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Public Streamable-HTTP MCP server for the Metagraphed Bittensor subnet integration registry — discover subnets, check health and economics, read metagraph data, and look up accounts or API surfaces without wallets or signing.

Official AWS Labs MCP server for AWS Identity and Access Management that lets AI assistants inspect and manage IAM users, roles, groups, policies, and access keys, with policy simulation and an opt-in read-only mode.

Official AWS Labs MCP server for AWS S3 Tables that lets AI assistants create and query S3-based tables, run read-only SQL for analysis, generate tables from CSV files in S3, and explore table metadata — read-only by default.

Official AutoRFP.ai remote MCP server for read-only access to RFP projects, requirements, approved content library search, and organisation tags from Claude and other MCP clients via OAuth.

An MCP server from the official Couchbase-Ecosystem org that lets LLMs interact directly with Couchbase clusters — running SQL++/N1QL queries, performing document CRUD, discovering schema and data models, and analyzing query performance, with a read-only mode enabled by default.

The official Render MCP server lets LLMs manage Render resources: create and manage web services, static sites, cron jobs, Postgres and Key-Value instances, monitor deploys, query logs and metrics, and run read-only SQL against Render Postgres.

Biomedical MCP server and CLI for searching genes, variants, articles, clinical trials, drugs, diseases, pathways, proteins, adverse events, pharmacogenomics, GWAS, phenotypes, and local study datasets.

MCP server for querying a local DuckDB database file from Claude through a single SQL query tool, with optional DuckDB-native read-only mode.

Official MariaDB MCP server for schema inspection, read-only SQL, optional database creation, and vector-store search against MariaDB databases.

AWS-maintained proxy and Python library that lets MCP clients and agent frameworks connect to IAM-secured MCP servers on AWS by signing requests with AWS SigV4 credentials.

Ruby gem MCP server for Rails projects that lets Claude inspect files, routes, models, schema, controller-view relationships, environment config, and framework guides.

Telethon-powered MCP server for connecting Claude to Telegram accounts, chats, messages, contacts, media, folders, groups, channels, profile settings, and read-only or full account workflows.

Connect Claude to Auth0's official local MCP server for tenant administration, application setup, Actions, logs, forms, and scoped Management API workflows.

Read-only Claude Code PostToolUse hook that runs Biome's formatter, linter, and import-sorting checks on edited JavaScript, TypeScript, JSON, CSS, and GraphQL files without auto-writing changes.

Read-only Claude Code PostToolUse hook that runs Hadolint diagnostics after Claude writes or edits Dockerfile-like files, surfacing Dockerfile best practice, inline shell, trusted registry, label, and configuration findings without rewriting files.

Read-only Claude Code PostToolUse hook that runs ShellCheck diagnostics after Claude writes or edits shell scripts, reporting shell portability, quoting, expansion, error-handling, and command-safety issues without modifying files.

Read-only Claude Code PostToolUse hook that runs shfmt diff checks after Claude writes or edits shell scripts, surfacing POSIX shell, Bash, Zsh, and mksh formatting drift without rewriting files or executing scripts.

Source-backed Claude agent prompt for using the Allways agent quickstart, live dashboards, API docs, and open source repo in a read-only-first workflow.

Connect Claude to ClickHouse for read-only SQL exploration, schema discovery, and safe analytics workflows.

Search the public HeyClaude registry, fetch entry details, inspect compatibility, and build PR-first submission URLs through MCP.

Connect Claude to Supabase projects through the official MCP server with project scoping, read-only mode, and feature-group controls.

The official Convex MCP server, built into the Convex CLI, that lets AI agents introspect and query a Convex deployment — listing tables, paginating data, running deployed functions and read-only one-off queries, reading logs and function specs, and managing environment variables — with production deployments blocked by default as a safety measure.

The official Paddle MCP server (@paddle/paddle-mcp) that lets AI assistants work with Paddle Billing — managing the product catalog, prices, and discounts, customers and businesses, subscriptions, transactions and adjustments, and financial reports — over the Paddle API, with sandbox or production environments and a read-only / non-destructive / all tool-permission filter.

Community slash command runbook for post-install MCP verification using only documented Claude Code MCP commands: claude mcp list, claude mcp get, and the /mcp panel for authentication status before exercising a read-only tool.

Read-only AWS FinOps MCP server that lets Claude query Cost Explorer cost and usage data, compare AWS CLI profiles, filter by tags or dimensions, check AWS Budgets, and audit for stopped EC2 instances, unattached EBS volumes, and unassociated Elastic IP addresses across selected regions.

Apache-licensed TypeScript MCP server for Obsidian vaults with stdio and Streamable HTTP transports, Local REST API access, note search, section-aware edits, tag/frontmatter management, path policies, and read-only controls.

Official Neo4j MCP server for giving Claude structured access to Neo4j graph schema introspection, read-only Cypher, optional write Cypher, and Graph Data Science procedure discovery.

Microsoft 365 Graph API MCP server for personal and organization accounts, with OAuth, read-only mode, scope allowlists, presets, multi-account support, and Streamable HTTP deployment.

Read-only Claude Code Stop hook that checks the current GitHub pull request title against a Conventional Commits style pattern before the session ends, then falls back to the latest commit subject when no PR title is available.

Connect Claude to Twilio's hosted MCP server for read-only search and retrieval across public Twilio API specifications, Twilio Docs, SendGrid Docs, Segment Docs, and support articles.