# Services from api.geekvault.dev on Zero

> api.geekvault.dev serves 48 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/api.geekvault.dev
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/api.geekvault.dev/health.json

## Services

- [GeekVault Web Screenshot API](https://www.zero.xyz/c/geekvault-web-screenshot-api-5cd457f9/llms.txt): $0.002/call via x402. Captures a screenshot of any public web page by URL and returns the image as binary data, paid per call via x402/USDC.
- [GeekVault Broken Link Checker](https://www.zero.xyz/c/geekvault-broken-link-checker-6089890d/llms.txt): $0.01/call via x402. Crawls a given URL and returns a list of all broken (non-OK) hyperlinks found on that page, along with their HTTP status codes.
- [GeekVault Loan Calculator](https://www.zero.xyz/c/geekvault-loan-calculator-1078d44a/llms.txt): $0.002/call via x402. Calculates monthly payment, total paid, and total interest for a loan given principal, term, and annual interest rate
- [GeekVault TOTP Code Generator](https://www.zero.xyz/c/geekvault-totp-code-generator-abf3b0b3/llms.txt): $0.002/call via x402. Generates a TOTP (Time-based One-Time Password) code from a Base32 secret, returning the current code and its remaining validity window.
- [GeekVault Password Generator](https://www.zero.xyz/c/geekvault-password-generator-096405d4/llms.txt): $0.002/call via x402. Generates one or more random passwords with configurable length, numbers, symbols, and uppercase characters
- [GeekVault Redirect Trace](https://www.zero.xyz/c/geekvault-redirect-trace-bd009a14/llms.txt): $0.002/call via x402. Traces the full chain of HTTP redirects for a given URL, returning each hop's URL and status code plus the final destination URL.
- [GeekVault CIDR Calculator](https://www.zero.xyz/c/geekvault-cidr-calculator-41b2cef7/llms.txt): $0.002/call via x402. Calculates all key IPv4 subnet details from a CIDR notation input, including network address, broadcast, netmask, host range, and address counts.
- [GeekVault Unit Converter](https://www.zero.xyz/c/geekvault-unit-converter-cd81f884/llms.txt): $0.002/call via x402. Converts a numeric value from one unit to another across multiple measurement categories, returning the converted result.
- [GeekVault DNS Lookup](https://www.zero.xyz/c/geekvault-dns-lookup-aace93bc/llms.txt): $0.002/call via x402. Performs a DNS lookup for a given hostname and returns the resolved records for a specified record type (A, AAAA, MX, TXT, NS, CNAME, or SOA).
- [GeekVault Cron Expression Explainer](https://www.zero.xyz/c/geekvault-cron-expression-explainer-612a7b1f/llms.txt): $0.002/call via x402. Accepts a 5-field cron expression and returns a plain-language explanation of what it means and when it triggers.
- [GeekVault Port Scanner](https://www.zero.xyz/c/geekvault-port-scanner-4bb1d166/llms.txt): $0.01/call via x402. Scans a host's TCP ports to determine which are open or closed, returning per-port open/closed status.
- [GeekVault Article Extractor](https://www.zero.xyz/c/geekvault-article-extractor-867cf7ff/llms.txt): $0.005/call via x402. Fetches a web article by URL and returns its title and main content as clean Markdown, stripping ads and navigation clutter.
- [GeekVault SSL Certificate Checker](https://www.zero.xyz/c/geekvault-ssl-certificate-checker-3f1a27c3/llms.txt): $0.002/call via x402. Retrieves TLS/SSL certificate details for a given host, including subject, issuer, and validity dates
- [GeekVault HTTP Headers Audit](https://www.zero.xyz/c/geekvault-http-headers-audit-501e1ce0/llms.txt): $0.002/call via x402. Audits a URL's HTTP response headers, returning which security and best-practice headers are present (with values) and which are missing.
- [GeekVault Strip EXIF](https://www.zero.xyz/c/geekvault-strip-exif-cb2eb929/llms.txt): $0.002/call via x402. Removes EXIF metadata from an image file and returns the sanitized image bytes
- [GeekVault JWT Decode](https://www.zero.xyz/c/geekvault-jwt-decode-06ac9cb9/llms.txt): $0.002/call via x402. Decodes a JWT token into its header and payload components without signature verification
- [GeekVault UUID Generator](https://www.zero.xyz/c/geekvault-uuid-generator-e38f36ee/llms.txt): $0.002/call via x402. Generates one or more RFC-compliant UUIDs (up to 100 at a time) via a simple GET request, paid per call with USDC on Base.
- [GeekVault QR Code Decoder](https://www.zero.xyz/c/geekvault-qr-code-decoder-e10e6349/llms.txt): $0.002/call via x402. Decodes QR codes from an uploaded image file, returning all detected codes and their count
- [GeekVault Traceroute](https://www.zero.xyz/c/geekvault-traceroute-f7c5b936/llms.txt): $0.008/call via x402. Performs a traceroute to a specified host and returns the list of network hops along the path
- [GeekVault Network Ping Tool](https://www.zero.xyz/c/geekvault-network-ping-tool-c00a3cd0/llms.txt): $0.005/call via x402. Checks whether a given host is reachable by performing a ping operation and returns the result with raw output
- [GeekVault HMAC Generator](https://www.zero.xyz/c/geekvault-hmac-generator-44ba1ca6/llms.txt): $0.002/call via x402. Computes an HMAC (Hash-based Message Authentication Code) for a given message and secret key using a specified hash algorithm (default SHA-256).
- [GeekVault Base64 Encoder/Decoder](https://www.zero.xyz/c/geekvault-base64-encoder-decoder-106b3f12/llms.txt): $0.002/call via x402. Encodes plain text to Base64 or decodes Base64 strings back to plain text, paid per call via x402 USDC.
- [GeekVault Image Metadata Extractor](https://www.zero.xyz/c/geekvault-image-metadata-extractor-a4866c32/llms.txt): $0.002/call via x402. Extracts width, height, format, and EXIF metadata from an uploaded image file
- [GeekVault Dominant Colors Extractor](https://www.zero.xyz/c/geekvault-dominant-colors-extractor-1c6af774/llms.txt): $0.003/call via x402. Analyzes an uploaded image file and returns the dominant colors as hex codes with pixel counts
- [GeekVault OCR — Optical Character Recognition](https://www.zero.xyz/c/geekvault-ocr-optical-character-recognition-eec9496d/llms.txt): $0.01/call via x402. Extracts text from an image file using optical character recognition (OCR), returning the recognized text as a string.
- [GeekVault Docs-to-Markdown Converter](https://www.zero.xyz/c/geekvault-docs-to-markdown-converter-d28f289c/llms.txt): $0.003/call via x402. Converts a document file (e.g. PDF, DOCX, or similar) into Markdown text, paid per call via x402/USDC.
- [GeekVault PDF Export](https://www.zero.xyz/c/geekvault-pdf-export-2bcada9e/llms.txt): $0.01/call via x402. Converts a web page URL into a downloadable PDF binary, paid per call via x402/USDC with no API key required.
- [GeekVault QR Code Generator](https://www.zero.xyz/c/geekvault-qr-code-generator-52cf6de2/llms.txt): $0.002/call via x402. Generates a QR code image from a text string, returned as a binary image file
- [GeekVault Statistics Calculator](https://www.zero.xyz/c/geekvault-statistics-calculator-fb38de0a/llms.txt): $0.002/call via x402. Computes descriptive statistics (count, sum, mean, median, mode, min, max, variance, standard deviation) for a comma-separated list of numbers
- [GeekVault WHOIS Lookup](https://www.zero.xyz/c/geekvault-whois-lookup-005447de/llms.txt): $0.003/call via x402. Performs a WHOIS lookup for a given hostname or domain and returns the raw WHOIS record data.
- [GeekVault ASN Lookup](https://www.zero.xyz/c/geekvault-asn-lookup-313194b0/llms.txt): $0.003/call via x402. Resolves a hostname or IPv4 address to its Autonomous System Number (ASN), prefix, AS name, country, and registry information.
- [GeekVault Web Metadata Extractor](https://www.zero.xyz/c/geekvault-web-metadata-extractor-1355b368/llms.txt): $0.003/call via x402. Fetches and extracts metadata (title, description, Open Graph tags, favicon, canonical URL) from any given web page URL.
- [GeekVault ULID Generator](https://www.zero.xyz/c/geekvault-ulid-generator-0aa7b0d7/llms.txt): $0.002/call via x402. Generates one or more ULIDs (Universally Unique Lexicographically Sortable Identifiers) on demand, paid per call via USDC on Base.
- [GeekVault Web Tech Detector](https://www.zero.xyz/c/geekvault-web-tech-detector-f842d170/llms.txt): $0.003/call via x402. Detects the technology stack of a website by analyzing its HTTP headers and returning a list of identified technologies.
- [GeekVault Regex Test](https://www.zero.xyz/c/geekvault-regex-test-ea92fe75/llms.txt): $0.002/call via x402. Tests a regex pattern against a text string and returns whether it matches plus all captured match strings
- [GeekVault IP Blacklist Check](https://www.zero.xyz/c/geekvault-ip-blacklist-check-9923375a/llms.txt): $0.004/call via x402. Checks whether a given IPv4 address appears on any known blacklists or spam/abuse databases
- [GeekVault Email Auth Check (SPF/DMARC Lookup)](https://www.zero.xyz/c/geekvault-email-auth-check-spf-dmarc-lookup-a2a752ac/llms.txt): $0.002/call via x402. Checks a domain's email authentication records (SPF and DMARC) to assess its email security configuration.
- [GeekVault JSON Validate](https://www.zero.xyz/c/geekvault-json-validate-5b8175d9/llms.txt): $0.002/call via x402. Validates a JSON string or object for correctness and well-formedness, returning validation status and error details
- [GeekVault CDN Fingerprint](https://www.zero.xyz/c/geekvault-cdn-fingerprint-a36f86fa/llms.txt): $0.004/call via x402. Detects which CDN or hosting provider is serving a given URL by inspecting HTTP response headers
- [GeekVault Hash API](https://www.zero.xyz/c/geekvault-hash-api-78e89f34/llms.txt): $0.002/call via x402. Computes a cryptographic hash of a given text string using a specified algorithm (default: SHA-256)
- [GeekVault Hex Encoder/Decoder](https://www.zero.xyz/c/geekvault-hex-encoder-decoder-66b2c639/llms.txt): $0.002/call via x402. Encodes plain text to hexadecimal representation or decodes hex strings back to plain text
- [GeekVault PDF Metadata Extractor](https://www.zero.xyz/c/geekvault-pdf-metadata-extractor-96946e87/llms.txt): $0.002/call via x402. Extracts metadata fields (author, title, creation date, etc.) from a PDF file, returning them as key-value pairs.
- [GeekVault Image Convert](https://www.zero.xyz/c/geekvault-image-convert-f44d5c89/llms.txt): $0.003/call via x402. Converts an uploaded image file to a different format, returning the converted image as binary data, paid per call via x402/USDC.
- [GeekVault Image Rotate](https://www.zero.xyz/c/geekvault-image-rotate-89c688e6/llms.txt): $0.003/call via x402. Rotates an uploaded image file and returns the transformed image binary via x402 micropayment
- [GeekVault Arithmetic Expression Calculator](https://www.zero.xyz/c/geekvault-arithmetic-expression-calculator-f9bfe9de/llms.txt): $0.002/call via x402. Evaluates an arithmetic expression string and returns the numeric result
- [GeekVault Image Resize](https://www.zero.xyz/c/geekvault-image-resize-cd995029/llms.txt): $0.002/call via x402. Resizes an uploaded image file, returning the resized image as binary data, paid per call via x402/USDC.
- [GeekVault JSON Format](https://www.zero.xyz/c/geekvault-json-format-1a594cde/llms.txt): $0.002/call via x402. Formats and prettifies raw JSON strings into structured, human-readable output
- [GeekVault Image Crop API](https://www.zero.xyz/c/geekvault-image-crop-api-e8356431/llms.txt): $0.003/call via x402. Crops an uploaded image file and returns the cropped image as binary data, paid per call via x402/USDC.

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

- [Zero catalog index](https://www.zero.xyz/llms.txt)