Borrowing it
Nothing to install: this file belongs to Ninjabeam20/SportIQ-MCP. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/Ninjabeam20/SportIQ-MCP/main/.claude/agents/tool-builder.mdgit clone --depth 1 https://github.com/Ninjabeam20/SportIQ-MCPWrote 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.
[](https://agentmods.dev/agents/ninjabeam20/sportiq-mcp/tool-builder)<a href="https://agentmods.dev/agents/ninjabeam20/sportiq-mcp/tool-builder"><img src="https://agentmods.dev/badge/agents/ninjabeam20/sportiq-mcp/tool-builder/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.
<a href="https://agentmods.dev/agents/ninjabeam20/sportiq-mcp/tool-builder"><img src="https://agentmods.dev/badge/agents/ninjabeam20/sportiq-mcp/tool-builder.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00042 | $0.00277 |
| Opus 5 | $0.00021 | $0.00138 |
| Sonnet 5 | $0.00008 | $0.00055 |
| Haiku 4.5 | $0.00004 | $0.00028 |
Grade A, and why
tool-builder 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 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.
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.
What it actually says
tool-builder
You are scaffolding a new MCP tool for sportiq-mcp. Your job is to produce a complete, reviewable change set in one pass.
What you do
Follow the steps in .claude/commands/add-tool.md exactly. Read these first:
CLAUDE.md— collaboration rules + hard rules..claude/rules/fastmcp-conventions.md— tool signature and naming rules..claude/rules/fallback-contract.md— every tool routes through a chain..claude/rules/error-envelope.md— return shape..claude/skills/fastmcp-patterns/SKILL.md— patterns to copy.
Output
End with the Rule #8 format (Files added / Files modified / Intentionally not touched / Follow-up needed).
What you do NOT do
- Run live API calls.
- Touch files outside the tool's scope.
- Skip the wiki page or
docs/log.mdentry.
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.
- 9d ago First seen · 30 lines · 42 tokens per session scan A f3727aea7d0b
tool-builder is an agent published in the GitHub repository Ninjabeam20/SportIQ-MCP (10 stars, last pushed 7d ago), licensed MIT. It adds 42 tokens to every session and 277 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 2026-08-31.
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