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app.surewhynot.quartermaster/quartermaster
app.surewhynot.quartermaster/quartermaster in the official MCP registry.
Endpoint https://quartermaster.surewhynot.app/mcp.
The registry describes it as: x402 toolkit for AI agents: paid web, AI, and Base chain tools per call in USDC. Free tools too.
We read its 49 tools on 2026-10-22. Nothing in them matched our tool-poisoning rules. It also sets server instructions, text a client puts in front of the model on connect; those were read too.
A clean read means these rules found nothing, not that the server is harmless. A server can change its tools at any time, which is why the index reads it again every week.
Tools it advertises
x402_router web_extract page_meta qr_generate dns_lookup http_error_explain tx_status wallet_balance gas_prices summarize_url translate_text tldr_text classify_text unshorten_url regex_test random_numbers random_pick http_check public_holiday x402_inspect x402_simulate tx_decode embed_text extract_structured moderate_text describe_image token_price payment_receipt resolve_basename x402_audit payment_proof settlement_assurance x402_discover x402_merchant usdc_normalize base_token_info base_allowance base_contract base_usdc_transfers jwt_decode base64 text_stats text_diff x402_test_vector current_time generate_uuid hash_string http_errors_list quartermaster_info
Run this server? Show the check in your README
The badge reflects the latest weekly read: 
[](https://lazaretto.dev/mcp-registry/app-surewhynot-quartermaster-quartermaster)How this was checked
Lazaretto connects to the endpoint the way any MCP client does, asks the server to introduce itself and list its tools, and reads every name, description, parameter schema and server instruction for tool poisoning: hidden directive blocks, orders to read local secrets, parameters built to carry secrets or the conversation out, orders that redirect another server's tools, and invisible characters. It never calls a tool. What we found across the registry.
To run the same check every time Claude Code adds a server, install the free lazaretto-guard plugin. Browse every server in the index.