MCP server

Surewhynot Quartermaster Official

app.surewhynot.quartermaster/quartermaster

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

x402 toolkit for AI agents: paid web, AI, and Base chain tools per call in USDC. Free tools too.

Website

At a glance

Type

MCP server

Publisher

surewhynot.app (verified by the MCP Registry)

Status

Working at last check

Tools

49

Token cost

About 4,572 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http quartermaster https://quartermaster.surewhynot.app/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.quartermaster]
url = "https://quartermaster.surewhynot.app/mcp"

Gemini CLI

{"mcpServers":{"quartermaster":{"httpUrl":"https://quartermaster.surewhynot.app/mcp"}}}

Cursor

{"mcpServers":{"quartermaster":{"url":"https://quartermaster.surewhynot.app/mcp"}}}

VS Code

{"servers":{"quartermaster":{"type":"http","url":"https://quartermaster.surewhynot.app/mcp"}}}

Antigravity

agy mcp add quartermaster https://quartermaster.surewhynot.app/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"quartermaster","server_url":"https://quartermaster.surewhynot.app/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"quartermaster","server_url":"https://quartermaster.surewhynot.app/mcp"}

Tools

• base64 ~66 tokens
  [Dev] Base64 encode or decode a string. Costs $0.001.
• base_allowance ~82 tokens
  Check an ERC-20 spending allowance on Base; flags unlimited approvals. Costs $0.001.
• base_contract ~61 tokens
  Determine whether a Base address is a contract or an EOA. Costs $0.001.
• base_token_info ~63 tokens
  ERC-20 name, symbol, decimals, total supply for a token on Base. Costs $0.001.
• base_usdc_transfers ~70 tokens
  Recent USDC transfers (in and out) for an address on Base. Costs $0.002.
• classify_text ~114 tokens
  [AI] Zero-shot classification of text into caller-supplied labels; the result is validated back into your label set so you can route on it. Costs $0.002.
• current_time ~79 tokens
  FREE (no wallet needed): current time as ISO, unix, UTC, and optional local time for an IANA timezone.
• describe_image ~70 tokens
  [AI] AI vision: describe a public image URL, including visible text. Costs $0.005.
• dns_lookup ~74 tokens
  [Web] Resolve DNS records over DNS-over-HTTPS (A, AAAA, CNAME, MX, NS, TXT, and more). Costs $0.001.
• embed_text ~66 tokens
  [AI] Text embeddings (1024-dim vector) for semantic search and RAG. Costs $0.002.
• extract_structured ~95 tokens
  Structured extraction: JSON Schema plus a URL or raw text in, matching JSON out. Costs $0.005.
• gas_prices ~51 tokens
  [Crypto/Base] Current Base gas prices with a simple-transfer cost estimate. Costs $0.001.
• generate_uuid ~62 tokens
  FREE (no wallet needed): generate UUID v4 values, up to 100 at once.
• hash_string ~76 tokens
  FREE (no wallet needed): SHA-1/256/384/512 hex digest of a string.
• http_check ~97 tokens
  [Web] Liveness/latency pre-flight for a URL: is it up, HTTP status and class, response latency in ms, whether it redirects and where, content-type and server. Costs $0.001. Use before relying on a dependency.
• http_error_explain ~68 tokens
  [Web] Explain an HTTP status code: meaning, common causes, fixes, retry guidance. Costs $0.001.
• http_errors_list ~61 tokens
  FREE (no wallet needed): index of documented HTTP status codes (use http_error_explain for a paid detailed explanation).
• jwt_decode ~60 tokens
  [Dev] Decode a JWT header and payload (signature NOT verified). Costs $0.001.
• moderate_text ~71 tokens
  [AI] Content-safety classification (Llama Guard): safe flag plus category codes. Costs $0.002.
• page_meta ~67 tokens
  [Web] Get page metadata: title, description, Open Graph, canonical URL, favicon, language. Costs $0.002.
• payment_proof ~201 tokens
  [x402] Verify an x402 settlement on Base OR Solana from a tx id (0x hash or base58 signature): confirm it succeeded, decode its USDC transfers, optionally assert payTo/amount - returns a single verdict. Costs $0.003. Choose this when you only need the yes/no did-it-land answer; use settlement_assura
• payment_receipt ~146 tokens
  [x402] Formatted settlement receipt for a Base transaction (0x hash) or Solana settlement (base58 signature): timestamp, decoded transfers, explorer link. Costs $0.002. Choose this for a human-readable record; use payment_proof to ASSERT a specific payTo/amount, or settlement_assurance for a full sc
• public_holiday ~110 tokens
  [Dev] Is a date a public holiday in a country (2-letter ISO code)? Returns the holiday name, its types, and the next upcoming holiday. Costs $0.001. Useful for scheduling.
• qr_generate ~94 tokens
  [Web] Generate a QR code as SVG (or terminal text with format=text). Costs $0.002.
• quartermaster_info ~46 tokens
  Free: catalog, prices, and payment instructions for this server.
• random_numbers ~87 tokens
  [Dev] Cryptographically-secure random integers in a range (CSPRNG, unbiased) — real entropy an LLM cannot produce itself. Costs $0.001.
• random_pick ~103 tokens
  [Dev] Pick one or several options at random from a caller-supplied list (CSPRNG), optionally without replacement. Costs $0.001.
• regex_test ~104 tokens
  [Dev] Test a regular expression against text; returns every match with numbered and named capture groups. Deterministic. Costs $0.001.
• resolve_basename ~60 tokens
  Resolve a Basename (.base.eth) to a wallet address on Base. Costs $0.001.
• settlement_assurance ~247 tokens
  [x402] FLAGSHIP: from a tx id on Base (0x hash) or Solana (base58 signature), prove a completed x402 payment is real and sound - onchain success, USDC transfer match to an expected wallet/amount, a receipt, and an optional audit of the issuing endpoint - as one 0-100 scored report with a verdict. Co
• summarize_url ~86 tokens
  [AI] AI summary of a public webpage (fetch + extract + summarize). length: short|medium|long. Costs $0.01.
• text_diff ~66 tokens
  [Dev] Compact line-level diff between two texts. Costs $0.001.
• text_stats ~63 tokens
  [Dev] Word/sentence counts, reading time, and readability score for text. Costs $0.001.
• tldr_text ~101 tokens
  [AI] Summarize raw text you pass in directly (not a URL). length: short|medium|long. Costs $0.005. Use summarize_url when you have a URL instead.
• token_price ~66 tokens
  [Crypto/Base] USD price for major tokens by symbol or any Base ERC-20 by address. Costs $0.001.
• translate_text ~75 tokens
  [AI] AI translation into any target language; source auto-detected. Costs $0.005.
• tx_decode ~144 tokens
  [Crypto/Base] Decode a Base transaction's calldata into the function it called and its arguments — ERC-20 transfer/approve and the EIP-3009 transferWithAuthorization used by x402 settlements. Recognizes x402 settlement transactions and formats USDC amounts. Costs $0.003. Use tx_status for pass/fail;
• tx_status ~126 tokens
  [Crypto/Base] Check a Base transaction: success/reverted/pending, confirmations, gas, explorer link. Costs $0.002. Choose this for a quick raw status; use payment_receipt for decoded transfers, or settlement_assurance to PROVE an x402 payment settled to the right wallet/amount.
• unshorten_url ~96 tokens
  [Web] Expand a shortened/redirecting URL: follow the redirect chain and return every hop plus the final destination. Each hop is SSRF-validated. Costs $0.002. Safe way to see where an untrusted link goes.
• usdc_normalize ~88 tokens
  Convert USDC amounts between atomic units and human decimals. Costs $0.001.
• wallet_balance ~73 tokens
  [Crypto/Base] ETH and USDC (or any ERC-20) balance for an address on Base. Costs $0.001.
• web_extract ~81 tokens
  [Web] Extract clean readable text and metadata from a public webpage as structured JSON. Costs $0.005 (USDC via x402).
• x402_audit ~182 tokens
  [x402] WORKFLOW: full scored audit of an x402 SELLER endpoint (a URL) in one call - verifies the 402 challenge, payment fields, Bazaar discovery metadata, and the origin's discovery surfaces; returns a 0-100 score, checks with evidence, and recommended fixes. Costs $0.01. Use this to grade an endpoi
• x402_discover ~75 tokens
  [x402] Search the Coinbase x402 Bazaar for paid resources by natural-language query. Costs $0.001.
• x402_inspect ~124 tokens
  [x402] Inspect and lint any x402 paid endpoint: decode the 402 challenge, identify network/asset, flag misconfigurations and Bazaar-readiness. Costs $0.002. Choose this for a quick one-shot decode+lint; use x402_audit for a full 0-100 scored report with origin discovery probes and recommended fixes.
• x402_merchant ~70 tokens
  [x402] List all x402 Bazaar resources under a merchant payTo wallet. Costs $0.001.
• x402_router ~178 tokens
  START HERE. One tool for anything x402, Base chain, or web/AI: describe your goal in plain English (q) and Quartermaster picks and runs the right underlying tool, returning the answer plus which tool it used. Examples: 'audit https://api.example.com/paid', 'price of eth', 'is 0x… a contract', 'verif
• x402_simulate ~178 tokens
  [x402] Pre-flight a payment BEFORE you spend: decode an endpoint's 402 challenge, report the cost on every rail (Base and Solana) and the cheapest, and — with an optional payer address — verify the wallet can afford the call on Base. Costs $0.003. Use this before paying an unfamiliar endpoint; use x
• x402_test_vector ~49 tokens
  [x402] Free: example x402 payment-requirement objects with field explanations.

Browse

• Domains and DNS
• Searching your documents (RAG)
• Travel and flights
• Crypto and blockchains

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