From 746fed3c17e9a7378b25c25f7bd53dfb61103798 Mon Sep 17 00:00:00 2001
From: "stainless-app[bot]"
 <142633134+stainless-app[bot]@users.noreply.github.com>
Date: Wed, 18 Mar 2026 22:30:14 +0000
Subject: [PATCH 1/6] codegen metadata

---
 .stats.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.stats.yml b/.stats.yml
index fa46781..6d0439a 100644
--- a/.stats.yml
+++ b/.stats.yml
@@ -1,4 +1,4 @@
 configured_endpoints: 30
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/hyperspell%2Fhyperspell-b1f2b7cb843e6f4e6123e838ce29cbbaea0a48b1a72057632de1d0d21727c5d8.yml
-openapi_spec_hash: 21a354f587a2fe19797860c7b6da81a9
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/hyperspell%2Fhyperspell-74db7f2f52f21dd91ef3652895501f0a82008f699a5d0b49a58059609624b4dc.yml
+openapi_spec_hash: 58616ba29b9ef5d0e0615b766bfd1a93
 config_hash: 0ed970a9634b33d0af471738b478740d

From b2b3ca2749930db6558bbe5bc3bb1ce4adadfe0e Mon Sep 17 00:00:00 2001
From: "stainless-app[bot]"
 <142633134+stainless-app[bot]@users.noreply.github.com>
Date: Fri, 20 Mar 2026 03:51:10 +0000
Subject: [PATCH 2/6] fix: sanitize endpoint path params

---
 src/hyperspell/_utils/__init__.py             |   1 +
 src/hyperspell/_utils/_path.py                | 127 ++++++++++++++++++
 src/hyperspell/resources/connections.py       |   5 +-
 src/hyperspell/resources/evaluate.py          |  14 +-
 src/hyperspell/resources/folders.py           |  26 ++--
 .../resources/integrations/integrations.py    |   6 +-
 src/hyperspell/resources/memories.py          |  14 +-
 tests/test_utils/test_path.py                 |  89 ++++++++++++
 8 files changed, 254 insertions(+), 28 deletions(-)
 create mode 100644 src/hyperspell/_utils/_path.py
 create mode 100644 tests/test_utils/test_path.py

diff --git a/src/hyperspell/_utils/__init__.py b/src/hyperspell/_utils/__init__.py
index dc64e29..10cb66d 100644
--- a/src/hyperspell/_utils/__init__.py
+++ b/src/hyperspell/_utils/__init__.py
@@ -1,3 +1,4 @@
+from ._path import path_template as path_template
 from ._sync import asyncify as asyncify
 from ._proxy import LazyProxy as LazyProxy
 from ._utils import (
diff --git a/src/hyperspell/_utils/_path.py b/src/hyperspell/_utils/_path.py
new file mode 100644
index 0000000..4d6e1e4
--- /dev/null
+++ b/src/hyperspell/_utils/_path.py
@@ -0,0 +1,127 @@
+from __future__ import annotations
+
+import re
+from typing import (
+    Any,
+    Mapping,
+    Callable,
+)
+from urllib.parse import quote
+
+# Matches '.' or '..' where each dot is either literal or percent-encoded (%2e / %2E).
+_DOT_SEGMENT_RE = re.compile(r"^(?:\.|%2[eE]){1,2}$")
+
+_PLACEHOLDER_RE = re.compile(r"\{(\w+)\}")
+
+
+def _quote_path_segment_part(value: str) -> str:
+    """Percent-encode `value` for use in a URI path segment.
+
+    Considers characters not in `pchar` set from RFC 3986 §3.3 to be unsafe.
+    https://datatracker.ietf.org/doc/html/rfc3986#section-3.3
+    """
+    # quote() already treats unreserved characters (letters, digits, and -._~)
+    # as safe, so we only need to add sub-delims, ':', and '@'.
+    # Notably, unlike the default `safe` for quote(), / is unsafe and must be quoted.
+    return quote(value, safe="!$&'()*+,;=:@")
+
+
+def _quote_query_part(value: str) -> str:
+    """Percent-encode `value` for use in a URI query string.
+
+    Considers &, = and characters not in `query` set from RFC 3986 §3.4 to be unsafe.
+    https://datatracker.ietf.org/doc/html/rfc3986#section-3.4
+    """
+    return quote(value, safe="!$'()*+,;:@/?")
+
+
+def _quote_fragment_part(value: str) -> str:
+    """Percent-encode `value` for use in a URI fragment.
+
+    Considers characters not in `fragment` set from RFC 3986 §3.5 to be unsafe.
+    https://datatracker.ietf.org/doc/html/rfc3986#section-3.5
+    """
+    return quote(value, safe="!$&'()*+,;=:@/?")
+
+
+def _interpolate(
+    template: str,
+    values: Mapping[str, Any],
+    quoter: Callable[[str], str],
+) -> str:
+    """Replace {name} placeholders in `template`, quoting each value with `quoter`.
+
+    Placeholder names are looked up in `values`.
+
+    Raises:
+        KeyError: If a placeholder is not found in `values`.
+    """
+    # re.split with a capturing group returns alternating
+    # [text, name, text, name, ..., text] elements.
+    parts = _PLACEHOLDER_RE.split(template)
+
+    for i in range(1, len(parts), 2):
+        name = parts[i]
+        if name not in values:
+            raise KeyError(f"a value for placeholder {{{name}}} was not provided")
+        val = values[name]
+        if val is None:
+            parts[i] = "null"
+        elif isinstance(val, bool):
+            parts[i] = "true" if val else "false"
+        else:
+            parts[i] = quoter(str(values[name]))
+
+    return "".join(parts)
+
+
+def path_template(template: str, /, **kwargs: Any) -> str:
+    """Interpolate {name} placeholders in `template` from keyword arguments.
+
+    Args:
+        template: The template string containing {name} placeholders.
+        **kwargs: Keyword arguments to interpolate into the template.
+
+    Returns:
+        The template with placeholders interpolated and percent-encoded.
+
+        Safe characters for percent-encoding are dependent on the URI component.
+        Placeholders in path and fragment portions are percent-encoded where the `segment`
+        and `fragment` sets from RFC 3986 respectively are considered safe.
+        Placeholders in the query portion are percent-encoded where the `query` set from
+        RFC 3986 §3.3 is considered safe except for = and & characters.
+
+    Raises:
+        KeyError: If a placeholder is not found in `kwargs`.
+        ValueError: If resulting path contains /./ or /../ segments (including percent-encoded dot-segments).
+    """
+    # Split the template into path, query, and fragment portions.
+    fragment_template: str | None = None
+    query_template: str | None = None
+
+    rest = template
+    if "#" in rest:
+        rest, fragment_template = rest.split("#", 1)
+    if "?" in rest:
+        rest, query_template = rest.split("?", 1)
+    path_template = rest
+
+    # Interpolate each portion with the appropriate quoting rules.
+    path_result = _interpolate(path_template, kwargs, _quote_path_segment_part)
+
+    # Reject dot-segments (. and ..) in the final assembled path.  The check
+    # runs after interpolation so that adjacent placeholders or a mix of static
+    # text and placeholders that together form a dot-segment are caught.
+    # Also reject percent-encoded dot-segments to protect against incorrectly
+    # implemented normalization in servers/proxies.
+    for segment in path_result.split("/"):
+        if _DOT_SEGMENT_RE.match(segment):
+            raise ValueError(f"Constructed path {path_result!r} contains dot-segment {segment!r} which is not allowed")
+
+    result = path_result
+    if query_template is not None:
+        result += "?" + _interpolate(query_template, kwargs, _quote_query_part)
+    if fragment_template is not None:
+        result += "#" + _interpolate(fragment_template, kwargs, _quote_fragment_part)
+
+    return result
diff --git a/src/hyperspell/resources/connections.py b/src/hyperspell/resources/connections.py
index 98799ee..f266c68 100644
--- a/src/hyperspell/resources/connections.py
+++ b/src/hyperspell/resources/connections.py
@@ -5,6 +5,7 @@
 import httpx
 
 from .._types import Body, Query, Headers, NotGiven, not_given
+from .._utils import path_template
 from .._compat import cached_property
 from .._resource import SyncAPIResource, AsyncAPIResource
 from .._response import (
@@ -86,7 +87,7 @@ def revoke(
         if not connection_id:
             raise ValueError(f"Expected a non-empty value for `connection_id` but received {connection_id!r}")
         return self._delete(
-            f"/connections/{connection_id}/revoke",
+            path_template("/connections/{connection_id}/revoke", connection_id=connection_id),
             options=make_request_options(
                 extra_headers=extra_headers, extra_query=extra_query, extra_body=extra_body, timeout=timeout
             ),
@@ -160,7 +161,7 @@ async def revoke(
         if not connection_id:
             raise ValueError(f"Expected a non-empty value for `connection_id` but received {connection_id!r}")
         return await self._delete(
-            f"/connections/{connection_id}/revoke",
+            path_template("/connections/{connection_id}/revoke", connection_id=connection_id),
             options=make_request_options(
                 extra_headers=extra_headers, extra_query=extra_query, extra_body=extra_body, timeout=timeout
             ),
diff --git a/src/hyperspell/resources/evaluate.py b/src/hyperspell/resources/evaluate.py
index 58dc4bf..02b1c4d 100644
--- a/src/hyperspell/resources/evaluate.py
+++ b/src/hyperspell/resources/evaluate.py
@@ -8,7 +8,7 @@
 
 from ..types import evaluate_score_query_params, evaluate_score_highlight_params
 from .._types import Body, Omit, Query, Headers, NotGiven, omit, not_given
-from .._utils import maybe_transform, async_maybe_transform
+from .._utils import path_template, maybe_transform, async_maybe_transform
 from .._compat import cached_property
 from .._resource import SyncAPIResource, AsyncAPIResource
 from .._response import (
@@ -71,7 +71,7 @@ def get_query(
         if not query_id:
             raise ValueError(f"Expected a non-empty value for `query_id` but received {query_id!r}")
         return self._get(
-            f"/evaluate/query/{query_id}",
+            path_template("/evaluate/query/{query_id}", query_id=query_id),
             options=make_request_options(
                 extra_headers=extra_headers, extra_query=extra_query, extra_body=extra_body, timeout=timeout
             ),
@@ -110,7 +110,7 @@ def score_highlight(
         if not highlight_id:
             raise ValueError(f"Expected a non-empty value for `highlight_id` but received {highlight_id!r}")
         return self._post(
-            f"/evaluate/highlight/{highlight_id}",
+            path_template("/evaluate/highlight/{highlight_id}", highlight_id=highlight_id),
             body=maybe_transform(
                 {
                     "comment": comment,
@@ -153,7 +153,7 @@ def score_query(
         if not query_id:
             raise ValueError(f"Expected a non-empty value for `query_id` but received {query_id!r}")
         return self._post(
-            f"/evaluate/query/{query_id}",
+            path_template("/evaluate/query/{query_id}", query_id=query_id),
             body=maybe_transform({"score": score}, evaluate_score_query_params.EvaluateScoreQueryParams),
             options=make_request_options(
                 extra_headers=extra_headers, extra_query=extra_query, extra_body=extra_body, timeout=timeout
@@ -208,7 +208,7 @@ async def get_query(
         if not query_id:
             raise ValueError(f"Expected a non-empty value for `query_id` but received {query_id!r}")
         return await self._get(
-            f"/evaluate/query/{query_id}",
+            path_template("/evaluate/query/{query_id}", query_id=query_id),
             options=make_request_options(
                 extra_headers=extra_headers, extra_query=extra_query, extra_body=extra_body, timeout=timeout
             ),
@@ -247,7 +247,7 @@ async def score_highlight(
         if not highlight_id:
             raise ValueError(f"Expected a non-empty value for `highlight_id` but received {highlight_id!r}")
         return await self._post(
-            f"/evaluate/highlight/{highlight_id}",
+            path_template("/evaluate/highlight/{highlight_id}", highlight_id=highlight_id),
             body=await async_maybe_transform(
                 {
                     "comment": comment,
@@ -290,7 +290,7 @@ async def score_query(
         if not query_id:
             raise ValueError(f"Expected a non-empty value for `query_id` but received {query_id!r}")
         return await self._post(
-            f"/evaluate/query/{query_id}",
+            path_template("/evaluate/query/{query_id}", query_id=query_id),
             body=await async_maybe_transform({"score": score}, evaluate_score_query_params.EvaluateScoreQueryParams),
             options=make_request_options(
                 extra_headers=extra_headers, extra_query=extra_query, extra_body=extra_body, timeout=timeout
diff --git a/src/hyperspell/resources/folders.py b/src/hyperspell/resources/folders.py
index 9ebf845..ed34161 100644
--- a/src/hyperspell/resources/folders.py
+++ b/src/hyperspell/resources/folders.py
@@ -9,7 +9,7 @@
 
 from ..types import folder_list_params, folder_set_policies_params
 from .._types import Body, Omit, Query, Headers, NotGiven, omit, not_given
-from .._utils import maybe_transform, async_maybe_transform
+from .._utils import path_template, maybe_transform, async_maybe_transform
 from .._compat import cached_property
 from .._resource import SyncAPIResource, AsyncAPIResource
 from .._response import (
@@ -79,7 +79,7 @@ def list(
         if not connection_id:
             raise ValueError(f"Expected a non-empty value for `connection_id` but received {connection_id!r}")
         return self._get(
-            f"/connections/{connection_id}/folders",
+            path_template("/connections/{connection_id}/folders", connection_id=connection_id),
             options=make_request_options(
                 extra_headers=extra_headers,
                 extra_query=extra_query,
@@ -119,7 +119,11 @@ def delete_policy(
         if not policy_id:
             raise ValueError(f"Expected a non-empty value for `policy_id` but received {policy_id!r}")
         return self._delete(
-            f"/connections/{connection_id}/folder-policies/{policy_id}",
+            path_template(
+                "/connections/{connection_id}/folder-policies/{policy_id}",
+                connection_id=connection_id,
+                policy_id=policy_id,
+            ),
             options=make_request_options(
                 extra_headers=extra_headers, extra_query=extra_query, extra_body=extra_body, timeout=timeout
             ),
@@ -152,7 +156,7 @@ def list_policies(
         if not connection_id:
             raise ValueError(f"Expected a non-empty value for `connection_id` but received {connection_id!r}")
         return self._get(
-            f"/connections/{connection_id}/folder-policies",
+            path_template("/connections/{connection_id}/folder-policies", connection_id=connection_id),
             options=make_request_options(
                 extra_headers=extra_headers, extra_query=extra_query, extra_body=extra_body, timeout=timeout
             ),
@@ -200,7 +204,7 @@ def set_policies(
         if not connection_id:
             raise ValueError(f"Expected a non-empty value for `connection_id` but received {connection_id!r}")
         return self._post(
-            f"/connections/{connection_id}/folder-policies",
+            path_template("/connections/{connection_id}/folder-policies", connection_id=connection_id),
             body=maybe_transform(
                 {
                     "provider_folder_id": provider_folder_id,
@@ -270,7 +274,7 @@ async def list(
         if not connection_id:
             raise ValueError(f"Expected a non-empty value for `connection_id` but received {connection_id!r}")
         return await self._get(
-            f"/connections/{connection_id}/folders",
+            path_template("/connections/{connection_id}/folders", connection_id=connection_id),
             options=make_request_options(
                 extra_headers=extra_headers,
                 extra_query=extra_query,
@@ -310,7 +314,11 @@ async def delete_policy(
         if not policy_id:
             raise ValueError(f"Expected a non-empty value for `policy_id` but received {policy_id!r}")
         return await self._delete(
-            f"/connections/{connection_id}/folder-policies/{policy_id}",
+            path_template(
+                "/connections/{connection_id}/folder-policies/{policy_id}",
+                connection_id=connection_id,
+                policy_id=policy_id,
+            ),
             options=make_request_options(
                 extra_headers=extra_headers, extra_query=extra_query, extra_body=extra_body, timeout=timeout
             ),
@@ -343,7 +351,7 @@ async def list_policies(
         if not connection_id:
             raise ValueError(f"Expected a non-empty value for `connection_id` but received {connection_id!r}")
         return await self._get(
-            f"/connections/{connection_id}/folder-policies",
+            path_template("/connections/{connection_id}/folder-policies", connection_id=connection_id),
             options=make_request_options(
                 extra_headers=extra_headers, extra_query=extra_query, extra_body=extra_body, timeout=timeout
             ),
@@ -391,7 +399,7 @@ async def set_policies(
         if not connection_id:
             raise ValueError(f"Expected a non-empty value for `connection_id` but received {connection_id!r}")
         return await self._post(
-            f"/connections/{connection_id}/folder-policies",
+            path_template("/connections/{connection_id}/folder-policies", connection_id=connection_id),
             body=await async_maybe_transform(
                 {
                     "provider_folder_id": provider_folder_id,
diff --git a/src/hyperspell/resources/integrations/integrations.py b/src/hyperspell/resources/integrations/integrations.py
index 09eb99a..72f1d33 100644
--- a/src/hyperspell/resources/integrations/integrations.py
+++ b/src/hyperspell/resources/integrations/integrations.py
@@ -16,7 +16,7 @@
 )
 from ...types import integration_connect_params
 from ..._types import Body, Omit, Query, Headers, NotGiven, omit, not_given
-from ..._utils import maybe_transform, async_maybe_transform
+from ..._utils import path_template, maybe_transform, async_maybe_transform
 from ..._compat import cached_property
 from ..._resource import SyncAPIResource, AsyncAPIResource
 from ..._response import (
@@ -126,7 +126,7 @@ def connect(
         if not integration_id:
             raise ValueError(f"Expected a non-empty value for `integration_id` but received {integration_id!r}")
         return self._get(
-            f"/integrations/{integration_id}/connect",
+            path_template("/integrations/{integration_id}/connect", integration_id=integration_id),
             options=make_request_options(
                 extra_headers=extra_headers,
                 extra_query=extra_query,
@@ -218,7 +218,7 @@ async def connect(
         if not integration_id:
             raise ValueError(f"Expected a non-empty value for `integration_id` but received {integration_id!r}")
         return await self._get(
-            f"/integrations/{integration_id}/connect",
+            path_template("/integrations/{integration_id}/connect", integration_id=integration_id),
             options=make_request_options(
                 extra_headers=extra_headers,
                 extra_query=extra_query,
diff --git a/src/hyperspell/resources/memories.py b/src/hyperspell/resources/memories.py
index 83b15da..92ad50c 100644
--- a/src/hyperspell/resources/memories.py
+++ b/src/hyperspell/resources/memories.py
@@ -17,7 +17,7 @@
     memory_add_bulk_params,
 )
 from .._types import Body, Omit, Query, Headers, NotGiven, FileTypes, omit, not_given
-from .._utils import extract_files, maybe_transform, deepcopy_minimal, async_maybe_transform
+from .._utils import extract_files, path_template, maybe_transform, deepcopy_minimal, async_maybe_transform
 from .._compat import cached_property
 from .._resource import SyncAPIResource, AsyncAPIResource
 from .._response import (
@@ -122,7 +122,7 @@ def update(
         if not resource_id:
             raise ValueError(f"Expected a non-empty value for `resource_id` but received {resource_id!r}")
         return self._post(
-            f"/memories/update/{source}/{resource_id}",
+            path_template("/memories/update/{source}/{resource_id}", source=source, resource_id=resource_id),
             body=maybe_transform(
                 {
                     "collection": collection,
@@ -276,7 +276,7 @@ def delete(
         if not resource_id:
             raise ValueError(f"Expected a non-empty value for `resource_id` but received {resource_id!r}")
         return self._delete(
-            f"/memories/delete/{source}/{resource_id}",
+            path_template("/memories/delete/{source}/{resource_id}", source=source, resource_id=resource_id),
             options=make_request_options(
                 extra_headers=extra_headers, extra_query=extra_query, extra_body=extra_body, timeout=timeout
             ),
@@ -435,7 +435,7 @@ def get(
         if not resource_id:
             raise ValueError(f"Expected a non-empty value for `resource_id` but received {resource_id!r}")
         return self._get(
-            f"/memories/get/{source}/{resource_id}",
+            path_template("/memories/get/{source}/{resource_id}", source=source, resource_id=resource_id),
             options=make_request_options(
                 extra_headers=extra_headers, extra_query=extra_query, extra_body=extra_body, timeout=timeout
             ),
@@ -679,7 +679,7 @@ async def update(
         if not resource_id:
             raise ValueError(f"Expected a non-empty value for `resource_id` but received {resource_id!r}")
         return await self._post(
-            f"/memories/update/{source}/{resource_id}",
+            path_template("/memories/update/{source}/{resource_id}", source=source, resource_id=resource_id),
             body=await async_maybe_transform(
                 {
                     "collection": collection,
@@ -833,7 +833,7 @@ async def delete(
         if not resource_id:
             raise ValueError(f"Expected a non-empty value for `resource_id` but received {resource_id!r}")
         return await self._delete(
-            f"/memories/delete/{source}/{resource_id}",
+            path_template("/memories/delete/{source}/{resource_id}", source=source, resource_id=resource_id),
             options=make_request_options(
                 extra_headers=extra_headers, extra_query=extra_query, extra_body=extra_body, timeout=timeout
             ),
@@ -992,7 +992,7 @@ async def get(
         if not resource_id:
             raise ValueError(f"Expected a non-empty value for `resource_id` but received {resource_id!r}")
         return await self._get(
-            f"/memories/get/{source}/{resource_id}",
+            path_template("/memories/get/{source}/{resource_id}", source=source, resource_id=resource_id),
             options=make_request_options(
                 extra_headers=extra_headers, extra_query=extra_query, extra_body=extra_body, timeout=timeout
             ),
diff --git a/tests/test_utils/test_path.py b/tests/test_utils/test_path.py
new file mode 100644
index 0000000..b626914
--- /dev/null
+++ b/tests/test_utils/test_path.py
@@ -0,0 +1,89 @@
+from __future__ import annotations
+
+from typing import Any
+
+import pytest
+
+from hyperspell._utils._path import path_template
+
+
+@pytest.mark.parametrize(
+    "template, kwargs, expected",
+    [
+        ("/v1/{id}", dict(id="abc"), "/v1/abc"),
+        ("/v1/{a}/{b}", dict(a="x", b="y"), "/v1/x/y"),
+        ("/v1/{a}{b}/path/{c}?val={d}#{e}", dict(a="x", b="y", c="z", d="u", e="v"), "/v1/xy/path/z?val=u#v"),
+        ("/{w}/{w}", dict(w="echo"), "/echo/echo"),
+        ("/v1/static", {}, "/v1/static"),
+        ("", {}, ""),
+        ("/v1/?q={n}&count=10", dict(n=42), "/v1/?q=42&count=10"),
+        ("/v1/{v}", dict(v=None), "/v1/null"),
+        ("/v1/{v}", dict(v=True), "/v1/true"),
+        ("/v1/{v}", dict(v=False), "/v1/false"),
+        ("/v1/{v}", dict(v=".hidden"), "/v1/.hidden"),  # dot prefix ok
+        ("/v1/{v}", dict(v="file.txt"), "/v1/file.txt"),  # dot in middle ok
+        ("/v1/{v}", dict(v="..."), "/v1/..."),  # triple dot ok
+        ("/v1/{a}{b}", dict(a=".", b="txt"), "/v1/.txt"),  # dot var combining with adjacent to be ok
+        ("/items?q={v}#{f}", dict(v=".", f=".."), "/items?q=.#.."),  # dots in query/fragment are fine
+        (
+            "/v1/{a}?query={b}",
+            dict(a="../../other/endpoint", b="a&bad=true"),
+            "/v1/..%2F..%2Fother%2Fendpoint?query=a%26bad%3Dtrue",
+        ),
+        ("/v1/{val}", dict(val="a/b/c"), "/v1/a%2Fb%2Fc"),
+        ("/v1/{val}", dict(val="a/b/c?query=value"), "/v1/a%2Fb%2Fc%3Fquery=value"),
+        ("/v1/{val}", dict(val="a/b/c?query=value&bad=true"), "/v1/a%2Fb%2Fc%3Fquery=value&bad=true"),
+        ("/v1/{val}", dict(val="%20"), "/v1/%2520"),  # escapes escape sequences in input
+        # Query: slash and ? are safe, # is not
+        ("/items?q={v}", dict(v="a/b"), "/items?q=a/b"),
+        ("/items?q={v}", dict(v="a?b"), "/items?q=a?b"),
+        ("/items?q={v}", dict(v="a#b"), "/items?q=a%23b"),
+        ("/items?q={v}", dict(v="a b"), "/items?q=a%20b"),
+        # Fragment: slash and ? are safe
+        ("/docs#{v}", dict(v="a/b"), "/docs#a/b"),
+        ("/docs#{v}", dict(v="a?b"), "/docs#a?b"),
+        # Path: slash, ? and # are all encoded
+        ("/v1/{v}", dict(v="a/b"), "/v1/a%2Fb"),
+        ("/v1/{v}", dict(v="a?b"), "/v1/a%3Fb"),
+        ("/v1/{v}", dict(v="a#b"), "/v1/a%23b"),
+        # same var encoded differently by component
+        (
+            "/v1/{v}?q={v}#{v}",
+            dict(v="a/b?c#d"),
+            "/v1/a%2Fb%3Fc%23d?q=a/b?c%23d#a/b?c%23d",
+        ),
+        ("/v1/{val}", dict(val="x?admin=true"), "/v1/x%3Fadmin=true"),  # query injection
+        ("/v1/{val}", dict(val="x#admin"), "/v1/x%23admin"),  # fragment injection
+    ],
+)
+def test_interpolation(template: str, kwargs: dict[str, Any], expected: str) -> None:
+    assert path_template(template, **kwargs) == expected
+
+
+def test_missing_kwarg_raises_key_error() -> None:
+    with pytest.raises(KeyError, match="org_id"):
+        path_template("/v1/{org_id}")
+
+
+@pytest.mark.parametrize(
+    "template, kwargs",
+    [
+        ("{a}/path", dict(a=".")),
+        ("{a}/path", dict(a="..")),
+        ("/v1/{a}", dict(a=".")),
+        ("/v1/{a}", dict(a="..")),
+        ("/v1/{a}/path", dict(a=".")),
+        ("/v1/{a}/path", dict(a="..")),
+        ("/v1/{a}{b}", dict(a=".", b=".")),  # adjacent vars → ".."
+        ("/v1/{a}.", dict(a=".")),  # var + static → ".."
+        ("/v1/{a}{b}", dict(a="", b=".")),  # empty + dot → "."
+        ("/v1/%2e/{x}", dict(x="ok")),  # encoded dot in static text
+        ("/v1/%2e./{x}", dict(x="ok")),  # mixed encoded ".." in static
+        ("/v1/.%2E/{x}", dict(x="ok")),  # mixed encoded ".." in static
+        ("/v1/{v}?q=1", dict(v="..")),
+        ("/v1/{v}#frag", dict(v="..")),
+    ],
+)
+def test_dot_segment_rejected(template: str, kwargs: dict[str, Any]) -> None:
+    with pytest.raises(ValueError, match="dot-segment"):
+        path_template(template, **kwargs)

From 441e854a4933f7abd07961f08a58d7f7b7b3ea60 Mon Sep 17 00:00:00 2001
From: "stainless-app[bot]"
 <142633134+stainless-app[bot]@users.noreply.github.com>
Date: Fri, 20 Mar 2026 03:52:41 +0000
Subject: [PATCH 3/6] refactor(tests): switch from prism to steady

---
 CONTRIBUTING.md |  2 +-
 scripts/mock    | 26 +++++++++++++-------------
 scripts/test    | 16 ++++++++--------
 3 files changed, 22 insertions(+), 22 deletions(-)

diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index a02e59a..23e7298 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -85,7 +85,7 @@ $ pip install ./path-to-wheel-file.whl
 
 ## Running tests
 
-Most tests require you to [set up a mock server](https://github.com/stoplightio/prism) against the OpenAPI spec to run the tests.
+Most tests require you to [set up a mock server](https://github.com/dgellow/steady) against the OpenAPI spec to run the tests.
 
 ```sh
 $ ./scripts/mock
diff --git a/scripts/mock b/scripts/mock
index bcf3b39..38201de 100755
--- a/scripts/mock
+++ b/scripts/mock
@@ -19,34 +19,34 @@ fi
 
 echo "==> Starting mock server with URL ${URL}"
 
-# Run prism mock on the given spec
+# Run steady mock on the given spec
 if [ "$1" == "--daemon" ]; then
   # Pre-install the package so the download doesn't eat into the startup timeout
-  npm exec --package=@stainless-api/prism-cli@5.15.0 -- prism --version
+  npm exec --package=@stdy/cli@0.19.3 -- steady --version
 
-  npm exec --package=@stainless-api/prism-cli@5.15.0 -- prism mock "$URL" &> .prism.log &
+  npm exec --package=@stdy/cli@0.19.3 -- steady --host 127.0.0.1 -p 4010 --validator-query-array-format=comma --validator-query-object-format=brackets "$URL" &> .stdy.log &
 
-  # Wait for server to come online (max 30s)
+  # Wait for server to come online via health endpoint (max 30s)
   echo -n "Waiting for server"
   attempts=0
-  while ! grep -q "✖  fatal\|Prism is listening" ".prism.log" ; do
+  while ! curl --silent --fail "http://127.0.0.1:4010/_x-steady/health" >/dev/null 2>&1; do
+    if ! kill -0 $! 2>/dev/null; then
+      echo
+      cat .stdy.log
+      exit 1
+    fi
     attempts=$((attempts + 1))
     if [ "$attempts" -ge 300 ]; then
       echo
-      echo "Timed out waiting for Prism server to start"
-      cat .prism.log
+      echo "Timed out waiting for Steady server to start"
+      cat .stdy.log
       exit 1
     fi
     echo -n "."
     sleep 0.1
   done
 
-  if grep -q "✖  fatal" ".prism.log"; then
-    cat .prism.log
-    exit 1
-  fi
-
   echo
 else
-  npm exec --package=@stainless-api/prism-cli@5.15.0 -- prism mock "$URL"
+  npm exec --package=@stdy/cli@0.19.3 -- steady --host 127.0.0.1 -p 4010 --validator-query-array-format=comma --validator-query-object-format=brackets "$URL"
 fi
diff --git a/scripts/test b/scripts/test
index b56970b..b9eec01 100755
--- a/scripts/test
+++ b/scripts/test
@@ -9,8 +9,8 @@ GREEN='\033[0;32m'
 YELLOW='\033[0;33m'
 NC='\033[0m' # No Color
 
-function prism_is_running() {
-  curl --silent "http://localhost:4010" >/dev/null 2>&1
+function steady_is_running() {
+  curl --silent "http://127.0.0.1:4010/_x-steady/health" >/dev/null 2>&1
 }
 
 kill_server_on_port() {
@@ -25,7 +25,7 @@ function is_overriding_api_base_url() {
   [ -n "$TEST_API_BASE_URL" ]
 }
 
-if ! is_overriding_api_base_url && ! prism_is_running ; then
+if ! is_overriding_api_base_url && ! steady_is_running ; then
   # When we exit this script, make sure to kill the background mock server process
   trap 'kill_server_on_port 4010' EXIT
 
@@ -36,19 +36,19 @@ fi
 if is_overriding_api_base_url ; then
   echo -e "${GREEN}✔ Running tests against ${TEST_API_BASE_URL}${NC}"
   echo
-elif ! prism_is_running ; then
-  echo -e "${RED}ERROR:${NC} The test suite will not run without a mock Prism server"
+elif ! steady_is_running ; then
+  echo -e "${RED}ERROR:${NC} The test suite will not run without a mock Steady server"
   echo -e "running against your OpenAPI spec."
   echo
   echo -e "To run the server, pass in the path or url of your OpenAPI"
-  echo -e "spec to the prism command:"
+  echo -e "spec to the steady command:"
   echo
-  echo -e "  \$ ${YELLOW}npm exec --package=@stainless-api/prism-cli@5.15.0 -- prism mock path/to/your.openapi.yml${NC}"
+  echo -e "  \$ ${YELLOW}npm exec --package=@stdy/cli@0.19.3 -- steady path/to/your.openapi.yml --host 127.0.0.1 -p 4010 --validator-query-array-format=comma --validator-query-object-format=brackets${NC}"
   echo
 
   exit 1
 else
-  echo -e "${GREEN}✔ Mock prism server is running with your OpenAPI spec${NC}"
+  echo -e "${GREEN}✔ Mock steady server is running with your OpenAPI spec${NC}"
   echo
 fi
 

From a855b0a42e5926bdb4c1ece32f74370f9b481241 Mon Sep 17 00:00:00 2001
From: "stainless-app[bot]"
 <142633134+stainless-app[bot]@users.noreply.github.com>
Date: Sat, 21 Mar 2026 05:08:28 +0000
Subject: [PATCH 4/6] chore(tests): bump steady to v0.19.4

---
 scripts/mock | 6 +++---
 scripts/test | 2 +-
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/scripts/mock b/scripts/mock
index 38201de..e1c19e8 100755
--- a/scripts/mock
+++ b/scripts/mock
@@ -22,9 +22,9 @@ echo "==> Starting mock server with URL ${URL}"
 # Run steady mock on the given spec
 if [ "$1" == "--daemon" ]; then
   # Pre-install the package so the download doesn't eat into the startup timeout
-  npm exec --package=@stdy/cli@0.19.3 -- steady --version
+  npm exec --package=@stdy/cli@0.19.4 -- steady --version
 
-  npm exec --package=@stdy/cli@0.19.3 -- steady --host 127.0.0.1 -p 4010 --validator-query-array-format=comma --validator-query-object-format=brackets "$URL" &> .stdy.log &
+  npm exec --package=@stdy/cli@0.19.4 -- steady --host 127.0.0.1 -p 4010 --validator-form-array-format=comma --validator-query-array-format=comma --validator-form-object-format=brackets --validator-query-object-format=brackets "$URL" &> .stdy.log &
 
   # Wait for server to come online via health endpoint (max 30s)
   echo -n "Waiting for server"
@@ -48,5 +48,5 @@ if [ "$1" == "--daemon" ]; then
 
   echo
 else
-  npm exec --package=@stdy/cli@0.19.3 -- steady --host 127.0.0.1 -p 4010 --validator-query-array-format=comma --validator-query-object-format=brackets "$URL"
+  npm exec --package=@stdy/cli@0.19.4 -- steady --host 127.0.0.1 -p 4010 --validator-form-array-format=comma --validator-query-array-format=comma --validator-form-object-format=brackets --validator-query-object-format=brackets "$URL"
 fi
diff --git a/scripts/test b/scripts/test
index b9eec01..2abf1b6 100755
--- a/scripts/test
+++ b/scripts/test
@@ -43,7 +43,7 @@ elif ! steady_is_running ; then
   echo -e "To run the server, pass in the path or url of your OpenAPI"
   echo -e "spec to the steady command:"
   echo
-  echo -e "  \$ ${YELLOW}npm exec --package=@stdy/cli@0.19.3 -- steady path/to/your.openapi.yml --host 127.0.0.1 -p 4010 --validator-query-array-format=comma --validator-query-object-format=brackets${NC}"
+  echo -e "  \$ ${YELLOW}npm exec --package=@stdy/cli@0.19.4 -- steady path/to/your.openapi.yml --host 127.0.0.1 -p 4010 --validator-form-array-format=comma --validator-query-array-format=comma --validator-form-object-format=brackets --validator-query-object-format=brackets${NC}"
   echo
 
   exit 1

From 7ea97c0c00ee4d81301a6b2214ed677e88a5fcd8 Mon Sep 17 00:00:00 2001
From: "stainless-app[bot]"
 <142633134+stainless-app[bot]@users.noreply.github.com>
Date: Sat, 21 Mar 2026 05:13:59 +0000
Subject: [PATCH 5/6] chore(tests): bump steady to v0.19.5

---
 scripts/mock | 6 +++---
 scripts/test | 2 +-
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/scripts/mock b/scripts/mock
index e1c19e8..ab814d3 100755
--- a/scripts/mock
+++ b/scripts/mock
@@ -22,9 +22,9 @@ echo "==> Starting mock server with URL ${URL}"
 # Run steady mock on the given spec
 if [ "$1" == "--daemon" ]; then
   # Pre-install the package so the download doesn't eat into the startup timeout
-  npm exec --package=@stdy/cli@0.19.4 -- steady --version
+  npm exec --package=@stdy/cli@0.19.5 -- steady --version
 
-  npm exec --package=@stdy/cli@0.19.4 -- steady --host 127.0.0.1 -p 4010 --validator-form-array-format=comma --validator-query-array-format=comma --validator-form-object-format=brackets --validator-query-object-format=brackets "$URL" &> .stdy.log &
+  npm exec --package=@stdy/cli@0.19.5 -- steady --host 127.0.0.1 -p 4010 --validator-form-array-format=comma --validator-query-array-format=comma --validator-form-object-format=brackets --validator-query-object-format=brackets "$URL" &> .stdy.log &
 
   # Wait for server to come online via health endpoint (max 30s)
   echo -n "Waiting for server"
@@ -48,5 +48,5 @@ if [ "$1" == "--daemon" ]; then
 
   echo
 else
-  npm exec --package=@stdy/cli@0.19.4 -- steady --host 127.0.0.1 -p 4010 --validator-form-array-format=comma --validator-query-array-format=comma --validator-form-object-format=brackets --validator-query-object-format=brackets "$URL"
+  npm exec --package=@stdy/cli@0.19.5 -- steady --host 127.0.0.1 -p 4010 --validator-form-array-format=comma --validator-query-array-format=comma --validator-form-object-format=brackets --validator-query-object-format=brackets "$URL"
 fi
diff --git a/scripts/test b/scripts/test
index 2abf1b6..5105f92 100755
--- a/scripts/test
+++ b/scripts/test
@@ -43,7 +43,7 @@ elif ! steady_is_running ; then
   echo -e "To run the server, pass in the path or url of your OpenAPI"
   echo -e "spec to the steady command:"
   echo
-  echo -e "  \$ ${YELLOW}npm exec --package=@stdy/cli@0.19.4 -- steady path/to/your.openapi.yml --host 127.0.0.1 -p 4010 --validator-form-array-format=comma --validator-query-array-format=comma --validator-form-object-format=brackets --validator-query-object-format=brackets${NC}"
+  echo -e "  \$ ${YELLOW}npm exec --package=@stdy/cli@0.19.5 -- steady path/to/your.openapi.yml --host 127.0.0.1 -p 4010 --validator-form-array-format=comma --validator-query-array-format=comma --validator-form-object-format=brackets --validator-query-object-format=brackets${NC}"
   echo
 
   exit 1

From 0a0e81259a1d5799ceed0dd9221e0f9518721f8b Mon Sep 17 00:00:00 2001
From: "stainless-app[bot]"
 <142633134+stainless-app[bot]@users.noreply.github.com>
Date: Sat, 21 Mar 2026 05:14:14 +0000
Subject: [PATCH 6/6] release: 0.36.1

---
 .release-please-manifest.json |  2 +-
 CHANGELOG.md                  | 19 +++++++++++++++++++
 pyproject.toml                |  2 +-
 src/hyperspell/_version.py    |  2 +-
 4 files changed, 22 insertions(+), 3 deletions(-)

diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 157f035..559b451 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.36.0"
+  ".": "0.36.1"
 }
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index a32e39f..b0e6337 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,24 @@
 # Changelog
 
+## 0.36.1 (2026-03-21)
+
+Full Changelog: [v0.36.0...v0.36.1](https://github.com/hyperspell/python-sdk/compare/v0.36.0...v0.36.1)
+
+### Bug Fixes
+
+* sanitize endpoint path params ([b2b3ca2](https://github.com/hyperspell/python-sdk/commit/b2b3ca2749930db6558bbe5bc3bb1ce4adadfe0e))
+
+
+### Chores
+
+* **tests:** bump steady to v0.19.4 ([a855b0a](https://github.com/hyperspell/python-sdk/commit/a855b0a42e5926bdb4c1ece32f74370f9b481241))
+* **tests:** bump steady to v0.19.5 ([7ea97c0](https://github.com/hyperspell/python-sdk/commit/7ea97c0c00ee4d81301a6b2214ed677e88a5fcd8))
+
+
+### Refactors
+
+* **tests:** switch from prism to steady ([441e854](https://github.com/hyperspell/python-sdk/commit/441e854a4933f7abd07961f08a58d7f7b7b3ea60))
+
 ## 0.36.0 (2026-03-18)
 
 Full Changelog: [v0.35.0...v0.36.0](https://github.com/hyperspell/python-sdk/compare/v0.35.0...v0.36.0)
diff --git a/pyproject.toml b/pyproject.toml
index 94f3c49..6529142 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "hyperspell"
-version = "0.36.0"
+version = "0.36.1"
 description = "The official Python library for the hyperspell API"
 dynamic = ["readme"]
 license = "MIT"
diff --git a/src/hyperspell/_version.py b/src/hyperspell/_version.py
index 77a7048..24709af 100644
--- a/src/hyperspell/_version.py
+++ b/src/hyperspell/_version.py
@@ -1,4 +1,4 @@
 # File generated from our OpenAPI spec by Stainless. See CONTRIBUTING.md for details.
 
 __title__ = "hyperspell"
-__version__ = "0.36.0"  # x-release-please-version
+__version__ = "0.36.1"  # x-release-please-version