Fix a tool's parameters from the connector drawer

Under Customize, each action now opens its parameters. Each one is either
left to the AI or set to Always use a value, which is sent on every call
and never shown to the AI. Actions with fixed values carry a small count.

frontend/src/api/endpoints.ts

@@ -123,6 +123,8 @@ const endpoints = {
       `/api/connections/${encodeURIComponent(id)}/tools/${encodeURIComponent(toolId)}/permissions`,
     CONNECTION_REPOSITORIES: (id: string) =>
       `/api/connections/${encodeURIComponent(id)}/repositories`,
+    CONNECTION_TOOL_PARAMETERS: (id: string, toolId: string) =>
+      `/api/connections/${encodeURIComponent(id)}/tools/${encodeURIComponent(toolId)}/parameters`,
     CONNECTIONS_CLAIM: '/api/connections/claim',
     TOOL_CREDENTIAL_MODE: (toolId: string) =>
       `/api/connections/tools/${encodeURIComponent(toolId)}/credential-mode`,

frontend/src/api/services/connectorsService.ts

@@ -111,6 +111,21 @@ const connectorsService = {
         token,
       ),
     ),
+  /** Fix parameters to a value (`null` lets the AI decide again). */
+  setToolParameters: async (
+    id: string,
+    toolId: string,
+    action: string,
+    parameters: Record<string, string | number | boolean | null>,
+    token: string | null,
+  ) =>
+    json(
+      await apiClient.put(
+        endpoints.USER.CONNECTION_TOOL_PARAMETERS(id, toolId),
+        { action, parameters },
+        token,
+      ),
+    ),
   setCredentialMode: async (
     toolId: string,
     mode: 'owner' | 'member',

frontend/src/connectors/ActionParameters.tsx

@@ -0,0 +1,157 @@
+import { useEffect, useState } from 'react';
+import { useTranslation } from 'react-i18next';
+
+import { Button } from '../components/ui/button';
+import { Input } from '../components/ui/input';
+import { ToggleGroup, ToggleGroupItem } from '../components/ui/toggle-group';
+import type { ActionParameter } from './types';
+
+type Mode = 'ai' | 'fixed';
+export type ParameterValue = string | number | boolean | null;
+
+const shown = (parameter: ActionParameter) =>
+  parameter.fixed && parameter.value !== null ? String(parameter.value) : '';
+
+function ParameterRow({
+  parameter,
+  readOnly,
+  onSave,
+}: {
+  parameter: ActionParameter;
+  readOnly: boolean;
+  onSave: (value: ParameterValue) => Promise<boolean>;
+}) {
+  const { t } = useTranslation();
+  const saved = shown(parameter);
+  const [mode, setMode] = useState<Mode>(parameter.fixed ? 'fixed' : 'ai');
+  const [draft, setDraft] = useState(saved);
+  const [saving, setSaving] = useState(false);
+  // A save (here or elsewhere) brings the stored value back.
+  useEffect(() => {
+    setMode(parameter.fixed ? 'fixed' : 'ai');
+    setDraft(shown(parameter));
+  }, [parameter]);
+
+  const save = async (value: ParameterValue) => {
+    setSaving(true);
+    const ok = await onSave(value);
+    setSaving(false);
+    if (!ok) {
+      setMode(parameter.fixed ? 'fixed' : 'ai');
+      setDraft(saved);
+    }
+  };
+
+  const choiceLabel = t('settings.connectors.parameters.choiceLabel', {
+    parameter: parameter.name,
+    interpolation: { escapeValue: false },
+  });
+
+  return (
+    <li data-parameter={parameter.name} className="flex flex-col gap-2">
+      <div className="flex flex-wrap items-center justify-between gap-2">
+        <div className="min-w-0">
+          <p className="text-foreground font-mono text-xs wrap-anywhere">
+            {parameter.name}
+          </p>
+          {parameter.description && (
+            <p
+              className="text-muted-foreground line-clamp-2 text-xs"
+              title={parameter.description}
+            >
+              {parameter.description}
+            </p>
+          )}
+        </div>
+        <div className="bg-muted rounded-full p-1">
+          <ToggleGroup
+            type="single"
+            size="xs"
+            value={mode}
+            disabled={readOnly || saving}
+            aria-label={choiceLabel}
+            onValueChange={(value) => {
+              if (!value) return;
+              setMode(value as Mode);
+              // Releasing a fixed value saves at once; fixing one waits for it.
+              if (value === 'ai' && parameter.fixed) save(null);
+            }}
+          >
+            <ToggleGroupItem value="ai" data-mode="ai">
+              {t('settings.connectors.parameters.ai')}
+            </ToggleGroupItem>
+            <ToggleGroupItem value="fixed" data-mode="fixed">
+              {t('settings.connectors.parameters.fixed')}
+            </ToggleGroupItem>
+          </ToggleGroup>
+        </div>
+      </div>
+      {mode === 'fixed' && (
+        <form
+          className="flex items-center gap-2"
+          onSubmit={(event) => {
+            event.preventDefault();
+            if (draft.trim() && draft !== saved) save(draft);
+          }}
+        >
+          <Input
+            size="sm"
+            className="flex-1"
+            aria-label={t('settings.connectors.parameters.valueLabel', {
+              parameter: parameter.name,
+              interpolation: { escapeValue: false },
+            })}
+            value={draft}
+            disabled={readOnly}
+            onChange={(event) => setDraft(event.target.value)}
+          />
+          <Button
+            type="submit"
+            size="sm"
+            shape="pill"
+            variant="outline"
+            loading={saving}
+            disabled={readOnly || !draft.trim() || draft === saved}
+          >
+            {t('settings.connectors.parameters.save')}
+          </Button>
+        </form>
+      )}
+    </li>
+  );
+}
+
+/**
+ * One action's parameters, each left to the AI or fixed to a value that is
+ * sent on every call and never shown to the AI (a Telegram chat, a project
+ * key). Letting the AI decide saves at once; a fixed value saves with Save.
+ */
+export default function ActionParameters({
+  parameters,
+  readOnly = false,
+  onSave,
+}: {
+  parameters: ActionParameter[];
+  readOnly?: boolean;
+  /** Saves `{name: value}`; resolves false when the save failed. */
+  onSave: (changes: Record<string, ParameterValue>) => Promise<boolean>;
+}) {
+  const { t } = useTranslation();
+  return (
+    <div className="flex flex-col gap-3">
+      <ul className="flex flex-col gap-4">
+        {parameters.map((parameter) => (
+          <ParameterRow
+            key={parameter.name}
+            parameter={parameter}
+            readOnly={readOnly}
+            onSave={(value) => onSave({ [parameter.name]: value })}
+          />
+        ))}
+      </ul>
+      <p className="text-muted-foreground text-xs">
+        {t('settings.connectors.parameters.hint')}
+      </p>
+    </div>
+  );
+}

frontend/src/connectors/ToolPermissions.test.tsx

@@ -10,12 +10,15 @@ vi.mock('react-i18next', () => ({
   }),
 }));
 
-const connectors = vi.hoisted(() => ({ setToolPermissions: vi.fn() }));
+const connectors = vi.hoisted(() => ({
+  setToolPermissions: vi.fn(),
+  setToolParameters: vi.fn(),
+}));
 vi.mock('../api/services/connectorsService', () => ({ default: connectors }));
 
 import actionToastReducer from '../notifications/actionToastSlice';
 import ToolPermissions from './ToolPermissions';
-import type { ConnectionTool } from './types';
+import type { ActionParameter, ConnectionTool } from './types';
 
 Object.assign(globalThis, { IS_REACT_ACT_ENVIRONMENT: true });
 
@@ -23,7 +26,21 @@ const action = (
   name: string,
   access: 'read' | 'write',
   permission: 'always' | 'ask' | 'off',
-) => ({ name, access, permission, description: `Does ${name}.` });
+  parameters: ActionParameter[] = [],
+) => ({ name, access, permission, description: `Does ${name}.`, parameters });
+
+const param = (
+  name: string,
+  fixed: boolean,
+  value: ActionParameter['value'] = null,
+): ActionParameter => ({
+  name,
+  description: `The ${name}.`,
+  type: 'string',
+  required: false,
+  fixed,
+  value,
+});
 
 const tool = (actions: ReturnType<typeof action>[]): ConnectionTool =>
   ({
@@ -127,6 +144,105 @@ describe('ToolPermissions', () => {
     expect(container.textContent).not.toContain('Old one');
   });
 
+  const button = (text: string) =>
+    Array.from(container.querySelectorAll('button')).find(
+      (b) => b.textContent === text,
+    )!;
+  const typeInto = (input: HTMLInputElement, value: string) => {
+    const setter = Object.getOwnPropertyDescriptor(
+      HTMLInputElement.prototype,
+      'value',
+    )!.set!;
+    setter.call(input, value);
+    input.dispatchEvent(new Event('input', { bubbles: true }));
+  };
+
+  it('marks an action that has fixed values', async () => {
+    await render(
+      tool([
+        action('telegram_send_message', 'write', 'ask', [
+          param('text', false),
+          param('chat_id', true, '-100'),
+        ]),
+      ]),
+    );
+    expect(container.textContent).toContain(
+      'settings.connectors.parameters.fixedCount:1',
+    );
+  });
+
+  it('fixes a parameter to a value the AI cannot change', async () => {
+    const send = action('telegram_send_message', 'write', 'ask', [
+      param('text', false),
+      param('chat_id', false),
+    ]);
+    connectors.setToolParameters.mockResolvedValue({
+      success: true,
+      tool: tool([
+        {
+          ...send,
+          parameters: [param('text', false), param('chat_id', true, '-100')],
+        },
+      ]),
+    });
+    await render(tool([send]));
+    await act(async () =>
+      button('settings.connectors.parameters.show').click(),
+    );
+    const row = container.querySelector<HTMLElement>(
+      '[data-parameter="chat_id"]',
+    )!;
+    await act(async () =>
+      row.querySelector<HTMLButtonElement>('[data-mode="fixed"]')!.click(),
+    );
+    const input = row.querySelector<HTMLInputElement>('input')!;
+    await act(async () => typeInto(input, '-100'));
+    await act(async () =>
+      button('settings.connectors.parameters.save').click(),
+    );
+    expect(connectors.setToolParameters).toHaveBeenCalledWith(
+      'conn-1',
+      'tool-1',
+      'telegram_send_message',
+      { chat_id: '-100' },
+      null,
+    );
+    expect(container.textContent).toContain(
+      'settings.connectors.parameters.fixedCount:1',
+    );
+  });
+
+  it('lets the AI decide a fixed parameter again', async () => {
+    connectors.setToolParameters.mockResolvedValue({
+      success: true,
+      tool: tool([]),
+    });
+    await render(
+      tool([
+        action('telegram_send_message', 'write', 'ask', [
+          param('chat_id', true, '-100'),
+        ]),
+      ]),
+    );
+    await act(async () =>
+      button('settings.connectors.parameters.show').click(),
+    );
+    const row = container.querySelector<HTMLElement>(
+      '[data-parameter="chat_id"]',
+    )!;
+    expect(row.querySelector<HTMLInputElement>('input')!.value).toBe('-100');
+    await act(async () =>
+      row.querySelector<HTMLButtonElement>('[data-mode="ai"]')!.click(),
+    );
+    expect(connectors.setToolParameters).toHaveBeenCalledWith(
+      'conn-1',
+      'tool-1',
+      'telegram_send_message',
+      { chat_id: null },
+      null,
+    );
+  });
+
   it('says what Ask first means outside chat', async () => {
     await render(tool([action('create_issue', 'write', 'ask')]));
     expect(container.textContent).toContain(

frontend/src/connectors/ToolPermissions.tsx

@@ -3,6 +3,7 @@ import { useTranslation } from 'react-i18next';
 import { useDispatch, useSelector } from 'react-redux';
 
 import connectorsService from '../api/services/connectorsService';
+import { Badge } from '../components/ui/badge';
 import { Button } from '../components/ui/button';
 import { Card } from '../components/ui/card';
 import { SectionHeader } from '../components/ui/section-header';
@@ -17,6 +18,7 @@ import { ToggleGroup, ToggleGroupItem } from '../components/ui/toggle-group';
 import { showActionToast } from '../notifications/actionToastSlice';
 import { selectToken } from '../preferences/preferenceSlice';
 import { formatCount } from '../utils/dateTimeUtils';
+import ActionParameters, { type ParameterValue } from './ActionParameters';
 import { actionTitle } from './i18n';
 import type {
   ActionPermission,
@@ -29,11 +31,105 @@ const PERMISSIONS: ActionPermission[] = ['always', 'ask', 'off'];
 /** Longer groups start folded to their one group choice. */
 const FOLD_AFTER = 5;
 
+/**
+ * One action under Customize: its name, what it does and its permission,
+ * with its parameters one click away and a count of the values fixed there.
+ */
+function ActionRow({
+  action,
+  readOnly,
+  onPermission,
+  onParameters,
+}: {
+  action: ConnectionToolAction;
+  readOnly: boolean;
+  onPermission: (permission: ActionPermission) => void;
+  onParameters: (changes: Record<string, ParameterValue>) => Promise<boolean>;
+}) {
+  const { t } = useTranslation();
+  const [showParameters, setShowParameters] = useState(false);
+  const parameters = action.parameters ?? [];
+  const fixedCount = parameters.filter((parameter) => parameter.fixed).length;
+  return (
+    <li className="flex flex-col gap-3">
+      <div className="flex items-start justify-between gap-3">
+        <div className="flex min-w-0 flex-col items-start">
+          <div className="flex max-w-full items-center gap-2">
+            <p className="text-foreground truncate text-sm" title={action.name}>
+              {actionTitle(action.name)}
+            </p>
+            {fixedCount > 0 && (
+              <Badge variant="neutral">
+                {t('settings.connectors.parameters.fixedCount', {
+                  count: fixedCount,
+                  formatted: formatCount(fixedCount),
+                })}
+              </Badge>
+            )}
+          </div>
+          {action.description && (
+            <p
+              className="text-muted-foreground line-clamp-2 text-xs"
+              title={action.description}
+            >
+              {action.description}
+            </p>
+          )}
+          {parameters.length > 0 && (
+            <Button
+              type="button"
+              variant="link"
+              size="inline"
+              className="mt-1"
+              aria-expanded={showParameters}
+              onClick={() => setShowParameters(!showParameters)}
+            >
+              {showParameters
+                ? t('settings.connectors.parameters.hide')
+                : t('settings.connectors.parameters.show')}
+            </Button>
+          )}
+        </div>
+        <Select
+          value={action.permission}
+          disabled={readOnly}
+          onValueChange={(value) => onPermission(value as ActionPermission)}
+        >
+          <SelectTrigger
+            size="sm"
+            className="w-32 shrink-0"
+            aria-label={t('settings.connectors.permission.label', {
+              action: actionTitle(action.name),
+            })}
+          >
+            <SelectValue />
+          </SelectTrigger>
+          <SelectContent>
+            {PERMISSIONS.map((permission) => (
+              <SelectItem key={permission} value={permission}>
+                {t(`settings.connectors.permission.${permission}`)}
+              </SelectItem>
+            ))}
+          </SelectContent>
+        </Select>
+      </div>
+      {showParameters && (
+        <ActionParameters
+          parameters={parameters}
+          readOnly={readOnly}
+          onSave={onParameters}
+        />
+      )}
+    </li>
+  );
+}
+
 /**
  * One tool's actions in two groups, what it looks up and what it does, each
  * set at once to Allow / Ask first / Off; single actions can differ under
- * Customize. Changes save immediately; a failed save puts the previous
- * choices back and says so.
+ * Customize, where each action also opens its parameters to fix values the
+ * AI must always use. Changes save immediately; a failed save puts the
+ * previous choices back and says so.
  */
 export default function ToolPermissions({
   connectionId,
@@ -83,6 +179,33 @@ export default function ToolPermissions({
       });
   };
 
+  const setParameters = async (
+    actionName: string,
+    changes: Record<string, ParameterValue>,
+  ) => {
+    try {
+      const data = await connectorsService.setToolParameters(
+        connectionId,
+        tool.id,
+        actionName,
+        changes,
+        token,
+      );
+      if (!data?.success) throw new Error('save failed');
+      setActions(data.tool.actions);
+      onChange?.(data.tool);
+      return true;
+    } catch {
+      dispatch(
+        showActionToast({
+          variant: 'destructive',
+          message: t('settings.connectors.parameters.saveFailed'),
+        }),
+      );
+      return false;
+    }
+  };
+
   const groups = (['read', 'write'] as const)
     .map((access) => ({
       access,
@@ -177,53 +300,17 @@ export default function ToolPermissions({
             {open && (
               <ul className="flex flex-col gap-3">
                 {group.actions.map((action) => (
-                  <li
+                  <ActionRow
                     key={action.name}
-                    className="flex items-start justify-between gap-3"
-                  >
-                    <div className="min-w-0">
-                      <p
-                        className="text-foreground truncate text-sm"
-                        title={action.name}
-                      >
-                        {actionTitle(action.name)}
-                      </p>
-                      {action.description && (
-                        <p
-                          className="text-muted-foreground line-clamp-2 text-xs"
-                          title={action.description}
-                        >
-                          {action.description}
-                        </p>
-                      )}
-                    </div>
-                    <Select
-                      value={action.permission}
-                      disabled={readOnly}
-                      onValueChange={(value) =>
-                        setPermissions({
-                          [action.name]: value as ActionPermission,
-                        })
-                      }
-                    >
-                      <SelectTrigger
-                        size="sm"
-                        className="w-32 shrink-0"
-                        aria-label={t('settings.connectors.permission.label', {
-                          action: actionTitle(action.name),
-                        })}
-                      >
-                        <SelectValue />
-                      </SelectTrigger>
-                      <SelectContent>
-                        {PERMISSIONS.map((permission) => (
-                          <SelectItem key={permission} value={permission}>
-                            {t(`settings.connectors.permission.${permission}`)}
-                          </SelectItem>
-                        ))}
-                      </SelectContent>
-                    </Select>
-                  </li>
+                    action={action}
+                    readOnly={readOnly}
+                    onPermission={(permission) =>
+                      setPermissions({ [action.name]: permission })
+                    }
+                    onParameters={(changes) =>
+                      setParameters(action.name, changes)
+                    }
+                  />
                 ))}
               </ul>
             )}

frontend/src/connectors/types.ts

@@ -92,11 +92,22 @@ export type Connection = {
 export type ActionAccess = 'read' | 'write';
 export type ActionPermission = 'always' | 'ask' | 'off';
 
+export type ActionParameter = {
+  name: string;
+  description: string;
+  type: string;
+  required: boolean;
+  /** Sent with `value` on every call; the AI never sees it. */
+  fixed: boolean;
+  value: string | number | boolean | null;
+};
+
 export type ConnectionToolAction = {
   name: string;
   description: string;
   access: ActionAccess;
   permission: ActionPermission;
+  parameters?: ActionParameter[];
 };
 
 export type ConnectionTool = {

frontend/src/locale/de.json

@@ -1344,6 +1344,19 @@
         "repositories": "Repositorys",
         "updated": "Aktualisiert {{date}}",
         "loadFailed": "Deine Repositorys konnten nicht geladen werden."
+      },
+      "parameters": {
+        "show": "Parameter",
+        "hide": "Parameter ausblenden",
+        "fixedCount_one": "{{formatted}} festgelegt",
+        "fixedCount_other": "{{formatted}} festgelegt",
+        "ai": "KI entscheidet",
+        "fixed": "Immer verwenden",
+        "choiceLabel": "Wie {{parameter}} ausgefüllt wird",
+        "valueLabel": "Wert für {{parameter}}",
+        "save": "Speichern",
+        "saveFailed": "Der Wert konnte nicht gespeichert werden. Versuche es erneut.",
+        "hint": "Ein Wert mit „Immer verwenden“ wird bei jedem Aufruf gesendet. Die KI sieht ihn nicht und kann ihn nicht ändern."
       }
     }
   },

frontend/src/locale/en.json

@@ -1350,6 +1350,19 @@
         "repositories": "Repositories",
         "updated": "Updated {{date}}",
         "loadFailed": "Could not load your repositories."
+      },
+      "parameters": {
+        "show": "Parameters",
+        "hide": "Hide parameters",
+        "fixedCount_one": "{{formatted}} fixed",
+        "fixedCount_other": "{{formatted}} fixed",
+        "ai": "Let AI decide",
+        "fixed": "Always use",
+        "choiceLabel": "How {{parameter}} is filled in",
+        "valueLabel": "Value for {{parameter}}",
+        "save": "Save",
+        "saveFailed": "Could not save the value. Try again.",
+        "hint": "A value set to Always use is sent on every call. The AI never sees it and cannot change it."
       }
     }
   },

frontend/src/locale/es.json

@@ -1344,6 +1344,19 @@
         "repositories": "Repositorios",
         "updated": "Actualizado {{date}}",
         "loadFailed": "No se pudieron cargar tus repositorios."
+      },
+      "parameters": {
+        "show": "Parámetros",
+        "hide": "Ocultar parámetros",
+        "fixedCount_one": "{{formatted}} fijo",
+        "fixedCount_other": "{{formatted}} fijos",
+        "ai": "Que decida la IA",
+        "fixed": "Usar siempre",
+        "choiceLabel": "Cómo se rellena {{parameter}}",
+        "valueLabel": "Valor de {{parameter}}",
+        "save": "Guardar",
+        "saveFailed": "No se pudo guardar el valor. Inténtalo de nuevo.",
+        "hint": "Un valor con «Usar siempre» se envía en cada llamada. La IA nunca lo ve ni puede cambiarlo."
       }
     }
   },

frontend/src/locale/jp.json

@@ -1326,6 +1326,18 @@
         "repositories": "リポジトリ",
         "updated": "{{date}} に更新",
         "loadFailed": "リポジトリを読み込めませんでした。"
+      },
+      "parameters": {
+        "show": "パラメーター",
+        "hide": "パラメーターを隠す",
+        "fixedCount_other": "{{formatted}} 件固定",
+        "ai": "AI に任せる",
+        "fixed": "常に使用",
+        "choiceLabel": "{{parameter}} の入力方法",
+        "valueLabel": "{{parameter}} の値",
+        "save": "保存",
+        "saveFailed": "値を保存できませんでした。もう一度お試しください。",
+        "hint": "「常に使用」の値は毎回の呼び出しで送信されます。AI はこの値を見ることも変更することもできません。"
       }
     }
   },

frontend/src/locale/ru.json

@@ -1418,6 +1418,21 @@
         "repositories": "Репозитории",
         "updated": "Обновлён {{date}}",
         "loadFailed": "Не удалось загрузить ваши репозитории."
+      },
+      "parameters": {
+        "show": "Параметры",
+        "hide": "Скрыть параметры",
+        "fixedCount_one": "{{formatted}} задан",
+        "fixedCount_few": "{{formatted}} задано",
+        "fixedCount_many": "{{formatted}} задано",
+        "fixedCount_other": "{{formatted}} задано",
+        "ai": "Решает ИИ",
+        "fixed": "Всегда использовать",
+        "choiceLabel": "Как заполняется {{parameter}}",
+        "valueLabel": "Значение {{parameter}}",
+        "save": "Сохранить",
+        "saveFailed": "Не удалось сохранить значение. Попробуйте ещё раз.",
+        "hint": "Значение «Всегда использовать» отправляется при каждом вызове. ИИ его не видит и не может изменить."
       }
     }
   },

frontend/src/locale/zh-TW.json

@@ -1326,6 +1326,18 @@
         "repositories": "儲存庫",
         "updated": "更新於 {{date}}",
         "loadFailed": "無法載入你的儲存庫。"
+      },
+      "parameters": {
+        "show": "參數",
+        "hide": "隱藏參數",
+        "fixedCount_other": "已固定 {{formatted}} 個",
+        "ai": "由 AI 決定",
+        "fixed": "一律使用",
+        "choiceLabel": "{{parameter}} 的填寫方式",
+        "valueLabel": "{{parameter}} 的值",
+        "save": "儲存",
+        "saveFailed": "無法儲存此值。請再試一次。",
+        "hint": "設為「一律使用」的值會在每次呼叫時送出。AI 看不到它，也無法變更。"
       }
     }
   },

frontend/src/locale/zh.json

@@ -1326,6 +1326,18 @@
         "repositories": "仓库",
         "updated": "更新于 {{date}}",
         "loadFailed": "无法加载你的仓库。"
+      },
+      "parameters": {
+        "show": "参数",
+        "hide": "隐藏参数",
+        "fixedCount_other": "已固定 {{formatted}} 个",
+        "ai": "由 AI 决定",
+        "fixed": "始终使用",
+        "choiceLabel": "{{parameter}} 的填写方式",
+        "valueLabel": "{{parameter}} 的值",
+        "save": "保存",
+        "saveFailed": "无法保存该值。请重试。",
+        "hint": "设为“始终使用”的值会在每次调用时发送。AI 看不到它，也无法更改。"
       }
     }
   },