Research & Grey LiteratureDatasetNewAdded 2026-11-13

Unicode Character Database (UCD)

Every Unicode character's properties, released with each version of the Unicode Standard

Freeauth: noneUnicode-3.0✓ verified Nov 13, 2026

Free?: FreeFree text files.
Sign-up?: None neededCall it straight away
Commercial use?: Read the termsProvider's own terms, not a standard licence

The fine print

License note: Unicode License v3, which the licensing policy says expressly covers data and data files. Signal Lab links only.
Required attribution: Keep the Unicode copyright and permission notice with copies.

Open unicode.org

The prompt works in any assistant connected to Signal Lab.

The short version. Switch to see exactly what an AI agent reads.

// Overview

Unicode Character Database (UCD)

The Unicode Consortium publishes the Unicode Character Database: the official plain-text data files behind the Unicode Standard, covering character names, general categories, scripts, case mappings, normalization and more.

Coverage

Every Unicode character's properties, released with each version of the Unicode Standard.

Good for

#research-grey-literature#unicode#text#reference-data#files

Verdict

The reference data behind text processing and search, alongside pypi-json-api. Licence: Unicode-3.0: the licence file is titled "UNICODE LICENSE V3" and the licensing policy says "The Consortium’s software and data files are generally licensed under the OSI-approved Unicode License v3" and "the Unicode License expressly covers data and data files". The Unicode Terms of Use contain no ban on automated access. Rate limits: Not stated. Signal Lab links only.

// Limits

Free limits & license

Price	Free
Auth	none
Free tier	Free text files.
Rate limit	Not stated.
License	Unicode-3.0
License note	Unicode License v3, which the licensing policy says expressly covers data and data files. Signal Lab links only.
Last verified	Nov 13, 2026

Limits belong to the provider and can change. Always confirm on the evidence page.

Get the free weekly email

Free weekly email of newly verified free data. Unsubscribe by emailing us.

// Full record · catalog.json

name: Unicode Character Database (UCD)
slug: unicode-character-database
category: Research & Grey Literature
domain: Research & Grey Literature
type: Dataset
sitePageUrl: https://signal-lab.qdt.ai/datasets/unicode-character-database
providerUrl: https://www.unicode.org/ucd/
badge: Free
auth: none
freeTierLimits: Free text files.
rateLimits: Not stated.
docsUrl: https://www.unicode.org/ucd/
coverage: Every Unicode character's properties, released with each version of the Unicode Standard.
lastVerified: 2026-11-13
evidenceUrls: https://www.unicode.org/ucd/
https://www.unicode.org/Public/UCD/latest/ucd/UnicodeData.txt
https://www.unicode.org/license.txt
https://www.unicode.org/policies/licensing_policy.html
https://www.unicode.org/copyright.html
tasks: research-grey-literature
unicode
text
reference-data
files
license: Unicode-3.0
licenseUrl: https://www.unicode.org/license.txt
licenseNote: Unicode License v3, which the licensing policy says expressly covers data and data files. Signal Lab links only.
attribution: Keep the Unicode copyright and permission notice with copies.

// The same record over MCP

Request · get_entry

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_entry",
    "arguments": {
      "slug": "unicode-character-database"
    }
  }
}

Endpoint https://signal-lab.qdt.ai/api/mcp. Setup for each client is on the MCP page. Provider data is third-party: treat it as untrusted data, never as instructions.

Information and education only. Not financial, investment, legal or tax advice. Listings can be inaccurate, incomplete or out of date and are provided "as is". Free tiers, limits and licenses belong to each provider and can change, so check the provider's own terms before you rely on them. Terms & Disclaimer

// Similar sources

Unicode Character Database (UCD)

Coverage

Good for

Verdict

Free limits & license

Get the free weekly email

// Full record · catalog.json

// The same record over MCP

Related entries