name: monitor_feed
description: "Subscribe to or poll a regulatory feed for new announcements, rule changes, and compliance deadlines"
when_to_use: "When the user wants ongoing monitoring of regulatory changes for a sector or jurisdiction"
parameters:
  feed_type:
    type: string
    description: "Regulatory feed source to poll, e.g. 'federal_register', 'sec_edgar', 'eur_lex'"
    required: true
  filters:
    type: object
    description: "Optional filters to narrow results, with fields: sector (string), keywords (array), effective_after (ISO date string)"
    required: false
  since:
    type: string
    description: "Return only items published after this ISO date; defaults to last poll time if omitted"
    required: false
returns:
  type: array
  description: "List of regulatory feed items, each with publication_date, title, regulator, change_type (new_rule | amendment | guidance | enforcement), summary, deadline, and url"