diff --git a/pyproject.toml b/pyproject.toml
index baa118d..d2d5517 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -9,9 +9,10 @@ license = "LGPL-3.0-or-later"
 requires-python = ">=3.13"
 dependencies = [
     "megasniff>=0.2.0",
-    "breakshaft>=0.1.1",
+    "breakshaft>=0.1.3",
     "case-insensitive-dictionary>=0.2.1",
     "mypy>=1.17.0",
+    "jinja2>=3.1.6",
 ]
 
 [tool.uv.sources]
@@ -46,4 +47,4 @@ all_containers = [
     { "include-group" = "xml" },
     { "include-group" = "msgpack" },
     { "include-group" = "json" },
-]
\ No newline at end of file
+]
diff --git a/src/turbosloth/__main__.py b/src/turbosloth/__main__.py
index 12f7833..6c0c88c 100644
--- a/src/turbosloth/__main__.py
+++ b/src/turbosloth/__main__.py
@@ -10,7 +10,7 @@ from turbosloth.interfaces.serialized import SerializedResponse, SerializedReque
 from turbosloth.internal_types import QTYPE, BTYPE, PTYPE, HTYPE
 from turbosloth.req_schema import UnwrappedRequest
 
-app = SlothApp()
+app = SlothApp(di_autodoc_prefix='/didoc')
 
 
 @app.get("/")
diff --git a/src/turbosloth/app.py b/src/turbosloth/app.py
index 8573a16..2175ddf 100644
--- a/src/turbosloth/app.py
+++ b/src/turbosloth/app.py
@@ -1,11 +1,13 @@
+import html
 import typing
 from typing import Optional, Callable, Awaitable, Protocol, get_type_hints, get_origin, get_args, Any, Annotated
 
 import breakshaft.util_mermaid
 import megasniff.exceptions
-from breakshaft.models import ConversionPoint
+from breakshaft.models import ConversionPoint, Callgraph
 from megasniff import SchemaInflatorGenerator
 
+from .didoc import create_di_autodoc_handler
 from .exceptions import HTTPException
 from .interfaces.base import BasicRequest, BasicResponse
 from .interfaces.serialize_selector import SerializeSelector
@@ -179,16 +181,24 @@ class MethodRoutersApp(ASGIApp):
 
 
 class SlothApp(HTTPApp, WSApp, LifespanApp, MethodRoutersApp):
+    di_autodoc_prefix: Optional[str] = None
 
     def __init__(self,
                  on_startup: Optional[Callable[[], Awaitable[None]]] = None,
-                 on_shutdown: Optional[Callable[[], Awaitable[None]]] = None):
+                 on_shutdown: Optional[Callable[[], Awaitable[None]]] = None,
+                 di_autodoc_prefix: Optional[str] = None,
+                 ):
         self.router = Router()
         self._on_startup = on_startup
         self._on_shutdown = on_shutdown
         self.serialize_selector = SerializeSelector()
         self.infl_generator = SchemaInflatorGenerator(strict_mode=True)
-        self.inj_repo = ConvRepo()
+        self.di_autodoc_prefix = di_autodoc_prefix
+
+        if di_autodoc_prefix is not None:
+            self.inj_repo = ConvRepo(store_sources=True, store_callseq=True)
+        else:
+            self.inj_repo = ConvRepo()
 
         @self.inj_repo.mark_injector()
         def extract_query(req: BasicRequest | SerializedRequest) -> QTYPE:
@@ -231,42 +241,43 @@ class SlothApp(HTTPApp, WSApp, LifespanApp, MethodRoutersApp):
                 if get_origin(tp) == UnwrappedRequest:
                     req_schema = tp
 
-            if req_schema is None:
-                raise ValueError(f'Unable to find request schema in handler {fn}')
+            if req_schema is not None:
 
-            unwrap_types = get_args(req_schema)
-            defaults = (QTYPE, BTYPE, PTYPE, HTYPE)
+                unwrap_types = get_args(req_schema)
+                defaults = (QTYPE, BTYPE, PTYPE, HTYPE)
 
-            def none_generator(*args) -> None:
-                return None
+                def none_generator(*args) -> None:
+                    return None
 
-            def create_convertor(t, def_type):
-                infl = None
-                if t not in [def_type, None, Any]:
-                    infl = self.infl_generator.schema_to_inflator(
-                        t,
-                        strict_mode_override=False,
-                        from_type_override=def_type
+                def create_convertor(t, def_type):
+                    infl = None
+                    if t not in [def_type, None, Any]:
+                        infl = self.infl_generator.schema_to_inflator(
+                            t,
+                            strict_mode_override=False,
+                            from_type_override=def_type
+                        )
+                        return ConversionPoint(infl, t, (def_type,), (), )
+                    else:
+                        return ConversionPoint(none_generator, t, (def_type,), (), )
+
+                fork_with = set(map(lambda x: create_convertor(*x), zip(unwrap_types, defaults)))
+
+                def construct_unwrap(q: QTYPE, b: BTYPE, p: PTYPE, h: HTYPE) -> UnwrappedRequest:
+                    return UnwrappedRequest(q, b, p, h)
+
+                fork_with |= {
+                    ConversionPoint(
+                        construct_unwrap,
+                        req_schema,
+                        unwrap_types,
+                        (),
                     )
-                    return ConversionPoint(infl, t, (def_type,), (), )
-                else:
-                    return ConversionPoint(none_generator, t, (def_type,), (), )
+                }
 
-            fork_with = set(map(lambda x: create_convertor(*x), zip(unwrap_types, defaults)))
-
-            def construct_unwrap(q: QTYPE, b: BTYPE, p: PTYPE, h: HTYPE) -> UnwrappedRequest:
-                return UnwrappedRequest(q, b, p, h)
-
-            fork_with |= {
-                ConversionPoint(
-                    construct_unwrap,
-                    req_schema,
-                    unwrap_types,
-                    (),
-                )
-            }
-
-            tmp_repo = self.inj_repo.fork(fork_with)
+                tmp_repo = self.inj_repo.fork(fork_with)
+            else:
+                tmp_repo = self.inj_repo
 
             p = tmp_repo.create_pipeline(
                 (Send, BasicRequest),
@@ -275,6 +286,12 @@ class SlothApp(HTTPApp, WSApp, LifespanApp, MethodRoutersApp):
             )
 
             self.router.add(method, path_pattern, p)
+
+            if self.di_autodoc_prefix is not None and not path_pattern.startswith(
+                    self.di_autodoc_prefix + '/' + method + self.di_autodoc_prefix):
+                self.route('GET', self.di_autodoc_prefix + '/' + method + path_pattern)(
+                    create_di_autodoc_handler(method, path_pattern, p))
+
             return fn
 
         return decorator
diff --git a/src/turbosloth/didoc/__init__.py b/src/turbosloth/didoc/__init__.py
new file mode 100644
index 0000000..7897137
--- /dev/null
+++ b/src/turbosloth/didoc/__init__.py
@@ -0,0 +1,50 @@
+import html
+import importlib.resources
+from dataclasses import dataclass
+from typing import Callable
+
+import breakshaft.util_mermaid
+import jinja2
+
+from turbosloth.interfaces.serialized import SerializedResponse
+from turbosloth.interfaces.serialized.html import HTMLSerializedResponse
+from turbosloth.types import InternalHandlerType
+
+
+@dataclass
+class MMDiagramData:
+    name: str
+    data: str
+
+
+def create_di_autodoc_handler(method: str, path: str, handler: InternalHandlerType) -> Callable[[], SerializedResponse]:
+    callseq = getattr(handler, '__breakshaft_callseq__', [])
+    mmd_flowchart = breakshaft.util_mermaid.draw_callseq_mermaid(callseq)
+    mmd_flowchart1 = breakshaft.util_mermaid.draw_callseq_mermaid([callseq[0]] + callseq)
+    mmd_flowchart2 = breakshaft.util_mermaid.draw_callseq_mermaid([callseq[-1]] + callseq)
+
+    sources = getattr(handler, '__breakshaft_render_src__', '')
+    escaped_sources = html.escape(sources)
+
+    template_path = importlib.resources.files('turbosloth.didoc')
+    loader = jinja2.FileSystemLoader(str(template_path))
+    templateEnv = jinja2.Environment(loader=loader)
+    template = templateEnv.get_template('page.jinja2')
+
+    mmd_diagrams = [
+        MMDiagramData('1', html.escape(mmd_flowchart)),
+        MMDiagramData('2', html.escape(mmd_flowchart1)),
+        MMDiagramData('3', html.escape(mmd_flowchart2)),
+    ]
+
+    html_content = template.render(
+        handler_method=method,
+        handler_path=path,
+        escaped_sources=escaped_sources,
+        mmd_diagrams=mmd_diagrams,
+    )
+
+    def _h() -> SerializedResponse:
+        return HTMLSerializedResponse(200, {}, html_content)
+
+    return _h
diff --git a/src/turbosloth/didoc/page.jinja2 b/src/turbosloth/didoc/page.jinja2
new file mode 100644
index 0000000..56c8781
--- /dev/null
+++ b/src/turbosloth/didoc/page.jinja2
@@ -0,0 +1,244 @@
+<!DOCTYPE html>
+<html>
+<head>
+  <meta charset="utf-8">
+  <title>Code + Mermaid</title>
+
+  <!-- Highlight.js с CDN -->
+  <link rel="stylesheet" href="https://unpkg.com/@highlightjs/cdn-assets@11.11.0/styles/atom-one-dark.min.css">
+  <script src="https://unpkg.com/@highlightjs/cdn-assets@11.11.0/highlight.min.js"></script>
+  <script src="https://unpkg.com/@highlightjs/cdn-assets@11.11.0/languages/go.min.js"></script>
+  <script>hljs.highlightAll();</script>
+
+  <!-- Mermaid.js с CDN -->
+  <script src="https://unpkg.com/mermaid/dist/mermaid.min.js " defer></script>
+
+  <script>
+  document.addEventListener('DOMContentLoaded', () => {
+    // Инициализация Mermaid
+    mermaid.initialize({ startOnLoad: false, theme: 'dark' });
+
+    // Инициализация вкладок
+    const tabs = document.querySelectorAll('.tab');
+    const tabContents = document.querySelectorAll('.tab-content');
+
+    // Активация первой вкладки
+    if (tabs.length > 0) {
+      tabs[0].classList.add('active');
+      tabContents[0].style.display = 'block';
+      mermaid.init(undefined, tabContents[0].querySelector('.mermaid'));
+    }
+
+    // Обработчик клика по вкладкам
+    tabs.forEach((tab, index) => {
+      tab.addEventListener('click', () => {
+        tabs.forEach(t => t.classList.remove('active'));
+        tabContents.forEach(c => c.style.display = 'none');
+
+        tab.classList.add('active');
+        tabContents[index].style.display = 'block';
+
+        // Инициализация Mermaid для активной вкладки, если еще не была инициализирована
+        const diagram = tabContents[index].querySelector('.mermaid');
+        if (!diagram.dataset.initialized) {
+          mermaid.init(undefined, diagram);
+          diagram.dataset.initialized = true;
+        }
+      });
+    });
+
+    // Логика перетаскивания
+    const resizer = document.getElementById('resizer');
+    const codeContainer = document.querySelector('.code-container');
+    const diagramContainer = document.querySelector('.diagram-container');
+
+    let isDragging = false;
+
+    resizer.addEventListener('mousedown', (e) => {
+      isDragging = true;
+      document.body.style.cursor = 'ew-resize';
+    });
+
+    document.addEventListener('mousemove', (e) => {
+      if (!isDragging) return;
+
+      const containerWidth = document.body.clientWidth;
+      const x = e.clientX;
+      const codeWidth = (x / containerWidth) * 100;
+
+      if (codeWidth >= 5 && codeWidth <= 95) {
+        codeContainer.style.flex = `0 0 ${codeWidth}%`;
+        diagramContainer.style.flex = `0 0 ${100 - codeWidth}%`;
+      }
+    });
+
+    document.addEventListener('mouseup', () => {
+      isDragging = false;
+      document.body.style.cursor = 'default';
+    });
+
+    document.addEventListener('mouseleave', () => {
+      isDragging = false;
+      document.body.style.cursor = 'default';
+    });
+  });
+  </script>
+
+  <style>
+  body {
+    display: flex;
+    margin: 0;
+    height: 100vh;
+    max-width: 100vw;
+    font-family: sans-serif;
+    background-color: #1e1e1e;
+    color: #e6e6e6;
+    flex-direction: column;
+  }
+
+  .topbar {
+    background-color: #2d2d2d;
+    padding: 0.5rem 1rem;
+    border-bottom: 1px solid #444;
+    font-weight: bold;
+    display: flex;
+    align-items: center;
+    gap: 0.5rem;
+  }
+
+  .topbar span {
+    color: #888;
+  }
+
+  .main-container {
+    display: flex;
+    flex: 1;
+    overflow: hidden;
+  }
+
+  .code-container, .diagram-container {
+    flex: 1;
+    overflow: auto;
+    transition: width 0.2s ease;
+  }
+
+  .code-container {
+    background-color: #2d2d2d;
+    border-right: 1px solid #444;
+    padding: 1rem;
+  }
+
+  .code-container pre {
+    background: #1e1e1e;
+    color: #dcdcdc;
+    padding: 1rem;
+    border-radius: 4px;
+    margin: 0;
+  }
+
+  .diagram-container {
+    background-color: #2d2d2d;
+    display: flex;
+    flex-direction: column;
+  }
+
+  .tabs {
+    display: flex;
+    border-bottom: 1px solid #444;
+    padding: 0 1rem;
+    background-color: #333;
+    flex-shrink: 0;
+  }
+
+  .tab {
+    padding: 0.5rem 1rem;
+    cursor: pointer;
+    color: #ccc;
+    border-bottom: 2px solid transparent;
+    transition: all 0.2s;
+    display: block;
+  }
+
+  .tab.active {
+    border-bottom: 2px solid #007acc;
+    color: #007acc;
+  }
+
+  .tab:hover {
+    background-color: #444;
+  }
+
+  .tab-content {
+    flex: 1;
+    padding: 1rem;
+    display: none;
+    overflow: auto;
+  }
+
+  .mermaid {
+    color: #e6e6e6;
+  }
+
+  .mermaid .node rect,
+  .mermaid .node circle,
+  .mermaid .node ellipse {
+    fill: #3a3a3a !important;
+    stroke: #888 !important;
+  }
+
+  .mermaid .edgePath path {
+    stroke: #ccc !important;
+  }
+
+  .resizer {
+    width: 5px;
+    background-color: #444;
+    cursor: ew-resize;
+    z-index: 10;
+  }
+
+  .resizer::after {
+    content: "";
+    position: absolute;
+    top: 0;
+    bottom: 0;
+    width: 1px;
+    background-color: #888;
+    left: 2px;
+  }
+  </style>
+</head>
+<body>
+  <div class="topbar">
+    <span style="color: #007acc;">{{ handler_method }}</span>
+    <span style="color: #888;">::</span>
+    <span>{{ handler_path }}</span>
+  </div>
+
+  <div class="main-container">
+    <div class="code-container">
+      <pre><code class="language-python">
+{{ escaped_sources }}
+      </code></pre>
+    </div>
+
+    <div class="resizer" id="resizer"></div>
+
+    <div class="diagram-container">
+      <ul class="tabs">
+        {% for diagram in mmd_diagrams %}
+          <li class="tab">{{ diagram.name }}</li>
+        {% endfor %}
+      </ul>
+
+      {% for diagram in mmd_diagrams %}
+        <div class="tab-content">
+          <div class="mermaid">
+            {{ diagram.data }}
+          </div>
+        </div>
+      {% endfor %}
+    </div>
+  </div>
+</body>
+</html>
\ No newline at end of file
diff --git a/src/turbosloth/interfaces/serialized/base.py b/src/turbosloth/interfaces/serialized/base.py
index 3cc4caf..2e1d130 100644
--- a/src/turbosloth/interfaces/serialized/base.py
+++ b/src/turbosloth/interfaces/serialized/base.py
@@ -44,6 +44,7 @@ class SerializedResponse:
     code: int
     headers: Mapping[str, str]
     body: dict[str, Any] | list[Any] | str
+    content_type: str = ''
 
     def into_basic(self, charset: str) -> BasicResponse:
         raise NotImplementedError()
diff --git a/src/turbosloth/interfaces/serialized/html.py b/src/turbosloth/interfaces/serialized/html.py
new file mode 100644
index 0000000..4e3884a
--- /dev/null
+++ b/src/turbosloth/interfaces/serialized/html.py
@@ -0,0 +1,17 @@
+from dataclasses import dataclass
+
+from case_insensitive_dict import CaseInsensitiveDict
+
+from turbosloth.interfaces.base import BasicResponse
+from .base import SerializedResponse
+
+
+@dataclass
+class HTMLSerializedResponse(SerializedResponse):
+    body: str
+    content_type = 'text/html'
+
+    def into_basic(self, charset: str) -> BasicResponse:
+        headers = CaseInsensitiveDict(self.headers).copy()
+        headers['content-type'] = self.content_type + '; charset=' + charset
+        return BasicResponse(self.code, headers, str(self.body).encode(charset))
diff --git a/src/turbosloth/interfaces/serialized/json.py b/src/turbosloth/interfaces/serialized/json.py
index 9e22a43..dba941d 100644
--- a/src/turbosloth/interfaces/serialized/json.py
+++ b/src/turbosloth/interfaces/serialized/json.py
@@ -19,8 +19,10 @@ class JsonSerializedRequest(SerializedRequest):
 
 
 class JsonSerializedResponse(SerializedResponse):
+    content_type = 'application/json'
+
     def into_basic(self, charset: str) -> BasicResponse:
         headers = CaseInsensitiveDict(self.headers).copy()
-        headers['content-type'] = 'application/json; charset=utf-8'
+        headers['content-type'] = self.content_type + '; charset=utf-8'
         b = orjson.dumps(self.body)
         return BasicResponse(self.code, headers, b)
diff --git a/src/turbosloth/interfaces/serialized/msgpack.py b/src/turbosloth/interfaces/serialized/msgpack.py
index 6978f0b..216bc73 100644
--- a/src/turbosloth/interfaces/serialized/msgpack.py
+++ b/src/turbosloth/interfaces/serialized/msgpack.py
@@ -16,8 +16,10 @@ class MessagePackSerializedRequest(SerializedRequest):
 
 
 class MessagePackSerializedResponse(SerializedResponse):
+    content_type = 'application/vnd.msgpack'
+
     def into_basic(self, charset: str) -> BasicResponse:
         headers = CaseInsensitiveDict(self.headers).copy()
-        headers['content-type'] = 'application/vnd.msgpack'
+        headers['content-type'] = self.content_type
         b = msgpack.packb(self.body)
         return BasicResponse(self.code, headers, b)
diff --git a/src/turbosloth/interfaces/serialized/text.py b/src/turbosloth/interfaces/serialized/text.py
index 9fabc4e..e8acaf1 100644
--- a/src/turbosloth/interfaces/serialized/text.py
+++ b/src/turbosloth/interfaces/serialized/text.py
@@ -12,7 +12,9 @@ class TextSerializedRequest(SerializedRequest):
 
 
 class TextSerializedResponse(SerializedResponse):
+    content_type = 'text/plain'
+
     def into_basic(self, charset: str) -> BasicResponse:
         headers = CaseInsensitiveDict(self.headers).copy()
-        headers['content-type'] = 'text/plain; charset=' + charset
+        headers['content-type'] = self.content_type + '; charset=' + charset
         return BasicResponse(self.code, headers, str(self.body).encode(charset))
diff --git a/src/turbosloth/interfaces/serialized/xml.py b/src/turbosloth/interfaces/serialized/xml.py
index af73e9e..24828a9 100644
--- a/src/turbosloth/interfaces/serialized/xml.py
+++ b/src/turbosloth/interfaces/serialized/xml.py
@@ -21,9 +21,11 @@ class XMLSerializedRequest(SerializedRequest):
 
 
 class XMLSerializedResponse(SerializedResponse):
+    content_type = 'application/xml'
+
     def into_basic(self, charset: str) -> BasicResponse:
         headers = CaseInsensitiveDict(self.headers).copy()
-        headers['content-type'] = 'application/xml; charset=' + charset
+        headers['content-type'] = self.content_type + '; charset=' + charset
 
         btxt = _into_xml(self.body)
 
diff --git a/uv.lock b/uv.lock
index 5591f88..2185010 100644
--- a/uv.lock
+++ b/uv.lock
@@ -4,15 +4,15 @@ requires-python = ">=3.13"
 
 [[package]]
 name = "breakshaft"
-version = "0.1.1.post1"
+version = "0.1.3"
 source = { registry = "https://git.nikto-b.ru/api/packages/nikto_b/pypi/simple" }
 dependencies = [
     { name = "hatchling" },
     { name = "jinja2" },
 ]
-sdist = { url = "https://git.nikto-b.ru/api/packages/nikto_b/pypi/files/breakshaft/0.1.1.post1/breakshaft-0.1.1.post1.tar.gz", hash = "sha256:0c880a57eb53122cd1d5c7d2f2520d9f536edd7fac333496da72cc0fa7bf5283" }
+sdist = { url = "https://git.nikto-b.ru/api/packages/nikto_b/pypi/files/breakshaft/0.1.3/breakshaft-0.1.3.tar.gz", hash = "sha256:2bf0154a9b0824ca8ca7d0908ea9aef78496d28ec824b677fff49cd8af2d1c56" }
 wheels = [
-    { url = "https://git.nikto-b.ru/api/packages/nikto_b/pypi/files/breakshaft/0.1.1.post1/breakshaft-0.1.1.post1-py3-none-any.whl", hash = "sha256:46895336aee55b3fbd0664a2f2deb73a04f15f1dc3ac382fa17884bad4c0f818" },
+    { url = "https://git.nikto-b.ru/api/packages/nikto_b/pypi/files/breakshaft/0.1.3/breakshaft-0.1.3-py3-none-any.whl", hash = "sha256:f9693d529a4c5af3f8e196bac191d7549eaf1b4ec601b63db6c1caae38bcec13" },
 ]
 
 [[package]]
@@ -347,6 +347,7 @@ source = { editable = "." }
 dependencies = [
     { name = "breakshaft" },
     { name = "case-insensitive-dictionary" },
+    { name = "jinja2" },
     { name = "megasniff" },
     { name = "mypy" },
 ]
@@ -380,8 +381,9 @@ xml = [
 
 [package.metadata]
 requires-dist = [
-    { name = "breakshaft", specifier = ">=0.1.1", index = "https://git.nikto-b.ru/api/packages/nikto_b/pypi/simple" },
+    { name = "breakshaft", specifier = ">=0.1.3", index = "https://git.nikto-b.ru/api/packages/nikto_b/pypi/simple" },
     { name = "case-insensitive-dictionary", specifier = ">=0.2.1" },
+    { name = "jinja2", specifier = ">=3.1.6" },
     { name = "megasniff", specifier = ">=0.2.0", index = "https://git.nikto-b.ru/api/packages/nikto_b/pypi/simple" },
     { name = "mypy", specifier = ">=1.17.0" },
 ]