@focusmcp/validate

Validate data — JSON syntax, JSON Schema compliance, TypeScript type checking, lint rules.

Tools

| Tool | Exposed as | Description | |------|-----------|-------------| | json | val_json | Validate JSON syntax — check if a string is valid JSON, report errors | | schema | val_schema | Validate data against a JSON Schema (type, required, properties, items) | | types | val_types | Check TypeScript type annotations — find any, missing return types, implicit any | | lint | val_lint | Apply lint rules — unused imports, console.log, TODO/FIXME, debugger statements |

JSON Schema subset

The schema tool supports the following JSON Schema keywords:

• type — scalar or array of types: string, number, integer, boolean, object, array, null
• required — array of required property names (object only)
• properties — map of property name to sub-schema (object only)
• items — sub-schema applied to every array element (array only)

No external dependencies — validation is implemented as a pure recursive function.

TypeScript type analysis

The types tool performs static regex-based analysis (no compiler invoked):

| Issue type | What is detected | |-----------|-----------------| | explicit-any | : any annotation on any token | | missing-return-type | function declaration without : ReturnType after the closing param paren | | implicit-any | Function parameters without : Type annotation |

A score (0–100) is returned: starts at 100, minus 10 per issue, floored at 0.

Lint rules

| Rule | What is flagged | |------|----------------| | unused-import | Named import never referenced outside its import line | | no-console-log | console.log(...) call | | no-debugger | debugger statement | | todo-fixme | TODO or FIXME comment marker |