# Braille From Dots

> Braille From Dots is a paid API for AI agents from braille.openverbs.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-14).

Constructs Unicode braille cells from arrays of raised-dot numbers (1–8) per cell, validating dot ranges and uniqueness.

## Facts

- Endpoint: POST https://braille.openverbs.com/v1/from-dots
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/braille-from-dots-50b21058
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_hm12a7pu7WX1MfMUYOUjj

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

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability braille-from-dots-50b21058 -d '<json body>'
```

Example prompt: Build me braille cells from these dot patterns: cell one uses dots 1, 2, and 5, and cell two uses dots 1 and 5.

## When to prefer this

Use this endpoint when you have explicit dot-position arrays and need to produce braille cell characters programmatically — ideal when the input is already in dot-number format (e.g. from a sensor, database, or user-specified layout) rather than plain text. For converting plain English text to braille, prefer the text-to-braille sibling endpoint instead.

## Known failure modes

- Dot number out of range (not 1–8) → 400 error
- Repeated dot numbers within a single cell → 400 error
- Empty cells array (minItems:1 violated) → 400 error
- Malformed JSON body → 400 error
- Non-integer dot values → 400 error

## How this service works

Build braille cells from raised-dot numbers (each cell an array of 1–8). Out-of-range or repeated dots are clean 400s.

## Output

Returns an array of Unicode braille characters or a combined braille string corresponding to each input cell's dot configuration. Invalid dot numbers (outside 1–8) or repeated dots within a cell result in a clean 400 error response.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object",
     "required": [
      "cells"
     ],
     "properties": {
      "cells": {
       "type": "array",
       "items": {
        "type": "array",
        "items": {
         "type": "integer",
         "maximum": 8,
         "minimum": 1
        }
       },
       "minItems": 1,
       "description": "Array of cells; each cell is an array of dot numbers (1–8), e.g. [[1,2,5],[1,5]]."
      }
     },
     "additionalProperties": false
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/braille-from-dots-50b21058/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from braille.openverbs.com](https://www.zero.xyz/host/braille.openverbs.com/llms.txt)