_migrate-workers

_migrate-workers is a skill for Claude Code from flavien-ia/hypervibe-harness. It costs 153 tokens per session (2,019 once invoked), scanned A, original, Apache-2.0.

An internal one-time migration helper that combines several older Cloudflare background workers into one shared worker for Hypervibe installations.

In plain words
What is it for?
It is used during startup when an older Hypervibe version is detected, migrating the old background setup to the shared worker.
Why use it?
It updates older installations so their database backups, usage checks, and scheduled tasks no longer depend on separate workers and cron schedules.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: mentions Claude Code; mentions Codex.

Part of the hypervibe plugin — 86 skills, 1 hook, 1 MCP server shipped together

Good fit It is used during startup when an older Hypervibe version is detected, migrating the old background setup to the shared worker.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/flavien-ia/hypervibe-harness/_migrate-workers
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.

Any agent
npx skills add flavien-ia/hypervibe-harness --skill _migrate-workers
Clone the repo
git clone --depth 1 https://github.com/flavien-ia/hypervibe-harness

Made for: Claude Code.

Or install hypervibe, the plugin that ships this one along with the rest of its 86 skills, 1 hook, 1 MCP server.

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 _migrate-workers

README.md
[![agentmods](https://agentmods.dev/badge/skills/flavien-ia/hypervibe-harness/_migrate-workers/github.svg)](https://agentmods.dev/skills/flavien-ia/hypervibe-harness/_migrate-workers)
Your own site
<a href="https://agentmods.dev/skills/flavien-ia/hypervibe-harness/_migrate-workers"><img src="https://agentmods.dev/badge/skills/flavien-ia/hypervibe-harness/_migrate-workers/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 _migrate-workers

Your own site · 80×15
<a href="https://agentmods.dev/skills/flavien-ia/hypervibe-harness/_migrate-workers"><img src="https://agentmods.dev/badge/skills/flavien-ia/hypervibe-harness/_migrate-workers.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 153 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,019 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 4 findings, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Excessive Agency · line 17
    Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.
    Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
  • medium MCP Rug Pull · line 70
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 84
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium Data Exfiltration · line 78
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
How audits are shown
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 $0.00153 $0.02019
Opus 5 $0.00077 $0.01009
Sonnet 5 $0.00031 $0.00404
Haiku 4.5 $0.00015 $0.00202

Measured 9d ago against content hash 4b5cff97853e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

_migrate-workers scanned grade A with 1 finding 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 9d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -s -H "Authorization: Bearer $ADMIN" "<workerUrl>/status"
skills/_migrate-workers/SKILL.md · 107 lines

How it starts

The opening of the file, as written. The whole thing — 107 lines — stays where its author put it; the contents beside it link to each section on GitHub.

_migrate-workers - Consolidate the old background mechanisms into the shared clock (internal)

Invoked by /start when it detects legacy background workers on the machine. Users never call this directly: the user-facing instruction is simply "re-run /start".

Communication

  • Detect the user's language from the conversation (the user's own messages, anywhere in the session - not just this invocation: a bare slash command like /bootstrap carries no language signal by itself). If nothing in the conversation gives a signal, fall back to the OS locale (node -e "console.log(Intl.DateTimeFormat().resolvedOptions().locale)") before defaulting to English. ALWAYS reply in that language for every user-facing message: questions, progress, confirmations, summaries, errors - including any example text quoted in this skill, which is illustrative and must be translated, never sent verbatim.
  • Use plain, non-technical business language. Never expose internal script names (*.mjs) or jargon; describe actions in human terms.
  • Show progress as a short natural-language checklist (in-progress and done states).
  • NEVER ask the user to type shell commands. You run everything; they only answer questions.

What this does (say it simply if asked)

Older Hypervibe versions could set up to three separate background mechanisms on the user's Cloudflare account: database backups, quota alerts, and scheduled task triggers. Version 2.5 unifies all three into ONE mechanism ("your shared clock", technically hypervibe-jobs), living in a small git-versioned folder, using a single Cloudflare cron slot in total. Same schedules, same behavior, safer bookkeeping, and it frees up to 2-3 slots.

Safety rails (absolute)

  1. NOTHING legacy is modified or deleted until the new mechanism is deployed AND verified with a real run.
  2. Decommission (Step 6) happens ONLY after explicit user consent, never silently.
  3. Every script here is idempotent: on any failure, fix the cause and re-run. The legacy mechanisms keep working the whole time.

Read the full file on GitHub · 107 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. 9d ago First seen · 107 lines · 153 tokens per session scan A 4b5cff97853e

Subscribe to this mod's changes

_migrate-workers is a skill published in the GitHub repository flavien-ia/hypervibe-harness (37 stars, last pushed yesterday), licensed Apache-2.0. It adds 153 tokens to every session and 2,019 once invoked, about $0.0008 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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