Tool use outputs JSON but doesn't call the tool

[SteveCaruso]

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Steps to reproduce

1. Request tool use.

Expected behaviour

Context agent should activate the tool and use it.

Actual behaviour

The tool's JSON call is output instead.

Server configuration

Web server: Apache

Database: MySQL

PHP version: Latest

Nextcloud version: 31.0.7

List of activated apps

Enabled:
  - activity: 4.0.0
  - admin_audit: 1.21.0
  - app_api: 5.0.2
  - assistant: 2.8.0
  - bookmarks: 15.2.0
  - bruteforcesettings: 4.0.0
  - calendar: 5.5.2
  - call_summary_bot: 3.1.0
  - checksum: 1.2.6
  - circles: 31.0.0
  - cloud_federation_api: 1.14.0
  - collectives: 3.1.2
  - comments: 1.21.0
  - contacts: 7.2.6
  - contactsinteraction: 1.12.0
  - context_chat: 4.4.1
  - cookbook: 0.11.3
  - dashboard: 7.11.0
  - dav: 1.33.0
  - deck: 1.15.2
  - external: 6.0.2
  - federatedfilesharing: 1.21.0
  - federation: 1.21.0
  - files: 2.3.1
  - files_downloadlimit: 4.0.0
  - files_external: 1.23.0
  - files_pdfviewer: 4.0.0
  - files_reminders: 1.4.0
  - files_sharing: 1.23.1
  - files_trashbin: 1.21.0
  - files_versions: 1.24.0
  - fileslibreofficeedit: 2.0.1
  - firstrunwizard: 4.0.0
  - flow_notifications: 2.0.1
  - forms: 5.1.2
  - groupfolders: 19.1.3
  - impersonate: 2.0.0
  - integration_mastodon: 3.2.1
  - integration_openai: 3.7.1
  - logreader: 4.0.0
  - lookup_server_connector: 1.19.0
  - memories: 7.6.2
  - news: 26.1.0
  - nextcloud_announcements: 3.0.0
  - notes: 4.12.3
  - notifications: 4.0.0
  - notify_push: 1.2.0
  - oauth2: 1.19.1
  - otpmanager: 0.5.4
  - password_policy: 3.0.0
  - passwords: 2025.7.20
  - phonetrack: 0.9.1
  - photos: 4.0.0
  - polls: 8.4.5
  - previewgenerator: 5.9.0
  - privacy: 3.0.0
  - profile: 1.0.0
  - provisioning_api: 1.21.0
  - recognize: 9.0.7
  - recommendations: 4.0.0
  - related_resources: 2.0.0
  - richdocuments: 8.7.4
  - richdocumentscode: 25.4.403
  - riotchat: 0.19.0
  - serverinfo: 3.0.0
  - settings: 1.14.0
  - sharebymail: 1.21.0
  - spreed: 21.1.4
  - support: 3.0.0
  - survey_client: 3.0.0
  - suspicious_login: 9.0.1
  - systemtags: 1.21.1
  - tables: 0.9.5
  - talk_matterbridge: 1.31.1026000
  - tasks: 0.16.1
  - text: 5.0.0
  - theming: 2.6.1
  - twofactor_backupcodes: 1.20.0
  - twofactor_nextcloud_notification: 5.0.0
  - twofactor_totp: 13.0.0-dev.0
  - updatenotification: 1.21.0
  - user_status: 1.11.0
  - viewer: 4.0.0
  - weather_status: 1.11.0
  - webhook_listeners: 1.2.0
  - workflowengine: 2.13.0
Disabled:
  - encryption: 2.19.0 (installed 2.19.0)
  - end_to_end_encryption: 1.17.0 (installed 1.17.0)
  - files_rightclick: 0.15.1 (installed 1.6.0)
  - mail: 5.3.2 (installed 5.3.2)
  - maps: 1.6.0 (installed 1.6.0)
  - user_ldap: 1.22.0
  - whiteboard: 1.1.3 (installed 1.1.3)

Nextcloud configuration

{
    "system": {
        "instanceid": "***REMOVED SENSITIVE VALUE***",
        "passwordsalt": "***REMOVED SENSITIVE VALUE***",
        "secret": "***REMOVED SENSITIVE VALUE***",
        "trusted_domains": [
            "***REMOVED SENSITIVE VALUE***"
        ],
        "datadirectory": "***REMOVED SENSITIVE VALUE***",
        "dbtype": "mysql",
        "version": "31.0.7.1",
        "overwrite.cli.url": "***REMOVED SENSITIVE VALUE***",
        "overwriteprotocol": "https",
        "htaccess.RewriteBase": "\/",
        "dbname": "***REMOVED SENSITIVE VALUE***",
        "dbhost": "***REMOVED SENSITIVE VALUE***",
        "dbport": "",
        "dbtableprefix": "oc_",
        "mysql.utf8mb4": true,
        "dbuser": "***REMOVED SENSITIVE VALUE***",
        "dbpassword": "***REMOVED SENSITIVE VALUE***",
        "installed": true,
        "maintenance": false,
        "theme": "",
        "loglevel": 0,
        "mail_smtpmode": "smtp",
        "mail_sendmailmode": "smtp",
        "memories.vod.path": "***REMOVED SENSITIVE VALUE***",
        "updater.release.channel": "stable",
        "memcache.local": "\\OC\\Memcache\\APCu",
        "memories.db.triggers.fcu": true,
        "app_install_overwrite": [
            "news",
            "talk_matterbridge",
            "otpmanager"
        ],
        "trusted_proxies": "***REMOVED SENSITIVE VALUE***",
        "maintenance_window_start": 1,
        "http:\/\/localhost:11434": true,
        "memories.index.path": "\/Photos\/",
        "preview_max_x": 1024,
        "preview_max_y": 1024,
        "memories.vod.disable": false,
        "memories.vod.ffmpeg": "\/usr\/bin\/ffmpeg",
        "memories.vod.ffprobe": "\/usr\/bin\/ffprobe",
        "memories.exiftool_no_local": true,
        "memories.vod.nvenc": true,
        "memcache.distributed": "\\OC\\Memcache\\Redis",
        "memcache.locking": "\\OC\\Memcache\\Redis",
        "redis": {
            "host": "***REMOVED SENSITIVE VALUE***",
            "port": 6379
        },
        "default_phone_region": "US",
        "files.chunked_upload.max_size": 0,
        "davstorage.request_timeout": 150
    }
}

Browser

N/A

[janepie]

Thanks for reporting! Which AI service and model are you using in your instance?

[SteveCaruso]

Local Ollama via OpenAI and LocalAI integration, running a version of gemma3 with tools.

[janepie]

The output looks like the model or Ollama is not using the correct format for a tool call, that's nothing we can fix on our side unfortunately. We get a "text answer" back from the provider and no tool call.

[janepie]

Does it happen every single time in the same format or can you sometimes use a tool?

[SteveCaruso]

Ah, makes sense.

No it hasn't worked with that model. I'll see if I can find another one with tool use that works and report back.

[janepie]

Hey @SteveCaruso, did you make it work or should we look into it again?

[SteveCaruso]

Hey @SteveCaruso, did you make it work or should we look into it again?

I need to upgrade to the latest version and test it, then I'll report back.