Audiobookshelf Monitoring Active User Streams - REST Sensor Not Working

Third party integrations
,
1

I would love monitor and track what user(s) are [actively] listening to books and what they are listening to.

I keep getting this response from API “No one is listening right now.” from my above Home-Assistant template and sensor. Any ideas?

Confirmed API in ABS and tested that it returns data:

localhost:~$ curl -H "Authorization: Bearer <removed_api>" https://absURL/API/sessions

My secrets.yaml :

# Audiobookshelf
audiobookshelf_sessions_url: https://absURL/api/sessions
audiobookshelf_token: <removedAPItoken>

Updated my home-assistant rest configuration:

rest:
  - resource: !secret audiobookshelf_sessions_url
    method: GET
    headers:
      Authorization: "Bearer !secret audiobookshelf_token"
      Accept: application/json
    scan_interval: 30
    sensor:
      - name: "Audiobookshelf Sessions Raw"
        value_template: >
          {{ value_json.sessions | length }}
        json_attributes:
          - sessions
          - total
          - page
          - itemsPerPage

Updated my home-assistant sensor template:

template:
  - sensor:
      - name: "Audiobookshelf Active Listeners"
        icon: mdi:headphones
        state: >
          {% set s = state_attr('sensor.audiobookshelf_sessions_raw', 'sessions') | default([]) %}
          {{ s | map(attribute='user.username') | unique | list | length }}
        attributes:
          users: >
            {% set s = state_attr('sensor.audiobookshelf_sessions_raw', 'sessions') | default([]) %}
            {{ s | map(attribute='user.username') | unique | list }}
          titles: >
            {% set s = state_attr('sensor.audiobookshelf_sessions_raw', 'sessions') | default([]) %}
            {{ s | map(attribute='mediaMetadata.title') | unique | list }}

Still not working…

I see this error in the ABS logs:

2025-12-21 10:44:09.805

ERROR

Cannot validate socket - invalid token

I am so close…cCan someone help me figure this out?

My Github ABS discussion post: Home Assistant / API for User Activity · advplyr/audiobookshelf · Discussion #4912 · GitHub