langchain-ai/deepagents · error · TypeError

Workspace server returned an invalid binding response.

Error message

Workspace server returned an invalid binding response.

What it means

`abind_workspace` POSTs `{cwd, workspace_config?, config_fingerprint?}` to `/dcode/threads/{thread_id}/workspace` and requires the response to be an object with a `workspace` object. If the response is not a dict or `response['workspace']` is not a dict, it raises this TypeError — the server (or intermediary) returned a descriptor the client cannot use or cache.

Source

Thrown at libs/code/deepagents_code/client/remote_client.py:829

        Raises:
            TypeError: If the server returns a malformed descriptor.
        """
        thread_id = _require_thread_id(config)
        graph = self._get_graph()
        payload: dict[str, Any] = {"cwd": cwd}
        if self._workspace_config is not None:
            payload["workspace_config"] = self._workspace_config
            payload["config_fingerprint"] = self._workspace_config_fingerprint
        response = await graph.client.http.post(
            f"/dcode/threads/{thread_id}/workspace",
            json=payload,
        )
        if not isinstance(response, dict) or not isinstance(
            response.get("workspace"), dict
        ):
            msg = "Workspace server returned an invalid binding response."
            raise TypeError(msg)
        workspace = cast("dict[str, Any]", response["workspace"])
        self._workspaces[thread_id] = workspace
        return workspace

    def set_workspace(
        self,
        cwd: str,
        config: Mapping[str, Any] | None = None,
        *,
        config_fingerprint: str | None = None,
    ) -> None:
        """Configure the explicit workspace used when binding threads.

        Raises:
            ValueError: If only one policy field is provided.
        """
        if (config is None) != (config_fingerprint is None):
            msg = "Workspace policy and fingerprint must be configured together."

View on GitHub (pinned to a1af029e6e)

Solutions

1. Upgrade (or match) the server version so the `/dcode/threads/{id}/workspace` route returns `{"workspace": {...}}`.
2. Inspect the raw HTTP response (curl or server logs) to see what was actually returned.
3. Remove or reconfigure proxies/gateways that wrap or rewrite the JSON body.
4. If you operate a custom server, fix the route to return a top-level `workspace` object.

def is_workspace_binding_response(value: object) -> bool:
    return isinstance(value, dict) and isinstance(value.get("workspace"), dict)

try:
    await agent.abind_workspace(config, cwd)
except TypeError as exc:
    if "invalid binding response" in str(exc):
        logging.error("Workspace endpoint response malformed; check server version/proxy")
    else:
        raise

When it happens

Trigger: The workspace-binding route returns a non-object body, an object without a `workspace` key, or a null/non-dict `workspace` value — e.g. an older server without the dcode workspace route returning a different shape, or a proxy error page parsed as JSON.

Common situations: Server/client version drift on the binding response schema; a custom server reimplementation of the route omitting the `workspace` key; a gateway returning a wrapped envelope like `{"data": {...}}` instead of the flat descriptor.

Related errors

• Offload server returned a non-object response.
• Offload server returned an invalid operation response.
• Could not parse embedded resource block. Block expected eith
• {question_type} question {question_text!r} must not define '
• A workspace is required to start the remote agent.

AI-assisted analysis of langchain-ai/deepagents@a1af029e6e (2026-08-29). Data as JSON: /api/errors/4b4253b84045d0d1. Report an issue: GitHub.