/** Applicability helpers for pxpipe's production-safe model scope. */
export type PxpipeApplicabilityReason = 'eligible' | 'unsupported_model' | 'unsupported_method' | 'unsupported_path' | 'empty_body';
export interface PxpipeApplicabilityInput {
    readonly model?: string | null;
    readonly method?: string | null;
    readonly path?: string | null;
    readonly bodyBytes?: number | null;
}
/** Built-in default scope when PXPIPE_MODELS is unset: Fable 5, Gemini 3.6 Flash, and Gemini 3.7 Flash.
 *  Everything else is opt-in via dashboard chips or PXPIPE_MODELS:
 *  - Opus 4.7/4.8 — worse at reading imaged content (FINDINGS.md 2026-06-16:
 *    Opus 4.8 ~2pp arithmetic, 6/15 dense-hex vs Fable 100/100).
 *  - GPT 5.5 — degrades on imaged history/context.
 *  - GPT 5.6 Sol — 98/100 production arithmetic, but 79/93 completed gist,
 *    4/15 completed guard confabulations, and 0/15 dense hex.
 *  - Grok 4.5 — native 14px: 100/100 arithmetic, 97/98 gist, 17/18 state; hex 0/15.
 *  - Opus 5 — 2/15 exact recall on imaged context (DeepSWE v1.1 eval);
 *    task pass rate holds but dense recall does not.
 *  All remain available for explicit opt-in.
 *  Silently imaging weak or unvalidated readers is the wrong default. */
/** Model bases imaged with no configuration at all.
 *
 *  Exported so documentation can be checked against it instead of restating it.
 *  The README and this list disagreed once already: Opus 5 was dropped here after
 *  a measured recall regression and stayed in the README's stated default, so a
 *  reader following the docs believed a model was being imaged that was not. */
export declare const DEFAULT_MODEL_BASES: string[];
/** Current effective allowed-model scope (Claude + GPT). */
export declare function getAllowedModelBases(): string[];
/** PXPIPE_MODELS env / default scope, independent of runtime override.
 *  Dashboard unions this into its chip set so env-enabled models are always shown as toggles. */
export declare function getConfiguredModelBases(): string[];
/** Set the dashboard runtime override. Empty array = compress nothing; null = clear override. Not persisted. */
export declare function setAllowedModelBases(list: readonly string[] | null): void;
/** True when pxpipe may transform this Anthropic model. */
export declare function isPxpipeSupportedModel(model: string | null | undefined): boolean;
/** True when pxpipe may transform this GPT model. Shares the single PXPIPE_MODELS scope. */
export declare function isPxpipeSupportedGptModel(model: string | null | undefined): boolean;
/** Canonical set of Anthropic Messages routes pxpipe transforms. Shared with
 *  createProxy (src/core/proxy.ts) so the public applicability helper and the
 *  proxy router can never disagree on which paths are eligible — they did: the
 *  proxy accepts /anthropic/messages, but the helper's old `endsWith` check
 *  rejected it (and would have wrongly accepted /foo/v1/messages). Exact matches
 *  only, so /v1/messages/count_tokens stays unsupported. */
export declare function isAnthropicMessagesPath(pathname: string): boolean;
export declare function shouldTransformAnthropicMessages(input: PxpipeApplicabilityInput): {
    eligible: boolean;
    reason: PxpipeApplicabilityReason;
};
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