Borrowing it
Nothing to install: this file belongs to SidneyBissoli/bcb-br-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/SidneyBissoli/bcb-br-mcp/main/CLAUDE.mdgit clone --depth 1 https://github.com/SidneyBissoli/bcb-br-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/instructions/sidneybissoli/bcb-br-mcp/claude-md)<a href="https://agentmods.dev/instructions/sidneybissoli/bcb-br-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/sidneybissoli/bcb-br-mcp/claude-md/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/instructions/sidneybissoli/bcb-br-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/sidneybissoli/bcb-br-mcp/claude-md.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 | $0.09830 | $0.09830 |
| Opus 5.5 | $0.03932 | $0.03932 |
| Sonnet 5.5 | $0.01966 | $0.01966 |
| Haiku 4.5 | $0.00983 | $0.00983 |
Grade A, and why
bcb-br-mcp CLAUDE.md 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 14d 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.
How it starts
The opening of the file, as written. The whole thing — 500 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
What this is
An MCP server, published to npm as bcb-br-mcp, exposing three public APIs of
the Brazilian Central Bank as 17 tools over STDIO and Streamable HTTP: the SGS
time series (Selic, IPCA, FX, GDP and 135 verified indicators), the Focus
market-expectations survey (Olinda OData) and PTAX exchange rates. Pure
TypeScript, ESM, four runtime dependencies: @modelcontextprotocol/server (MCP SDK
v2), @sbissoli/mcp-stats (motor de estatística do portfólio),
@sbissoli/mcp-search (contrato Deep Research: search/fetch, desde a 1.11.0)
e @sbissoli/mcp-provenance (contrato de proveniência). Este último traz zod de
volta, como dependência transitiva — custo aceito de propósito no D4: a regra
do portfólio é não reimplementar componente da Fase 0 localmente, e uma
proveniência local faria o campo motor do bloco derivacao mentir, que é o
mesmo argumento que decidiu a correlação na sessão 06. O zod é interno; a
superfície publicada continua sendo JSON Schema escrito à mão. No database;
the only state is module-level — the curated series catalog and the 24-hour cache
of the Open Data Portal index (metadata only).
Two consumer channels, both in production and both protected:
- npm (
bcb-br-mcp, ~500 downloads/month, 1.36k uses on Smithery) — stdio. - Hosted —
https://bcb.sidneybissoli.com/mcp(custom domain) and the historicalhttps://bcb.sidneybissoli.workers.dev.
Commands
npm run build # limpa dist/ e compila com tsconfig.build.json (sem testes nem evals)
npm start # node dist/index.js (servidor MCP em stdio)
npm test # vitest run
npm run typecheck # tsc --noEmit (inclui os testes — o build os exclui)
npm run smoke # smoke contra o worker hospedado
node scripts/smoke-mcp.mjs --stdio # o mesmo smoke sobre dist/index.js local
node scripts/smoke-mcp.mjs --sonda # só pergunta às APIs do BCB se estão servindo (sai 0/2) — para ler um deploy vermelho
node scripts/dump-surface.mjs --stdio # dump normalizado da superfície (ver baselines/)
npx tsx src/evals/run.ts # eval de seleção com MODELO REAL — CUSTA DINHEIRO
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.
- 14d ago Changed · +9 lines · +206 tokens per session e99ccd024580
- 19d ago Changed · +29 lines · +677 tokens per session 0129694ac74f
- 27d ago Changed · -1 tokens per session 4d865dfc1d4c
- 1mo ago Changed · +12 lines · +250 tokens per session 5b652143c2a7
- 1mo ago Changed · +5 lines · +121 tokens per session 775604d69978
- 1mo ago Changed 11175214173b
- 1mo ago Changed · +1 lines · +26 tokens per session bb5e18b02559
- 1mo ago Changed · +33 lines · +544 tokens per session 87e6fbf50ac5
- 1mo ago Changed · +11 lines · +313 tokens per session 2eb4be07d1a3
- 1mo ago First seen · 400 lines · 7,694 tokens per session scan A 0fd7a8340920
bcb-br-mcp CLAUDE.md is an instructions file published in the GitHub repository SidneyBissoli/bcb-br-mcp (11 stars, last pushed 2d ago), licensed MIT. It adds 9,830 tokens to every session, about $0.0393 per session on Opus 5.5. 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.
bcb-br-mcp CLAUDE.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| bcb-br-mcp CLAUDE.mdSidneyBissoli/bcb-br-mcp | Instructions file | 11 | 2d ago | MIT | A | 9,830 | Claude Code |
| vibetags com-example-config-AsyncTestConfig.instructions.mdPIsberg/vibetags | Instructions file | 25 | yesterday | MIT | A | 82 | GitHub Copilot |
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| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 5,685 | GitHub Copilot |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | today | MIT | A | 4,680 | Codex, OpenCode |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 3,086 | GitHub Copilot |