Cost Budget Check

What it does

When your agent uses it

• Tasks that involve LLM cost and token optimization

Example prompts

• “/cost-budget-check”

Requirements

• Pre-approved tools (allowed-tools): Bash, mcp__plugin_ruflo-core_ruflo__memory_retrieve, mcp__plugin_ruflo-core_ruflo__memory_list, mcp__plugin_ruflo-core_ruflo__memory_store

Workflow steps

4 steps, taken from the first numbered list in SKILL.md.

1. 1Run the check
2. 2Inspect the markdown summary — budget, spent, remaining, utilization percentage, alert level (🟢 OK · 🟡 INFO · 🟠 WARNING · 🔴 CRITICAL ·…
3. 3Set / inspect the budget
4. 4HARD_STOP path — budget.mjs check exits with code 1 when utilization ≥ 100%. Wrap critical agent spawns in a budget.mjs check && spawn ……

What it can do on your machine

Read from SKILL.md and the folder at commit 6c04654. It shows what the files ask for, not the result of running them.

• Tool permissions

  Pre-approves these tools, so the agent can use them without asking each time:

  • Bash
  • mcp__plugin_ruflo-core_ruflo__memory_retrieve
  • mcp__plugin_ruflo-core_ruflo__memory_list
  • mcp__plugin_ruflo-core_ruflo__memory_store

  From allowed-tools in the SKILL.md frontmatter.

• Runs code

  Shell commands in SKILL.md call:

  • node

  From the folder's file list and the shell code blocks in SKILL.md.

• Network

  No URLs in SKILL.md.

  From URLs in SKILL.md, links to its own repository left out.

• Credentials

  Names no API keys, tokens, secrets or passwords.

  From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Cost Budget Check loads about 645 tokens when it runs. Until then it costs about 31 tokens; SKILL.md has 219 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~31

When it runs · the whole SKILL.md, loaded when a task matches

~645

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

• NotePre-approves every shell command (allowed-tools: Bash)SKILL.md

  allowed-tools: Bash, mcp__plugin_ruflo-core_ruflo__memory_retrieve, mcp__plugin_ruflo-core_ruflo__memory_list, mcp_

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from ruvnet/ruflo at commit 6c04654, republished under its MIT licence (© ruvnet). 219 words, ~645 tokens.

name

cost-budget-check

description

Read accumulated cost-tracking spend + budget config, compute utilization, emit 50/75/90/100% alert ladder

allowed-tools

Bash, mcp__plugin_ruflo-core_ruflo__memory_retrieve, mcp__plugin_ruflo-core_ruflo__memory_list, mcp__plugin_ruflo-core_ruflo__memory_store

argument-hint

[--period today|week|month|all]

{
  "budget_usd": 50.00,
  "setAt": "2026-05-05T...",
  "thresholds": { "info": 0.50, "warning": 0.75, "critical": 0.90, "hard_stop": 1.00 }
}

© ruvnet, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in plugins/ruflo-cost-tracker/skills/cost-budget-check of ruvnet/ruflo.

Open the folder on GitHubat commit 6c04654