kb-migrate

kb-migrate is a command for Claude Code from mathiasbourgoin/roster. It costs 32 tokens per session (1,297 once invoked), scanned A, original, MIT.

A migration routine for an existing project knowledge base, meaning its structured collection of project documentation and notes. It audits, cleans, reorganises, updates file metadata, and verifies the result with human approval between phases.

In plain words
What is it for?
It is for auditing and reorganising a knowledge base, fixing its structure and metadata, checking links and code compliance, and verifying a schema migration.
Why use it?
It helps move an older knowledge base to a newer format while finding vague wording, broken links, and disagreements with the code. Re-running it does not make additional changes to an already migrated base.

Command for Claude Code

Written for Claude Code: when-to-use in frontmatter.

Part of the roster plugin — 38 commands, 8 agents shipped together

Good fit It is for auditing and reorganising a knowledge base, fixing its structure and metadata, checking links and code compliance, and verifying a schema migration.

Compare 6 commands from other repositories ↓
Install with agentmods
npx agentmods add commands/mathiasbourgoin/roster/kb-migrate
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/mathiasbourgoin/roster

Made for: Claude Code.

Or install roster, the plugin that ships this one along with the rest of its 38 commands, 8 agents.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for kb-migrate

README.md
[![agentmods](https://agentmods.dev/badge/commands/mathiasbourgoin/roster/kb-migrate/github.svg)](https://agentmods.dev/commands/mathiasbourgoin/roster/kb-migrate)
Your own site
<a href="https://agentmods.dev/commands/mathiasbourgoin/roster/kb-migrate"><img src="https://agentmods.dev/badge/commands/mathiasbourgoin/roster/kb-migrate/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for kb-migrate

Your own site · 80×15
<a href="https://agentmods.dev/commands/mathiasbourgoin/roster/kb-migrate"><img src="https://agentmods.dev/badge/commands/mathiasbourgoin/roster/kb-migrate.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 32 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,297 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00032 $0.01297
Opus 5 $0.00016 $0.00648
Sonnet 5 $0.00006 $0.00259
Haiku 4.5 $0.00003 $0.00130

Measured 2d ago against content hash 43ca30eaf42a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

kb-migrate scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.claude/commands/kb-migrate.md · 149 lines

How it starts

The opening of the file, as written. The whole thing — 149 lines — stays where its author put it; the contents beside it link to each section on GitHub.

KB Migrate

You perform a structured, human-gated migration of an existing project KB to the current roster schema. Five sequential phases: audit, cleanup, reorg, frontmatter migration, verify.

Idempotency guarantee: running this skill twice on the same KB produces no additional changes. Files with schema-version: 2 in frontmatter are skipped in Phase D.

Pre-conditions

[ -d kb ] && echo "KB present" || echo "KB absent — nothing to migrate"

If no kb/ directory: report "No KB found. Run /roster-init to bootstrap one." and stop.

Steps

Phase A — Audit

Run all available auditors on the existing KB:

  1. Run ambiguity-auditor on all KB files. Collect: undefined terms, vague quantifiers, contradictions.
  2. Run spec-compliance-auditor if codebase is present. Collect: spec vs code divergences.
  3. Run check-kb-links: node scripts/check-kb-links.js (or npm run check:kb-links). Collect: broken relative links.

Produce a Findings Summary:

## Audit Findings

### Broken links (N)
- <file>: [link] → <target> (not found)

### Ambiguity issues (N)
- <file>: <issue>

### Spec compliance issues (N)
- <file>: <issue>

### Migration candidates (files without schema-version: 2)
- <file>: status=<old-value>

Present findings to the human. Gate: proceed to Phase B only after human acknowledges.


Phase B — Cleanup

For each finding from Phase A:

  • Broken link: propose the correct target (search for similar filenames) or mark as "file missing — create or remove link". Human approves per item. Apply approved fixes.
  • Ambiguity issue: propose precise language replacement. Human approves. Apply.
  • Spec compliance: present the divergence, ask: "Fix code or amend spec?" Do not resolve unilaterally.

After all items are resolved or explicitly deferred:

## Cleanup Summary
Applied: N fixes
Deferred: M items (listed)

Gate: human confirms cleanup is complete.


Phase C — Reorg

Compare current KB structure against the schema tier (minimal/standard/large) appropriate for the project size:

Read the full file on GitHub · 149 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 149 lines · 32 tokens per session scan A 43ca30eaf42a

Subscribe to this mod's changes

kb-migrate is a command published in the GitHub repository mathiasbourgoin/roster (2 stars, last pushed 3d ago), licensed MIT. It adds 32 tokens to every session and 1,297 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-07.