diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 141e7cd..ff66120 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.47.0"
+  ".": "0.48.0"
 }
\ No newline at end of file
diff --git a/.stats.yml b/.stats.yml
index 9a11071..d4b4e6b 100644
--- a/.stats.yml
+++ b/.stats.yml
@@ -1,4 +1,4 @@
 configured_endpoints: 138
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/zavu/zavudev-69a49371271acbb8de23d4d5336746b1487a5fb9b30189ec74f6a74a8a487951.yml
-openapi_spec_hash: 05122bf62f2a0ba6f1948eb97f1af7fb
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/zavu/zavudev-3a307b6fa4a6fc0199acbf0660fd1e5ca0ac68082b073b74dbd22e70f3a9ea6e.yml
+openapi_spec_hash: a9a255215f69ae2c4abbef59b07f08ea
 config_hash: 70a26cd21f0ca1b34242677b831603db
diff --git a/CHANGELOG.md b/CHANGELOG.md
index c559515..f02dd90 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,15 @@
 # Changelog
 
+## 0.48.0 (2026-08-05)
+
+Full Changelog: [v0.47.0...v0.48.0](https://github.com/zavudev/sdk-python/compare/v0.47.0...v0.48.0)
+
+### Features
+
+* **api:** api update ([f1dc343](https://github.com/zavudev/sdk-python/commit/f1dc3438dcf4bf96037f6d1a01aad8309ba08857))
+* **api:** api update ([0546196](https://github.com/zavudev/sdk-python/commit/054619616c3c3068170d13e0970bcf9afda85782))
+* **api:** api update ([4a47dca](https://github.com/zavudev/sdk-python/commit/4a47dca13b67b2be25881bf728170497be72e4cc))
+
 ## 0.47.0 (2026-08-02)
 
 Full Changelog: [v0.46.0...v0.47.0](https://github.com/zavudev/sdk-python/compare/v0.46.0...v0.47.0)
diff --git a/pyproject.toml b/pyproject.toml
index 41c18af..2f4c054 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "zavudev"
-version = "0.47.0"
+version = "0.48.0"
 description = "The official Python library for the zavudev API"
 dynamic = ["readme"]
 license = "Apache-2.0"
diff --git a/src/zavudev/_version.py b/src/zavudev/_version.py
index bd5f0f6..919a552 100644
--- a/src/zavudev/_version.py
+++ b/src/zavudev/_version.py
@@ -1,4 +1,4 @@
 # File generated from our OpenAPI spec by Stainless. See CONTRIBUTING.md for details.
 
 __title__ = "zavudev"
-__version__ = "0.47.0"  # x-release-please-version
+__version__ = "0.48.0"  # x-release-please-version
diff --git a/src/zavudev/resources/functions/functions.py b/src/zavudev/resources/functions/functions.py
index ab96ec4..6bef2dd 100644
--- a/src/zavudev/resources/functions/functions.py
+++ b/src/zavudev/resources/functions/functions.py
@@ -101,6 +101,11 @@ def create(
 
           source_code: TypeScript source code for the function entry point (max ~900KB).
 
+          timeout_sec: Per-invocation timeout in seconds. Event and cron invocations are asynchronous,
+              so a long timeout only bounds cost; a tool called during a live conversation
+              holds up the reply, and a function exposed over HTTP is additionally bounded by
+              the platform's HTTP response limit.
+
           extra_headers: Send extra headers
 
           extra_query: Add additional query parameters to the request
@@ -461,6 +466,11 @@ async def create(
 
           source_code: TypeScript source code for the function entry point (max ~900KB).
 
+          timeout_sec: Per-invocation timeout in seconds. Event and cron invocations are asynchronous,
+              so a long timeout only bounds cost; a tool called during a live conversation
+              holds up the reply, and a function exposed over HTTP is additionally bounded by
+              the platform's HTTP response limit.
+
           extra_headers: Send extra headers
 
           extra_query: Add additional query parameters to the request
diff --git a/src/zavudev/resources/phone_numbers.py b/src/zavudev/resources/phone_numbers.py
index 6aace0e..61b71b1 100644
--- a/src/zavudev/resources/phone_numbers.py
+++ b/src/zavudev/resources/phone_numbers.py
@@ -201,8 +201,9 @@ def purchase(
     ) -> PhoneNumberPurchaseResponse:
         """Purchase an available phone number.
 
-        The first US phone number is free for each
-        team.
+        Requires a paid plan: the Free plan cannot
+        purchase phone numbers and receives `402` with code `paid_plan_required`. Paid
+        plans include the first US number at no charge.
 
         Args:
           phone_number: Phone number in E.164 format.
@@ -537,8 +538,9 @@ async def purchase(
     ) -> PhoneNumberPurchaseResponse:
         """Purchase an available phone number.
 
-        The first US phone number is free for each
-        team.
+        Requires a paid plan: the Free plan cannot
+        purchase phone numbers and receives `402` with code `paid_plan_required`. Paid
+        plans include the first US number at no charge.
 
         Args:
           phone_number: Phone number in E.164 format.
diff --git a/src/zavudev/resources/senders/agent/tools.py b/src/zavudev/resources/senders/agent/tools.py
index 032cf2a..bd916f5 100644
--- a/src/zavudev/resources/senders/agent/tools.py
+++ b/src/zavudev/resources/senders/agent/tools.py
@@ -297,7 +297,16 @@ def test(
         timeout: float | httpx.Timeout | None | NotGiven = not_given,
     ) -> ToolTestResponse:
         """
-        Test a tool by triggering its webhook with test parameters.
+        Run a tool with the parameters you supply and return what it answered.
+
+        The call is synchronous: the response carries the tool's status, body, and
+        duration, so a green result is evidence the tool ran rather than evidence it was
+        accepted. Each run is also recorded and readable afterwards via
+        `GET /v1/senders/{senderId}/agent/tools/{toolId}/test-runs`.
+
+        A tool that answers with an error is reported as a run with `success: false` —
+        the endpoint itself still returns 200. This fires the tool's real webhook, so a
+        test has whatever side effects the tool has.
 
         Args:
           test_params: Parameters to pass to the tool for testing.
@@ -587,7 +596,16 @@ async def test(
         timeout: float | httpx.Timeout | None | NotGiven = not_given,
     ) -> ToolTestResponse:
         """
-        Test a tool by triggering its webhook with test parameters.
+        Run a tool with the parameters you supply and return what it answered.
+
+        The call is synchronous: the response carries the tool's status, body, and
+        duration, so a green result is evidence the tool ran rather than evidence it was
+        accepted. Each run is also recorded and readable afterwards via
+        `GET /v1/senders/{senderId}/agent/tools/{toolId}/test-runs`.
+
+        A tool that answers with an error is reported as a run with `success: false` —
+        the endpoint itself still returns 200. This fires the tool's real webhook, so a
+        test has whatever side effects the tool has.
 
         Args:
           test_params: Parameters to pass to the tool for testing.
diff --git a/src/zavudev/resources/senders/senders.py b/src/zavudev/resources/senders/senders.py
index 738a918..0510e80 100644
--- a/src/zavudev/resources/senders/senders.py
+++ b/src/zavudev/resources/senders/senders.py
@@ -90,6 +90,7 @@ def create(
         email_domain_id: str | Omit = omit,
         email_from_name: str | Omit = omit,
         email_receiving_enabled: bool | Omit = omit,
+        enable_sms_oneway: bool | Omit = omit,
         enable_voice: bool | Omit = omit,
         phone_number: str | Omit = omit,
         set_as_default: bool | Omit = omit,
@@ -119,6 +120,11 @@ def create(
           email_receiving_enabled: Enable inbound email receiving on this sender. Requires a verified MX record on
               the domain; ignored otherwise.
 
+          enable_sms_oneway: Enable the one-way SMS channel (`sms_oneway`). Needs nothing else — no phone
+              number, no credential — so it is the fastest way to get a sender that can send.
+              Recipients cannot reply. Confirm with `sms_oneway` in the `channels` array on
+              the response.
+
           enable_voice: Let this sender place and answer phone calls. Requires `phoneNumber`; enabling
               it without one returns 400. Check the `channels` array on the response to
               confirm `voice` is on.
@@ -150,6 +156,7 @@ def create(
                     "email_domain_id": email_domain_id,
                     "email_from_name": email_from_name,
                     "email_receiving_enabled": email_receiving_enabled,
+                    "enable_sms_oneway": enable_sms_oneway,
                     "enable_voice": enable_voice,
                     "phone_number": phone_number,
                     "set_as_default": set_as_default,
@@ -206,6 +213,7 @@ def update(
         email_domain_id: str | Omit = omit,
         email_from_name: str | Omit = omit,
         email_receiving_enabled: bool | Omit = omit,
+        enable_sms_oneway: bool | Omit = omit,
         enable_voice: bool | Omit = omit,
         name: str | Omit = omit,
         set_as_default: bool | Omit = omit,
@@ -237,6 +245,10 @@ def update(
 
           email_receiving_enabled: Enable or disable inbound email receiving for this sender.
 
+          enable_sms_oneway: Turn the one-way SMS channel on or off. Enabling needs nothing else and takes
+              effect immediately; disabling removes the channel from the sender. Confirm with
+              the `channels` array on the response.
+
           enable_voice: Turn the voice channel on or off. The sender must already have a phone number
               provisioned for calls; enabling it otherwise returns 400 instead of storing a
               flag that changes nothing. Confirm with the `channels` array on the response.
@@ -266,6 +278,7 @@ def update(
                     "email_domain_id": email_domain_id,
                     "email_from_name": email_from_name,
                     "email_receiving_enabled": email_receiving_enabled,
+                    "enable_sms_oneway": enable_sms_oneway,
                     "enable_voice": enable_voice,
                     "name": name,
                     "set_as_default": set_as_default,
@@ -577,6 +590,7 @@ async def create(
         email_domain_id: str | Omit = omit,
         email_from_name: str | Omit = omit,
         email_receiving_enabled: bool | Omit = omit,
+        enable_sms_oneway: bool | Omit = omit,
         enable_voice: bool | Omit = omit,
         phone_number: str | Omit = omit,
         set_as_default: bool | Omit = omit,
@@ -606,6 +620,11 @@ async def create(
           email_receiving_enabled: Enable inbound email receiving on this sender. Requires a verified MX record on
               the domain; ignored otherwise.
 
+          enable_sms_oneway: Enable the one-way SMS channel (`sms_oneway`). Needs nothing else — no phone
+              number, no credential — so it is the fastest way to get a sender that can send.
+              Recipients cannot reply. Confirm with `sms_oneway` in the `channels` array on
+              the response.
+
           enable_voice: Let this sender place and answer phone calls. Requires `phoneNumber`; enabling
               it without one returns 400. Check the `channels` array on the response to
               confirm `voice` is on.
@@ -637,6 +656,7 @@ async def create(
                     "email_domain_id": email_domain_id,
                     "email_from_name": email_from_name,
                     "email_receiving_enabled": email_receiving_enabled,
+                    "enable_sms_oneway": enable_sms_oneway,
                     "enable_voice": enable_voice,
                     "phone_number": phone_number,
                     "set_as_default": set_as_default,
@@ -693,6 +713,7 @@ async def update(
         email_domain_id: str | Omit = omit,
         email_from_name: str | Omit = omit,
         email_receiving_enabled: bool | Omit = omit,
+        enable_sms_oneway: bool | Omit = omit,
         enable_voice: bool | Omit = omit,
         name: str | Omit = omit,
         set_as_default: bool | Omit = omit,
@@ -724,6 +745,10 @@ async def update(
 
           email_receiving_enabled: Enable or disable inbound email receiving for this sender.
 
+          enable_sms_oneway: Turn the one-way SMS channel on or off. Enabling needs nothing else and takes
+              effect immediately; disabling removes the channel from the sender. Confirm with
+              the `channels` array on the response.
+
           enable_voice: Turn the voice channel on or off. The sender must already have a phone number
               provisioned for calls; enabling it otherwise returns 400 instead of storing a
               flag that changes nothing. Confirm with the `channels` array on the response.
@@ -753,6 +778,7 @@ async def update(
                     "email_domain_id": email_domain_id,
                     "email_from_name": email_from_name,
                     "email_receiving_enabled": email_receiving_enabled,
+                    "enable_sms_oneway": enable_sms_oneway,
                     "enable_voice": enable_voice,
                     "name": name,
                     "set_as_default": set_as_default,
diff --git a/src/zavudev/types/function_create_params.py b/src/zavudev/types/function_create_params.py
index 40bdc22..336a028 100644
--- a/src/zavudev/types/function_create_params.py
+++ b/src/zavudev/types/function_create_params.py
@@ -33,3 +33,9 @@ class FunctionCreateParams(TypedDict, total=False):
     """TypeScript source code for the function entry point (max ~900KB)."""
 
     timeout_sec: Annotated[int, PropertyInfo(alias="timeoutSec")]
+    """Per-invocation timeout in seconds.
+
+    Event and cron invocations are asynchronous, so a long timeout only bounds cost;
+    a tool called during a live conversation holds up the reply, and a function
+    exposed over HTTP is additionally bounded by the platform's HTTP response limit.
+    """
diff --git a/src/zavudev/types/phone_number_pricing.py b/src/zavudev/types/phone_number_pricing.py
index 6c0ac3b..661b5ad 100644
--- a/src/zavudev/types/phone_number_pricing.py
+++ b/src/zavudev/types/phone_number_pricing.py
@@ -11,7 +11,10 @@
 
 class PhoneNumberPricing(BaseModel):
     is_free_eligible: Optional[bool] = FieldInfo(alias="isFreeEligible", default=None)
-    """Whether this number qualifies for the free first US number offer."""
+    """
+    Whether this number qualifies as the plan-included first US number on paid
+    plans.
+    """
 
     monthly_price: Optional[float] = FieldInfo(alias="monthlyPrice", default=None)
     """Monthly price in USD."""
diff --git a/src/zavudev/types/sender_create_params.py b/src/zavudev/types/sender_create_params.py
index 2910d8f..b17db04 100644
--- a/src/zavudev/types/sender_create_params.py
+++ b/src/zavudev/types/sender_create_params.py
@@ -36,6 +36,14 @@ class SenderCreateParams(TypedDict, total=False):
     Requires a verified MX record on the domain; ignored otherwise.
     """
 
+    enable_sms_oneway: Annotated[bool, PropertyInfo(alias="enableSmsOneway")]
+    """Enable the one-way SMS channel (`sms_oneway`).
+
+    Needs nothing else — no phone number, no credential — so it is the fastest way
+    to get a sender that can send. Recipients cannot reply. Confirm with
+    `sms_oneway` in the `channels` array on the response.
+    """
+
     enable_voice: Annotated[bool, PropertyInfo(alias="enableVoice")]
     """Let this sender place and answer phone calls.
 
diff --git a/src/zavudev/types/sender_update_params.py b/src/zavudev/types/sender_update_params.py
index 3c58022..3b6d96a 100644
--- a/src/zavudev/types/sender_update_params.py
+++ b/src/zavudev/types/sender_update_params.py
@@ -39,6 +39,13 @@ class SenderUpdateParams(TypedDict, total=False):
     email_receiving_enabled: Annotated[bool, PropertyInfo(alias="emailReceivingEnabled")]
     """Enable or disable inbound email receiving for this sender."""
 
+    enable_sms_oneway: Annotated[bool, PropertyInfo(alias="enableSmsOneway")]
+    """Turn the one-way SMS channel on or off.
+
+    Enabling needs nothing else and takes effect immediately; disabling removes the
+    channel from the sender. Confirm with the `channels` array on the response.
+    """
+
     enable_voice: Annotated[bool, PropertyInfo(alias="enableVoice")]
     """Turn the voice channel on or off.
 
diff --git a/src/zavudev/types/senders/agent/tool_test_response.py b/src/zavudev/types/senders/agent/tool_test_response.py
index cf16168..46deb65 100644
--- a/src/zavudev/types/senders/agent/tool_test_response.py
+++ b/src/zavudev/types/senders/agent/tool_test_response.py
@@ -1,9 +1,56 @@
 # File generated from our OpenAPI spec by Stainless. See CONTRIBUTING.md for details.
 
+from typing import Dict, Optional
+from datetime import datetime
+
+from pydantic import Field as FieldInfo
+
 from ...._models import BaseModel
 
-__all__ = ["ToolTestResponse"]
+__all__ = ["ToolTestResponse", "Run"]
+
+
+class Run(BaseModel):
+    """One run of a tool triggered from the test endpoint.
+
+    Recorded so a test is verifiable after the fact rather than only visible in the response.
+    """
+
+    id: str
+
+    created_at: datetime = FieldInfo(alias="createdAt")
+
+    duration_ms: int = FieldInfo(alias="durationMs")
+
+    success: bool
+    """Whether the tool returned without error.
+
+    A tool that answered with a non-2xx status is a failed run, not an error of this
+    endpoint.
+    """
+
+    tool_id: str = FieldInfo(alias="toolId")
+
+    error: Optional[str] = None
+    """Why the run failed, when it did."""
+
+    params: Optional[Dict[str, object]] = None
+    """The parameters the tool was called with."""
+
+    response: Optional[str] = None
+    """The tool's response body, truncated."""
+
+    status_code: Optional[int] = FieldInfo(alias="statusCode", default=None)
+    """HTTP status the tool's webhook returned.
+
+    Absent for tools that do not go over HTTP.
+    """
 
 
 class ToolTestResponse(BaseModel):
-    scheduled: bool
+    run: Run
+    """One run of a tool triggered from the test endpoint.
+
+    Recorded so a test is verifiable after the fact rather than only visible in the
+    response.
+    """
diff --git a/src/zavudev/types/senders/agent_execution.py b/src/zavudev/types/senders/agent_execution.py
index 33e6edc..cd40fdd 100644
--- a/src/zavudev/types/senders/agent_execution.py
+++ b/src/zavudev/types/senders/agent_execution.py
@@ -46,3 +46,12 @@ class AgentExecution(BaseModel):
     response_message_id: Optional[str] = FieldInfo(alias="responseMessageId", default=None)
 
     response_text: Optional[str] = FieldInfo(alias="responseText", default=None)
+
+    tool_calls: Optional[int] = FieldInfo(alias="toolCalls", default=None)
+    """Tools the agent called while producing this reply.
+
+    Zero on an agent that has tools configured means it answered without calling any
+    — the case where a reply says it will look something up and nothing ever reaches
+    your endpoint. Absent on executions recorded before this field existed, which is
+    not the same as zero.
+    """
diff --git a/tests/api_resources/test_senders.py b/tests/api_resources/test_senders.py
index 426466c..2683d35 100644
--- a/tests/api_resources/test_senders.py
+++ b/tests/api_resources/test_senders.py
@@ -41,6 +41,7 @@ def test_method_create_with_all_params(self, client: Zavudev) -> None:
             email_domain_id="emailDomainId",
             email_from_name="emailFromName",
             email_receiving_enabled=True,
+            enable_sms_oneway=True,
             enable_voice=True,
             phone_number="phoneNumber",
             set_as_default=True,
@@ -135,6 +136,7 @@ def test_method_update_with_all_params(self, client: Zavudev) -> None:
             email_domain_id="emailDomainId",
             email_from_name="emailFromName",
             email_receiving_enabled=True,
+            enable_sms_oneway=True,
             enable_voice=True,
             name="name",
             set_as_default=True,
@@ -470,6 +472,7 @@ async def test_method_create_with_all_params(self, async_client: AsyncZavudev) -
             email_domain_id="emailDomainId",
             email_from_name="emailFromName",
             email_receiving_enabled=True,
+            enable_sms_oneway=True,
             enable_voice=True,
             phone_number="phoneNumber",
             set_as_default=True,
@@ -564,6 +567,7 @@ async def test_method_update_with_all_params(self, async_client: AsyncZavudev) -
             email_domain_id="emailDomainId",
             email_from_name="emailFromName",
             email_receiving_enabled=True,
+            enable_sms_oneway=True,
             enable_voice=True,
             name="name",
             set_as_default=True,