# Unicode Block Lookup

> Unicode Block Lookup is a paid API for AI agents from unicode.openverbs.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-14).

Returns information about a Unicode block by its name (e.g. 'Basic Latin', 'Emoticons')

## Facts

- Endpoint: POST https://unicode.openverbs.com/v1/block
- 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/unicode-block-lookup-8c72ce9d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_0ewkdJSQAbNenzl2fiDgy

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 unicode-block-lookup-8c72ce9d -d '<json body>'
```

Example prompt: Can you look up the Unicode block named 'Emoticons' and tell me what code points it covers?

## When to prefer this

Use this endpoint when you need programmatic, structured access to Unicode block metadata by name — especially useful for developers building text processing tools, font utilities, or internationalization pipelines who need to resolve a block name to its code point range without parsing the Unicode specification manually.

## Known failure modes

- Unknown or misspelled block name returns an error or empty result
- Case-sensitive block name mismatch may cause lookup failure
- Blocks from very recent Unicode versions may not be supported
- Malformed request body (missing 'block' field) returns a validation error

## How this service works

Resolve a Unicode block name (loose matching) to its range, size, count of assigned characters and a small sample. An unknown block is a successful `found:false`. This is a Unicode Character Database block — not a blockchain block.

## Output

Returns metadata about the requested Unicode block, including its name, code point range (start and end), and any other block-level properties defined in the Unicode standard.

## 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": [
      "block"
     ],
     "properties": {
      "block": {
       "type": "string",
       "description": "Unicode block name, e.g. 'Basic Latin' or 'Emoticons'."
      }
     },
     "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/unicode-block-lookup-8c72ce9d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from unicode.openverbs.com](https://www.zero.xyz/host/unicode.openverbs.com/llms.txt)