sglang/examples/chat_template/tool_chat_template_deepseekv31.jinja

{% if not add_generation_prompt is defined %}
  {% set add_generation_prompt = false %}
{% endif %}
{% if not thinking is defined %}
  {% set thinking = false %}
{% endif %}
{% set ns = namespace(is_first=false, is_tool=false, system_prompt='', is_first_sp=true, is_last_user=false) %}
{%- for message in messages %}
  {%- if message['role'] == 'system' %}
    {%- if ns.is_first_sp %}
      {% set ns.system_prompt = ns.system_prompt + message['content'] %}
      {% set ns.is_first_sp = false %}
    {%- else %}
      {% set ns.system_prompt = ns.system_prompt + '\n\n' + message['content'] %}
    {%- endif %}
  {%- endif %}
{%- endfor %}

{% if tools is defined and tools is not none %}
  {% set tool_ns = namespace(text='## Tools\nYou have access to the following tools:\n') %}
  {% for tool in tools %}
    {% set tool_ns.text = tool_ns.text + '\n### ' + tool.function.name + '\nDescription: ' + tool.function.description + '\n\nParameters: ' + (tool.function.parameters | tojson) + '\n' %}
  {% endfor %}
  {% set tool_ns.text = tool_ns.text + "\nIMPORTANT: ALWAYS adhere to this exact format for tool use:\n<｜tool▁calls▁begin｜><｜tool▁call▁begin｜>tool_call_name<｜tool▁sep｜>tool_call_arguments<｜tool▁call▁end｜>{{additional_tool_calls}}<｜tool▁calls▁end｜>\n\nWhere:\n\n- `tool_call_name` must be an exact match to one of the available tools\n- `tool_call_arguments` must be valid JSON that strictly follows the tool's Parameters Schema\n- For multiple tool calls, chain them directly without separators or spaces\n" %}
  {% set ns.system_prompt = ns.system_prompt + '\n\n' + tool_ns.text %}
{% endif %}

{{ bos_token }}{{ ns.system_prompt }}
{%- for message in messages %}
  {%- if message['role'] == 'user' %}
    {%- set ns.is_tool = false -%}
    {%- set ns.is_first = false -%}
    {%- set ns.is_last_user = true -%}
    {{'<｜User｜>' + message['content']}}
  {%- endif %}
  {%- if message['role'] == 'assistant' and message['tool_calls'] is defined and message['tool_calls'] is not none %}
    {%- if ns.is_last_user %}
      {{'<｜Assistant｜></think>'}}
    {%- endif %}
    {%- set ns.is_last_user = false -%}
    {%- set ns.is_first = false %}
    {%- set ns.is_tool = false -%}
    {%- for tool in message['tool_calls'] %}
      {%- if not ns.is_first %}
        {%- if message['content'] is none %}
          {{'<｜tool▁calls▁begin｜><｜tool▁call▁begin｜>'+ tool['function']['name'] + '<｜tool▁sep｜>' + tool['function']['arguments']|tojson + '<｜tool▁call▁end｜>'}}
        {%- else %}
          {{message['content'] + '<｜tool▁calls▁begin｜><｜tool▁call▁begin｜>' + tool['function']['name'] + '<｜tool▁sep｜>' + tool['function']['arguments']|tojson + '<｜tool▁call▁end｜>'}}
        {%- endif %}
        {%- set ns.is_first = true -%}
      {%- else %}
        {{'<｜tool▁call▁begin｜>'+ tool['function']['name'] + '<｜tool▁sep｜>' + tool['function']['arguments']|tojson + '<｜tool▁call▁end｜>'}}
      {%- endif %}
    {%- endfor %}
    {{'<｜tool▁calls▁end｜><｜end▁of▁sentence｜>'}}
  {%- endif %}
  {%- if message['role'] == 'assistant' and (message['tool_calls'] is not defined or message['tool_calls'] is none) %}
    {%- if ns.is_last_user %}
      {{'<｜Assistant｜>'}}
      {%- if message['prefix'] is defined and message['prefix'] and thinking %}
        {{'<think>'}}
      {%- else %}
        {{'</think>'}}
      {%- endif %}
    {%- endif %}
    {%- set ns.is_last_user = false -%}
    {%- if ns.is_tool %}
      {{message['content'] + '<｜end▁of▁sentence｜>'}}
      {%- set ns.is_tool = false -%}
    {%- else %}
      {%- set content = message['content'] -%}
      {%- if '</think>' in content %}
        {%- set content = content.split('</think>', 1)[1] -%}
      {%- endif %}
      {{content + '<｜end▁of▁sentence｜>'}}
    {%- endif %}
  {%- endif %}
  {%- if message['role'] == 'tool' %}
    {%- set ns.is_last_user = false -%}
    {%- set ns.is_tool = true -%}
    {{'<｜tool▁output▁begin｜>' + message['content'] + '<｜tool▁output▁end｜>'}}
  {%- endif %}
{%- endfor -%}
{%- if add_generation_prompt and ns.is_last_user and not ns.is_tool %}
  {{'<｜Assistant｜>'}}
  {%- if not thinking %}
    {{'</think>'}}
  {%- else %}
    {{'<think>'}}
  {%- endif %}
{% endif %}