You are analyzing a Jira Epic to find the task with the best return on investment (highest story points relative to effort/size) that is available to pick up.

Inputs

Provide via $ARGUMENTS:

• Epic URL or key — e.g., https://aircall-product.atlassian.net/browse/MES-3548 or just MES-3548

Example: /devflow:best-roi-task https://aircall-product.atlassian.net/browse/MES-3548

If no argument is provided, ask the user for the Epic URL or key.

Steps

1. Parse the Epic key. Extract from the argument:

   • If URL: parse the key from the path (e.g., MES-3548 from .../browse/MES-3548)
   • If already a key (matches [A-Z]+-\d+): use directly

2. Fetch all child issues using Jira MCP:

   Use mcp__claude_ai_Atlassian__searchJiraIssuesUsingJql with:

   • cloudId: the Atlassian site URL from the epic URL, or default to aircall-product.atlassian.net
   • jql: "Epic Link" = <EPIC_KEY> ORDER BY created ASC
   • fields: ["summary", "status", "assignee", "customfield_10028", "customfield_10188", "issuetype", "issuelinks"]
   • maxResults: 50

3. Analyze blockers. For each task, inspect issuelinks for "Blocks" relationships:

   • Look for links where type.name is "Blocks" and the task appears in outwardIssue (meaning another issue blocks it) — specifically, links with type.inward = "is blocked by" where the current task is the inward side.
   • In practice: check for links where inwardIssue.key matches the current task (the current task "is blocked by" the outwardIssue), OR where outwardIssue exists and type.outward = "blocks" (meaning the linked issue blocks the current task).
   • For each blocker found, note its key and status.
   • A task is unblocked if it has no blockers, OR all its blockers are in status category "done" or status name "In Code Review" or later (i.e., statusCategory.key is "done" or status name contains "Review").

4. Filter to eligible tasks. Only include tasks where:

   • assignee is null (unassigned)
   • status.statusCategory.key is "new" (To Do) — this catches any status name that maps to the "To Do" category
   • The task is unblocked (no blockers, or all blockers are done / in code review)

   Tasks that match the first two criteria but ARE blocked should be shown separately (see step 6).

5. Calculate ROI score for each eligible task:

   Map t-shirt size (customfield_10188.value) to effort:

   Size	Effort
   XS	1
   S	2
   M	3
   L	5
   XL	8

   Story points come from customfield_10028.

   ROI score = story_points / effort. If story points are null/0, score is 0.

6. Present results sorted by ROI score descending:

   ## Best ROI Tasks in <EPIC_KEY>
   
   | Rank | Task | Summary | Points | Size | ROI Score | Blocked By |
   |------|------|---------|--------|------|-----------|------------|
   | 1    | ...  | ...     | ...    | ...  | ...       | — (or blocker key + status) |
   
   ### Recommendation
   **<TASK_KEY>** — "<summary>" — <points> points, size <size> (ROI: <score>)

   The Blocked By column shows:

   • — if the task has no blockers
   • <KEY> (Done) or <KEY> (In Code Review) if it had blockers but they're all resolved/nearly resolved

   If no eligible tasks are found, report:

   No unassigned To Do tasks found in epic <EPIC_KEY>. All tasks are either assigned, in progress, or blocked.

7. Show blocked tasks that would otherwise be eligible (unassigned + To Do) but have unresolved blockers:

   ### Blocked tasks (unassigned, To Do, but blocked)
   | Task | Summary | Points | Size | Blocked By |
   |------|---------|--------|------|------------|
   | ...  | ...     | ...    | ...  | <KEY> (<status>) |

   This helps the user see what's coming next once blockers clear.

8. Show other non-eligible tasks (assigned or in progress) for the full picture:

   ### Other tasks (assigned or in progress)
   | Task | Summary | Points | Size | Status | Assignee |

Important

• Only recommend tasks that are unassigned AND in To Do status AND unblocked. Tasks that are assigned, in progress, in code review, done, or blocked are excluded from the ROI ranking.
• A blocker is considered resolved if its status is "Done" or "In Code Review" (or any status in the done category). Only tasks with ALL blockers resolved count as unblocked.
• If multiple tasks have the same ROI score, prefer the one with more story points (higher absolute value).
• The customfield_10028 field is story points and customfield_10188 is t-shirt size — these are Jira custom field IDs specific to the Aircall Jira instance. Other instances may use different field IDs.
• Blocker relationships use the "Blocks" link type in Jira. The issuelinks field contains both inward and outward links — check for links where the current task is blocked by another issue.

$ARGUMENTS