PROJECT MANAGEMENT

Circular Blocked-By Cycle Detector Across Linear Projects

Scans all open Linear issues nightly, builds a blocked-by dependency graph, and flags any circular chain (A blocks B blocks C blocks A) that can never resolve on its own.

CategoryProject Management
Enginesim
Difficultyintermediate
Triggerschedule
Steps6
Setup~15 min

How it runs

The automated pipeline, trigger to output.

  • TriggerNightly schedule fires
  • ActionFetch open issues + blocked-by links from LinearLinearLinear
  • LogicBuild dependency graph and detect cycles
  • LogicBranch: any cycle found?
  • ActionResolve assignees and project leads from LinearLinearLinear
  • OutputPost each cycle to Slack escalation channelSlack

What it does

A circular blocked-by chain is a silent project killer: every issue in the loop is waiting on another issue in the same loop, so none of them can ever start. This workflow walks the entire Linear dependency graph on a schedule, detects every cycle, and surfaces it to the right people before a sprint stalls.

When to use it

Run it when multiple teams file cross-project dependencies and no single person owns the whole graph. Ideal for orgs where Linear issues frequently carry "blocked by" links across team boundaries.

How it works

  1. 1A nightly schedule fires the run.
  2. 2Fetch all non-completed issues and their blocked-by relations from Linear.
  3. 3Build an in-memory directed graph and run cycle detection (DFS / Tarjan) to find every strongly-connected loop.
  4. 4A branch checks whether any cycle was found; if none, the run exits quietly.
  5. 5For each cycle, resolve the assignees and project leads of the involved issues.
  6. 6Post a formatted Slack message per cycle listing the loop path and tagging the leads to break it.

Set it up

What you configure once, before turning it on.

  1. 1
    Connect LinearIssues, projects, cycles, triage.
  2. 2
    Connect SlackChannels, DMs, threads, mentions.
  3. 3
    Set each agent's modelWe leave models unset so you pick the tier — fast + cheap, or top-quality.
  4. 4
    Tune it to your dataEdit the prompts, filters, and field mappings so it matches how your team works.
  5. 5
    Test, then turn it onRun once against a sample, confirm the output, then enable the trigger.

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