Sha256LLMRequestHash class

Default SHA-256 based implementation. Hashes the JSON-encoded (messages, tools, modelConfig, jsonOutput, trialSalt) tuple. Tool.executable closures are ignored (they're not in toJson).

Default-stripped keys: timestamp is always stripped from message JSON before hashing. UserMessage / ModelMessage / FunctionExecutionResultMessage all carry DateTime.now()-derived timestamps for tracing purposes, but those values are never semantically part of the LLM request — including them would make every hash unique per process invocation and defeat the cache.

Implemented types

• LLMRequestHash

Constructors

Sha256LLMRequestHash({Set<String> stripMessageKeys = const {}})

const

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

stripMessageKeys → Set<String>

Additional message-level keys to strip before hashing. timestamp is always stripped — see class docstring. Pass extra keys here when the application embeds non-deterministic fields in messages (e.g. trace ids inside system reminders).

final

Methods

compute({required List<LLMMessage> messages, required List<Tool>? tools, required ModelConfig modelConfig, bool? jsonOutput, String? trialSalt}) → String

Compute the hash for a request.

override

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited