Supabase ranks higher at 42/100 vs just-every/mcp-read-website-fast at 26/100. Capability-level comparison backed by match graph evidence from real search data.
| Feature | just-every/mcp-read-website-fast | Supabase |
|---|---|---|
| Type | MCP Server | MCP Server |
| UnfragileRank | 26/100 | 42/100 |
| Adoption | 0 | 0 |
| Quality |
| 0 |
| 0 |
| Ecosystem | 0 | 0 |
| Match Graph | 0 | 0 |
| Pricing | Free | Free |
| Capabilities | 11 decomposed | 9 decomposed |
| Times Matched | 0 | 0 |
Extracts clean, semantically meaningful article content from web pages using Mozilla's Readability algorithm, which performs DOM tree analysis to identify and isolate main content while removing boilerplate, navigation, and sidebar elements. The extraction pipeline preserves semantic HTML structure (headings, lists, emphasis) that feeds into downstream Markdown conversion, enabling token-efficient representation for LLM consumption.
Unique: Uses Mozilla's battle-tested Readability library (same algorithm powering Firefox Reader View) rather than regex or CSS selector-based extraction, enabling structural DOM analysis that adapts to diverse page layouts without brittle selector maintenance
vs alternatives: More robust than selector-based scrapers (Cheerio, Puppeteer + custom CSS) because it analyzes semantic content density and DOM structure rather than relying on site-specific CSS classes that break when designs change
Converts extracted semantic HTML into clean, LLM-optimized Markdown using Turndown library with GitHub Flavored Markdown (GFM) plugin, preserving structural elements (headings, lists, code blocks, tables, emphasis) while stripping unnecessary HTML attributes and inline styles. The conversion pipeline maintains link references and code block syntax highlighting hints for downstream processing.
Unique: Combines Turndown with GFM plugin to produce GitHub-compatible Markdown (tables, strikethrough, task lists) rather than basic Markdown, enabling richer semantic preservation for technical content and code documentation
vs alternatives: Produces more LLM-friendly output than generic HTML-to-Markdown converters because GFM support preserves code block syntax hints and table structure, reducing token count and improving model comprehension of technical content
Implements the entire system as a Node.js ES Module package with no native C++ bindings or platform-specific code, enabling seamless deployment across Windows, macOS, and Linux without compilation or platform-specific builds. The pure JavaScript implementation ensures consistent behavior across platforms and simplifies installation and deployment.
Unique: Pure JavaScript/TypeScript implementation with no native dependencies ensures identical behavior across all platforms without requiring platform-specific builds or compilation, simplifying deployment and CI/CD integration
vs alternatives: Simpler deployment than Python-based scrapers (which require version management and virtual environments) or Rust-based tools (which require compilation); npm installation is faster and more reliable than managing native dependencies
Implements a local file-system cache using SHA-256 hashing of URLs as cache keys, storing extracted Markdown with configurable time-to-live (TTL) to avoid redundant fetches and processing. The caching layer sits between the fetch and extraction pipeline, checking cache validity before invoking network requests, reducing latency and bandwidth consumption for repeated URL accesses.
Unique: Uses SHA-256 URL hashing for cache key generation rather than raw URL strings, providing collision-resistant, fixed-length keys that work reliably across file systems with path length limitations and special character restrictions
vs alternatives: More reliable than URL-string-based caching because SHA-256 hashing eliminates file system path issues (special characters, length limits) and provides deterministic, collision-free keys; simpler than distributed caches for single-machine deployments
Implements concurrent HTTP fetching using configurable worker pools (default behavior inferred from architecture) to parallelize requests while respecting robots.txt directives and implementing polite crawling practices (rate limiting, User-Agent headers, request delays). The fetching layer manages connection pooling and error handling to enable scalable batch processing without overwhelming target servers or triggering IP blocks.
Unique: Combines configurable worker pools with robots.txt compliance and User-Agent spoofing prevention in a single fetching layer, rather than treating crawling politeness as a separate concern, ensuring ethical behavior is enforced at the network boundary
vs alternatives: More ethical and sustainable than naive concurrent scrapers because robots.txt compliance and rate limiting are built-in rather than optional, reducing risk of IP blocks and legal issues when crawling third-party content at scale
Extracts all hyperlinks from the original HTML content and preserves them in the Markdown output using reference-style link syntax, enabling knowledge graph construction and cross-document navigation. The extraction pipeline maintains link text, href attributes, and relative URL resolution to ensure links remain valid in downstream processing.
Unique: Preserves links as reference-style Markdown syntax rather than inline links, reducing token count and enabling downstream link analysis without re-parsing Markdown, making it suitable for both LLM consumption and knowledge graph construction
vs alternatives: More useful for knowledge graph systems than inline link preservation because reference-style links can be easily extracted and analyzed separately from content, enabling efficient link indexing without Markdown re-parsing
Implements a bootstrap entry point (bin/mcp-read-website.js) that dynamically routes to either CLI or MCP server interfaces based on command arguments, while both interfaces share the same underlying content extraction pipeline (fetchMarkdown.ts). This architecture enables code reuse and consistent behavior across interfaces while allowing each interface to optimize for its specific use case (CLI for scripting, MCP for AI assistant integration).
Unique: Uses a single bootstrap entry point with dynamic routing rather than separate CLI and MCP binaries, enabling shared core processing logic and reducing maintenance burden while supporting both interfaces from a single codebase
vs alternatives: More maintainable than separate CLI and MCP implementations because the core extraction logic is written once and tested once, reducing bugs and ensuring consistent behavior across interfaces; simpler deployment than managing multiple binaries
Implements a Model Context Protocol (MCP) server using stdio transport that exposes web content extraction as a callable tool for AI assistants (Claude, VS Code, Cursor, JetBrains IDEs). The MCP server implements the standard MCP protocol for tool discovery, request/response handling, and error reporting, enabling seamless integration into AI agent workflows without custom client code.
Unique: Implements MCP server using stdio transport (simpler than HTTP/WebSocket) with process supervision wrapper, enabling reliable integration into AI assistants without requiring external infrastructure or API keys
vs alternatives: More accessible than REST API-based web scraping tools because it integrates directly into AI assistants via MCP protocol without requiring users to manage API keys, authentication, or external services; stdio transport is simpler to deploy than HTTP servers
+3 more capabilities
Executes SQL queries against Supabase PostgreSQL instances through the Model Context Protocol, translating natural language or structured query requests into parameterized SQL statements. Uses MCP's tool-calling interface to expose database operations as callable functions with schema validation, enabling LLM agents to perform CRUD operations, joins, and aggregations with automatic connection pooling and credential management through Supabase client SDK.
Unique: Exposes Supabase PostgreSQL as MCP tools with automatic credential injection from Supabase client SDK, eliminating manual connection string management and enabling seamless LLM-to-database queries within Claude or compatible agents
vs alternatives: Tighter integration than generic SQL MCP servers because it leverages Supabase's built-in authentication and connection pooling rather than requiring separate database credential configuration
Exposes Supabase Auth session state and user metadata through MCP tools, allowing agents to inspect current authentication context, retrieve user profiles, and trigger auth-related operations. Integrates with Supabase's JWT-based auth system to validate sessions and access user claims without re-authenticating, using the Supabase client's built-in session management.
Unique: Integrates Supabase's JWT-based auth system directly into MCP tool interface, allowing agents to inspect and act on auth state without managing separate credential stores or re-authentication flows
vs alternatives: More seamless than generic auth MCP servers because it leverages Supabase's built-in session management and avoids redundant credential passing between agent and auth system
Invokes Supabase Edge Functions (serverless TypeScript/JavaScript functions) through MCP tools, passing parameters and receiving results with optional streaming support. Uses Supabase's edge function HTTP API to trigger functions with automatic authentication headers and response parsing, enabling agents to execute custom business logic without embedding it in the agent itself.
Supabase scores higher at 42/100 vs just-every/mcp-read-website-fast at 26/100.
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Unique: Exposes Supabase Edge Functions as MCP tools with automatic authentication and response parsing, allowing agents to invoke custom serverless logic without managing HTTP clients or credential injection
vs alternatives: More integrated than generic HTTP MCP tools because it handles Supabase-specific authentication, error handling, and response formatting automatically
Subscribes to real-time changes on Supabase tables through MCP's event streaming interface, using Supabase's PostgreSQL LISTEN/NOTIFY mechanism to push INSERT, UPDATE, and DELETE events to agents. Maintains persistent WebSocket connections and filters events by table and row-level policies, enabling agents to react to database changes without polling.
Unique: Bridges Supabase's PostgreSQL LISTEN/NOTIFY real-time system with MCP's tool interface, enabling agents to subscribe to database changes without managing WebSocket connections or event serialization
vs alternatives: More efficient than polling-based approaches because it uses Supabase's native real-time infrastructure rather than repeated database queries
Manages files in Supabase Storage buckets through MCP tools, supporting upload, download, list, and delete operations with automatic authentication and path-based access control. Uses Supabase's S3-compatible storage API with built-in support for public/private buckets and signed URLs for temporary access, enabling agents to handle file I/O without managing cloud storage credentials.
Unique: Exposes Supabase Storage's S3-compatible API as MCP tools with automatic authentication and signed URL generation, eliminating the need for agents to manage cloud storage credentials or generate temporary access tokens
vs alternatives: More integrated than generic S3 MCP tools because it leverages Supabase's built-in bucket policies and authentication rather than requiring separate AWS credentials
Performs semantic similarity searches on vector embeddings stored in Supabase PostgreSQL using pgvector extension, translating natural language queries into embedding vectors and executing cosine/L2 distance searches. Integrates with embedding providers (OpenAI, Cohere) or uses pre-computed embeddings, enabling agents to retrieve semantically similar documents or records without full-text search limitations.
Unique: Integrates pgvector directly into MCP tools with automatic embedding generation and distance calculation, enabling agents to perform semantic search without managing separate vector database infrastructure
vs alternatives: More efficient than external vector databases (Pinecone, Weaviate) for Supabase users because it colocates embeddings with relational data, reducing network latency and simplifying data synchronization
Exposes Supabase database schema information through MCP tools, allowing agents to discover table structures, column types, constraints, and relationships without manual schema documentation. Queries PostgreSQL information_schema and Supabase metadata tables to dynamically generate schema descriptions, enabling agents to construct valid queries and understand data relationships.
Unique: Queries Supabase's PostgreSQL information_schema directly through MCP tools, enabling agents to dynamically discover and adapt to database schemas without pre-configured schema definitions
vs alternatives: More flexible than static schema definitions because it reflects live database state, including recent migrations or schema changes
Enforces Supabase Row-Level Security policies within agent queries, ensuring that agents can only access rows permitted by RLS rules defined in the database. Evaluates policies based on authenticated user context (JWT claims, user ID) and applies WHERE clause filters automatically, preventing unauthorized data access at the database layer rather than application layer.
Unique: Delegates authorization enforcement to PostgreSQL RLS policies rather than implementing authorization in agent code, ensuring that data access rules are centralized and cannot be bypassed by agent logic
vs alternatives: More secure than application-level authorization because RLS is enforced at the database layer, preventing accidental data leaks even if agent code has bugs
+1 more capabilities