How scoring works

Sitemap exists

GET /sitemap.xml. Valid XML with <urlset> or <sitemapindex>

Content without JS

Raw HTML has meaningful text (>500 chars), <h1> present

Not blocked by bot detection

Fetch with GPTBot, ClaudeBot, ChatGPT-User, PerplexityBot UAs

robots.txt AI policy

Parse for GPTBot, ClaudeBot, ChatGPT-User, Google-Extended, PerplexityBot directives

llms.txt exists

Probe /llms.txt and /.well-known/llms.txt for existence

llms.txt quality

Validate format, check for markdown links, structured content

Agent discovery file

Probe /.well-known/agent-skills, /agents.md, /skills.sh

A2A Agent Card

Probe /.well-known/agent-card.json, validate JSON schema

Listed in MCP registries

Query Smithery, mcp.so, Glama, PulseMCP for domain match

llms.txt content quality

Check for structured product description, use cases, constraints in llms.txt

JSON-LD structured data

Parse JSON-LD for SoftwareApplication or Product schema types

Consistent description

Check consistency across meta, og tags, and JSON-LD descriptions

Pricing info accessible

Check /pricing, /plans, schema.org/Offer in JSON-LD, links

Public API/docs linked from homepage

Check homepage anchor tags for docs/API links, verify they resolve

Agent instruction / when-to-use

Check for explicit when-to-use guidance in agent files or llms.txt

Public API with reachable endpoints

Check /api, /docs/api, /api-reference. Probe for 200 response

OpenAPI spec published

Check /openapi.json, /swagger.json, validate schema version

OAuth 2.0 support

/.well-known/openid-configuration, scan docs for "OAuth"

Scoped permissions

Scan docs for "scope", "permission"; check OpenAPI securitySchemes

Agent auth documentation

Scan docs for M2M, client credentials, agent-specific auth flows

Developer portal

Check /developers, /console, /dashboard for self-serve key management

MCP server/manifest

Check /.well-known/mcp paths, MCP registries, provided mcpUrl

Webhook support

Scan docs for "webhook", check /webhooks path

Markdown content negotiation

GET / with Accept: text/markdown. Check for markdown response

Streaming support

Check docs for SSE, server-sent events, chunked transfer

Rate limits documented

Scan docs for "rate limit", check OpenAPI for 429 responses

JSON error responses

Probe invalid API path, check response is JSON not HTML

MCP app registry listing

Query MCP registries (Smithery, mcp.so, Glama) for UI-enabled entry

ChatGPT app listed

Check ai-plugin.json, homepage for GPT store / ChatGPT references

OpenAI plugin manifest

GET /.well-known/ai-plugin.json. Validate plugin format

A2UI / generative UI support

Scan docs/integrations for A2UI, generative UI, agent UI references

Verified integration in AI platforms

Check for Claude.ai, Goose, VS Code, Cursor integration mentions

Registry branding

Check MCP/plugin manifest for display name, icon, description