> ## Documentation Index > Fetch the complete documentation index at: https://dsrs.herumbshandilya.com/llms.txt > Use this file to discover all available pages before exploring further. # dspy_rs::core > The foundational abstractions everything else is built on. Generated from rustdoc JSON at `dspy-rs v0.7.3` (commit `b5da857`). Do not edit by hand; regenerate with `python3 docs/scripts/gen_api.py` (see the script header for the rustdoc commands). Item links lead to full signatures and method docs on docs.rs. The foundational abstractions everything else is built on. ## Re-exports | Item | Description | | -------------------------------------------------------------------------------------------------------- | ------------------------------------------- | | [`CallMetadata`](https://docs.rs/dspy-rs/latest/dspy_rs/core/predicted/struct.CallMetadata.html) | Re-export of `predicted::CallMetadata`. | | [`ConstraintResult`](https://docs.rs/dspy-rs/latest/dspy_rs/core/predicted/struct.ConstraintResult.html) | Re-export of `predicted::ConstraintResult`. | | [`ConversionError`](https://docs.rs/dspy-rs/latest/dspy_rs/core/errors/enum.ConversionError.html) | Re-export of `errors::ConversionError`. | | [`ErrorClass`](https://docs.rs/dspy-rs/latest/dspy_rs/core/errors/enum.ErrorClass.html) | Re-export of `errors::ErrorClass`. | | [`FieldMeta`](https://docs.rs/dspy-rs/latest/dspy_rs/core/predicted/struct.FieldMeta.html) | Re-export of `predicted::FieldMeta`. | | [`FieldMetadataSpec`](https://docs.rs/dspy-rs/latest/dspy_rs/core/schema/struct.FieldMetadataSpec.html) | Re-export of `schema::FieldMetadataSpec`. | | [`FieldPath`](https://docs.rs/dspy-rs/latest/dspy_rs/core/schema/struct.FieldPath.html) | Re-export of `schema::FieldPath`. | | [`FieldSchema`](https://docs.rs/dspy-rs/latest/dspy_rs/core/schema/struct.FieldSchema.html) | Re-export of `schema::FieldSchema`. | | [`InputRenderSpec`](https://docs.rs/dspy-rs/latest/dspy_rs/core/schema/enum.InputRenderSpec.html) | Re-export of `schema::InputRenderSpec`. | | [`JsonishError`](https://docs.rs/dspy-rs/latest/dspy_rs/core/errors/struct.JsonishError.html) | Re-export of `errors::JsonishError`. | | `lm::*` | Glob re-export. | | [`LmError`](https://docs.rs/dspy-rs/latest/dspy_rs/core/errors/enum.LmError.html) | Re-export of `errors::LmError`. | | `module::*` | Glob re-export. | | `module_ext::*` | Glob re-export. | | [`ModuleState`](https://docs.rs/dspy-rs/latest/dspy_rs/core/state/struct.ModuleState.html) | Re-export of `state::ModuleState`. | | [`ParseError`](https://docs.rs/dspy-rs/latest/dspy_rs/core/errors/enum.ParseError.html) | Re-export of `errors::ParseError`. | | [`Predicted`](https://docs.rs/dspy-rs/latest/dspy_rs/core/predicted/struct.Predicted.html) | Re-export of `predicted::Predicted`. | | [`PredictError`](https://docs.rs/dspy-rs/latest/dspy_rs/core/errors/enum.PredictError.html) | Re-export of `errors::PredictError`. | | [`PredictState`](https://docs.rs/dspy-rs/latest/dspy_rs/core/dyn_predictor/struct.PredictState.html) | Re-export of `dyn_predictor::PredictState`. | | `settings::*` | Glob re-export. | | `signature::*` | Glob re-export. | | [`SignatureSchema`](https://docs.rs/dspy-rs/latest/dspy_rs/core/schema/struct.SignatureSchema.html) | Re-export of `schema::SignatureSchema`. | | [`ToInput`](https://docs.rs/dspy-rs/latest/dspy_rs/core/example/trait.ToInput.html) | Re-export of `example::ToInput`. | | [`ToOutput`](https://docs.rs/dspy-rs/latest/dspy_rs/core/example/trait.ToOutput.html) | Re-export of `example::ToOutput`. | ## Modules | Item | Description | | ------------------------------------------------------------------------------- | ------------------------------------- | | [`example`](https://docs.rs/dspy-rs/latest/dspy_rs/core/example/index.html) | How trainset rows connect to modules. | | [`lm`](https://docs.rs/dspy-rs/latest/dspy_rs/core/lm/index.html) | | | [`module`](https://docs.rs/dspy-rs/latest/dspy_rs/core/module/index.html) | | | [`settings`](https://docs.rs/dspy-rs/latest/dspy_rs/core/settings/index.html) | | | [`signature`](https://docs.rs/dspy-rs/latest/dspy_rs/core/signature/index.html) | | ## `core::example` How trainset rows connect to modules. ### Traits | Item | Description | | ------------------------------------------------------------------------------------- | ------------------------------------------------------------------------ | | [`ToInput`](https://docs.rs/dspy-rs/latest/dspy_rs/core/example/trait.ToInput.html) | Projects a trainset row into a module's input type. | | [`ToOutput`](https://docs.rs/dspy-rs/latest/dspy_rs/core/example/trait.ToOutput.html) | Projects a trainset row into a signature's output type — the gold label. | ### Functions | Item | Description | | -------------------------------------------------------------------------------- | ----------------------------------------------------------------------- | | [`project`](https://docs.rs/dspy-rs/latest/dspy_rs/core/example/fn.project.html) | Field-name projection: serializes `row` and deserializes `U` out of it. | ## `core::lm` ### Re-exports | Item | Description | | -------------------- | --------------- | | `chat::*` | Glob re-export. | | `client_registry::*` | Glob re-export. | | `usage::*` | Glob re-export. | ### Structs | Item | Description | | ----------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------- | | [`LM`](https://docs.rs/dspy-rs/latest/dspy_rs/core/lm/struct.LM.html) | The live half: an `LMConfig` plus the initialized provider client and response cache. Constructed via `LM::builder()` or `LM::from_config`. | | [`LMConfig`](https://docs.rs/dspy-rs/latest/dspy_rs/core/lm/struct.LMConfig.html) | The data half of an LM: every generation parameter, no live state. | | [`LMConfigBuilder`](https://docs.rs/dspy-rs/latest/dspy_rs/core/lm/struct.LMConfigBuilder.html) | Use builder syntax to set the inputs and finish with `__internal_build()`). | | [`LMResponse`](https://docs.rs/dspy-rs/latest/dspy_rs/core/lm/struct.LMResponse.html) | | | [`ToolSet`](https://docs.rs/dspy-rs/latest/dspy_rs/core/lm/struct.ToolSet.html) | Pre-fetched tool definitions plus name-indexed executors. | ### Enums | Item | Description | | --------------------------------------------------------------------------------------- | ----------- | | [`ToolLoopMode`](https://docs.rs/dspy-rs/latest/dspy_rs/core/lm/enum.ToolLoopMode.html) | | ## `core::lm::chat` ### Structs | Item | Description | | ------------------------------------------------------------------------------------ | ----------- | | [`Chat`](https://docs.rs/dspy-rs/latest/dspy_rs/core/lm/chat/struct.Chat.html) | | | [`Message`](https://docs.rs/dspy-rs/latest/dspy_rs/core/lm/chat/struct.Message.html) | | ### Enums | Item | Description | | -------------------------------------------------------------------------------------------- | ----------- | | [`ContentBlock`](https://docs.rs/dspy-rs/latest/dspy_rs/core/lm/chat/enum.ContentBlock.html) | | | [`Role`](https://docs.rs/dspy-rs/latest/dspy_rs/core/lm/chat/enum.Role.html) | | ## `core::lm::client_registry` ### Structs | Item | Description | | ----------------------------------------------------------------------------------------------------------------------- | ----------- | | [`TestCompletionModel`](https://docs.rs/dspy-rs/latest/dspy_rs/core/lm/client_registry/struct.TestCompletionModel.html) | | ### Enums | Item | Description | | ----------------------------------------------------------------------------------------------- | ----------- | | [`LMClient`](https://docs.rs/dspy-rs/latest/dspy_rs/core/lm/client_registry/enum.LMClient.html) | | ### Traits | Item | Description | | -------------------------------------------------------------------------------------------------------------------- | ----------- | | [`CompletionProvider`](https://docs.rs/dspy-rs/latest/dspy_rs/core/lm/client_registry/trait.CompletionProvider.html) | | ## `core::lm::usage` ### Structs | Item | Description | | ------------------------------------------------------------------------------------- | ----------- | | [`LmUsage`](https://docs.rs/dspy-rs/latest/dspy_rs/core/lm/usage/struct.LmUsage.html) | | ## `core::module` ### Traits | Item | Description | | -------------------------------------------------------------------------------- | -------------------------------------------------- | | [`Module`](https://docs.rs/dspy-rs/latest/dspy_rs/core/module/trait.Module.html) | Strategy-swapping interface for prompting modules. | ### Functions | Item | Description | | --------------------------------------------------------------------------------------- | ------------------------------------------ | | [`forward_all`](https://docs.rs/dspy-rs/latest/dspy_rs/core/module/fn.forward_all.html) | Runs a module on many inputs concurrently. | ## `core::settings` ### Structs | Item | Description | | --------------------------------------------------------------------------------------- | ----------- | | [`Settings`](https://docs.rs/dspy-rs/latest/dspy_rs/core/settings/struct.Settings.html) | | ### Functions | Item | Description | | ------------------------------------------------------------------------------------- | ----------- | | [`configure`](https://docs.rs/dspy-rs/latest/dspy_rs/core/settings/fn.configure.html) | | | [`get_lm`](https://docs.rs/dspy-rs/latest/dspy_rs/core/settings/fn.get_lm.html) | | ### Statics | Item | Description | | ----------------------------------------------------------------------------------------------------- | ----------- | | [`GLOBAL_SETTINGS`](https://docs.rs/dspy-rs/latest/dspy_rs/core/settings/static.GLOBAL_SETTINGS.html) | | ## `core::signature` ### Structs | Item | Description | | ---------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------- | | [`ConstraintSpec`](https://docs.rs/dspy-rs/latest/dspy_rs/core/signature/struct.ConstraintSpec.html) | A compile-time constraint declared on a signature field via `#check(...)` or `#assert(...)`. | ### Enums | Item | Description | | -------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------ | | [`ConstraintKind`](https://docs.rs/dspy-rs/latest/dspy_rs/core/signature/enum.ConstraintKind.html) | Whether a constraint is a soft check (reported but not fatal) or a hard assert (fails the call). | ### Traits | Item | Description | | ----------------------------------------------------------------------------------------- | ---------------------------------------------------------------------- | | [`Signature`](https://docs.rs/dspy-rs/latest/dspy_rs/core/signature/trait.Signature.html) | Declares the input/output fields and instruction for a prompting task. |