agentutility(7)$ man alt-text-generator
/alt-text-generator
PRICE / CALL
$0.02
USDC · base mainnet · scheme: exact
METHOD
POST
CLUSTER
wordmintCATEGORY
uncategorized
STATUS
● live
NAME
alt-text-generator — turns a public image url into ready-to-use text: concise alt text for screen readers, a natural-language description, ocr text pulled fro…
synonym alias of describe-image — reuses the canonical handler.
SYNOPSIS
POST https://x402.agentutility.ai/alt-text-generator
Content-Type: application/json
X-PAYMENT: <signed-transferWithAuthorization>
{ ... }↳ first call →
402 Payment Required. Sign USDCtransferWithAuthorization, retry with theX-PAYMENT header.DESCRIPTION
Turns a public image URL into ready-to-use text: concise alt text for screen readers, a natural-language description, OCR text pulled from the image, a list of tags, or a one-line social caption. Send image_url plus an optional mode (describe, alt_text, ocr, tags, or caption) and an optional custom prompt to override the instruction; get back text, the mode used, and the model that generated it. Use it as an alt text generator, image captioning API, image-to-text OCR tool, or accessibility description service for photos, screenshots, and graphics.
INPUT — request schema
| property | type | description | req? |
|---|---|---|---|
| image_url | string | URL of the image to analyze. Must be http or https. | required |
| mode | string | Analysis mode: 'describe' (default), 'alt_text', 'ocr', 'tags', or 'caption'. enum: describe · alt_text · ocr · tags · caption | optional |
| prompt | string | Optional. Custom instruction that overrides the mode's default prompt. | optional |
OUTPUT — response shape
| field | type | description |
|---|---|---|
| text | string | — |
| mode | string | — |
EXAMPLES — two ways to call
EXAMPLE 1 · curl
curl -X POST https://x402.agentutility.ai/alt-text-generator \
-H 'Content-Type: application/json' \
-d '{ }'first response =
402 Payment Required with payment requirements; sign + retry with X-PAYMENT.EXAMPLE 2 · mcp
# Install the MCP package for this endpoint's cluster npx -y @agentutility/mcp-<cluster> # Required: EVM private key with USDC on Base export X402_PRIVATE_KEY=0x... # Then call the alt-text-generator tool from your MCP-aware agent.
MCP server handles payment automatically — your coding agent just calls the tool by name.
METADATA
- tags
- wordmintalttextgeneratoralt-text-generator
- methods
- POST
- cluster
- wordmint
- price
- $0.02 USDC per call
ADJACENT — other endpoints in wordmint
| endpoint | description | price |
|---|---|---|
| classify | Sort text into categories you define on the spot, no training run required. | $0.02 |
| classify-text | Sorts a piece of text into categories you define on the fly, no training or fixed label set required. | $0.02 |
| describe-image | Describes images with a vision LLM across five modes: describe, alt_text (accessibility, <=125 chars), OCR (extract visible text), tags (… | $0.02 |
| detect-pii | Detects PII in text: emails, phones, SSNs, credit cards, addresses, names, IPs, and API tokens. | $0.02 |
| email-draft | Writes emails with AI: subject, body, salutation, and sign-off. | $0.02 |
| extract | Pull structured entities out of raw text instead of hand-parsing it yourself. | $0.02 |
| image-describe | Get a vision model's read on an image: a description, alt text, extracted text, tags, or a caption. | $0.02 |
| image-description | Takes a public image URL and returns an AI vision description, alt text, OCR text, tags, or caption depending on mode. | $0.02 |
SEE ALSO