char_info
Unicode code point, block, category
How to use it
char_info is exposed by the Calc MCP MCP server. Add the server to your MCP client (Claude Desktop, Cursor, Windsurf and others), and the char_info tool becomes available to the model automatically. See the full listing for setup details and every tool this server provides.
Install Calc MCP
claude mcp add -s user calc-mcp -- npx -y @coo-quack/calc-mcp@2.1.0Other tools in Calc MCP (20)
Number base conversion (2–36)
Encode / decode
HEX ↔ RGB ↔ HSL (alpha channel supported)
8 categories, 146 unit names: length, weight, temperature, area (tsubo, tatami), volume, speed, data, time
Characters (grapheme-aware), words, lines, bytes
Human-readable cron + next runs (weekday/month names supported)
Diff, add/subtract, weekday, wareki
Current time, timezone conversion, UNIX timestamps
Line diff, Levenshtein distance
URL, HTML entity, Unicode escape
Validate JSON, CSV, XML, YAML
MD5, SHA-1, SHA-256, SHA-512, CRC32, HMAC
IPv4/IPv6 info, CIDR contains check, range calculation
Decode header + payload (no verification)
Validate / generate check digits
Evaluate expressions, statistics
UUID v4/v7, ULID, passwords (readable, custom charset), random number, shuffle
Test, match, matchAll, replace
Compare, validate, parse, range satisfaction
Protocol, host, path, params, hash