SDK regeneration

.fern/metadata.json

@@ -45,10 +45,10 @@
       }
     ]
   },
-  "originGitCommit": "c3e8467d7de3ac4b4d54e3c9bc4828bebfc4c792",
+  "originGitCommit": "e9ca686b515042154390e137de05194b4a191566",
   "originGitCommitIsDirty": false,
   "invokedBy": "ci",
-  "requestedVersion": "5.3.0",
+  "requestedVersion": "5.3.1",
   "ciProvider": "github",
-  "sdkVersion": "5.3.0"
+  "sdkVersion": "5.3.1"
 }

changelog.md

@@ -1,3 +1,17 @@
+## 5.3.1 - 2026-07-29
+
+Billing read endpoints, a call-log type fix, and clearer agent-crew deploy warnings. Additive; no breaking changes.
+
+* **Billing** (new `client.atoms.billing`): `get_balance`, `get_ledger`, `get_usage_breakdown`,
+  `list_invoices`, `get_invoice_pdf` (read-only credit and invoice endpoints under `/payment/v1`).
+* **Fix**: `calls.get` / `calls.list` transcript-turn `timestamp` is typed as a string (ISO-8601),
+  matching what the API returns. Previously typed as a number, which triggered a deserialization
+  warning.
+* **CLI DevX** (`smallestai agent-crew deploy`): a pre-deploy layout check warns on a `src/` layout,
+  a nested entry point, or a `pyproject.toml` with no `requirements.txt` (all fail the cloud build);
+  and the environment-variable warning now points to the working path (ship a `.env` at the project
+  root and call `load_dotenv()`; it deploys with your code) instead of just saying it is not propagated.
+
 ## 5.3.0 - 2026-07-28
 
 Unified speech-to-text namespace (breaking), voice cloning, Electron LLM, webhook update.

examples/build_voice_agent.py

@@ -39,6 +39,7 @@ def make_client() -> SmallestAI:
             atoms=f"{base}/atoms/v1",
             waves=base,
             waves_ws=base.replace("https", "wss").replace("http", "ws"),
+            payment=base,
         )
         return SmallestAI(api_key=api_key, environment=env)
     return SmallestAI(api_key=api_key)

examples/quickstart.py

@@ -25,6 +25,7 @@ def make_client() -> SmallestAI:
             atoms=f"{base}/atoms/v1",
             waves=base,
             waves_ws=base.replace("https", "wss").replace("http", "ws"),
+            payment=base,
         )
         return SmallestAI(api_key=api_key, environment=env)
     return SmallestAI(api_key=api_key)  # production

pyproject.toml

@@ -5,7 +5,7 @@ dynamic = ["version"]
 
 [tool.poetry]
 name = "smallestai"
-version = "5.3.0"
+version = "5.3.1"
 description = ""
 readme = "README.md"
 authors = []