app.surewhynot.quartermaster/quartermaster MCP server

Text embeddings (1024-dim vector) for semantic search and RAG. Costs $0.002.

USD price for major tokens by symbol or any Base ERC-20 by address. Costs $0.001.

Verify an x402 settlement from a tx hash: confirm the Base tx 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_assurance for the full scored report (proof + receipt + optional endpoint audit).

Formatted settlement receipt for a Base transaction: 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 scored verdict.

FLAGSHIP: from a tx hash, 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. Costs $0.03. This is the most complete post-payment check; use payment_proof if you only need a plain pass/fail, tx_status for raw status, or x402_audit to grade a seller endpoint by URL (no payment yet).

Convert USDC amounts between atomic units and human decimals. Costs $0.001.

ERC-20 name, symbol, decimals, total supply for a token on Base. Costs $0.001.

Decode a JWT header and payload (signature NOT verified). Costs $0.001.

Free: example x402 payment-requirement objects with field explanations.

FREE (no wallet needed): index of documented HTTP status codes (use http_error_explain for a paid detailed explanation).

Recent USDC transfers (in and out) for an address on Base. Costs $0.002.

Compact line-level diff between two texts. Costs $0.001.

FREE (no wallet needed): SHA-1/256/384/512 hex digest of a string.

Get page metadata: title, description, Open Graph, canonical URL, favicon, language. Costs $0.002.

Generate a QR code as SVG (or terminal text with format=text). Costs $0.002.

ETH and USDC (or any ERC-20) balance for an address on Base. Costs $0.001.

Current Base gas prices with a simple-transfer cost estimate. Costs $0.001.

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.

AI vision: describe a public image URL, including visible text. Costs $0.005.

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.

AI translation into any target language; source auto-detected. Costs $0.005.

Content-safety classification (Llama Guard): safe flag plus category codes. Costs $0.002.

Resolve a Basename (.base.eth) to a wallet address on Base. Costs $0.001.

Search the Coinbase x402 Bazaar for paid resources by natural-language query. Costs $0.001.

Check an ERC-20 spending allowance on Base; flags unlimited approvals. Costs $0.001.

Base64 encode or decode a string. Costs $0.001.

FREE (no wallet needed): current time as ISO, unix, UTC, and optional local time for an IANA timezone.

Extract clean readable text and metadata from a public webpage as structured JSON. Costs $0.005 (USDC via x402).

Explain an HTTP status code: meaning, common causes, fixes, retry guidance. Costs $0.001.

AI summary of a public webpage (fetch + extract + summarize). length: short|medium|long. Costs $0.01.

Structured extraction: JSON Schema plus a URL or raw text in, matching JSON out. Costs $0.005.

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 endpoint before trusting/publishing it; use settlement_assurance instead when you already have a transaction hash and want to prove a completed PAYMENT settled correctly.

List all x402 Bazaar resources under a merchant payTo wallet. Costs $0.001.

Determine whether a Base address is a contract or an EOA. Costs $0.001.

Word/sentence counts, reading time, and readability score for text. Costs $0.001.

FREE (no wallet needed): generate UUID v4 values, up to 100 at once.

Resolve DNS records over DNS-over-HTTPS (A, AAAA, CNAME, MX, NS, TXT, and more). Costs $0.001.

Free: catalog, prices, and payment instructions for this server.