Estimate Epic

Size Epics by Total Story Points

Overview

Set the Size (t-shirt size) field on OLS Epics based on the sum of story points across their child issues. This is a mechanical calculation, not a judgment call — the mapping is fixed.

Usage

/estimate-epic OLS-1234              # size one Epic
/estimate-epic OLS-1234 OLS-1235     # size multiple Epics
/estimate-epic                       # size ALL unsized open Epics

Also invoked automatically after creating a new Epic.

Size Mapping

Jira Field Reference

• Size field: customfield_10795 (dropdown)
• Option IDs: XS=12589, S=12588, M=12587, L=12586, XL=12585
• Story Points field: customfield_10028 (on child issues)
• Cloud ID: redhat.atlassian.net
• Epic Link field for JQL: "Epic Link" or parent

Workflow

Step 1: Determine target Epics

If arguments provided: Extract all OLS-XXXX keys from the arguments.

If no arguments: Query Jira for all unsized open Epics:

project = OLS AND issuetype = Epic AND resolution = Unresolved AND "Size[Dropdown]" is EMPTY

Step 2: For each Epic

2a. Fetch child issues and their story points

Use searchJiraIssuesUsingJql with:

• jql: "Epic Link" = OLS-XXXX OR parent = OLS-XXXX
• fields: ["summary", "customfield_10028", "issuetype"]
• maxResults: 100

If more than 100 children, paginate.

2b. Sum story points

• Sum customfield_10028 across all children
• Count children with null/missing SP separately (for warning)

2c. Map to t-shirt size

Apply the mapping table above. Use this logic:

if total <= 10: XS (option 12589)
elif total <= 20: S (option 12588)
elif total <= 40: M (option 12587)
elif total <= 60: L (option 12586)
else: XL (option 12585)

2d. Set Size on the Epic

Use editJiraIssue with:

• cloudId: redhat.atlassian.net
• issueIdOrKey: the Epic key
• fields: {"customfield_10795": {"id": "<option_id>"}}

Step 3: Report to user

For each Epic, report one line:

• Epic key and summary
• Child count, total SP, and assigned size
• If any children lack SP: warn with count (e.g., "3 of 12 children unpointed")

For bulk operations, also report a summary line at the end (e.g., "Sized 15 Epics: 3 XS, 5 S, 4 M, 2 L, 1 XL").