issue-prerequisite

name	issue-prerequisite
description	Use before starting ANY work - hard gate ensuring a GitHub issue exists, creating one if needed through user questioning
allowed-tools	["mcp__github__*"]
model	opus

Issue Prerequisite

Overview

No work without a GitHub issue. This is a hard gate.

Core principle: Every task, regardless of size, must have a corresponding GitHub issue.

Announce at start: "I'm checking for a GitHub issue before proceeding with any work."

The Gate

┌─────────────────────────────────────┐
│         WORK REQUESTED              │
└─────────────────┬───────────────────┘
                  │
                  ▼
        ┌─────────────────┐
        │ Issue provided? │
        └────────┬────────┘
                 │
       ┌─────────┴─────────┐
       │                   │
      Yes                  No
       │                   │
       ▼                   ▼
  ┌─────────┐      ┌─────────────┐
  │ Verify  │      │ Ask user or │
  │ issue   │      │ create issue│
  │ exists  │      └──────┬──────┘
  └────┬────┘             │
       │                  │
       ▼                  ▼
  ┌──────────────────────────────┐
  │     Issue confirmed?         │
  │   (exists and accessible)    │
  └─────────────┬────────────────┘
                │
       ┌────────┴────────┐
       │                 │
      Yes                No
       │                 │
       ▼                 ▼
   PROCEED            STOP
   WITH WORK       (Cannot proceed)

When Issue is Provided

Verify the issue exists and is accessible:

# Verify issue exists
gh issue view [ISSUE_NUMBER] --json number,title,state,body

# Check issue is in the correct repository
gh issue view [ISSUE_NUMBER] --json url

If issue doesn't exist or is inaccessible:

• Report error to user
• Do not proceed

When No Issue is Provided

Option 1: User has existing issue

Ask: "What's the GitHub issue number for this work?"

Option 2: Need to create issue

Gather information to create an issue:

I need to create a GitHub issue before starting this work.

**Please provide or confirm:**

1. **Title:** [What should this issue be called?]

2. **Description:** [What should this issue deliver?]

3. **Acceptance Criteria:**
   - [ ] [First verifiable behavior]
   - [ ] [Second verifiable behavior]

4. **Type:** Feature / Bug / Chore / Research / Spike

5. **Priority:** Critical / High / Medium / Low

Creating the Issue

Once information is gathered:

# Create the issue
ISSUE_URL=$(gh issue create \
  --title "[Type] Title here" \
  --body "## Description

[Description]

## Acceptance Criteria

- [ ] Criterion 1
- [ ] Criterion 2

## Verification Steps

1. Step 1
2. Step 2

## Technical Notes

[Any technical context]" 2>&1 | tail -1)

ISSUE_NUMBER=$(echo "$ISSUE_URL" | grep -oE '[0-9]+$')
echo "Created issue #$ISSUE_NUMBER"

Adding to Project Board (MANDATORY)

This step is NOT optional. It is a gate.

Uses cached IDs from github-api-cache. API calls: 1 (add) + 1 (refresh cache).

# Add to project - REQUIRED (1 API call)
gh project item-add "$GITHUB_PROJECT_NUM" --owner "$GH_PROJECT_OWNER" --url "$ISSUE_URL"

if [ $? -ne 0 ]; then
  echo "ERROR: Failed to add issue to project. Cannot proceed."
  echo "Issue #$ISSUE_NUMBER exists but is NOT tracked in project board."
  exit 1
fi

# Refresh cache after adding (1 API call)
export GH_CACHE_ITEMS=$(gh project item-list "$GITHUB_PROJECT_NUM" --owner "$GH_PROJECT_OWNER" --format json)

# Get the item ID from refreshed cache (0 API calls)
ITEM_ID=$(echo "$GH_CACHE_ITEMS" | jq -r ".items[] | select(.content.number == $ISSUE_NUMBER) | .id")

if [ -z "$ITEM_ID" ] || [ "$ITEM_ID" = "null" ]; then
  echo "ERROR: Issue added but item ID not found. Cannot set fields."
  exit 1
fi

echo "Issue #$ISSUE_NUMBER added to project with item ID: $ITEM_ID"

Setting Project Fields (MANDATORY)

All fields must be set before proceeding.

Uses cached IDs - 0 API calls for lookups, 3 API calls for field updates.

# Use cached IDs (0 API calls) - set by session-start via github-api-cache
# GH_PROJECT_ID, GH_STATUS_FIELD_ID, GH_STATUS_READY_ID already available

# Get Type and Priority field IDs from cache (0 API calls)
TYPE_FIELD_ID=$(echo "$GH_CACHE_FIELDS" | jq -r '.fields[] | select(.name == "Type") | .id')
PRIORITY_FIELD_ID=$(echo "$GH_CACHE_FIELDS" | jq -r '.fields[] | select(.name == "Priority") | .id')

# Get option IDs from cache (0 API calls)
TYPE_OPTION_ID=$(echo "$GH_CACHE_FIELDS" | jq -r ".fields[] | select(.name == \"Type\") | .options[] | select(.name == \"[TYPE]\") | .id")
PRIORITY_OPTION_ID=$(echo "$GH_CACHE_FIELDS" | jq -r ".fields[] | select(.name == \"Priority\") | .options[] | select(.name == \"[PRIORITY]\") | .id")

# Set Status = Ready (1 API call)
gh project item-edit --project-id "$GH_PROJECT_ID" --id "$ITEM_ID" \
  --field-id "$GH_STATUS_FIELD_ID" --single-select-option-id "$GH_STATUS_READY_ID"

# Set Type (1 API call)
gh project item-edit --project-id "$GH_PROJECT_ID" --id "$ITEM_ID" \
  --field-id "$TYPE_FIELD_ID" --single-select-option-id "$TYPE_OPTION_ID"

# Set Priority (1 API call)
gh project item-edit --project-id "$GH_PROJECT_ID" --id "$ITEM_ID" \
  --field-id "$PRIORITY_FIELD_ID" --single-select-option-id "$PRIORITY_OPTION_ID"

Verify Project Board Setup (GATE)

Do not proceed until verification passes.

Refresh cache and verify (1 API call).

# Refresh cache and verify (1 API call)
export GH_CACHE_ITEMS=$(gh project item-list "$GITHUB_PROJECT_NUM" --owner "$GH_PROJECT_OWNER" --format json)
VERIFY=$(echo "$GH_CACHE_ITEMS" | jq ".items[] | select(.content.number == $ISSUE_NUMBER)")

STATUS=$(echo "$VERIFY" | jq -r '.status.name')
TYPE=$(echo "$VERIFY" | jq -r '.type.name // "unset"')

if [ -z "$STATUS" ] || [ "$STATUS" = "null" ]; then
  echo "GATE FAILED: Status not set for issue #$ISSUE_NUMBER"
  exit 1
fi

echo "VERIFIED: Issue #$ISSUE_NUMBER is in project with Status=$STATUS"

Issue Quality Check

Before proceeding, verify the issue has:

Required	Check
Clear title	Describes what will be delivered
Description	Explains the work
Acceptance criteria	At least one verifiable criterion
In GitHub Project	Added with correct status

If any are missing, update the issue before proceeding.

"Too Small for an Issue" is False

Common objections and responses:

Objection	Response
"It's just a typo fix"	Issues take 30 seconds. They provide a record. Create one.
"It's a one-liner"	One-liners can introduce bugs. Document them.
"I'll do it quickly"	Quick work is forgotten work. Track it.
"It's obvious what needs doing"	If it's obvious, the issue will be fast to write.

No exceptions. Every change has an issue.

Minimum Viable Issue

For truly trivial work, this is the minimum:

Title: Fix typo in README.md

## Description
Fix typo: "teh" → "the"

## Acceptance Criteria
- [ ] Typo is corrected

That's 30 seconds. There's no excuse.

After Gate Passes

Once issue is confirmed:

1. Note the issue number for all subsequent work
2. Proceed to next step in issue-driven-development
3. Reference issue in all commits and PR

Checklist

Before proceeding past this gate:

• Issue number identified
• Issue exists in GitHub
• Issue is accessible (correct repo, not archived)
• Issue has description
• Issue has at least one acceptance criterion
• Issue is in GitHub Project (VERIFIED with ITEM_ID)
• Status field is set (Ready or Backlog)
• Type field is set
• Priority field is set

Gate: Cannot proceed to issue-driven-development Step 2 without all checkboxes verified.

Skill: project-board-enforcement