brasil-mcp-leads 0.2.0

MCP server pra geração de leads B2B brasileiros com WhatsApp e summary IA.

brasil-mcp-leads

B2B lead generation for Brazil, with credit-priced enrichment. RFB-grade base data, opt-in WhatsApp/email scraping, and AI-generated lead summaries — exposed as MCP tools and a REST API.

brasil-mcp-leads is Phase 3 of the Brasil MCP family. It sits on top of brasil-mcp-match (which owns the Receita Federal ingest) and adds three things match deliberately doesn't do:

1. Reveal RFB data for outbound work — razão social, endereço, CNAE — once the caller is willing to pay for it and the company has not opted out.
2. Enrich with on-the-spot site scraping for WhatsApp links, emails, phones, and AI-chat-channel detection.
3. Summarise the lead with a structured JSON brief (industry, target, pitch angles) generated either through MCP Sampling (the caller's LLM) or via our Anthropic fallback.

Pricing is per-credit (1 cred = 1 lead with cheap delivery, 2 cred = lead + our-LLM summary). Plans range from a free 50-lead lifetime quota to a 1000 leads/mo Pro plan. Overage is capped at 2× the monthly fee and billed via Asaas.

---

Install

pip install brasil-mcp-leads
# or
uv add brasil-mcp-leads

This package depends on brasil-mcp-match>=0.2.0 and Postgres 16+ shared with that ingest. If the Match base is not loaded, every lookup_lead returns CNPJ_NOT_COVERED.

License note. brasil-mcp-leads is AGPL-3.0-or-later. Calling the hosted API requires no license. Self-hosting a derived service in production without releasing source requires a separate commercial license (planned for v0.2+).

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Quick start

1. Start the dependencies

brasil-mcp-leads shares the Postgres database with brasil-mcp-match. Run the Match ingest first (see its README) then apply the leads schema:

git clone https://github.com/brasil-mcp/leads.git
cd leads
docker compose up -d postgres
uv run psql "$BRASIL_MCP_LEADS_DATABASE_URL" \
    -f src/brasil_mcp_leads/db/migrations/001_initial.sql

2. Start the API

# REST (FastAPI + slowapi rate limiter)
uv run brasil-mcp-leads serve 8000

# Or run the MCP SSE server (FastMCP)
uv run brasil-mcp-leads-server

3. Make a call

curl -X POST http://localhost:8000/v1/leads/lookup \
  -H "Authorization: Bearer brasilmcp_leads_yourkey" \
  -H "Content-Type: application/json" \
  -d '{
    "cnpj": "33000167000101",
    "deliver": {
      "base": true,
      "scrape": true,
      "summary_max_tier": 2,
      "summary_available_tier": 2
    }
  }'

Sample MCP tool invocation (JSON payload sent by the client):

{
  "name": "lookup_lead",
  "arguments": {
    "cnpj": "33000167000101",
    "deliver": { "base": true, "scrape": true, "summary_max_tier": 1 }
  }
}

The response is a LeadResponse with charged_credits, delivered_skus, summary_source, and the resolved data.

---

v0.1.0 tools

Tool	Description	Credits
lookup_lead	One CNPJ → base + optional scrape + optional summary.	1 or 2 (see pricing).
bulk_lookup_leads	Up to 1000 CNPJs in parallel; partial failures contained per-item.	N × per-lead.
sample_leads	Filter-based discovery (CNAE / UF / porte / etc.) excluding already-sold.	N × per-lead.
refresh_lead	Force re-scrape + summary regeneration; charged at standard rate.	1 or 2.
extract_from_site	Debug: contact extraction from a URL without DB write or charge.	0 (10/min cap).
health	Server version + DB ping.	0.

Full input/output schemas, error codes, and per-tool cURL examples are in docs/tools.md.

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Pricing

Plan	Monthly credits	Monthly BRL	Overage / credit	Overage cap	Max summary tier
free	50 (lifetime)	R$ 0.00	—	—	1
hobby	100	R$ 50.00	R$ 0.50	R$ 100.00	1
starter	500	R$ 125.00	R$ 0.30	R$ 250.00	2
pro	1000	R$ 187.50	R$ 0.20	R$ 375.00	3

• Unused credits expire at cycle end (standard SaaS).
• When overage_brl_accumulated >= overage_cap_brl, the caller's tokenised card is charged immediately via Asaas and the accumulator resets.
• A failed Asaas charge moves the subscription to blocked and every subsequent call returns HTTP 402.

Summary tiers map to Anthropic models when the caller doesn't supply sampling: 1 → Haiku, 2 → Sonnet, 3 → Opus.

---

Environment variables

Variable	Purpose
BRASIL_MCP_LEADS_DATABASE_URL	asyncpg DSN for the Match+Leads Postgres.
LEADS_ANTHROPIC_API_KEY	Anthropic key for the fallback summary path.
LEADS_API_KEYS	key1:client_id1,key2:client_id2 mapping for REST auth.
LEADS_CORS_ORIGINS	Comma-separated CORS allowlist (REST only).
ASAAS_API_KEY	Asaas API key for subscription + payments.
ASAAS_ENV	production or sandbox (default: sandbox).
ASAAS_WEBHOOK_SECRET	Shared HMAC secret for verifying webhook deliveries.

---

MCP client setup (Claude Desktop)

{
  "mcpServers": {
    "brasil-mcp-leads": {
      "url": "https://leads.brasil-mcp.com/sse",
      "transport": "sse",
      "headers": {
        "Authorization": "Bearer brasilmcp_leads_yourkey"
      }
    }
  }
}

For local stdio runs (development), use the REST API with the same key.

---

Privacy & LGPD

The Match repo carries the legal stance for the family (LIA + DPA templates in brasil-mcp-match/docs/lgpd/). leads adds three guarantees on top:

1. Opt-out propagation. Any CNPJ that has invoked Art. 18 LGPD via Match is automatically blocked here too (the opt_out_request table is shared).
2. No sócio PII. Responses are strictly the LeadResponse schema — no CPF, no nome de sócio, no PF endereço. Asserted across the security test suite.
3. Audit log is hash-only. Every call writes a row in the shared audit_log with sha256(input), never the input itself.

Cold outreach in volume, cross-referencing with third-party PF bases without consent, and bulk resale are explicitly forbidden by the Terms of Service.

---

Architecture

src/brasil_mcp_leads/
  core/
    pricing.py            # plan tables + compute_charge
    usage_tracker.py      # charge_credits + threshold cap
    scraper.py            # httpx + trafilatura + BeautifulSoup
    extractors/           # whatsapp / emails / phones / ai_channels
    sampling.py           # MCP sampling path
    fallback_llm.py       # Anthropic fallback (Haiku/Sonnet/Opus)
    pipeline.py           # execute_lookup orchestration
    billing/              # Asaas client + webhooks + cron_overage
    repository/           # asyncpg repos (leads, summary, usage, search, sold_attrs)
  adapters/
    mcp/                  # FastMCP server + tool registration
    rest/                 # FastAPI app + dependencies + routes (lookup, billing, health)

Same pattern as brasil-mcp-essentials and brasil-mcp-match: pure-Python core, thin adapters. asyncpg pool, FastAPI + FastMCP SSE.

---

Roadmap

• v0.1.0 (now) — 6 MCP tools, REST API, credit-based billing on Asaas, AGPLv3, 378 tests across unit/adapter/security suites, 99% coverage.
• v0.2.0 — Dashboard (saldo + history), webhooks de update, saved searches, commercial license terms.
• v0.3.0 — Hunter/Apollo email enrichment, SMTP validation, lookalike search.

Spec §14 enumerates the explicit out-of-scope items for v0.1.0.

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Family

• Fase 1 — brasil-mcp-essentials. Offline validators (CNPJ, CPF, telefone, etc.). MIT.
• Fase 2 — brasil-mcp-match. Privacy-preserving CNPJ verification (match, don't reveal). AGPLv3.
• Fase 3 — this repo. B2B lead generation. AGPLv3 + planned commercial license.

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License

AGPL-3.0-or-later. Commercial self-host without source-release obligations requires a separate commercial license (planned for v0.2+).

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Contributing

Issues and PRs welcome. Before opening a PR, run:

uv run ruff check
uv run pyright src
uv run pytest --cov=brasil_mcp_leads --cov-branch --cov-fail-under=95 -q

CI runs the same gates across Python 3.11, 3.12, and 3.13.