Crate sgr_agent 

sgr-agent — LLM client + agent framework

Pure Rust. No dlopen, no external binaries. Works on iOS, Android, WASM — anywhere reqwest+rustls compiles.

LLM Client (default)

• Structured output — response conforms to JSON Schema (SGR envelope)
• Function calling — tools as typed structs, model picks & fills params
• Flexible parser — extract JSON from markdown, broken JSON, streaming chunks
• Backends: Gemini (Google AI + Vertex AI), OpenAI (+ OpenRouter, Ollama)

Agent Framework (feature = "agent")

• Tool trait — define tools with typed args + async execute
• ToolRegistry — ordered collection, case-insensitive lookup, fuzzy resolve
• Agent trait — decides what tools to call given conversation history
• 3 agent variants: SgrAgent (structured output), ToolCallingAgent (native FC), FlexibleAgent (text parse)
• Agent loop — decide → execute → feed back, with 3-tier loop detection
• Progressive discovery — filter tools by relevance (TF-IDF scoring)

Re-exports

pub use coerce::coerce_value;

pub use flexible_parser::parse_flexible;

pub use flexible_parser::parse_flexible_coerced;

pub use schema::json_schema_for;

pub use schema::response_schema_for;

pub use tool::tool;

pub use tool::ToolDef;

pub use types::*;

Modules

baml_parser

Lightweight BAML parser — extracts classes, enums, functions from .baml files.

benchmark

Benchmark suite: 5 fixed tasks to measure agent quality.

codegen

Code generator: BAML AST → Rust source code with schemars + serde derives.

coerce

Fuzzy type coercion for LLM outputs.

evolution

Self-evolution: agent evaluates its own runs and proposes improvements.

flexible_parser

Flexible JSON parser — extracts structured data from messy LLM output.

gemini

Gemini API client — structured output + function calling.

openai

OpenAI-compatible API client — works with OpenAI, OpenRouter, Ollama.

openapi

OpenAPI → Agent Tool: convert any API spec into a searchable, callable tool.

schema

JSON Schema generation from Rust types via schemars.

tool

Tool definitions — typed Rust structs → function declarations for LLM APIs.

types