mastg-assign-ids

Development

Assign real MASTG IDs to draft files that use fake placeholder IDs (e.g. MASTG-KNOW-0x01, MASTG-BEST-0x56). Use when finishing a PR that introduces new MASTG components with placeholder IDs, or when asked to "fix fake IDs", "assign real IDs", or "use next available IDs". Runs next_id.py to get the correct next IDs, renames all affected files, and replaces all in-content references.

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Source SKILL.md: https://github.com/OWASP/mastg/blob/HEAD/.github/skills/mastg-assign-ids/SKILL.md

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MASTG Assign IDs

Replace all fake/placeholder component IDs (e.g. MASTG-KNOW-0x01, MASTG-BEST-0x56) with the next real sequential IDs across file names and file contents.

When to use

A PR adds new MASTG components using 0x## placeholder IDs
You are asked to "fix fake IDs", "assign real IDs", or "use next available IDs"

Fake-ID convention

New draft items use the pattern MASTG-TYPE-0x## (hex suffix, e.g. 0x01, 0x0a). Real IDs use zero-padded 4-digit decimal: MASTG-TYPE-NNNN (e.g. MASTG-KNOW-0122).

Non-standard fake IDs: Some draft items may use a different convention that is NOT caught by the 0x## pattern — for example MASTG-BEST-00ea (lowercase hex digits without the 0x prefix). These are still fake IDs and must be replaced. After running find_fakes.sh, manually scan the git diff --name-only origin/master...HEAD output for any ID-like suffix that contains lowercase letters (a–f) or is not exactly 4 decimal digits.

Step-by-step workflow

All scripts are in scripts/ relative to this skill. Run from the repository root.

1. Find all fake-ID files in the current branch

bash .github/skills/mastg-assign-ids/scripts/find_fakes.sh

See scripts/find_fakes.sh.

2. Get the next available real IDs

python3 .github/skills/mastg-assign-ids/scripts/next_id.py

Prints one line per component type, e.g.:

MASTG-APP-0034
MASTG-BEST-0046
MASTG-DEMO-0542
MASTG-KNOW-0132
MASTG-TECH-0156
MASTG-TEST-0351
MASTG-TOOL-0151

If multiple new components of the same type are introduced in the same PR, allocate IDs sequentially: first new file → next_id, second → next_id+1, etc.

See scripts/next_id.py.

3. Build the replacement mapping

Map each fake ID to the real ID you just allocated. Record the mapping explicitly before proceeding, e.g.:

MASTG-KNOW-0x01 → MASTG-KNOW-0122
MASTG-KNOW-0x02 → MASTG-KNOW-0123
MASTG-BEST-0x56 → MASTG-BEST-0045

Important ordering rules: pass longer/more-specific patterns first (e.g. 0x0a before 0x01, 0xXX before anything else).

4. Rename files

Use git mv to preserve history:

git mv old-path/MASTG-TYPE-0x01.md new-path/MASTG-TYPE-NNNN.md

For demos (directory-based IDs):

git mv demos/ios/MASVS-CAT/MASTG-DEMO-0x01 demos/ios/MASVS-CAT/MASTG-DEMO-NNNN

5. Replace in-content references

Pass OLD=NEW pairs as arguments — longer patterns first:

python3 .github/skills/mastg-assign-ids/scripts/fix_ids.py \
    MASTG-KNOW-0x0a=MASTG-KNOW-0131 \
    MASTG-KNOW-0x01=MASTG-KNOW-0122 \
    MASTG-BEST-0x56=MASTG-BEST-0045

This covers frontmatter id: fields and knowledge: lists automatically (they live in .md files). See scripts/fix_ids.py.

6. Verify

bash .github/skills/mastg-assign-ids/scripts/verify.sh
python3 .github/skills/mastg-assign-ids/scripts/next_id.py

verify.sh exits 1 if any fake IDs remain. next_id.py should now report incremented next IDs. See scripts/verify.sh.

7. Give the user a summary of the changes

Provide a summary of the ID changes, e.g.:

ID assignments used in this PR:

| Fake ID | Real ID |
|---------|---------|
| MASTG-KNOW-0x01 | MASTG-KNOW-0122 |
| MASTG-KNOW-0x02 | MASTG-KNOW-0123 |
| MASTG-BEST-0x56 | MASTG-BEST-0045 |

Component locations

Type	Files/dirs
MASTG-APP	`apps/*.md`
MASTG-BEST	`best-practices/*.md`
MASTG-DEMO	`demos/<platform>/<MASVS-CAT>/MASTG-DEMO-NNNN/` (directory)
MASTG-KNOW	`knowledge/<platform>/<MASVS-CAT>/MASTG-KNOW-NNNN.md`
MASTG-TECH	`techniques/<platform>/MASTG-TECH-NNNN.md`
MASTG-TEST	`tests-beta/<platform>/<MASVS-CAT>/MASTG-TEST-NNNN.md`
MASTG-TOOL	`tools/<type>/MASTG-TOOL-NNNN.md`

Important notes

Always use git mv, never mv, so renames are tracked in history.
Always scope work to files changed in the current branch. Never touch the whole repo.
Exclude .github/ from all searches and replacements (all scripts do this automatically).
The id: field in frontmatter must match the filename.