Langertha-0.301

Changes for version 0.301 - 2026-02-27

Rate limit extraction from HTTP response headers: new Langertha::RateLimit data class with normalized requests_limit, requests_remaining, tokens_limit, tokens_remaining, and reset fields plus raw provider-specific headers. Supported providers: OpenAI/Groq/Cerebras/OpenRouter/Replicate/HuggingFace (x-ratelimit-*) and Anthropic (anthropic-ratelimit-*). Engine stores latest rate_limit, Response carries per-response rate_limit with requests_remaining/tokens_remaining convenience methods.
New engine: HuggingFace — HuggingFace Inference Providers (OpenAI-compatible, org/model format, chat + streaming + tool calling)

Documentation

langertha_chat_ollama

Simple chat with Ollama

langertha_chat_openai

Simple chat with OpenAI

langertha_list_models

Simple script to check the model list on an OpenAI compatible API

langertha_whisper

Simple transcription with a Whisper compatible server or OpenAI

Modules

Langertha

The clan of fierce vikings with 🪓 and 🛡️ to AId your rAId

Langertha::Chat

Chat abstraction wrapping an engine with optional overrides

Langertha::Embedder

Embedding abstraction wrapping an engine with optional model override

Langertha::Engine::AKI

AKI.IO native API

Langertha::Engine::AKIOpenAI

AKI.IO via OpenAI-compatible API

Langertha::Engine::Anthropic

Anthropic API

Langertha::Engine::Cerebras

Cerebras Inference API

Langertha::Engine::DeepSeek

DeepSeek API

Langertha::Engine::Gemini

Google Gemini API

Langertha::Engine::Groq

GroqCloud API

Langertha::Engine::HuggingFace

HuggingFace Inference Providers API

Langertha::Engine::LlamaCpp

llama.cpp server

Langertha::Engine::MiniMax

MiniMax API

Langertha::Engine::Mistral

Mistral API

Langertha::Engine::NousResearch

Nous Research Inference API

Langertha::Engine::Ollama

Ollama API

Langertha::Engine::OllamaOpenAI

Ollama via OpenAI-compatible API

Langertha::Engine::OpenAI

OpenAI API

Langertha::Engine::OpenAIBase

Base class for OpenAI-compatible engines

Langertha::Engine::OpenRouter

OpenRouter API

Langertha::Engine::Perplexity

Perplexity Sonar API

Langertha::Engine::Remote

Base class for all remote engines

Langertha::Engine::Replicate

Replicate API

Langertha::Engine::Whisper

Whisper compatible transcription server

Langertha::Engine::vLLM

vLLM inference server

Langertha::ImageGen

Image generation abstraction wrapping an engine with optional overrides

Langertha::Plugin

Base class for plugins

Langertha::Plugin::Langfuse

Langfuse observability plugin for any PluginHost

Langertha::Raider

Autonomous agent with conversation history and MCP tools

Langertha::Raider::Result

Result object from a Raider raid

Langertha::RateLimit

Rate limit information from API response headers

Langertha::Request::HTTP

A HTTP Request inside of Langertha

Langertha::Response

LLM response with metadata

Langertha::Role::Chat

Role for APIs with normal chat functionality

Langertha::Role::ContextSize

Role for an engine where you can specify the context size (in tokens)

Langertha::Role::Embedding

Role for APIs with embedding functionality

Langertha::Role::HTTP

Role for HTTP APIs

Langertha::Role::ImageGeneration

Role for engines that support image generation

Langertha::Role::JSON

Role for JSON

Langertha::Role::KeepAlive

Role for engines that support keep-alive duration

Langertha::Role::Langfuse

Langfuse observability integration

Langertha::Role::Models

Role for APIs with several models

Langertha::Role::OpenAICompatible

Role for OpenAI-compatible API format

Langertha::Role::OpenAPI

Role for APIs with OpenAPI definition

Langertha::Role::PluginHost

Role for objects that host plugins (Raider, Engine)

Langertha::Role::ResponseFormat

Role for an engine where you can specify structured output

Langertha::Role::ResponseSize

Role for an engine where you can specify the response size (in tokens)

Langertha::Role::Seed

Role for an engine that can set a seed

Langertha::Role::Streaming

Role for streaming support

Langertha::Role::SystemPrompt

Role for APIs with system prompt

Langertha::Role::Temperature

Role for an engine that can have a temperature setting

Langertha::Role::ThinkTag

Configurable think tag filtering for reasoning models

Langertha::Role::Tools

Role for MCP tool calling support

Langertha::Role::Transcription

Role for APIs with transcription functionality

Langertha::Spec::Mistral

Pre-computed OpenAPI operations for Mistral

Langertha::Spec::Ollama

Pre-computed OpenAPI operations for Ollama

Langertha::Spec::OpenAI

Pre-computed OpenAPI operations for OpenAI

Langertha::Stream

Iterator for streaming responses

Langertha::Stream::Chunk

Represents a single chunk from a streaming response

LangerthaX

Bring your own viking!

Examples

Other files

To install Langertha, copy and paste the appropriate command in to your terminal.

cpanm

cpanm Langertha

CPAN shell

perl -MCPAN -e shell
install Langertha

For more information on module installation, please visit the detailed CPAN module installation guide.

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Changes for version 0.301 - 2026-02-27

Documentation

Modules

Examples

Other files

Module Install Instructions