/**
 * The dialect a wire speaks, and how to say the same schema in it.
 *
 * A tool has one Zod schema. What changes between providers is not the tool —
 * it is the JSON Schema dialect the wire parses, which is a property of the
 * wire. So the shape is rendered once, canonically, and each driver converts
 * at the boundary where it knows which wire it is about to talk to.
 *
 * This exists because that layering was missing and it cost a production
 * outage. `renderToolSchema` emits draft-07 (zod-to-json-schema's
 * `jsonSchema7` target), every driver forwarded it verbatim, and one of the
 * wires namzu speaks requires draft 2020-12. Measured against that live
 * endpoint:
 *
 * | tool schema                    | result                                  |
 * |--------------------------------|-----------------------------------------|
 * | `items: [a, b]`   (draft-07)   | 400 — "must match JSON Schema draft 2020-12" |
 * | `prefixItems: [a, b]` (2020-12)| accepted                                |
 * | `items: { a }`                 | accepted                                |
 *
 * The failure is NOT about strict tool use. It fires with strict validation
 * unset, and with it on the dialect error arrives *before* the strict-subset
 * error — so a guard scoped to strict misses it entirely. One was, and did.
 *
 * Which wires want which dialect is the drivers' knowledge, not this file's:
 * the vocabulary lives beside the wire that speaks it, and only the mechanism
 * lives here.
 *
 * Only the conversions namzu can actually emit are implemented. The renderer
 * runs with `$refStrategy: 'none'`, so there are no `$ref`/`definitions` to
 * rewrite; a construct that cannot appear is not worth code that cannot be
 * tested.
 */
/** Which spelling of JSON Schema a wire accepts. */
export type JsonSchemaDialect = 'draft-07' | '2020-12';
/**
 * Say this schema in the dialect the wire parses.
 *
 * Returns the input unchanged — same reference — when nothing needs saying
 * differently, so the common case costs one map lookup and no allocation.
 */
export declare function toSchemaDialect(schema: Record<string, unknown>, dialect: JsonSchemaDialect): Record<string, unknown>;
/**
 * Whether a schema still carries a construct the 2020-12 wire refuses.
 *
 * Exported so a test can sweep every shipped tool without reaching into the
 * conversion, and so a driver can assert rather than hope.
 */
export declare function findDraft07Only(schema: unknown, path?: string): string[];
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