| Id Ulid API Call when an agent needs whether a string is a valid ulid. No network. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/id-ulid first. |  syntexa.ch | - | $0.01 | listed |
| Id Uuid API Call when an agent needs whether a string is a valid uuid. No network. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/id-uuid first. | syntexa.ch | - | $0.003 | listed |
| Id Uuid Nil API Call when an agent needs whether a string is a valid uuid-nil. No network. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/id-uuid-nil first. | syntexa.ch | - | $0.009 | listed |
| Id Uuid V1 API Call when an agent needs whether a string is a valid uuid-v1. No network. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/id-uuid-v1 first. | syntexa.ch | - | $0.004 | listed |
| Id Uuid V3 API Call when an agent needs whether a string is a valid uuid-v3. No network. Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/id-uuid-v3 first. | syntexa.ch | - | $0.005 | listed |
| Id Uuid V4 API Call when an agent needs whether a string is a valid uuid-v4. No network. Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/id-uuid-v4 first. | syntexa.ch | - | $0.006 | listed |
| Id Uuid V5 API Call when an agent needs whether a string is a valid uuid-v5. No network. Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/id-uuid-v5 first. | syntexa.ch | - | $0.007 | listed |
| Id Uuid V7 API Call when an agent needs whether a string is a valid uuid-v7. No network. Exact $0.008 USDC. Prefer unpaid POST /v1/sandbox/id-uuid-v7 first. | syntexa.ch | - | $0.008 | listed |
| Idempotency Replay Guard Detect safe replays and conflicting reuse of an idempotency key |  phion.systems | - | $0.002 | listed |
| Identify a Bitcoin output script Identify a Bitcoin output script — Genesis402 / UnyKorn Operator Network |  unykorn.org | - | $0.002 | listed |
| Identify the type and country of a company registration number. Detects Swedish org numbers, Finnish business IDs, German HRB numbers, LEIs, DUNS, and 20+ other formats. Pure algorithmic. Identify the type and country of a company registration number. Detects Swedish org numbers, Finnish business IDs, German HRB numbers, LEIs, DUNS, and 20+ other formats. Pure algorithmic. |  strale.io | - | $0.054 | listed |
| Iframe API Prüft am Objekt iframe den Befund Zahl geladener Ressourcen. |  halowerk.com | - | $0.001 | listed |
| Iframe API Prüft am Objekt iframe den Befund Zeit bis zum ersten Byte. | halowerk.com | - | $0.001 | listed |
| Iframe API Prüft am Objekt iframe den Befund Zieldomain der Übermittlung. | halowerk.com | - | $0.001 | listed |
| Iframe API Prüft am Objekt iframe den Befund Zahl renderblockierender Ressourcen. | halowerk.com | - | $0.001 | listed |
| Iframe API Prüft am Objekt iframe den Befund übertragene Bytemenge. | halowerk.com | - | $0.001 | listed |
| Iframe API Prüft am Objekt iframe den Befund Verbindungsaufbauzeit. | halowerk.com | - | $0.001 | listed |
| Iframe API Prüft am Objekt iframe den Befund Zahl enthaltener Formulare. | halowerk.com | - | $0.001 | listed |
| Iframe API Prüft am Objekt iframe den Befund verwendete Formularmethode. | halowerk.com | - | $0.001 | listed |
| Iframe API Prüft am Objekt iframe den Befund Zeit bis zum sichtbaren Renderstart. | halowerk.com | - | $0.001 | listed |
| Iframe API Prüft am Objekt iframe den Befund Anteil moderner Bildformate. | halowerk.com | - | $0.001 | listed |
| Ikebana Sogetsu API Ikebana — Sogetsu School — Space arrangement philosophy for negative space appreciation and minimalist composition. |  substratesymposium.com | - | $0.01 | listed |
| Il Capital Gains API Israel capital gains tax estimator for listed securities (25% real gain plus surtax). Estimate only, not tax advice. |  workers.dev | - | $0.02 | listed |
| Illustrated Periodicals API Free public-domain books on "Illustrated periodicals": browse the catalogue's works tagged with that Library of Congress subject (226 in Project Gutenberg alone, plus Internet Archive scans), ranked by relevance and popularity, with direct epub/txt/html download links. Add words to narrow by title or author. Re-verified daily. $0.01 per page of 20. |  rallylive.ca | - | $0.01 | listed |
| Image Alt Text Generator Alt text for images, for web accessibility (WCAG 1.1.1, BFSG, European Accessibility Act) and SEO: send image_url or image_base64, get alt text under 125 characters that describes purpose and content, a longer description for complex images such as charts, whether the image is decorative (then alt=""), all readable text in the image, and a ready alt="..." attribute. Optional language (e.g. German) and context (where the image is used). |  agentsvc.io | - | $0.005 | listed |
| Image Description API Image description API: detailed natural-language description of any image URL — subjects, setting, actions, visible text — from our locally-hosted vision engine. Use for image understanding, content cataloging, moderation pre-screening, and vision-blind agent workflows. Images processed in memory, never stored. |  forgemesh.io | - | $0.01 | listed |
| Image EXIF Extract EXIF metadata from an image (camera make/model, timestamps, exposure, orientation, GPS). Send a public image URL or a base64 image; JPEG, PNG (eXIf chunk), and TIFF carry EXIF. Stripped images return an empty exif object, not an error. |  agent402.tools | - | $0.003 | listed |
| Image Generation API Paid x402 endpoint for generating images from text prompts. |  mm.family | - | $0.003473 | listed |
| Image Generation API Paid x402 endpoint for generating images from text prompts. | mm.family | - | $0.003473 | listed |
| Image Generation API Paid x402 endpoint for generating images from text prompts. | mm.family | - | $0.003473 | listed |
| Image Generation API Paid x402 endpoint for generating images from text prompts. | mm.family | - | $0.003473 | listed |
| Image Generation API Paid x402 endpoint for generating images from text prompts. | mm.family | - | $0.003016 | listed |
| Image Generation API Paid x402 endpoint for generating images from text prompts. |  zeroclick.io | - | $0.01 | listed |
| Image Generation API Paid x402 endpoint for generating images from text prompts. | zeroclick.io | - | $0.01 | listed |
| Image Generation API Paid x402 endpoint for generating images from text prompts. |  gondola-ai.com | - | $0.01 | listed |
| Image Generation API Paid x402 endpoint for generating images from text prompts. | zeroclick.io | - | $0.01 | listed |
| Image Generation API Paid x402 endpoint for generating images from text prompts. | mm.family | - | $0.00559 | listed |
| Image Generation API Paid x402 endpoint for generating images from text prompts. | zeroclick.io | - | $0.01 | listed |
| Image Generation API Paid x402 endpoint for generating images from text prompts. | zeroclick.io | - | $0.01 | listed |
| Image Generation API Paid x402 endpoint for generating images from text prompts. | zeroclick.io | - | $0.01 | listed |
| Image Generation API Paid x402 endpoint for generating images from text prompts. | zeroclick.io | - | $0.01 | listed |
| Image Generation API Paid x402 endpoint for generating images from text prompts. |  agentutility.ai | - | $0.01 | listed |
| Image Generation API Paid x402 endpoint for generating images from text prompts. |  onrender.com | - | $0.01 | listed |
| Image Generation API Paid x402 endpoint for generating images from text prompts. | zeroclick.io | - | $0.01 | listed |
| Image Generation API Paid x402 endpoint for generating images from text prompts. | zeroclick.io | - | $0.01 | listed |
| Image Generation API Paid x402 endpoint for generating images from text prompts. | zeroclick.io | - | $0.01 | listed |
| Image Generation API Paid x402 endpoint for generating images from text prompts. | zeroclick.io | - | $0.01 | listed |
| Image Generation API Paid x402 endpoint for generating images from text prompts. | zeroclick.io | - | $0.01 | listed |
| Image Generation API Paid x402 endpoint for generating images from text prompts. | zeroclick.io | - | $0.01 | listed |
| Image Generation API Paid x402 endpoint for generating images from text prompts. | zeroclick.io | - | $0.01 | listed |