Function Calling

chat.h (ggml-org#9639) adds support for OpenAI-style function calling and is used in:

llama-server when started w/ --jinja flag
llama-cli (WIP: ggml-org#11556)

Universal support w/ Native & Generic handlers

Function calling is supported for all models (see ggml-org#9639):

Native tool call formats supported:
- Llama 3.1 / 3.3 (including builtin tools support - tool names for wolfram_alpha, web_search / brave_search, code_interpreter), Llama 3.2
- Functionary v3.1 / v3.2
- Hermes 2/3, Qwen 2.5
- Qwen 2.5 Coder (WIP: ggml-org#12034)
- Mistral Nemo
- Firefunction v2
- Command R7B
- DeepSeek R1 (WIP / seems reluctant to call any tools?)
Generic tool call is supported when the template isn't recognized by native format handlers (you'll see Chat format: Generic in the logs).
- Use --chat-template-file to override the template when appropriate (see examples below)
- Generic support may consume more tokens and be less efficient than a model's native format.

Show some common templates and which format handler they use

Template	Format
Almawave-Velvet-14B.jinja	Hermes 2 Pro
AtlaAI-Selene-1-Mini-Llama-3.1-8B.jinja	Llama 3.x
CohereForAI-aya-expanse-8b.jinja	Generic
CohereForAI-c4ai-command-r-plus-default.jinja	Generic
CohereForAI-c4ai-command-r-plus-rag.jinja	Generic
CohereForAI-c4ai-command-r-plus-tool_use.jinja	Generic
CohereForAI-c4ai-command-r7b-12-2024-default.jinja	Command R7B (extract reasoning)
CohereForAI-c4ai-command-r7b-12-2024-rag.jinja	Command R7B (extract reasoning)
CohereForAI-c4ai-command-r7b-12-2024-tool_use.jinja	Command R7B (extract reasoning)
CohereForAI-c4ai-command-r7b-12-2024.jinja	Generic
DavieLion-Llama-3.2-1B-SPIN-iter3.jinja	Generic
Delta-Vector-Rei-12B.jinja	Mistral Nemo
EpistemeAI-Mistral-Nemo-Instruct-12B-Philosophy-Math.jinja	Mistral Nemo
FlofloB-83k_continued_pretraining_Qwen2.5-0.5B-Instruct_Unsloth_merged_16bit.jinja	Hermes 2 Pro
FlofloB-test_continued_pretraining_Phi-3-mini-4k-instruct_Unsloth_merged_16bit.jinja	Generic
HelpingAI-HAI-SER.jinja	Generic
HuggingFaceTB-SmolLM2-1.7B-Instruct.jinja	Generic
HuggingFaceTB-SmolLM2-135M-Instruct.jinja	Generic
HuggingFaceTB-SmolLM2-360M-Instruct.jinja	Generic
INSAIT-Institute-BgGPT-Gemma-2-27B-IT-v1.0.jinja	Generic
Ihor-Text2Graph-R1-Qwen2.5-0.5b.jinja	Hermes 2 Pro
Infinigence-Megrez-3B-Instruct.jinja	Generic
Josephgflowers-TinyLlama_v1.1_math_code-world-test-1.jinja	Generic
LGAI-EXAONE-EXAONE-3.5-2.4B-Instruct.jinja	Generic
LGAI-EXAONE-EXAONE-3.5-7.8B-Instruct.jinja	Generic
LatitudeGames-Wayfarer-12B.jinja	Generic
Magpie-Align-Llama-3-8B-Magpie-Align-v0.1.jinja	Generic
Magpie-Align-Llama-3.1-8B-Magpie-Align-v0.1.jinja	Generic
MaziyarPanahi-calme-3.2-instruct-78b.jinja	Generic
MiniMaxAI-MiniMax-Text-01.jinja	Generic
MiniMaxAI-MiniMax-VL-01.jinja	Generic
NaniDAO-deepseek-r1-qwen-2.5-32B-ablated.jinja	DeepSeek R1 (extract reasoning)
NexaAIDev-Octopus-v2.jinja	Generic
NousResearch-Hermes-2-Pro-Llama-3-8B-default.jinja	Generic
NousResearch-Hermes-2-Pro-Llama-3-8B-tool_use.jinja	Hermes 2 Pro
NousResearch-Hermes-2-Pro-Mistral-7B-default.jinja	Generic
NousResearch-Hermes-2-Pro-Mistral-7B-tool_use.jinja	Hermes 2 Pro
NousResearch-Hermes-3-Llama-3.1-70B-default.jinja	Generic
NousResearch-Hermes-3-Llama-3.1-70B-tool_use.jinja	Hermes 2 Pro
NovaSky-AI-Sky-T1-32B-Flash.jinja	Hermes 2 Pro
NovaSky-AI-Sky-T1-32B-Preview.jinja	Hermes 2 Pro
OnlyCheeini-greesychat-turbo.jinja	Generic
Orenguteng-Llama-3.1-8B-Lexi-Uncensored-V2.jinja	Llama 3.x
OrionStarAI-Orion-14B-Chat.jinja	Generic
PowerInfer-SmallThinker-3B-Preview.jinja	Generic
PrimeIntellect-INTELLECT-1-Instruct.jinja	Generic
Qwen-QVQ-72B-Preview.jinja	Generic
Qwen-QwQ-32B-Preview.jinja	Hermes 2 Pro
Qwen-Qwen1.5-7B-Chat.jinja	Generic
Qwen-Qwen2-7B-Instruct.jinja	Generic
Qwen-Qwen2-VL-72B-Instruct.jinja	Generic
Qwen-Qwen2-VL-7B-Instruct.jinja	Generic
Qwen-Qwen2.5-0.5B.jinja	Hermes 2 Pro
Qwen-Qwen2.5-1.5B-Instruct.jinja	Hermes 2 Pro
Qwen-Qwen2.5-14B-Instruct-1M.jinja	Hermes 2 Pro
Qwen-Qwen2.5-14B.jinja	Hermes 2 Pro
Qwen-Qwen2.5-32B-Instruct.jinja	Hermes 2 Pro
Qwen-Qwen2.5-32B.jinja	Hermes 2 Pro
Qwen-Qwen2.5-3B-Instruct.jinja	Hermes 2 Pro
Qwen-Qwen2.5-72B-Instruct.jinja	Hermes 2 Pro
Qwen-Qwen2.5-7B-Instruct-1M.jinja	Hermes 2 Pro
Qwen-Qwen2.5-7B-Instruct.jinja	Hermes 2 Pro
Qwen-Qwen2.5-7B.jinja	Hermes 2 Pro
Qwen-Qwen2.5-Coder-32B-Instruct.jinja	Hermes 2 Pro
Qwen-Qwen2.5-Coder-7B-Instruct.jinja	Hermes 2 Pro
Qwen-Qwen2.5-Math-1.5B.jinja	Hermes 2 Pro
Qwen-Qwen2.5-Math-7B-Instruct.jinja	Hermes 2 Pro
Qwen-Qwen2.5-VL-3B-Instruct.jinja	Hermes 2 Pro
Qwen-Qwen2.5-VL-72B-Instruct.jinja	Hermes 2 Pro
Qwen-Qwen2.5-VL-7B-Instruct.jinja	Hermes 2 Pro
RWKV-Red-Team-ARWKV-7B-Preview-0.1.jinja	Hermes 2 Pro
SakanaAI-TinySwallow-1.5B-Instruct.jinja	Hermes 2 Pro
SakanaAI-TinySwallow-1.5B.jinja	Hermes 2 Pro
Sao10K-70B-L3.3-Cirrus-x1.jinja	Llama 3.x
SentientAGI-Dobby-Mini-Leashed-Llama-3.1-8B.jinja	Llama 3.x
SentientAGI-Dobby-Mini-Unhinged-Llama-3.1-8B.jinja	Llama 3.x
Steelskull-L3.3-Damascus-R1.jinja	Llama 3.x
Steelskull-L3.3-MS-Nevoria-70b.jinja	Llama 3.x
Steelskull-L3.3-Nevoria-R1-70b.jinja	Llama 3.x
THUDM-glm-4-9b-chat.jinja	Generic
THUDM-glm-edge-1.5b-chat.jinja	Generic
Tarek07-Progenitor-V1.1-LLaMa-70B.jinja	Llama 3.x
TheBloke-FusionNet_34Bx2_MoE-AWQ.jinja	Generic
TinyLlama-TinyLlama-1.1B-Chat-v1.0.jinja	Generic
UCLA-AGI-Mistral7B-PairRM-SPPO-Iter3.jinja	Generic
ValiantLabs-Llama3.1-8B-Enigma.jinja	Llama 3.x
abacusai-Fewshot-Metamath-OrcaVicuna-Mistral.jinja	Generic
ai21labs-AI21-Jamba-1.5-Large.jinja	Generic
allenai-Llama-3.1-Tulu-3-405B-SFT.jinja	Generic
allenai-Llama-3.1-Tulu-3-405B.jinja	Generic
allenai-Llama-3.1-Tulu-3-8B.jinja	Generic
arcee-ai-Virtuoso-Lite.jinja	Hermes 2 Pro
arcee-ai-Virtuoso-Medium-v2.jinja	Hermes 2 Pro
arcee-ai-Virtuoso-Small-v2.jinja	Hermes 2 Pro
avemio-GRAG-NEMO-12B-ORPO-HESSIAN-AI.jinja	Generic
bespokelabs-Bespoke-Stratos-7B.jinja	Hermes 2 Pro
bfuzzy1-acheron-m1a-llama.jinja	Generic
bofenghuang-vigogne-2-70b-chat.jinja	Generic
bytedance-research-UI-TARS-72B-DPO.jinja	Generic
bytedance-research-UI-TARS-7B-DPO.jinja	Generic
bytedance-research-UI-TARS-7B-SFT.jinja	Generic
carsenk-phi3.5_mini_exp_825_uncensored.jinja	Generic
cyberagent-DeepSeek-R1-Distill-Qwen-14B-Japanese.jinja	DeepSeek R1 (extract reasoning)
cyberagent-DeepSeek-R1-Distill-Qwen-32B-Japanese.jinja	DeepSeek R1 (extract reasoning)
databricks-dbrx-instruct.jinja	Generic
deepseek-ai-DeepSeek-Coder-V2-Instruct.jinja	Generic
deepseek-ai-DeepSeek-Coder-V2-Lite-Base.jinja	Generic
deepseek-ai-DeepSeek-Coder-V2-Lite-Instruct.jinja	Generic
deepseek-ai-DeepSeek-R1-Distill-Llama-70B.jinja	DeepSeek R1 (extract reasoning)
deepseek-ai-DeepSeek-R1-Distill-Llama-8B.jinja	DeepSeek R1 (extract reasoning)
deepseek-ai-DeepSeek-R1-Distill-Qwen-1.5B.jinja	DeepSeek R1 (extract reasoning)
deepseek-ai-DeepSeek-R1-Distill-Qwen-14B.jinja	DeepSeek R1 (extract reasoning)
deepseek-ai-DeepSeek-R1-Distill-Qwen-32B.jinja	DeepSeek R1 (extract reasoning)
deepseek-ai-DeepSeek-R1-Distill-Qwen-7B.jinja	DeepSeek R1 (extract reasoning)
deepseek-ai-DeepSeek-R1-Zero.jinja	DeepSeek R1 (extract reasoning)
deepseek-ai-DeepSeek-R1.jinja	DeepSeek R1 (extract reasoning)
deepseek-ai-DeepSeek-V2-Lite.jinja	Generic
deepseek-ai-DeepSeek-V2.5.jinja	DeepSeek R1 (extract reasoning)
deepseek-ai-DeepSeek-V3.jinja	DeepSeek R1 (extract reasoning)
deepseek-ai-deepseek-coder-33b-instruct.jinja	Generic
deepseek-ai-deepseek-coder-6.7b-instruct.jinja	Generic
deepseek-ai-deepseek-coder-7b-instruct-v1.5.jinja	Generic
deepseek-ai-deepseek-llm-67b-chat.jinja	Generic
deepseek-ai-deepseek-llm-7b-chat.jinja	Generic
dicta-il-dictalm2.0-instruct.jinja	Generic
ehristoforu-Falcon3-8B-Franken-Basestruct.jinja	Hermes 2 Pro
fireworks-ai-llama-3-firefunction-v2.jinja	FireFunction v2
godlikehhd-alpaca_data_sampled_ifd_new_5200.jinja	Hermes 2 Pro
godlikehhd-alpaca_data_score_max_0.7_2600.jinja	Hermes 2 Pro
google-gemma-2-27b-it.jinja	Generic
google-gemma-2-2b-it.jinja	Generic
google-gemma-2-2b-jpn-it.jinja	Generic
google-gemma-7b-it.jinja	Generic
huihui-ai-DeepSeek-R1-Distill-Llama-70B-abliterated.jinja	DeepSeek R1 (extract reasoning)
huihui-ai-DeepSeek-R1-Distill-Llama-8B-abliterated.jinja	DeepSeek R1 (extract reasoning)
huihui-ai-DeepSeek-R1-Distill-Qwen-14B-abliterated-v2.jinja	DeepSeek R1 (extract reasoning)
huihui-ai-DeepSeek-R1-Distill-Qwen-32B-abliterated.jinja	DeepSeek R1 (extract reasoning)
huihui-ai-DeepSeek-R1-Distill-Qwen-7B-abliterated-v2.jinja	DeepSeek R1 (extract reasoning)
huihui-ai-Qwen2.5-14B-Instruct-1M-abliterated.jinja	Hermes 2 Pro
ibm-granite-granite-3.1-8b-instruct.jinja	Generic
indischepartij-MiniCPM-3B-OpenHermes-2.5-v2.jinja	Generic
inflatebot-MN-12B-Mag-Mell-R1.jinja	Generic
jinaai-ReaderLM-v2.jinja	Generic
kms7530-chemeng_qwen-math-7b_24_1_100_1_nonmath.jinja	Hermes 2 Pro
knifeayumu-Cydonia-v1.3-Magnum-v4-22B.jinja	Mistral Nemo
langgptai-qwen1.5-7b-chat-sa-v0.1.jinja	Generic
lightblue-DeepSeek-R1-Distill-Qwen-7B-Japanese.jinja	DeepSeek R1 (extract reasoning)
mattshumer-Reflection-Llama-3.1-70B.jinja	Generic
meetkai-functionary-medium-v3.1.jinja	Functionary v3.1 Llama 3.1
meetkai-functionary-medium-v3.2.jinja	Functionary v3.2
meta-llama-Llama-2-7b-chat-hf.jinja	Generic
meta-llama-Llama-3.1-8B-Instruct.jinja	Llama 3.x
meta-llama-Llama-3.2-11B-Vision-Instruct.jinja	Llama 3.x
meta-llama-Llama-3.2-1B-Instruct.jinja	Llama 3.x
meta-llama-Llama-3.2-3B-Instruct.jinja	Llama 3.x
meta-llama-Llama-3.3-70B-Instruct.jinja	Llama 3.x
meta-llama-Meta-Llama-3-8B-Instruct.jinja	Generic
meta-llama-Meta-Llama-3.1-8B-Instruct.jinja	Llama 3.x
microsoft-Phi-3-medium-4k-instruct.jinja	Generic
microsoft-Phi-3-mini-4k-instruct.jinja	Generic
microsoft-Phi-3-small-8k-instruct.jinja	Generic
microsoft-Phi-3.5-mini-instruct.jinja	Generic
microsoft-Phi-3.5-vision-instruct.jinja	Generic
microsoft-phi-4.jinja	Generic
migtissera-Tess-3-Mistral-Nemo-12B.jinja	Generic
ministral-Ministral-3b-instruct.jinja	Generic
mistralai-Codestral-22B-v0.1.jinja	Generic
mistralai-Mistral-7B-Instruct-v0.1.jinja	Generic
mistralai-Mistral-7B-Instruct-v0.2.jinja	Generic
mistralai-Mistral-7B-Instruct-v0.3.jinja	Mistral Nemo
mistralai-Mistral-Large-Instruct-2407.jinja	Mistral Nemo
mistralai-Mistral-Large-Instruct-2411.jinja	Generic
mistralai-Mistral-Nemo-Instruct-2407.jinja	Mistral Nemo
mistralai-Mistral-Small-24B-Instruct-2501.jinja	Generic
mistralai-Mixtral-8x7B-Instruct-v0.1.jinja	Generic
mkurman-Qwen2.5-14B-DeepSeek-R1-1M.jinja	Hermes 2 Pro
mlabonne-AlphaMonarch-7B.jinja	Generic
mlx-community-Josiefied-Qwen2.5-0.5B-Instruct-abliterated-v1-float32.jinja	Hermes 2 Pro
mlx-community-Qwen2.5-VL-7B-Instruct-8bit.jinja	Hermes 2 Pro
mobiuslabsgmbh-DeepSeek-R1-ReDistill-Qwen-1.5B-v1.1.jinja	DeepSeek R1 (extract reasoning)
netcat420-MFANNv0.20.jinja	Generic
netcat420-MFANNv0.24.jinja	Generic
netease-youdao-Confucius-o1-14B.jinja	Hermes 2 Pro
nvidia-AceMath-7B-RM.jinja	Hermes 2 Pro
nvidia-Eagle2-1B.jinja	Hermes 2 Pro
nvidia-Eagle2-9B.jinja	Hermes 2 Pro
nvidia-Llama-3.1-Nemotron-70B-Instruct-HF.jinja	Llama 3.x
onnx-community-DeepSeek-R1-Distill-Qwen-1.5B-ONNX.jinja	DeepSeek R1 (extract reasoning)
open-thoughts-OpenThinker-7B.jinja	Hermes 2 Pro
openchat-openchat-3.5-0106.jinja	Generic
pankajmathur-orca_mini_v6_8b.jinja	Generic
princeton-nlp-Mistral-7B-Base-SFT-RDPO.jinja	Generic
princeton-nlp-Mistral-7B-Instruct-DPO.jinja	Generic
princeton-nlp-Mistral-7B-Instruct-RDPO.jinja	Generic
prithivMLmods-Bellatrix-Tiny-1.5B-R1.jinja	Hermes 2 Pro
prithivMLmods-Bellatrix-Tiny-1B-R1.jinja	Llama 3.x
prithivMLmods-Bellatrix-Tiny-1B-v3.jinja	Generic
prithivMLmods-Bellatrix-Tiny-3B-R1.jinja	Llama 3.x
prithivMLmods-Blaze-14B-xElite.jinja	Generic
prithivMLmods-Calcium-Opus-14B-Elite2-R1.jinja	Hermes 2 Pro
prithivMLmods-Calme-Ties-78B.jinja	Generic
prithivMLmods-Calme-Ties2-78B.jinja	Generic
prithivMLmods-Calme-Ties3-78B.jinja	Generic
prithivMLmods-ChemQwen2-vL.jinja	Generic
prithivMLmods-GWQ2b.jinja	Generic
prithivMLmods-LatexMind-2B-Codec.jinja	Generic
prithivMLmods-Llama-3.2-6B-AlgoCode.jinja	Llama 3.x
prithivMLmods-Megatron-Opus-14B-Exp.jinja	Hermes 2 Pro
prithivMLmods-Megatron-Opus-14B-Stock.jinja	Hermes 2 Pro
prithivMLmods-Megatron-Opus-7B-Exp.jinja	Hermes 2 Pro
prithivMLmods-Omni-Reasoner-Merged.jinja	Hermes 2 Pro
prithivMLmods-Omni-Reasoner4-Merged.jinja	Hermes 2 Pro
prithivMLmods-Primal-Opus-14B-Optimus-v1.jinja	Hermes 2 Pro
prithivMLmods-QwQ-Math-IO-500M.jinja	Hermes 2 Pro
prithivMLmods-Qwen-7B-Distill-Reasoner.jinja	DeepSeek R1 (extract reasoning)
prithivMLmods-Qwen2.5-1.5B-DeepSeek-R1-Instruct.jinja	Hermes 2 Pro
prithivMLmods-Qwen2.5-14B-DeepSeek-R1-1M.jinja	Hermes 2 Pro
prithivMLmods-Qwen2.5-32B-DeepSeek-R1-Instruct.jinja	Hermes 2 Pro
prithivMLmods-Qwen2.5-7B-DeepSeek-R1-1M.jinja	Hermes 2 Pro
prithivMLmods-Triangulum-v2-10B.jinja	Hermes 2 Pro
qingy2024-Falcon3-2x10B-MoE-Instruct.jinja	Hermes 2 Pro
rubenroy-Zurich-14B-GCv2-5m.jinja	Hermes 2 Pro
rubenroy-Zurich-7B-GCv2-5m.jinja	Hermes 2 Pro
silma-ai-SILMA-Kashif-2B-Instruct-v1.0.jinja	Generic
simplescaling-s1-32B.jinja	Hermes 2 Pro
sometimesanotion-Lamarck-14B-v0.7.jinja	Hermes 2 Pro
sonthenguyen-zephyr-sft-bnb-4bit-DPO-mtbr-180steps.jinja	Generic
sthenno-tempesthenno-icy-0130.jinja	Generic
sumink-qwft.jinja	Hermes 2 Pro
teknium-OpenHermes-2.5-Mistral-7B.jinja	Generic
thirdeyeai-elevate360m.jinja	Generic
tiiuae-Falcon3-10B-Instruct.jinja	Hermes 2 Pro
unsloth-DeepSeek-R1-Distill-Llama-8B-unsloth-bnb-4bit.jinja	DeepSeek R1 (extract reasoning)
unsloth-DeepSeek-R1-Distill-Llama-8B.jinja	DeepSeek R1 (extract reasoning)
unsloth-DeepSeek-R1.jinja	DeepSeek R1 (extract reasoning)
unsloth-Mistral-Small-24B-Instruct-2501-unsloth-bnb-4bit.jinja	Generic
upstage-solar-pro-preview-instruct.jinja	Generic
whyhow-ai-PatientSeek.jinja	Generic
xwen-team-Xwen-72B-Chat.jinja	Hermes 2 Pro
xwen-team-Xwen-7B-Chat.jinja	Hermes 2 Pro

This table can be generated with:

./build/bin/test-chat ../minja/build/tests/*.jinja 2>/dev/null

Usage - need tool-aware Jinja template

First, start a server with any model, but make sure it has a tools-enabled template: you can verify this by inspecting the chat_template or chat_template_tool_use properties in http://localhost:8080/props).

Here are some models known to work (w/ chat template override when needed):

# Native support:

llama-server --jinja -fa -hf bartowski/Qwen2.5-7B-Instruct-GGUF:Q4_K_M
llama-server --jinja -fa -hf bartowski/Mistral-Nemo-Instruct-2407-GGUF:Q6_K_L
llama-server --jinja -fa -hf bartowski/Llama-3.3-70B-Instruct-GGUF:Q4_K_M

# Native support for DeepSeek R1 works best w/ our template override (official template is buggy, although we do work around it)

llama-server --jinja -fa -hf bartowski/DeepSeek-R1-Distill-Qwen-7B-GGUF:Q6_K_L \
    --chat-template-file models/templates/llama-cpp-deepseek-r1.jinja

llama-server --jinja -fa -hf bartowski/DeepSeek-R1-Distill-Qwen-32B-GGUF:Q4_K_M \
    --chat-template-file models/templates/llama-cpp-deepseek-r1.jinja

# Native support requires the right template for these GGUFs:

llama-server --jinja -fa -hf bartowski/functionary-small-v3.2-GGUF:Q4_K_M
    --chat-template-file models/templates/meetkai-functionary-medium-v3.2.jinja

llama-server --jinja -fa -hf bartowski/Hermes-2-Pro-Llama-3-8B-GGUF:Q4_K_M \
    --chat-template-file models/templates/NousResearch-Hermes-2-Pro-Llama-3-8B-tool_use.jinja

llama-server --jinja -fa -hf bartowski/Hermes-3-Llama-3.1-8B-GGUF:Q4_K_M \
    --chat-template-file models/templates/NousResearch-Hermes-3-Llama-3.1-8B-tool_use.jinja

llama-server --jinja -fa -hf bartowski/firefunction-v2-GGUF -hff firefunction-v2-IQ1_M.gguf \
    --chat-template-file models/templates/fireworks-ai-llama-3-firefunction-v2.jinja

llama-server --jinja -fa -hf bartowski/c4ai-command-r7b-12-2024-GGUF:Q6_K_L \
    --chat-template-file models/templates/CohereForAI-c4ai-command-r7b-12-2024-tool_use.jinja

# Generic format support
llama-server --jinja -fa -hf bartowski/phi-4-GGUF:Q4_0
llama-server --jinja -fa -hf bartowski/gemma-2-2b-it-GGUF:Q8_0
llama-server --jinja -fa -hf bartowski/c4ai-command-r-v01-GGUF:Q2_K

To get the official template from original HuggingFace repos, you can use scripts/get_chat_template.py (see examples invocations in models/templates/README.md)

Tip

If there is no official tool_use Jinja template, you may want to set --chat-template chatml to use a default that works with many models (YMMV!), or write your own (e.g. we provide a custom llama-cpp-deepseek-r1.jinja for DeepSeek R1 distills)

Test in CLI (or with any library / software that can use OpenAI-compatible API backends):

curl http://localhost:8080/v1/chat/completions -d '{
"model": "gpt-3.5-turbo",
"tools": [
    {
    "type":"function",
    "function":{
        "name":"python",
        "description":"Runs code in an ipython interpreter and returns the result of the execution after 60 seconds.",
        "parameters":{
        "type":"object",
        "properties":{
            "code":{
            "type":"string",
            "description":"The code to run in the ipython interpreter."
            }
        },
        "required":["code"]
        }
    }
    }
],
"messages": [
    {
    "role": "user",
    "content": "Print a hello world message with python."
    }
]
}'

Show output

{
"choices": [
    {
    "finish_reason": "tool",
    "index": 0,
    "message": {
        "content": null,
        "tool_calls": [
        {
            "name": "python",
            "arguments": "{\"code\":\" \\nprint(\\\"Hello, World!\\\")\"}"
        }
        ],
        "role": "assistant"
    }
    }
],
"created": 1727287211,
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