# Services from quartermaster.surewhynot.app on Zero

> quartermaster.surewhynot.app serves 45 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/quartermaster.surewhynot.app
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/quartermaster.surewhynot.app/health.json

## Services

- [Quartermaster Content Safety Classifier (Llama Guard)](https://www.zero.xyz/c/quartermaster-content-safety-classifier-llama-guard-1d50311c/llms.txt): $0.002/call via x402, rated 5.0/5 (1 review). Classifies a text string for content safety using Llama Guard, returning a safe/unsafe verdict and category codes.
- [Quartermaster Zero-Shot Text Classifier](https://www.zero.xyz/c/quartermaster-zero-shot-text-classifier-a6125841/llms.txt): $0.002/call via x402. Classifies input text into one of caller-supplied labels using zero-shot AI, returning a validated label from the provided set for deterministic downstream routing.
- [Quartermaster Deep Read — AI Multi-Page Q&A](https://www.zero.xyz/c/quartermaster-deep-read-ai-multi-page-q-a-45753c7f/llms.txt): $0.05/call via x402. Fetches up to five URLs, reads their content, and synthesizes a sourced answer to a user question using Workers AI
- [Quartermaster Webpage Summarizer](https://www.zero.xyz/c/quartermaster-webpage-summarizer-1d2c251b/llms.txt): $0.01/call via x402. Fetches any public webpage and returns a factual AI-generated summary at short, medium, or long length.
- [Quartermaster TL;DR (Raw Text Summarizer)](https://www.zero.xyz/c/quartermaster-tl-dr-raw-text-summarizer-109a3520/llms.txt): $0.005/call via x402. Generates an AI-powered short, medium, or long summary of raw text passed directly as a query parameter.
- [Quartermaster ETH/ERC-20 Balance Checker on Base](https://www.zero.xyz/c/quartermaster-eth-erc-20-balance-checker-on-base-4eb3a932/llms.txt): $0.001/call via x402. Returns the ETH or ERC-20 (e.g. USDC) token balance of a given wallet address on the Base blockchain for pre-flight funding checks.
- [Quartermaster DNS-over-HTTPS Resolver](https://www.zero.xyz/c/quartermaster-dns-over-https-resolver-482a4f60/llms.txt): $0.001/call via x402. Resolves DNS records for a given hostname via DNS-over-HTTPS and returns structured JSON results supporting A, AAAA, CNAME, MX, NS, TXT, SOA, SRV, CAA, PTR, DNSKEY, DS, HTTPS, and SVCB record types.
- [Quartermaster ERC-20 Allowance Checker](https://www.zero.xyz/c/quartermaster-erc-20-allowance-checker-2b6133d1/llms.txt): $0.001/call via x402. Checks the ERC-20 token spending allowance granted by an owner to a spender on Base, and flags if the approval is unlimited.
- [Quartermaster HTTP Liveness & Latency Check](https://www.zero.xyz/c/quartermaster-http-liveness-latency-check-ac833eeb/llms.txt): $0.001/call via x402. Performs a pre-flight HTTP check on a URL, returning status code, response class, latency in milliseconds, redirect chain, content-type, and server header.
- [Quartermaster Image Description (AI Vision + OCR)](https://www.zero.xyz/c/quartermaster-image-description-ai-vision-ocr-10d073ff/llms.txt): $0.005/call via x402. Uses AI vision to describe any public image and extract visible text (OCR-lite) via a GET request with an image URL.
- [Quartermaster JWT Decoder](https://www.zero.xyz/c/quartermaster-jwt-decoder-b06c9542/llms.txt): $0.001/call via x402. Decodes a JWT token's header and payload into readable JSON without verifying the signature.
- [Webpage Metadata Extractor](https://www.zero.xyz/c/webpage-metadata-extractor-a09e1d2e/llms.txt): $0.002/call via x402. Fetches structured metadata from a public webpage including title, description, canonical URL, Open Graph fields, favicon, and language.
- [Quartermaster Payment Proof Verifier](https://www.zero.xyz/c/quartermaster-payment-proof-verifier-8c8c4046/llms.txt): $0.003/call via x402. Verifies a Base blockchain transaction for x402 settlement: confirms success, decodes USDC transfers, and optionally asserts the recipient wallet and amount.
- [Quartermaster Transaction Receipt](https://www.zero.xyz/c/quartermaster-transaction-receipt-855f132a/llms.txt): $0.002/call via x402. Returns a formatted settlement receipt for a Base transaction, including timestamp, status, decoded token transfers, and explorer link — optimized for x402 payment records.
- [quartermaster.surewhynot.app/v1/holiday](https://www.zero.xyz/c/quartermaster-surewhynot-app-v1-holiday-92259582/llms.txt): $0.001/call via x402. Checks whether a given date is a public holiday in a specified country and returns the holiday name, types, and next upcoming holiday that year.
- [quartermaster.surewhynot.app Random Integer Generator](https://www.zero.xyz/c/quartermaster-surewhynot-app-random-integer-generator-51ea9947/llms.txt): $0.001/call via x402. Returns one or more cryptographically-secure random integers within a caller-specified inclusive range, rejection-sampled to eliminate modulo bias.
- [quartermaster.surewhynot.app Random Picker](https://www.zero.xyz/c/quartermaster-surewhynot-app-random-picker-6ee3419f/llms.txt): $0.001/call via x402. Picks one or more options at random from a caller-supplied comma-separated list using a cryptographically-secure RNG, with optional without-replacement draws.
- [Quartermaster Regex Matcher](https://www.zero.xyz/c/quartermaster-regex-matcher-a883b6ff/llms.txt): $0.001/call via x402. Tests a regular expression against text and returns all matches with numbered and named capture groups
- [Quartermaster Settlement Assurance](https://www.zero.xyz/c/quartermaster-settlement-assurance-e6e3ecf7/llms.txt): $0.03/call via x402. Confirms a Base blockchain USDC payment succeeded, optionally validates wallet and amount, and returns a 0-100 scored settlement assurance report with a verdict.
- [Quartermaster Structured JSON Extraction](https://www.zero.xyz/c/quartermaster-structured-json-extraction-03b348f8/llms.txt): $0.005/call via x402. Extracts structured JSON from a URL or raw text using a caller-supplied JSON Schema to define the output shape.
- [Quartermaster Base ERC-20 Token Info](https://www.zero.xyz/c/quartermaster-base-erc-20-token-info-7996a17e/llms.txt): $0.001/call via x402. Returns the name, symbol, decimals, and total supply for any ERC-20 token contract on the Base blockchain.
- [Quartermaster Token Price API](https://www.zero.xyz/c/quartermaster-token-price-api-04047bf5/llms.txt): $0.001/call via x402. Returns the current USD price for major crypto tokens by symbol or any Base ERC-20 by contract address, with automatic source failover.
- [Quartermaster Base Transaction Status Checker](https://www.zero.xyz/c/quartermaster-base-transaction-status-checker-f25ca23f/llms.txt): $0.002/call via x402. Checks the status of a Base blockchain transaction by hash, returning success/reverted/pending state, confirmation count, gas used, and an explorer link.
- [URL Unshortener / Redirect Chain Expander](https://www.zero.xyz/c/url-unshortener-redirect-chain-expander-d7b73274/llms.txt): $0.002/call via x402. Follows a shortened or redirecting URL server-side through every hop and returns the full redirect chain plus final destination, with SSRF validation at each step.
- [Quartermaster QR Code Generator](https://www.zero.xyz/c/quartermaster-qr-code-generator-9ab5dcbe/llms.txt): $0.002/call via x402. Generates a QR code from a text or URL string, returned as SVG or terminal block art
- [Quartermaster Base Wallet Profile Report](https://www.zero.xyz/c/quartermaster-base-wallet-profile-report-d5816ae6/llms.txt): $0.04/call via x402. Returns a bundled on-chain profile for a Base address: USDC balance, recent USDC transfers in/out, EOA-vs-contract classification, and x402 Bazaar merchant listings if applicable.
- [quartermaster.surewhynot.app Web Text Extractor](https://www.zero.xyz/c/quartermaster-surewhynot-app-web-text-extractor-0ad8c02c/llms.txt): $0.005/call via x402. Fetches a public webpage URL and returns clean, readable text plus metadata as structured JSON for AI agents.
- [Quartermaster x402 Endpoint Auditor](https://www.zero.xyz/c/quartermaster-x402-endpoint-auditor-f7b0154b/llms.txt): $0.01/call via x402. Audits an x402-enabled paid endpoint for protocol compliance, scoring its 402 challenge, payment fields, Bazaar discovery metadata, and discovery surfaces with a 0-100 score and actionable fixes.
- [Quartermaster x402 Bazaar Scout](https://www.zero.xyz/c/quartermaster-x402-bazaar-scout-fe89dfbf/llms.txt): $0.05/call via x402. Searches the Coinbase x402 Bazaar for a capability, live-probes the top candidates for liveness and latency, and returns a ranked shortlist with a best-value pick.
- [Quartermaster x402 Bazaar Discovery Search](https://www.zero.xyz/c/quartermaster-x402-bazaar-discovery-search-b502185c/llms.txt): $0.001/call via x402. Search the Coinbase x402 Bazaar for paid API resources using a natural-language query
- [Quartermaster x402 Endpoint Inspector & Linter](https://www.zero.xyz/c/quartermaster-x402-endpoint-inspector-linter-b493f999/llms.txt): $0.002/call via x402. Fetches and decodes the 402 payment challenge from any x402-enabled endpoint, identifies the network and asset, and flags misconfigurations including missing Bazaar discovery metadata.
- [Quartermaster x402 Merchant Resource Lookup](https://www.zero.xyz/c/quartermaster-x402-merchant-resource-lookup-c558d5ad/llms.txt): $0.001/call via x402. Lists all x402 Bazaar resources registered under a given merchant's payTo wallet address.
- [quartermaster.surewhynot.app x402 Payment Pre-flight Simulator](https://www.zero.xyz/c/quartermaster-surewhynot-app-x402-payment-pre-flight-simulator-90743190/llms.txt): $0.003/call via x402. Decodes an x402 payment challenge for a given endpoint, reports costs across Base and Solana rails, identifies the cheapest option, and optionally verifies a wallet's affordability on Base.
- [quartermaster.surewhynot.app Transaction Decoder](https://www.zero.xyz/c/quartermaster-surewhynot-app-transaction-decoder-ae08200d/llms.txt): $0.003/call via x402. Decodes a Base blockchain transaction's calldata into a human-readable function name and arguments, recognizing ERC-20 transfer/approve and EIP-3009 transferWithAuthorization used in x402 settlements.
- [quartermaster.surewhynot.app – x402 Audit Pro (Deep Trust Report)](https://www.zero.xyz/c/quartermaster-surewhynot-app-x402-audit-pro-deep-trust-report-9e17a958/llms.txt): $0.05/call via x402. Performs a deep premium audit of any x402 paid endpoint, including live rail coverage probing (Base/Solana), multi-rail detection, HTTP status, and latency measurement.
- [Quartermaster Basename Resolver](https://www.zero.xyz/c/quartermaster-basename-resolver-d9327662/llms.txt): $0.001/call via x402. Resolves a Basename (.base.eth) to its associated wallet address on the Base network.
- [quartermaster.surewhynot.app Text Stats](https://www.zero.xyz/c/quartermaster-surewhynot-app-text-stats-db2cd3c5/llms.txt): $0.001/call via x402. Returns word, sentence, and paragraph counts, estimated reading time, and readability score for a given text string.
- [Quartermaster Base Contract Checker](https://www.zero.xyz/c/quartermaster-base-contract-checker-add542a6/llms.txt): $0.001/call via x402. Determines whether a given Base blockchain address is a smart contract or an externally-owned account (EOA).
- [quartermaster.surewhynot.app Text Translation](https://www.zero.xyz/c/quartermaster-surewhynot-app-text-translation-72a0d79f/llms.txt): $0.005/call via x402. Translates any text into a specified target language using AI, with automatic source language detection.
- [Quartermaster Base64 Encode/Decode](https://www.zero.xyz/c/quartermaster-base64-encode-decode-679f4a66/llms.txt): $0.001/call via x402. Encodes a string to Base64 or decodes a Base64 string back to plain text via a simple GET request.
- [Quartermaster Text Embeddings](https://www.zero.xyz/c/quartermaster-text-embeddings-bf1eac64/llms.txt): $0.002/call via x402. Converts a text string (up to 8000 characters) into a 1024-dimensional semantic vector suitable for semantic search and RAG pipelines.
- [Base Gas Price & Transfer Cost Estimator](https://www.zero.xyz/c/base-gas-price-transfer-cost-estimator-91c2ce42/llms.txt): $0.001/call via x402. Returns current Base network gas prices and a simple ETH transfer cost estimate for transaction planning.
- [quartermaster.surewhynot.app – Line-Level Diff](https://www.zero.xyz/c/quartermaster-surewhynot-app-line-level-diff-a6652fe5/llms.txt): $0.001/call via x402. Returns a compact line-level diff between two text strings, showing what changed between a 'before' and 'after' version.
- [Quartermaster HTTP Error Reference — Status 429](https://www.zero.xyz/c/quartermaster-http-error-reference-status-429-66c129d9/llms.txt): $0.001/call via x402. Returns the canonical definition, meaning, and usage context for HTTP status code 429 (Too Many Requests)
- [Quartermaster x402 Router](https://www.zero.xyz/c/quartermaster-x402-router-76d35d00/llms.txt): $0.03/call via x402. Accepts a plain-English goal and automatically routes it to the right tool from the full Quartermaster toolkit, returning the answer plus which tool was used.

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

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