feat(web): accept connector runtime context values for a task

src/xagent/web/api/chat.py

@@ -9,6 +9,7 @@
 from typing import Any, Callable, Dict, List, Mapping, Optional, TypeVar, Union, cast
 
 from fastapi import APIRouter, Depends, HTTPException, Request
+from fastapi.responses import JSONResponse
 from sqlalchemy import func, or_, update
 from sqlalchemy.orm import Session
 
@@ -75,7 +76,10 @@
     parse_user_sandbox_key,
 )
 from ..schemas.chat import TaskCreateRequest, TaskCreateResponse
-from ..schemas.connector_runtime import ConnectorRuntimeRequirementsModel
+from ..schemas.connector_runtime import (
+    ConnectorRuntimeRequirementsModel,
+    ConnectorRuntimeValuesRequest,
+)
 from ..services.agent_access import list_accessible_published_agents
 from ..services.agent_team_scope import (
     get_agent_team_scope,
@@ -90,6 +94,7 @@
 )
 from ..services.client_error_messages import ClientErrorCode, client_error_message
 from ..services.connector_runtime import (
+    apply_task_connector_runtime_context_values,
     bind_connector_runtime_selection_snapshot,
     build_task_runtime_requirements,
     resolve_agent_runtime_requirements,
@@ -5301,6 +5306,32 @@ async def get_task_runtime_extensions(
     }
 
 
+def _connector_runtime_error_response(exc: ConnectorRuntimeError) -> JSONResponse:
+    """Render a connector-runtime failure in this endpoint's error envelope.
+
+    Mirrors the ``{"error": {"code", "message", "details"}}`` shape
+    ``_raise_v1_connector_runtime_error`` uses for the /v1 surface
+    (``api/v1/tasks.py``) -- only the envelope is shared, not ``V1ErrorCode``,
+    which is a separate SDK-facing contract this endpoint does not
+    participate in. The status code always comes from ``exc.status_code``,
+    never recomputed from ``exc.code`` via ``_status_for_code``: that helper
+    cannot produce 503, and both this endpoint's own conditional-update
+    failure and a team-scope resolution failure construct their
+    ``ConnectorRuntimeError`` with an explicit ``status_code=503``.
+    """
+
+    return JSONResponse(
+        status_code=exc.status_code,
+        content={
+            "error": {
+                "code": exc.code,
+                "message": exc.safe_message,
+                "details": exc.to_public_error()["details"],
+            }
+        },
+    )
+
+
 @chat_router.get(
     "/agent/{agent_id}/connector-runtime-requirements",
     response_model=ConnectorRuntimeRequirementsModel,
@@ -5387,6 +5418,77 @@ async def get_task_connector_runtime_requirements(
         ) from exc
 
 
+@chat_router.post(
+    "/task/{task_id}/connector-runtime-values",
+    response_model=ConnectorRuntimeRequirementsModel,
+)
+def post_task_connector_runtime_values(
+    task_id: int,
+    request: ConnectorRuntimeValuesRequest,
+    db: Session = Depends(get_db),
+    user: User = Depends(get_current_user),
+) -> ConnectorRuntimeRequirementsModel | JSONResponse:
+    """Accept ``context`` values for a task's connectors, merged key by key.
+
+    A key not yet stored is written; one already stored with the identical
+    value is a no-op; one already stored with a different value fails the
+    whole request with no partial write (``runtime_context_immutable``,
+    409). There is no override switch: a stored value is never replaced.
+    ``secrets``/``auth_selector`` are out of scope this phase and rejected
+    at the request-shape level (``extra="forbid"``), not accepted and
+    ignored.
+
+    Access is the same plain task ownership the task-keyed read endpoint
+    applies -- ``Task.user_id == current_user.id`` in the query that loads
+    the task, with no admin exception -- so a task that does not exist and
+    one that is not the caller's own answer the same 404.
+
+    On success, the response is the same requirements report the read
+    endpoints return, reflecting exactly what was just written -- not the
+    request's own echo, and not whatever the read endpoints would have
+    said before this call. A 200 here means only that the submitted keys
+    were merged in; it says nothing about whether every required input is
+    now present, which is what the response's own ``satisfied`` fields
+    answer.
+
+    Every failure -- validation, a stored-value conflict, or a concurrent
+    write racing this one to the same row -- is rendered through
+    ``_connector_runtime_error_response`` rather than the plain-``detail``
+    ``HTTPException`` the two read endpoints above use, because a caller
+    needs the structured ``code``/``details.reason`` to decide how to
+    recover (retry, refresh and drop already-satisfied keys, or give up),
+    not just a status code.
+    """
+
+    task = db.query(Task).filter(Task.id == task_id, Task.user_id == user.id).first()
+    if task is None:
+        raise HTTPException(status_code=404, detail="Task not found")
+    # The connector scope this endpoint writes into, and reports on, must
+    # be the scope a turn would actually run under, so the agent is
+    # resolved by the same two calls the per-turn tool build makes for
+    # this task, in the same order -- the identical pair the task-keyed
+    # read endpoint above uses, so neither endpoint can answer with a
+    # connector set the other would not. Reading the agent row directly
+    # would key team-shared connectors on the raw row's team even where
+    # the runtime resolves the agent to None, and resolving with no
+    # workforce runtime would drop the team of a workforce manager agent
+    # whose run the runtime does find. Here the scope decides not only
+    # what the response lists but which connectors the caller may write
+    # to at all, so neither the over-report nor the under-report is
+    # acceptable.
+    workforce_runtime = resolve_workforce_task_runtime(db, task)
+    agent = _load_agent_for_task_runtime(db, task, workforce_runtime)
+    try:
+        requirements = apply_task_connector_runtime_context_values(
+            db=db, task=task, agent=agent, payload_items=request.items
+        )
+    except ConnectorRuntimeError as exc:
+        db.rollback()
+        return _connector_runtime_error_response(exc)
+    db.commit()
+    return requirements
+
+
 @chat_router.delete("/task/{task_id}")
 async def delete_task(
     task_id: int,

src/xagent/web/schemas/connector_runtime.py

@@ -1,25 +1,25 @@
-"""Connector runtime requirements: the shared response shape both read
-endpoints return.
-
-The agent-keyed and task-keyed read endpoints both return this same
-requirements report -- which runtime inputs a task's (or a prospective
-task's) connectors declare, and whether each one already has a value --
-never a stored value itself, and never a connector's transport or
-authentication configuration -- the same shape from both, with one field,
-``satisfied``, answering a different question on each; see
+"""Connector runtime requirements: shared response shape and the values
+request body.
+
+Four producers share the response shape: the agent-keyed and task-keyed
+read endpoints, the task-create response, and the values endpoint's 200
+response. All four describe a requirements report -- which runtime inputs
+a task's (or a prospective task's) connectors declare, and whether each
+one already has a value -- never a stored value itself, and never a
+connector's transport or authentication configuration. One field,
+``satisfied``, answers a different question depending on the producer; see
 ``ConnectorRuntimeRequirementsModel``.
 
-Placed in its own module rather than ``schemas/chat.py`` because a values-
-submission endpoint lands on top of it shortly and will share this same
-response shape as its own 200 body; putting it here now avoids a later
-move that would touch every existing importer.
+Placed in its own module rather than ``schemas/chat.py`` or ``schemas/v1.py``
+because it has more than one audience: folding it into either of those
+modules would couple that module's own audience to the others.
 """
 
 from __future__ import annotations
 
 from typing import Literal
 
-from pydantic import BaseModel
+from pydantic import BaseModel, ConfigDict
 
 
 class ConnectorRuntimeRefModel(BaseModel):
@@ -107,3 +107,30 @@ class ConnectorRuntimeRequirementsModel(BaseModel):
     satisfied: bool
     secrets_expires_at: str | None
     connectors: list[ConnectorRuntimeConnectorModel]
+
+
+class ConnectorRuntimeValueItem(BaseModel):
+    """One connector's caller-supplied context values.
+
+    ``secrets`` and ``auth_selector`` are deliberately absent from this
+    phase's request shape: ``extra="forbid"`` turns either one into a 422
+    rather than silently accepting and discarding it.
+    """
+
+    model_config = ConfigDict(extra="forbid")
+
+    connector_ref: ConnectorRuntimeRefModel
+    context: dict[str, object] | None = None
+
+
+class ConnectorRuntimeValuesRequest(BaseModel):
+    """Body of ``POST /api/chat/task/{task_id}/connector-runtime-values``.
+
+    No override switch of any kind belongs here: a stored value is never
+    replaced, and ``extra="forbid"`` turns an attempt to add one (for
+    example ``if_absent`` or ``force``) into a 422.
+    """
+
+    model_config = ConfigDict(extra="forbid")
+
+    items: list[ConnectorRuntimeValueItem]