/**
 * A deliberately tiny JSON Schema validator — just the subset used by
 * schemas/openlore-manifest-v1.json. Avoids pulling in Ajv (a large dep) for a
 * single internal schema, per spec-05's acceptance criteria.
 *
 * It is no longer single-purpose: `tool-guard.ts` runs every inbound MCP tool
 * call's arguments through it on BOTH transports, and those arguments come from a
 * model that may be under an attacker's influence. A keyword this file ignores is
 * therefore a bound the whole tool surface only *advertises* — a `maxLength: 4096`
 * that nothing enforces. So the size/shape keywords the tool schemas actually
 * declare are implemented here, and `SUPPORTED_SCHEMA_KEYWORDS` is exported so a
 * CI guard can fail the build if a schema ever declares one this file does not
 * enforce (see schema-validator.test.ts).
 *
 * Supported keywords: type (string or array incl. "null"), const, enum,
 * required, dependentRequired, properties, additionalProperties (false, or a
 * subschema applied to the remaining properties), items, oneOf, minLength,
 * maxLength, minimum, maximum, minItems, maxItems, maxProperties. The
 * `integer` type is distinguished from `number`.
 */
export interface ValidationError {
    path: string;
    message: string;
}
type JsonSchema = Record<string, unknown>;
/**
 * Every keyword `validateNode` acts on, plus the pure annotations it may safely
 * ignore. A keyword absent from BOTH lists is one a schema can declare and this
 * validator will silently drop — which is exactly the failure the CI guard exists
 * to prevent, so keep the lists in step with the code below.
 */
export declare const SUPPORTED_SCHEMA_KEYWORDS: readonly string[];
/** Keywords that carry no constraint: ignoring them enforces nothing away. */
export declare const ANNOTATION_SCHEMA_KEYWORDS: readonly string[];
/** Validate a parsed JSON value against a parsed JSON Schema. */
export declare function validateAgainstSchema(value: unknown, schema: JsonSchema): ValidationError[];
export {};
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