diff --git a/stubs/flake8-simplify/METADATA.toml b/stubs/flake8-simplify/METADATA.toml
index 975ef0a56295..33165aaa6aac 100644
--- a/stubs/flake8-simplify/METADATA.toml
+++ b/stubs/flake8-simplify/METADATA.toml
@@ -1,6 +1,2 @@
 version = "0.21.*"
 upstream_repository = "https://github.com/MartinThoma/flake8-simplify"
-partial_stub = true
-
-[tool.stubtest]
-ignore_missing_stub = true
diff --git a/stubs/flake8-simplify/flake8_simplify/__init__.pyi b/stubs/flake8-simplify/flake8_simplify/__init__.pyi
index c1831fa38365..5c2059f3ca1c 100644
--- a/stubs/flake8-simplify/flake8_simplify/__init__.pyi
+++ b/stubs/flake8-simplify/flake8_simplify/__init__.pyi
@@ -1,9 +1,30 @@
 import ast
+import logging
 from collections.abc import Generator
 from typing import Any, ClassVar
 
+logger: logging.Logger
+
+class Visitor(ast.NodeVisitor):
+    def __init__(self) -> None: ...
+    def visit_Assign(self, node: ast.Assign) -> Any: ...
+    def visit_Call(self, node: ast.Call) -> Any: ...
+    def visit_With(self, node: ast.With) -> Any: ...
+    def visit_Expr(self, node: ast.Expr) -> None: ...
+    def visit_BoolOp(self, node: ast.BoolOp) -> None: ...
+    def visit_If(self, node: ast.If) -> None: ...
+    def visit_For(self, node: ast.For) -> None: ...
+    def visit_Subscript(self, node: ast.Subscript) -> None: ...
+    def visit_Try(self, node: ast.Try) -> None: ...
+    def visit_UnaryOp(self, node_v: ast.UnaryOp) -> None: ...
+    def visit_IfExp(self, node: ast.IfExp) -> None: ...
+    def visit_Compare(self, node: ast.Compare) -> None: ...
+    def visit_ClassDef(self, node: ast.ClassDef) -> None: ...
+
 class Plugin:
     name: ClassVar[str]
     version: ClassVar[str]
     def __init__(self, tree: ast.AST) -> None: ...
     def run(self) -> Generator[tuple[int, int, str, type[Any]], None, None]: ...
+
+def add_meta(root: ast.AST, level: int = 0) -> None: ...
diff --git a/stubs/flake8-simplify/flake8_simplify/constants.pyi b/stubs/flake8-simplify/flake8_simplify/constants.pyi
new file mode 100644
index 000000000000..66c47b6ad841
--- /dev/null
+++ b/stubs/flake8-simplify/flake8_simplify/constants.pyi
@@ -0,0 +1,3 @@
+BOOL_CONST_TYPES: tuple[type, ...]
+AST_CONST_TYPES: tuple[type, ...]
+STR_TYPES: tuple[type, ...]
diff --git a/stubs/flake8-simplify/flake8_simplify/rules/__init__.pyi b/stubs/flake8-simplify/flake8_simplify/rules/__init__.pyi
new file mode 100644
index 000000000000..e69de29bb2d1
diff --git a/stubs/flake8-simplify/flake8_simplify/rules/ast_assign.pyi b/stubs/flake8-simplify/flake8_simplify/rules/ast_assign.pyi
new file mode 100644
index 000000000000..019ac9f499a7
--- /dev/null
+++ b/stubs/flake8-simplify/flake8_simplify/rules/ast_assign.pyi
@@ -0,0 +1,6 @@
+import ast
+
+from flake8_simplify.utils import Assign
+
+def get_sim904(node: ast.Assign) -> list[tuple[int, int, str]]: ...
+def get_sim909(node: Assign) -> list[tuple[int, int, str]]: ...
diff --git a/stubs/flake8-simplify/flake8_simplify/rules/ast_bool_op.pyi b/stubs/flake8-simplify/flake8_simplify/rules/ast_bool_op.pyi
new file mode 100644
index 000000000000..d130dceae322
--- /dev/null
+++ b/stubs/flake8-simplify/flake8_simplify/rules/ast_bool_op.pyi
@@ -0,0 +1,8 @@
+import ast
+
+def get_sim101(node: ast.BoolOp) -> list[tuple[int, int, str]]: ...
+def get_sim109(node: ast.BoolOp) -> list[tuple[int, int, str]]: ...
+def get_sim220(node: ast.BoolOp) -> list[tuple[int, int, str]]: ...
+def get_sim221(node: ast.BoolOp) -> list[tuple[int, int, str]]: ...
+def get_sim222(node: ast.BoolOp) -> list[tuple[int, int, str]]: ...
+def get_sim223(node: ast.BoolOp) -> list[tuple[int, int, str]]: ...
diff --git a/stubs/flake8-simplify/flake8_simplify/rules/ast_call.pyi b/stubs/flake8-simplify/flake8_simplify/rules/ast_call.pyi
new file mode 100644
index 000000000000..d8b62cfa427d
--- /dev/null
+++ b/stubs/flake8-simplify/flake8_simplify/rules/ast_call.pyi
@@ -0,0 +1,13 @@
+import ast
+import logging
+
+from flake8_simplify.utils import Call
+
+logger: logging.Logger
+
+def get_sim115(node: Call) -> list[tuple[int, int, str]]: ...
+def get_sim901(node: ast.Call) -> list[tuple[int, int, str]]: ...
+def get_sim905(node: ast.Call) -> list[tuple[int, int, str]]: ...
+def get_sim906(node: ast.Call) -> list[tuple[int, int, str]]: ...
+def get_sim910(node: Call) -> list[tuple[int, int, str]]: ...
+def get_sim911(node: ast.AST) -> list[tuple[int, int, str]]: ...
diff --git a/stubs/flake8-simplify/flake8_simplify/rules/ast_classdef.pyi b/stubs/flake8-simplify/flake8_simplify/rules/ast_classdef.pyi
new file mode 100644
index 000000000000..09dc22b3595f
--- /dev/null
+++ b/stubs/flake8-simplify/flake8_simplify/rules/ast_classdef.pyi
@@ -0,0 +1,3 @@
+import ast
+
+def get_sim120(node: ast.ClassDef) -> list[tuple[int, int, str]]: ...
diff --git a/stubs/flake8-simplify/flake8_simplify/rules/ast_compare.pyi b/stubs/flake8-simplify/flake8_simplify/rules/ast_compare.pyi
new file mode 100644
index 000000000000..0a7b816a5e3c
--- /dev/null
+++ b/stubs/flake8-simplify/flake8_simplify/rules/ast_compare.pyi
@@ -0,0 +1,4 @@
+import ast
+
+def get_sim118(node: ast.Compare) -> list[tuple[int, int, str]]: ...
+def get_sim300(node: ast.Compare) -> list[tuple[int, int, str]]: ...
diff --git a/stubs/flake8-simplify/flake8_simplify/rules/ast_expr.pyi b/stubs/flake8-simplify/flake8_simplify/rules/ast_expr.pyi
new file mode 100644
index 000000000000..af53ac0309d8
--- /dev/null
+++ b/stubs/flake8-simplify/flake8_simplify/rules/ast_expr.pyi
@@ -0,0 +1,3 @@
+import ast
+
+def get_sim112(node: ast.Expr) -> list[tuple[int, int, str]]: ...
diff --git a/stubs/flake8-simplify/flake8_simplify/rules/ast_for.pyi b/stubs/flake8-simplify/flake8_simplify/rules/ast_for.pyi
new file mode 100644
index 000000000000..235c7fd2b287
--- /dev/null
+++ b/stubs/flake8-simplify/flake8_simplify/rules/ast_for.pyi
@@ -0,0 +1,7 @@
+import ast
+
+from flake8_simplify.utils import For
+
+def get_sim104(node: ast.For) -> list[tuple[int, int, str]]: ...
+def get_sim110_sim111(node: ast.For) -> list[tuple[int, int, str]]: ...
+def get_sim113(node: For) -> list[tuple[int, int, str]]: ...
diff --git a/stubs/flake8-simplify/flake8_simplify/rules/ast_if.pyi b/stubs/flake8-simplify/flake8_simplify/rules/ast_if.pyi
new file mode 100644
index 000000000000..65121cfcef51
--- /dev/null
+++ b/stubs/flake8-simplify/flake8_simplify/rules/ast_if.pyi
@@ -0,0 +1,11 @@
+import ast
+
+from flake8_simplify.utils import If
+
+def get_sim102(node: ast.If) -> list[tuple[int, int, str]]: ...
+def get_sim103(node: ast.If) -> list[tuple[int, int, str]]: ...
+def get_sim108(node: If) -> list[tuple[int, int, str]]: ...
+def get_sim114(node: ast.If) -> list[tuple[int, int, str]]: ...
+def get_sim116(node: ast.If) -> list[tuple[int, int, str]]: ...
+def get_sim908(node: ast.If) -> list[tuple[int, int, str]]: ...
+def get_sim401(node: ast.If) -> list[tuple[int, int, str]]: ...
diff --git a/stubs/flake8-simplify/flake8_simplify/rules/ast_ifexp.pyi b/stubs/flake8-simplify/flake8_simplify/rules/ast_ifexp.pyi
new file mode 100644
index 000000000000..8a37a0c6a5ab
--- /dev/null
+++ b/stubs/flake8-simplify/flake8_simplify/rules/ast_ifexp.pyi
@@ -0,0 +1,5 @@
+import ast
+
+def get_sim210(node: ast.IfExp) -> list[tuple[int, int, str]]: ...
+def get_sim211(node: ast.IfExp) -> list[tuple[int, int, str]]: ...
+def get_sim212(node: ast.IfExp) -> list[tuple[int, int, str]]: ...
diff --git a/stubs/flake8-simplify/flake8_simplify/rules/ast_subscript.pyi b/stubs/flake8-simplify/flake8_simplify/rules/ast_subscript.pyi
new file mode 100644
index 000000000000..eb2fa207b32b
--- /dev/null
+++ b/stubs/flake8-simplify/flake8_simplify/rules/ast_subscript.pyi
@@ -0,0 +1,3 @@
+import ast
+
+def get_sim907(node: ast.Subscript) -> list[tuple[int, int, str]]: ...
diff --git a/stubs/flake8-simplify/flake8_simplify/rules/ast_try.pyi b/stubs/flake8-simplify/flake8_simplify/rules/ast_try.pyi
new file mode 100644
index 000000000000..9156100ebbe1
--- /dev/null
+++ b/stubs/flake8-simplify/flake8_simplify/rules/ast_try.pyi
@@ -0,0 +1,4 @@
+import ast
+
+def get_sim105(node: ast.Try) -> list[tuple[int, int, str]]: ...
+def get_sim107(node: ast.Try) -> list[tuple[int, int, str]]: ...
diff --git a/stubs/flake8-simplify/flake8_simplify/rules/ast_unary_op.pyi b/stubs/flake8-simplify/flake8_simplify/rules/ast_unary_op.pyi
new file mode 100644
index 000000000000..93603e0576f1
--- /dev/null
+++ b/stubs/flake8-simplify/flake8_simplify/rules/ast_unary_op.pyi
@@ -0,0 +1,8 @@
+import ast
+
+from flake8_simplify.utils import UnaryOp
+
+def get_sim201(node: UnaryOp) -> list[tuple[int, int, str]]: ...
+def get_sim202(node: UnaryOp) -> list[tuple[int, int, str]]: ...
+def get_sim203(node: UnaryOp) -> list[tuple[int, int, str]]: ...
+def get_sim208(node: ast.UnaryOp) -> list[tuple[int, int, str]]: ...
diff --git a/stubs/flake8-simplify/flake8_simplify/rules/ast_with.pyi b/stubs/flake8-simplify/flake8_simplify/rules/ast_with.pyi
new file mode 100644
index 000000000000..310080e7ec0d
--- /dev/null
+++ b/stubs/flake8-simplify/flake8_simplify/rules/ast_with.pyi
@@ -0,0 +1,3 @@
+import ast
+
+def get_sim117(node: ast.With) -> list[tuple[int, int, str]]: ...
diff --git a/stubs/flake8-simplify/flake8_simplify/utils.pyi b/stubs/flake8-simplify/flake8_simplify/utils.pyi
new file mode 100644
index 000000000000..3f4ea1c6524e
--- /dev/null
+++ b/stubs/flake8-simplify/flake8_simplify/utils.pyi
@@ -0,0 +1,37 @@
+import ast
+from _typeshed import Incomplete
+
+class UnaryOp(ast.UnaryOp):
+    parent: ast.Expr
+    def __init__(self, orig: ast.UnaryOp) -> None: ...
+
+class Call(ast.Call):
+    parent: ast.Expr
+    def __init__(self, orig: ast.Call) -> None: ...
+
+class If(ast.If):
+    parent: ast.Expr
+    def __init__(self, orig: ast.If) -> None: ...
+
+class For(ast.For):
+    parent: ast.AST
+    previous_sibling: Incomplete
+    def __init__(self, orig: ast.For) -> None: ...
+
+class Assign(ast.Assign):
+    parent: ast.AST
+    previous_sibling: Incomplete
+    def __init__(self, orig: ast.Assign) -> None: ...
+
+def to_source(node: ast.expr | ast.Expr | ast.withitem | ast.slice | ast.Assign | None) -> str: ...
+def strip_parenthesis(string: str) -> str: ...
+def strip_triple_quotes(string: str) -> str: ...
+def use_double_quotes(string: str) -> str: ...
+def is_body_same(body1: list[ast.stmt], body2: list[ast.stmt]) -> bool: ...
+def is_stmt_equal(a: ast.stmt, b: ast.stmt) -> bool: ...
+def get_if_body_pairs(node: ast.If) -> list[tuple[ast.expr, list[ast.stmt]]]: ...
+def is_constant_increase(expr: ast.AugAssign) -> bool: ...
+def is_exception_check(node: ast.If) -> bool: ...
+def is_same_expression(a: ast.expr, b: ast.expr) -> bool: ...
+def expression_uses_variable(expr: ast.expr, var: str) -> bool: ...
+def body_contains_continue(stmts: list[ast.stmt]) -> bool: ...