# saastemly APIs > Hosted pay-per-call APIs and MCP servers for developers and AI agents. Every tool has free calls each day (send X-Free-Call: 1; MCP clients without a key get them automatically). Then x402 (USDC) per call, or prepaid credits by card from $5. Each API serves /llms.txt, /openapi.json, /.well-known/x402 and an MCP server at /mcp. 8 APIs are listed. Machine-readable list: https://apis.saastemly.com/mcp-servers.json ## APIs - [apidx UUID Generator](https://uuid-forge.saastemly.com/llms.txt): Random UUID v4 (RFC 9562) as an HTTP API: 1-100 UUIDs per call, in uuid, URN, hex or integer form. An alternative to the X Pay UUID listing on x402 Bazaar. (from $0.0017 per call) MCP: https://uuid-forge.saastemly.com/mcp - [Crawl4Agent](https://crawl4agent.saastemly.com/llms.txt): crawl4ai-compatible web crawler API: POST a URL, get clean LLM-ready Markdown with fit_markdown pruning. No Python, no keys, x402 per call. ($0.008 per call) MCP: https://crawl4agent.saastemly.com/mcp - [LensaOCR](https://lensaocr.saastemly.com/llms.txt): Tesseract-compatible OCR over HTTP: send an image, get its text and word boxes in Tesseract's txt, TSV, hOCR and ALTO formats. ($0.005 per call) MCP: https://lensaocr.saastemly.com/mcp - [Mem0 Cloud](https://mem0-cloud.saastemly.com/llms.txt): A hosted agent-memory API shaped like mem0's REST API (an alternative to running mem0 yourself): add conversations, search, list, get and delete memories. No vector database or LLM to run. Memories are private to the secret memory_key you send; kept 365 days. (from $0.002 per call) MCP: https://mem0-cloud.saastemly.com/mcp - [Puptra PDF Snapshot](https://puptra-pdf-snapshot.saastemly.com/llms.txt): One-call URL-to-PDF and full-page screenshot API with Puppeteer's page.pdf()/page.screenshot() semantics — an alternative to running puppeteer yourself or the Browserless PDF API, without any headless-browser infrastructure. (from $0.005 per call) MCP: https://puptra-pdf-snapshot.saastemly.com/mcp - [Sandboxd Code Run](https://sandboxd-code-run.saastemly.com/llms.txt): Hosted one-shot code execution: send a snippet plus optional files, get stdout, stderr, exit code and artifacts back. Daytona execute-code compatible; no daemon to keep warm, priced per run. (from $0.002 per call) MCP: https://sandboxd-code-run.saastemly.com/mcp - [Supervision Draw](https://supervision-draw.saastemly.com/llms.txt): Draw detections onto an image with Roboflow supervision's own annotators, over HTTP and MCP. Send a base64 image and detections (boxes in xyxy pixels, optional class_id, confidence, label, polygon) and get back the annotated image plus per-class counts. Annotators: box, round_box, box_corner, circle, dot, ellipse, triangle, label, color, mask, polygon, halo, background_overlay, blur, pixelate, percentage_bar, chained in order. A hosted alternative to installing Python and supervision just to render detection results. ($0.003 per call) MCP: https://supervision-draw.saastemly.com/mcp - [VisionFlow Match](https://visionflow-match.saastemly.com/llms.txt): Hosted OpenCV for finding a pattern image inside a larger image: template matching, ORB/SIFT feature matching and RANSAC homography, over HTTP and MCP. Gives automation agents pixel boxes, corners and confidence for UI elements, logos and objects in screenshots. A hosted alternative to running OpenCV (opencv/opencv) yourself. (from $0.003 per call) MCP: https://visionflow-match.saastemly.com/mcp ## Topics - [Image annotation API](https://apis.saastemly.com/tags/annotation): Supervision Draw - [Code execution API](https://apis.saastemly.com/tags/code): Sandboxd Code Run - [Computer vision API](https://apis.saastemly.com/tags/computer-vision): Supervision Draw, VisionFlow Match - [Web crawler API](https://apis.saastemly.com/tags/crawler): Crawl4Agent - [Headless browser API](https://apis.saastemly.com/tags/headless-browser): Puptra PDF Snapshot - [Homography API](https://apis.saastemly.com/tags/homography): VisionFlow Match - [Web page to Markdown API](https://apis.saastemly.com/tags/markdown): Crawl4Agent - [mem0-compatible memory API](https://apis.saastemly.com/tags/mem0): Mem0 Cloud - [Agent memory API](https://apis.saastemly.com/tags/memory): Mem0 Cloud - [Object detection visualization API](https://apis.saastemly.com/tags/object-detection): Supervision Draw - [OCR API](https://apis.saastemly.com/tags/ocr): LensaOCR - [OpenCV API](https://apis.saastemly.com/tags/opencv): VisionFlow Match - [HTML to PDF API](https://apis.saastemly.com/tags/pdf): Puptra PDF Snapshot - [Puppeteer API](https://apis.saastemly.com/tags/puppeteer): Puptra PDF Snapshot - [RAG memory API](https://apis.saastemly.com/tags/rag): Mem0 Cloud - [Code execution sandbox API](https://apis.saastemly.com/tags/sandbox): Sandboxd Code Run - [Web scraping API](https://apis.saastemly.com/tags/scraping): Crawl4Agent - [Website screenshot API](https://apis.saastemly.com/tags/screenshot): Puptra PDF Snapshot, VisionFlow Match - [Supervision annotators API](https://apis.saastemly.com/tags/supervision): Supervision Draw - [Template matching API](https://apis.saastemly.com/tags/template-matching): VisionFlow Match - [Tesseract OCR API](https://apis.saastemly.com/tags/tesseract): LensaOCR - [Text recognition API](https://apis.saastemly.com/tags/text-recognition): LensaOCR - [UUID generator API](https://apis.saastemly.com/tags/uuid): apidx UUID Generator ## Optional - [Catalog home](https://apis.saastemly.com/) - [mcp-servers.json](https://apis.saastemly.com/mcp-servers.json)