# CPFHub.io Review REST API and remote MCP server for looking up Brazilian CPFs, with real-time Receita Federal verification built in. ## Editor's Score: 63/100 Capability scores 17 because the tool does its narrow job well (real-time Receita Federal lookup, MCP server, bulk jobs up to 10,000 CPFs) but is genuinely limited to a single document type in a single country, which no named competitor in the directory shares as a constraint. Ease of use scores 20 because the public OpenAPI spec, ready-made integration examples, no-card free tier, and native MCP support make onboarding unusually low-friction for a developer API. Value scores 16 because the free tier is real and useful, but the PRO plan at R$149/month for 1,000 credits is priced in BRL with no published USD equivalent, creating budgeting friction for international buyers, and the gap between 50 free credits and the first paid tier is steep for teams with modest but real production volume. Delivery scores 10 because no independent user reviews were found on any major platform, the tool is very new with a small GitHub footprint, and all performance claims (150 ms, 1 s, SLA figures) come from the vendor's own materials with no third-party corroboration, which is a meaningful trust gap for a service used in fraud prevention and KYC decisions. ## Pros - Real-time Receita Federal connection confirms current CPF registration status and death year, not just cached data from a third-party database. - Remote MCP server endpoint lets AI agents in Claude and Cursor call CPF lookups as a native tool with no custom integration code. - Pay-per-result billing: lookups that return no result (invalid or non-existent CPFs) do not consume a credit, which meaningfully reduces costs in fraud-screening workloads. ## Cons - Scope is locked to Brazilian CPF only. There is no support for CNPJ (Brazilian company registration), RG, or any non-Brazilian identity document, so any team with multi-document or multi-country needs must bolt on a second service. - Pricing is in BRL with no published USD or EUR equivalent, which adds friction for international teams budgeting in other currencies and exposes them to exchange-rate variability. - The free plan's 50 credits per month is enough for integration testing but too thin for any production workload, and the jump to R$149/month PRO with 1,000 credits is the only self-serve paid option before a custom enterprise quote. ## Pricing Freemium. A free tier is available. - Grátis (Free): R$0/month - PRO: R$149/month - Corporativo (Enterprise): Custom quote Pricing reflects what we saw at the time of review (2026-10). Confirm current pricing on the official site. Category: AI Agents & Automation (https://aitoolseekers.com/category/ai-agents-automation) Official site: https://www.cpfhub.io/ Last verified by a human: 2026-10-11 Reviewed by a human at AI Tool Seekers, a hand-reviewed AI tools directory. Every listed tool is verified by a person before publishing. Scores are editorial opinions from a fixed rubric (capability, ease of use, value, delivery on promise) and cannot be bought; there is no pay-to-rank. Directory: https://aitoolseekers.com This review: https://aitoolseekers.com/tools/cpfhubio Methodology: https://aitoolseekers.com/how-verification-works ## Verdict CPFHub.io is the right call for any developer or AI agent pipeline that needs to verify Brazilian CPFs fast, with a free tier that requires no credit card and a direct line to Receita Federal for real-time status. Its scope is intentionally narrow: one country, one document type, and no plans to expand beyond that. Teams needing broader Latin American identity verification or multi-document KYC should look elsewhere. Best for: Brazilian fintech, e-commerce, and KYC pipelines needing CPF verification via API or AI agent Not for: Teams needing multi-country identity verification or document types beyond CPF ## Overview CPFHub.io does one thing: it lets software and AI agents look up Brazilian CPF numbers. There are two lookup modes. The simple lookup returns name, gender, and birth date in roughly 150 ms. The real-time lookup goes directly to Receita Federal, Brazil's federal tax authority, and returns registration status and death year in roughly 1 second. That direct Receita Federal connection is the product's clearest differentiator; most CPF lookup services cache data and cannot confirm current registration status. The MCP server angle is what separates CPFHub.io from a plain REST API. The remote MCP endpoint at api.cpfhub.io/mcp means AI agents running in Claude or Cursor can call CPF lookups as a native tool, without any custom integration code. A public OpenAPI spec is also available, so connecting to standard HTTP clients or code generators is straightforward. Bulk jobs support up to 10,000 CPFs in a single request, which covers batch onboarding and fraud screening at meaningful scale. The pricing model charges per result, not per attempt. A lookup that finds nothing does not consume a credit. That is a meaningful design choice for fraud-prevention workloads where a significant share of inputs will be invalid or fabricated CPFs. The free plan gives 50 credits per month with no card required, which is enough to test a full integration end-to-end before committing to the R$149/month PRO tier. ## Who should use it Developers building onboarding flows for Brazilian financial products, marketplaces, or lending platforms are the clearest fit. If your pipeline needs to confirm that a CPF is active at Receita Federal before approving a transaction, CPFHub.io gives you that check in about one second via a single API call or an AI agent tool invocation. The free tier's 50 monthly credits are enough to wire up a staging environment without a procurement conversation. Fraud and compliance teams running batch screening against large user databases will find the bulk job limit of 10,000 CPFs per job and the pay-per-result billing model practical: you are not charged for the invalid inputs that are most common in fraud datasets. Teams that need identity verification across multiple Latin American countries, or that need to verify documents beyond CPF (CNPJ, RG, passport), should look elsewhere. Cronloop, which is in our directory, can orchestrate scheduled batch verification workflows using AI agents and may be a better fit if the CPF check is one step inside a larger automated compliance pipeline rather than the whole job. ## FAQ Q: Does the free plan require a credit card? A: No. The free plan provides 50 credits per month with no card required, which is enough to test a full integration in a staging environment. Q: What happens if I exceed my monthly credit limit? A: On the PRO plan, lookups continue without interruption past the 1,000-credit limit. Overage credits are billed at R$0.15 each at the start of the following billing cycle. Q: Am I charged for CPF lookups that return no result? A: No. Lookups for CPFs that are not found or are invalid do not consume a credit. You pay only for results. Q: Can AI agents like Claude use this directly? A: Yes. CPFHub.io exposes a remote MCP server at api.cpfhub.io/mcp. Any MCP-compatible AI agent runtime, including Claude and Cursor, can call CPF lookups as a native tool without custom integration code. Q: Does CPFHub.io support CNPJ or other Brazilian documents? A: Based on available information, the service covers CPF only. There is no published support for CNPJ, RG, or any other document type. Q: What is the difference between simple and real-time lookup? A: Simple lookup returns name, gender, and birth date from CPFHub.io's own data in roughly 150 ms. Real-time lookup queries Receita Federal directly and also returns current registration status and death year, but takes roughly 1 second per request.