."},{"id":"actionHandoff.formAndCtaInterpretability","status":"pass","reason":"Explicit actions and an observed contact or project handoff make the next step interpretable.","evidence":[{"type":"cta","element":"a","text":"Skip to content","href":"https://sigsub.show/#main","selector":"a[href=\"#main\"]","rule":"descriptive-action-route"},{"type":"cta","element":"a","text":"Signals & Subtractions","href":"https://sigsub.show/","selector":"a[href=\"/\"]","rule":"descriptive-action-route"},{"type":"cta","element":"a","text":"All episodes","href":"https://sigsub.show/episodes/","selector":"a[href=\"/episodes/\"]","rule":"descriptive-action-route"}],"pillar":"actionHandoff","title":"Calls to action are interpretable","impact":"Explicit calls to action and form intent make agent interpretation more reliable.","remediation":null,"effort":null,"group":"opportunities","summary":"Working well. Explicit actions and an observed contact or project handoff make the next step interpretable.","detail":"Explicit actions and an observed contact or project handoff make the next step interpretable."}],"findingGroups":{"blockers":[],"coreIssues":[],"opportunities":[{"id":"access.serverReachability","status":"pass","reason":"The page is reachable to a server-side fetcher and common AI agent user-agents.","evidence":{"url":"https://sigsub.show/","statusCode":200,"blockType":null,"serverHeader":"GitHub.com","bodyExcerpt":null},"pillar":"access","title":"Agents can reach the site reliably","impact":"Reliable server-side access gives agents a usable starting point for everything else on the site.","remediation":null,"effort":null,"group":"opportunities","summary":"Working well. The page is reachable to a server-side fetcher and common AI agent user-agents.","detail":"The page is reachable to a server-side fetcher and common AI agent user-agents."},{"id":"readability.initialHtmlContent","status":"pass","reason":"The initial HTML contains meaningful readable content.","pillar":"readability","title":"Initial HTML is readable on first fetch","impact":"Meaningful text in the first response makes the page easier for agents to interpret without guesswork.","remediation":null,"effort":null,"group":"opportunities","summary":"Working well. The initial HTML contains meaningful readable content.","detail":"The initial HTML contains meaningful readable content."},{"id":"navigability.publicTaskRouting","status":"pass","reason":"The site exposes a coherent public path toward next steps.","pillar":"navigability","title":"Public next-step paths are clear","impact":"Clear public next-step paths make it easier for agents to route a human without guessing.","remediation":null,"effort":null,"group":"opportunities","summary":"Working well. The site exposes a coherent public path toward next steps.","detail":"The site exposes a coherent public path toward next steps."},{"id":"actionHandoff.nextStepClarity","status":"pass","reason":"The page offers understandable next-step paths for a human.","pillar":"actionHandoff","title":"The site provides a clear human handoff","impact":"A clear next step lets agents move a user toward contact, booking, or action with confidence.","remediation":null,"effort":null,"group":"opportunities","summary":"Working well. The page offers understandable next-step paths for a human.","detail":"The page offers understandable next-step paths for a human."},{"id":"actionHandoff.formAndCtaInterpretability","status":"pass","reason":"Explicit actions and an observed contact or project handoff make the next step interpretable.","evidence":[{"type":"cta","element":"a","text":"Skip to content","href":"https://sigsub.show/#main","selector":"a[href=\"#main\"]","rule":"descriptive-action-route"},{"type":"cta","element":"a","text":"Signals & Subtractions","href":"https://sigsub.show/","selector":"a[href=\"/\"]","rule":"descriptive-action-route"},{"type":"cta","element":"a","text":"All episodes","href":"https://sigsub.show/episodes/","selector":"a[href=\"/episodes/\"]","rule":"descriptive-action-route"}],"pillar":"actionHandoff","title":"Calls to action are interpretable","impact":"Explicit calls to action and form intent make agent interpretation more reliable.","remediation":null,"effort":null,"group":"opportunities","summary":"Working well. Explicit actions and an observed contact or project handoff make the next step interpretable.","detail":"Explicit actions and an observed contact or project handoff make the next step interpretable."}]},"informational":{"llmsTxt":{"detected":true,"url":"https://sigsub.show/llms.txt","note":"Detected and appears to contain structured briefing content."},"agentsJson":{"detected":true,"url":"https://sigsub.show/agents.json","note":"Detected and parsed as valid JSON."},"feeds":{"detected":true,"note":"Informational-only signal."},"robotsTxt":{"detected":true,"note":"Used as a policy and access baseline."},"mcpJson":{"detected":true,"url":"https://sigsub.show/.well-known/mcp.json","note":"MCP server discovery detected."},"securityTxt":{"detected":true,"url":"https://sigsub.show/.well-known/security.txt","note":"RFC 9116 security policy detected."},"openapi":{"detected":false,"url":null,"note":"Not detected."},"llmsFullTxt":{"detected":true,"url":"https://sigsub.show/llms-full.txt","note":"Extended LLM context file detected."},"apiManifest":{"detected":true,"url":"https://sigsub.show/api/v1/index.json","note":"API manifest detected."},"changelog":{"detected":false,"url":null,"note":"Not detected."},"semanticResources":{"assistantGuide":{"detected":true,"url":"https://sigsub.show/.well-known/assistant-guide.txt","note":"Assistant guide detected. Detection-only; not currently scored."},"ontologyJson":{"detected":false,"url":null,"note":"Not detected. Optional detection-only signal."},"relationshipsYaml":{"detected":false,"url":null,"note":"Not detected. Optional detection-only signal."},"htmlLinks":{"serviceDesc":[],"security":[],"alternateMachine":["https://sigsub.show/index.xml","https://sigsub.show/updates.xml","https://sigsub.show/podcast/feed.xml","https://sigsub.substack.com/feed"],"note":"HTML machine-resource discovery links are detection-only and do not currently affect scoring."}},"contentModel":{"health":"clear","note":"Navigation reflects distinct content sections with coherent organization.","issues":[]},"contentDivergence":{"tested":true,"divergent":false,"similarity":null,"note":"Origin returned HTML for both requests — no content switching detected."}},"evidence":{"probes":[{"id":"robots","purpose":"machinePolicy","url":"https://sigsub.show/robots.txt","status":200,"contentType":"text/plain; charset=utf-8","durationMs":122,"verdict":"pass","reason":"content validated","bodySha256":"sha256:89733ebef2d10e5a5b20a17af89a83703ad7956775bdeaff26ef3396fcbdc3bb","bodyExcerpt":"# Signals & Subtractions show site: robots.txt\n# Site is public. AI bots explicitly welcome.\n\nUser-agent: *\nAllow: /\n\nUser-agent: GPTBot\nAllow: /\n\nUser-agent: ClaudeBot\nAllow: /\n\nUser-agent: Claude-Web\nAllow: /\n\nUser-agent: anthropic-ai\nAllow: /\n\nUser-agent: PerplexityBot\nAllow: /\n\nUser-agent: Perplexity-User\nAllow: /\n\nUser-agent: Google-Extended\nAllow: /\n\nUser-agent: OAI-SearchBot\nAllow: /\n\nUser-agent: ChatGPT-User\nAllow: /\n\nUser-agent: Applebot-Extended\nAllow: /\n\nUser-agent: CCBot\nAllow: /\n\nUser-agent: Me"},{"id":"sitemap","purpose":"contentDiscovery","url":"https://sigsub.show/sitemap.xml","status":200,"contentType":"application/xml","durationMs":167,"verdict":"pass","reason":"content validated","bodySha256":"sha256:b5f529edeeb3b3ba1d8142a08d11e8a8a4d9ac2594b7c083d3152ee14617d580","bodyExcerpt":"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<urlset xmlns=\"http://www.sitemaps.org/schemas/sitemap/0.9\" xmlns:video=\"http://www.google.com/schemas/sitemap-video/1.1\">\n  <url>\n    <loc>https://sigsub.show/</loc>\n    <lastmod>2026-10-22</lastmod>\n  </url>\n  <url>\n    <loc>https://sigsub.show/episodes/</loc>\n    <lastmod>2026-10-22</lastmod>\n  </url>\n  <url>\n    <loc>https://sigsub.show/episodes/ep-017/</loc>\n    <lastmod>2026-10-22</lastmod>\n    <video:video>\n      <video:thumbnail_loc>https://sigsub.show/imgs/epi"},{"id":"feed","purpose":"changeTracking","url":"https://sigsub.show/index.xml","status":200,"contentType":"application/xml","durationMs":163,"verdict":"pass","reason":"content validated","bodySha256":"sha256:ed8d8ecf08d9d83c026acfb8045ac098c4a0835294b73fb2a90edf019f63e38e","bodyExcerpt":"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<rss version=\"2.0\" xmlns:atom=\"http://www.w3.org/2005/Atom\">\n<channel>\n  <title>Signals &amp; Subtractions: Episodes</title>\n  <link>https://sigsub.show/</link>\n  <atom:link href=\"https://sigsub.show/index.xml\" rel=\"self\" type=\"application/rss+xml\"/>\n  <description>Weekly live show for people deciding what their organization should do with AI, and what it should stop doing.</description>\n  <language>en</language>\n  <lastBuildDate>Thu, 22 Oct 2026 12:00:00 GMT</lastBuil"},{"id":"llms.txt","purpose":"llmContext","url":"https://sigsub.show/llms.txt","status":200,"contentType":"text/plain; charset=utf-8","durationMs":161,"verdict":"pass","reason":"content validated","bodySha256":"sha256:3f6fba8d62cb28c97c3dead32c49eb454e08a51a73635ce8e5b3482711fcbcc5","bodyExcerpt":"# Signals & Subtractions\n\n> Weekly live show for people deciding what their organization should do with AI, and what it should stop doing.\n\nCanonical: https://sigsub.show/\nNewsletter index: https://sigsub.show/newsletter/\nSearch this show: https://sigsub.show/search/ (covers every episode, transcript turn, newsletter issue, and signal and subtraction pair; accepts ?q=)\nHost: https://sigsub.show/host/\nCohosts: https://sigsub.show/cohosts/\nSubstack: https://sigsub.substack.com/\nYouTube: https://youtube.com/@s"},{"id":"llms-full.txt","purpose":"llmContext","url":"https://sigsub.show/llms-full.txt","status":200,"contentType":"text/plain; charset=utf-8","durationMs":73,"verdict":"pass","reason":"content validated","bodySha256":"sha256:28618657edf9f69dfdfd2813d3f45dd9f3c6209af4652715d584c8a8639a5908","bodyExcerpt":"# Signals & Subtractions: full machine-readable brief\n\n> Weekly live show for people deciding what their organization should do with AI, and what it should stop doing.\n\n## Canonical surfaces\n\n- Web home: https://sigsub.show/\n- Canonical newsletter index: https://sigsub.show/newsletter/\n- Search across the whole publication: https://sigsub.show/search/ (covers every episode, transcript turn, newsletter issue, and signal and subtraction pair; accepts ?q=; prefer it over guessing whether a topic was covered)\n-"},{"id":"agents.json","purpose":"agentCapabilities","url":"https://sigsub.show/agents.json","status":200,"contentType":"application/json; charset=utf-8","durationMs":185,"verdict":"pass","reason":"content validated","bodySha256":"sha256:fde3ce7709275bbc48c13d76bd66da79f7bb686912c7ad197811e76f81c623a8","bodyExcerpt":"{\n  \"@context\": \"https://schema.org\",\n  \"@type\": \"PodcastSeries\",\n  \"inLanguage\": \"en\",\n  \"image\": \"https://sigsub.show/imgs/og.png\",\n  \"capabilities\": [\n    {\n      \"name\": \"list_episodes\",\n      \"description\": \"Every shipped episode: number, title, date, duration, cast, platform URLs.\",\n      \"via\": \"mcp\",\n      \"url\": \"https://sigsub.show/api/v1/episodes.json\"\n    },\n    {\n      \"name\": \"get_episode\",\n      \"description\": \"One episode's full record by number.\",\n      \"via\": \"mcp\"\n    },\n    {\n      \"name"},{"id":"openapi","purpose":"apiDescription","url":null,"status":null,"contentType":null,"durationMs":null,"verdict":"absent","reason":"not fetched","bodySha256":null,"bodyExcerpt":null},{"id":"api/v1/index.json","purpose":"apiDescription","url":"https://sigsub.show/api/v1/index.json","status":200,"contentType":"application/json; charset=utf-8","durationMs":72,"verdict":"pass","reason":"content validated","bodySha256":"sha256:ddb6ab4db28673af0f4fab3a6468af321f1aa5c65acacdff0619f79ac21793d2","bodyExcerpt":"{\n  \"meta\": {\n    \"generated\": \"2026-10-22\",\n    \"series\": \"https://sigsub.show/#show\",\n    \"rights\": \"All Rights Reserved\",\n    \"copyright_holder\": \"Snap Synapse LLC\",\n    \"rights_url\": \"https://sigsub.show/rights/\",\n    \"rights_statement\": \"Copyright 2026 Snap Synapse LLC. All Rights Reserved. Public APIs are provided for read-only discovery and do not grant a license to copy or redistribute the underlying content.\",\n    \"update_cadence\": \"episodes Friday, newsletter Sunday; files are static, cache freely"},{"id":"changelog","purpose":"changeTracking","url":null,"status":null,"contentType":null,"durationMs":null,"verdict":"absent","reason":"not fetched","bodySha256":null,"bodyExcerpt":null},{"id":"mcp.json","purpose":"mcpDiscovery","url":"https://sigsub.show/.well-known/mcp.json","status":200,"contentType":"application/json; charset=utf-8","durationMs":111,"verdict":"pass","reason":"content validated","bodySha256":"sha256:e17aa7f8bb89a67319c8ec8428504f5f5080791f21732f55481667d939f208c0","bodyExcerpt":"{\n  \"server\": {\n    \"name\": \"signals-subtractions\",\n    \"version\": \"0.3.0\",\n    \"description\": \"Read-only MCP server over the Signals & Subtractions archive: episodes, transcripts, every published signal and subtraction pair, and every takeaway with its schema and copy-paste prompt.\",\n    \"transport\": \"stdio\",\n    \"tools\": [\n      {\n        \"name\": \"list_episodes\",\n        \"description\": \"List every shipped episode of Signals & Subtractions: number, title, date, duration, cast, and platform URLs.\",\n        "},{"id":"security.txt","purpose":"securityContact","url":"https://sigsub.show/.well-known/security.txt","status":200,"contentType":"text/plain; charset=utf-8","durationMs":62,"verdict":"pass","reason":"content validated","bodySha256":"sha256:282966dc30d5296dbccc4465aafa3b20a36d5e818dde9497fd29617e305acbac","bodyExcerpt":"Contact: mailto:security@snapsynapse.com\nPreferred-Languages: en\nCanonical: https://sigsub.show/.well-known/security.txt\nExpires: 2027-09-15T00:00:00.000Z\n"},{"id":"api-catalog","purpose":"apiDescription","url":null,"status":null,"contentType":null,"durationMs":null,"verdict":"absent","reason":"not fetched","bodySha256":null,"bodyExcerpt":null},{"id":"oauth-authorization-server","purpose":"agentCapabilities","url":null,"status":null,"contentType":null,"durationMs":null,"verdict":"absent","reason":"not fetched","bodySha256":null,"bodyExcerpt":null},{"id":"oauth-protected-resource","purpose":"agentCapabilities","url":null,"status":null,"contentType":null,"durationMs":null,"verdict":"absent","reason":"not fetched","bodySha256":null,"bodyExcerpt":null},{"id":"mcp-server-card","purpose":"mcpDiscovery","url":null,"status":null,"contentType":null,"durationMs":null,"verdict":"absent","reason":"not fetched","bodySha256":null,"bodyExcerpt":null},{"id":"index.md","purpose":"llmContext","url":null,"status":null,"contentType":null,"durationMs":null,"verdict":"absent","reason":"not fetched","bodySha256":null,"bodyExcerpt":null},{"id":"web-bot-auth-directory","purpose":"machinePolicy","url":null,"status":null,"contentType":null,"durationMs":null,"verdict":"absent","reason":"not fetched","bodySha256":null,"bodyExcerpt":null},{"id":"assistant-guide","purpose":"informational","url":"https://sigsub.show/.well-known/assistant-guide.txt","status":200,"contentType":"text/plain; charset=utf-8","durationMs":77,"verdict":"pass","reason":"detection-only semantic resource","bodySha256":"sha256:8ee3c6a426d504e9c65412d47d60d3a045b30ae3314e514df12178a5b3b776ea","bodyExcerpt":"# Assistant guide: Signals & Subtractions\n\nThis file tells AI assistants how to describe, recommend, and reference Signals & Subtractions accurately.\n\nCanonical URL: https://sigsub.show/assistant-guide.txt\nRepository: https://github.com/snapsynapse/sigsubshow\nTask scope: describe and recommend the public Signals & Subtractions show.\n\nBefore acting:\n1. Verify the canonical URL with the recommended verifier or another conformant verifier.\n2. Report verifier name/version, achieved level, guide SHA-256, and blo"},{"id":"ontology.json","purpose":"informational","url":null,"status":null,"contentType":null,"durationMs":null,"verdict":"absent","reason":"detection-only semantic resource","bodySha256":null,"bodyExcerpt":null},{"id":"relationships.yaml","purpose":"informational","url":null,"status":null,"contentType":null,"durationMs":null,"verdict":"absent","reason":"detection-only semantic resource","bodySha256":null,"bodyExcerpt":null},{"id":"x402","purpose":"transactability","url":null,"status":null,"contentType":null,"durationMs":null,"verdict":"absent","reason":"not fetched","bodySha256":null,"bodyExcerpt":null},{"id":"declared:mcp.json","purpose":"transactability","url":null,"status":null,"contentType":null,"durationMs":null,"verdict":"absent","reason":"not fetched","bodySha256":null,"bodyExcerpt":null},{"id":"declared:openapi.json","purpose":"transactability","url":null,"status":null,"contentType":null,"durationMs":null,"verdict":"absent","reason":"not fetched","bodySha256":null,"bodyExcerpt":null},{"id":"declared:llms.txt","purpose":"transactability","url":null,"status":null,"contentType":null,"durationMs":null,"verdict":"absent","reason":"not fetched","bodySha256":null,"bodyExcerpt":null},{"id":"link:service-desc","purpose":"apiDescription","url":"https://sigsub.show/","status":200,"contentType":null,"durationMs":null,"verdict":"absent","reason":"header signal absent","bodySha256":null,"bodyExcerpt":null},{"id":"link:sitemap","purpose":"contentDiscovery","url":"https://sigsub.show/","status":200,"contentType":null,"durationMs":null,"verdict":"absent","reason":"header signal absent","bodySha256":null,"bodyExcerpt":null},{"id":"www-authenticate:oauth","purpose":"agentCapabilities","url":"https://sigsub.show/","status":200,"contentType":null,"durationMs":null,"verdict":"absent","reason":"header signal absent","bodySha256":null,"bodyExcerpt":null},{"id":"html-link:service-desc","purpose":"informational","url":"https://sigsub.show/","status":200,"contentType":null,"durationMs":null,"verdict":"absent","reason":"HTML discovery link absent","targets":[],"bodySha256":null,"bodyExcerpt":null},{"id":"html-link:security","purpose":"informational","url":"https://sigsub.show/","status":200,"contentType":null,"durationMs":null,"verdict":"absent","reason":"HTML discovery link absent","targets":[],"bodySha256":null,"bodyExcerpt":null},{"id":"html-link:alternate-machine","purpose":"informational","url":"https://sigsub.show/","status":200,"contentType":null,"durationMs":null,"verdict":"pass","reason":"HTML discovery link present","targets":["https://sigsub.show/index.xml","https://sigsub.show/updates.xml","https://sigsub.show/podcast/feed.xml","https://sigsub.substack.com/feed"],"bodySha256":null,"bodyExcerpt":null}]},"remediationTier":{"category":"none","reason":"No significant remediation needed at this time.","selfFixable":[],"requiresIntervention":[],"suggestedNext":null},"siteTypeHint":"publishing","siteTypeRaw":"blog","siteFamilyHint":"publishing","siteTypeKind":"family","candidateRubricProfiles":["publisher"],"siteTypeApplied":false,"rubricProfile":"business","profileApplied":false,"profileEvidence":[],"profileConfidence":"none","profileNote":"Profile overlay not applied: publishing is accepted as a targeting hint, but evidence-gated profile overlays are not active yet. Future evidence gates will look for signals such as BlogPosting, NewsArticle, RSS, Atom, author.","siteTypeNote":"Profile overlay not applied: publishing is accepted as a targeting hint, but evidence-gated profile overlays are not active yet. Future evidence gates will look for signals such as BlogPosting, NewsArticle, RSS, Atom, author.","external":{"cloudflare":{"available":false,"informational":true,"attribution":{"name":"Cloudflare Agent Readiness","url":"https://isitagentready.com/"},"adapterVersion":"1.0.0","fetchedAt":"2026-10-23T08:58:06.574Z","note":"Baseline unavailable: timeout after 4000ms. This never affects the Siteline score or grade."}},"standards":{"version":"1.0.0","informational":true,"note":"Standards conformance is informational and does not affect score, grade, or level.","entries":[{"id":"graceful-boundaries","name":"Graceful Boundaries","specURL":"https://github.com/snapsynapse/graceful-boundaries","informational":true,"detected":false,"available":true,"passiveLevelEvidence":null,"statement":"No passive Graceful Boundaries evidence detected","discoveryPath":null,"evidence":[],"note":"Passive evidence only. Full Graceful Boundaries verification (refusal shapes, 429 conduct) requires the GB checker: npx graceful-boundaries"},{"id":"guidecheck","name":"GuideCheck (assistant-guide.txt)","specURL":"https://guidecheck.org/","informational":true,"assessmentScope":"basic-shape-screen","fullConformanceAssessed":false,"detected":true,"source":"/.well-known/assistant-guide.txt","shapeConformant":false,"conformant":false,"statement":"assistant-guide.txt detected with 1 shape finding","findings":[{"id":"metadata-block-missing","detail":"no [assistant-guide-metadata] block; required at Level 3+"}],"sizeBytes":7997,"lineCount":168,"note":"Basic shape screening only. Full GuideCheck conformance was not assessed; use a conformant, profile-aware GuideCheck verifier. Conformance is not safety."}]},"resultId":"sigsub-show-v2-c2836c14c9f59450e2b97b8e-20261023","persistence":{"stored":true}}