# Services from api.relaystation.ai on Zero

> api.relaystation.ai serves 158 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.relaystation.ai
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/api.relaystation.ai/health.json

## Services

- [Relaystation LLM Extract](https://www.zero.xyz/c/relaystation-llm-extract-3f700fa6/llms.txt): $0.01/call via x402, rated 4.7/5 (1 review). Pulls specified fields out of any input text and returns them as clean, schema-shaped JSON using a cost-efficient LLM.
- [Relaystation Web Screenshot](https://www.zero.xyz/c/relaystation-web-screenshot-0c96d7a5/llms.txt): $0.01/call via x402. Captures a screenshot of any public web page as PNG, JPEG, or WebP using headless Chromium with SSRF protection
- [Relaystation ID Verify](https://www.zero.xyz/c/relaystation-id-verify-d7b93234/llms.txt): $0.1/call via x402. Performs full KYC in a single API call — verifying a government-issued ID, running liveness detection, and matching the applicant's face to the ID photo.
- [Relaystation HTML to Image](https://www.zero.xyz/c/relaystation-html-to-image-7eaabc3a/llms.txt): $0.01/call via x402. Renders an HTML string to a PNG/image using a sandboxed headless Chromium instance and returns the screenshot
- [Relaystation PDF Render](https://www.zero.xyz/c/relaystation-pdf-render-6ae52b59/llms.txt): $0.01/call via x402. Rasterizes individual PDF pages to PNG or JPEG images, suitable for previews, thumbnails, and vision-model input
- [Relaystation Extract Tables](https://www.zero.xyz/c/relaystation-extract-tables-3738e584/llms.txt): $0.08/call via x402. Extracts structured tables from documents as rows and columns using AWS Textract, returning clean tabular data instead of raw text.
- [Relaystation JSON Repair](https://www.zero.xyz/c/relaystation-json-repair-c0cfd78a/llms.txt): $0.01/call via x402. Fixes malformed JSON (truncated, mis-quoted, trailing commas, etc.) into valid, parseable output using LLM-based repair at low cost
- [Relaystation Proofread](https://www.zero.xyz/c/relaystation-proofread-50849e09/llms.txt): $0.01/call via x402. Fix spelling, grammar, and punctuation in text without changing its meaning, using an LLM at a fraction of frontier model cost.
- [Relaystation Markdown to HTML Converter](https://www.zero.xyz/c/relaystation-markdown-to-html-converter-23521135/llms.txt): $0.01/call via x402. Converts Markdown text to sanitized, embed-safe HTML with whitelist-based XSS protection
- [Relaystation Three-Way Text Merge](https://www.zero.xyz/c/relaystation-three-way-text-merge-95e42bfa/llms.txt): $0.01/call via x402. Performs a three-way merge of two edited versions of a text against a common base, inserting conflict markers where edits overlap.
- [Relaystation Invoice & Receipt Parser](https://www.zero.xyz/c/relaystation-invoice-receipt-parser-f83f5f51/llms.txt): $0.055/call via x402. Parses invoices and receipts from uploaded files into structured fields (vendor, totals, dates, line items, SKUs) using AWS Textract AnalyzeExpense for $0.055 per document.
- [Relaystation Image Canvas Extend](https://www.zero.xyz/c/relaystation-image-canvas-extend-2b9b4f71/llms.txt): $0.01/call via x402. Extends an image's canvas on any side (top, bottom, left, right) by a specified number of pixels, filling the new area with a background color, copy, repeat, or mirror of the original.
- [Relaystation AI Text Translation](https://www.zero.xyz/c/relaystation-ai-text-translation-bfe71631/llms.txt): $0.01/call via x402. Translates text to a target language preserving meaning and tone, at high accuracy (~Opus-4.8 level) for roughly 1–5% of the cost
- [Relaystation Silence Detection & Trimming](https://www.zero.xyz/c/relaystation-silence-detection-trimming-ba1aad1f/llms.txt): $0.01/call via x402. Detects silent intervals in audio as JSON or trims silence out of audio files to produce tighter, cleaner recordings.
- [Relaystation PDF Form Fill](https://www.zero.xyz/c/relaystation-pdf-form-fill-ed737ab6/llms.txt): $0.01/call via x402. Programmatically fill or flatten PDF forms by submitting field values and receiving a completed PDF document in return.
- [Relaystation Mustache Template Renderer](https://www.zero.xyz/c/relaystation-mustache-template-renderer-e1bb3ce0/llms.txt): $0.01/call via x402. Renders a logic-less Mustache-subset template safely against a provided data context, with no eval and injection protection.
- [Relaystation QR Code Generator](https://www.zero.xyz/c/relaystation-qr-code-generator-4bec8554/llms.txt): $0.01/call via x402. Generate QR codes as PNG or SVG images with configurable size, error-correction level, and margin
- [RelayStation Face Detection API](https://www.zero.xyz/c/relaystation-face-detection-api-0dfb5b8c/llms.txt): $0.01/call via x402. Detects faces in an image and returns attributes including age range, emotions, pose, and facial landmarks using AWS Rekognition.
- [Relaystation XLSX to CSV/JSON Parser](https://www.zero.xyz/c/relaystation-xlsx-to-csv-json-parser-e7be9ecc/llms.txt): $0.01/call via x402. Parses an uploaded Excel (.xlsx) file into structured CSV or JSON, handling multiple sheets, headers, and data type detection.
- [RelayStation Image Blur](https://www.zero.xyz/c/relaystation-image-blur-4fd538eb/llms.txt): $0.01/call via x402. Applies Gaussian blur to an image at a configurable strength, suitable for background blurring, redactions, and thumbnail softening.
- [Relaystation Web to PDF](https://www.zero.xyz/c/relaystation-web-to-pdf-13f610f3/llms.txt): $0.02/call via x402. Renders any public web page to a PDF file using headless Chromium with SSRF-guarded egress
- [Relaystation Media Probe](https://www.zero.xyz/c/relaystation-media-probe-0a66ece8/llms.txt): $0.01/call via x402. Inspects any media file via ffprobe and returns duration, container format, streams, codecs, dimensions, and bitrate as structured JSON
- [Relaystation Place Search](https://www.zero.xyz/c/relaystation-place-search-b81c8080/llms.txt): $0.01/call via x402. Free-text search for places and points of interest, returning names, addresses, and coordinates as JSON
- [RelayStation Ask Document](https://www.zero.xyz/c/relaystation-ask-document-b34ba562/llms.txt): $0.08/call via x402. Ask natural-language questions against a document (PDF, image, etc.) and receive grounded, extracted answers using AWS Textract Queries — no OCR pipeline required.
- [Relaystation Data Validate](https://www.zero.xyz/c/relaystation-data-validate-f0955c4c/llms.txt): $0.01/call via x402. Validates rows in a CSV or structured file against a user-defined JSON schema, returning row-level validation errors as JSON
- [RelayStation EXIF Strip](https://www.zero.xyz/c/relaystation-exif-strip-4ffdc6c0/llms.txt): $0.01/call via x402. Strips EXIF and metadata from images for privacy while auto-orienting photos to preserve upright orientation
- [Relaystation SQL-Large](https://www.zero.xyz/c/relaystation-sql-large-cdd0147b/llms.txt): $0.01/call via x402. Run SELECT SQL queries over large uploaded datasets (CSV/JSON), paying only per byte scanned at $0.01 per 100 MB
- [RelayStation Chart Generator](https://www.zero.xyz/c/relaystation-chart-generator-c722cd79/llms.txt): $0.01/call via x402. Renders bar, line, or pie charts from JSON data and returns a report-ready PNG image in a single API call.
- [Relaystation Dominant Color Extractor](https://www.zero.xyz/c/relaystation-dominant-color-extractor-86e74c1c/llms.txt): $0.01/call via x402. Extracts the dominant color of an image and returns it as a hex code and RGB values for use in theming and palette generation.
- [RelayStation Table Join](https://www.zero.xyz/c/relaystation-table-join-8793f2a5/llms.txt): $0.01/call via x402. Joins two in-memory tables by key using inner, left, right, or outer join semantics, priced per MB of input data
- [Relaystation Sanctions & PEP Screening](https://www.zero.xyz/c/relaystation-sanctions-pep-screening-646abfa4/llms.txt): $0.01/call via x402. Screens a name against OFAC, EU, UK, and UN sanctions lists plus Wikidata-derived PEP watchlists with fuzzy matching, returning an instant JSON verdict.
- [RelayStation HTML Sanitizer](https://www.zero.xyz/c/relaystation-html-sanitizer-8ce5831a/llms.txt): $0.01/call via x402. Sanitizes HTML against a safe whitelist by stripping scripts, event handlers, and XSS vectors before embedding user-generated content
- [RelayStation Readability Extractor](https://www.zero.xyz/c/relaystation-readability-extractor-68118849/llms.txt): $0.01/call via x402. Extracts clean article text — title, byline, and body — from any public URL, stripping boilerplate and navigation clutter.
- [RelayStation Celebrity Detection](https://www.zero.xyz/c/relaystation-celebrity-detection-fe314ca4/llms.txt): $0.01/call via x402. Recognizes celebrities in an image and returns their names with confidence scores using AWS Rekognition
- [Relaystation Baton — Durable Agent Storage Object](https://www.zero.xyz/c/relaystation-baton-durable-agent-storage-object-ae465beb/llms.txt): $0.01/call via x402. Creates a named, versioned, cryptographically-provable storage object (baton) that agents can write to, read from, append, and hand off to other agents or people
- [RelayStation Image Composite](https://www.zero.xyz/c/relaystation-image-composite-a22135ae/llms.txt): $0.01/call via x402. Overlays or watermarks one image onto another with configurable position and blend control
- [Relaystation Document Format Converter](https://www.zero.xyz/c/relaystation-document-format-converter-b197bce0/llms.txt): $0.01/call via x402. Converts documents between markdown, HTML, docx, odt, rtf, epub, LaTeX, and rst formats using pandoc, with citation support
- [Relaystation Identicon Generator](https://www.zero.xyz/c/relaystation-identicon-generator-f253056a/llms.txt): $0.01/call via x402. Generates a deterministic GitHub-style identicon PNG from any seed string, producing a stable avatar for users or agents
- [Relaystation HMAC Compute](https://www.zero.xyz/c/relaystation-hmac-compute-e48ece10/llms.txt): $0.01/call via x402. Computes a keyed HMAC digest (SHA-256, SHA-512, SHA-1, or MD5) from a secret key and data payload, without logging the key.
- [RelayStation Audio Loudness Normalizer (EBU R128)](https://www.zero.xyz/c/relaystation-audio-loudness-normalizer-ebu-r128-019e59e5/llms.txt): $0.01/call via x402. Normalizes audio file loudness to broadcast-standard EBU R128 targets, adjusting integrated loudness (LUFS), true-peak, and loudness range (LRA).
- [Relaystation HTML to PDF](https://www.zero.xyz/c/relaystation-html-to-pdf-f736edd9/llms.txt): $0.01/call via x402. Renders an HTML document to a print-quality PDF using sandboxed headless Chromium
- [Relaystation eSign Document](https://www.zero.xyz/c/relaystation-esign-document-16bd3658/llms.txt): $0.05/call via x402. Send a PDF, Word doc, or Markdown file for legally binding e-signature with hosted signing links, ordered multi-signer routing, approvers, templates, and live status tracking.
- [RelayStation Office Rescue — Legacy/Exotic Office to PDF](https://www.zero.xyz/c/relaystation-office-rescue-legacy-exotic-office-to-pdf-c09d4c59/llms.txt): $0.01/call via x402. Converts legacy, exotic, or damaged Office files (doc, xls, ppt, odt, etc.) to PDF using LibreOffice, handling formats that modern Office applications refuse to open
- [Relaystation PDF OCR](https://www.zero.xyz/c/relaystation-pdf-ocr-93cbf6b8/llms.txt): $0.01/call via x402. Extracts text from scanned PDF pages using Tesseract OCR, making paper documents machine-readable and searchable.
- [RelayStation PPE Detection](https://www.zero.xyz/c/relaystation-ppe-detection-1029b818/llms.txt): $0.01/call via x402. Detects personal protective equipment (face covers, hand covers, head covers) worn by people in an image, returning labeled findings with confidence scores.
- [RelayStation Subtitle Burn (libass)](https://www.zero.xyz/c/relaystation-subtitle-burn-libass-3ac9a5c3/llms.txt): $0.01/call via x402. Permanently burns styled subtitle/caption tracks into a video file using libass, so captions are hardcoded into every copy of the video.
- [RelayStation JWT Verify](https://www.zero.xyz/c/relaystation-jwt-verify-daf16de7/llms.txt): $0.01/call via x402. Verifies a JWT signature with algorithm pinning, blocking alg:none and algorithm confusion attacks, without logging the key.
- [RelayStation Data to XLSX Converter](https://www.zero.xyz/c/relaystation-data-to-xlsx-converter-892dbed7/llms.txt): $0.01/call via x402. Converts tabular data into styled, multi-sheet Excel (.xlsx) files with formula-injection protection
- [Relaystation Apply Patch](https://www.zero.xyz/c/relaystation-apply-patch-b0c3d6b2/llms.txt): $0.01/call via x402. Applies a unified diff (patch) to a source string, returning the patched result or a 422 error on context mismatch — never a silent bad merge.
- [RelayStation Vision Detect Labels](https://www.zero.xyz/c/relaystation-vision-detect-labels-a6f97a55/llms.txt): $0.01/call via x402. Detects objects, scenes, and concepts in an image using AWS Rekognition, returning labels with confidence scores
- [RelayStation CSV/TSV/JSON/NDJSON Format Converter](https://www.zero.xyz/c/relaystation-csv-tsv-json-ndjson-format-converter-bdcfce09/llms.txt): $0.01/call via x402. Converts tabular data between CSV, TSV, JSON, and NDJSON formats while preserving structure, billed per MB.
- [RelayStation PDF Merge](https://www.zero.xyz/c/relaystation-pdf-merge-b46b07bb/llms.txt): $0.01/call via x402. Combines multiple PDF files into a single PDF in a user-specified order, billed at $0.001 per page
- [Relaystation Video Frame Extractor](https://www.zero.xyz/c/relaystation-video-frame-extractor-9a62c84a/llms.txt): $0.01/call via x402. Extracts N evenly-sampled frames from a video and returns a manifest of presigned image links
- [Relaystation Image Content Moderation](https://www.zero.xyz/c/relaystation-image-content-moderation-93326218/llms.txt): $0.01/call via x402. Analyzes an image URL and flags unsafe or inappropriate content using AWS Rekognition, returning moderation categories with confidence scores
- [Relaystation PDF Image Extractor](https://www.zero.xyz/c/relaystation-pdf-image-extractor-d9082283/llms.txt): $0.01/call via x402. Extracts all embedded images from a PDF file and returns them as PNG files, billed at $0.001 per page.
- [RelayStation Office-to-PDF Converter](https://www.zero.xyz/c/relaystation-office-to-pdf-converter-704360f7/llms.txt): $0.01/call via x402. Converts Word (.docx/.doc), Excel (.xlsx/.xls), or PowerPoint (.pptx/.ppt) files to PDF using LibreOffice, preserving layout.
- [Relaystation PDF Diff](https://www.zero.xyz/c/relaystation-pdf-diff-69e1afca/llms.txt): $0.01/call via x402. Compares two PDF documents and returns a unified diff highlighting every textual change between versions
- [RelayStation Media Trim](https://www.zero.xyz/c/relaystation-media-trim-eac73773/llms.txt): $0.01/call via x402. Cuts a specified time range from an audio or video file using fast stream-copy, preserving original codecs with no quality loss.
- [Relaystation Document Form Extraction (Textract Forms)](https://www.zero.xyz/c/relaystation-document-form-extraction-textract-forms-ba2a9aed/llms.txt): $0.28/call via x402. Extracts form fields as structured key→value pairs from scanned or digital documents using AWS Textract Forms, returning clean JSON without requiring a template.
- [Relaystation OCR Layout](https://www.zero.xyz/c/relaystation-ocr-layout-da0430

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