LLM Function Calling LLM Tools

Tools and frameworks for parsing, routing, and executing function calls from LLMs, including schema generation, argument parsing, and multi-tool orchestration. Does NOT include general LLM SDKs, agent frameworks, or tool execution environments like sandboxes.

There are 52 llm function calling tools tracked. 7 score above 50 (established tier). The highest-rated is mozilla-ai/any-llm at 64/100 with 1,750 stars. 2 of the top 10 are actively maintained.

Get all 52 projects as JSON

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#	Tool	Score	Tier	Stars	Language
1	mozilla-ai/any-llm Communicate with an LLM provider using a single interface	64	Established	1,750	Python
2	Maximilian-Winter/llama-cpp-agent The llama-cpp-agent framework is a tool designed for easy interaction with...	64	Established	620	Python
3	CliDyn/climsight A next-generation climate information system that uses large language models...	62	Established	55	Python
4	ShishirPatil/gorilla Gorilla: Training and Evaluating LLMs for Function Calls (Tool Calls)	59	Established	12,759	Python
5	OoriData/OgbujiPT Client-side toolkit for using large language models, including where self-hosted	55	Established	115	Python
6	onnx/turnkeyml No-code CLI designed for accelerating ONNX workflows	54	Established	229	Python
7	rizerphe/local-llm-function-calling A tool for generating function arguments and choosing what function to call...	51	Established	439	Python
8	day50-dev/llcat cat for LLMs	49	Emerging	25	Python
9	machinelearningZH/simply-simplify-language Use machine learning to make your institutional communication more...	46	Emerging	49	Python
10	day50-dev/Mansnip Documentation snippets for LLM context injection	46	Emerging	94	Python
11	ForgeOpus/ModelForge A no-code toolkit to finetune LLMs on your local GPU—just upload data, pick...	45	Emerging	11	Python
12	emirsahin1/llm-axe A simple, intuitive toolkit for quickly implementing LLM powered applications.	44	Emerging	275	Python
13	namin/holey Python library for program synthesis and symbolic execution combining...	43	Emerging	38	Python
14	yomorun/llm-function-calling-examples Strongly-typed LLM Function Calling examples, run on OpenAI, Ollama, Mistral...	43	Emerging	18	TypeScript
15	dlp3d-ai/orchestrator Orchestrator is a real-time intelligent conversation system for building...	40	Emerging	4	Python
16	ntt-dkiku/chaos-eater An LLM-based system that fully automates Chaos Engineering (ASE 2025, NIER track)	40	Emerging	25	Python
17	KennispuntTwente/KWALLM An app for qualitative text analysis with large language models (LLMs) / Een...	40	Emerging	16	HTML
18	kennethreitz/simplemind Python API client for AI providers that intends to replace LangChain and...	39	Emerging	538	Python
19	piEsposito/tiny-ai-client Tiny client for LLMs with vision and tool calling. As simple as it gets.	37	Emerging	85	Python
20	andrewgcodes/dooo 1 universal function to do anything with LLMs. Painlessly swap between 100+ LLMs.	37	Emerging	11	Python
21	eunomia-bpf/KEN Kernel Extensions Large Language Model Agent	37	Emerging	36	C
22	invergent-ai/surogate-studio Enterprise-grade LLMOps platform to accelerate the development and...	36	Emerging	14	Java
23	amoffat/manifest Call an LLM like a function ✨	36	Emerging	43	Python
24	AtakanTekparmak/tiny_fnc_engine tiny_fnc_engine is a minimal python library that provides a flexible engine...	35	Emerging	38	Python
25	jamsocket/botsh An LLM-based agent that will install the tools it needs.	35	Emerging	225	Python
26	epuerta9/kitchenai Open Source LLMOps tool for AI teams	35	Emerging	129	Python
27	cadifyai/tool2schema Automatically convert functions to schemas for LLM function calling.	35	Emerging	21	Python
28	Leeroo-AI/leeroo_orchestrator The implementation of "Leeroo Orchestrator: Elevating LLMs Performance...	33	Emerging	56	Python
29	empower-ai/empower-functions GPT-4 level function calling models for real-world tool using use cases	31	Emerging	223	Python
30	git-vish/formwise Formwise is an AI-powered form builder that uses LLaMA with structured...	29	Experimental	1	TypeScript
31	mraniki/MyLLM A python package to interact with llm model	28	Experimental	8	Python
32	yankeexe/llm-function-calling-demo LLM Function Calling Demo for YouTube video 🎥	28	Experimental	10	Python
33	Shayan12456/use-every-llm One function to call any LLM.	27	Experimental	1	JavaScript
34	shashankdeshpande/llm-examples Examples showcasing the usage of OpenAI API's Function Calling feature,...	26	Experimental	3	Jupyter Notebook
35	unmodeled-tyler/thought-tracer Enhanced Logitlens TUI application for mechanistic interpretability research	23	Experimental	2	Python
36	A221133/ANE-LM Run large language model inference on Apple Neural Engine using private APIs...	22	Experimental	—	C++
37	AnuragB7/Ethereum-Protocol-Compliance LLM Powered compliance check for Ethereum code	22	Experimental	—	—
38	edlontech/sycophant A simple LLM Client for Elixir	22	Experimental	1	Elixir
39	Dicklesworthstone/llm-docs Condensed, LLM-optimized documentation for popular Python packages: stripped...	21	Experimental	64	—
40	Dw58/compare-your-models 🔍 Compare AI coding assistants with an open-source benchmark tool across...	21	Experimental	—	Python
41	pycui/universal-api Define and implement any functions on the fly with LLMs	21	Experimental	11	Python
42	kurtosis-tech/llm-package Spin up any(almost) llm locally!	21	Experimental	14	Starlark
43	subhamay-bhattacharyya/snowflake-de-llm-functions Hands-on demo using Snowflake Large Language Model functions for text...	21	Experimental	—	HCL
44	Airmomo/function-calling-parser function-calling-parser 是一个用于解析和调用外部工具的 Python 库，适用于支持 Function Calling...	17	Experimental	1	Jupyter Notebook
45	serenorg/seren-llm-council Multi-LLM Council with x402 payment integration - query multiple AI models,...	17	Experimental	—	Python
46	mgmonteleone/py-dev-rev Opinionated Python Library and MCP for DevRev	14	Experimental	—	Python
47	GH8ST007/llms_with_google_cloud Enable seamless integration of large language models with Google Cloud...	14	Experimental	—	Jupyter Notebook
48	MaurerKrisztian/two-step-llm-tool-call Make LLM Tools Work Better and Cheaper with a Two-Step Tool Call	14	Experimental	19	TypeScript
49	bxxf/supertools Programmatic tool calling for LLMs - instead of multiple round-trips, the...	13	Experimental	2	JavaScript
50	iclr-dummy-user/SwissNYF Code Base for Multi-Tool Usage for black box api access	12	Experimental	6	Jupyter Notebook
51	raphtlw/hyperfunc Streamlined Function Builder for LLMs	11	Experimental	—	TypeScript
52	Jawabreh0/local-llm-with-function-calling A language model that can interpret and execute functions/tools.	10	Experimental	2	Python