Based SEO MCP
▸ What it does
Based SEO MCP is a Model Context Protocol (MCP) agent that exposes three DataForSEO-powered SEO research tools: Keyword Overview (volume, difficulty, CPC, intent, trends), Keyword Ideas (related keywords and questions), and SERP Analysis (top organic competitors). All requests are paid via x402 protocol (USDC on Base) with transparent 50% gross margin pricing over upstream DataForSEO costs. No subscriptions required.
▸ How to use it
Access the MCP endpoint at https://based-seo-mcp.mandate.md/mcp. Call tools via MCP: seo_keyword_overview, seo_keyword_ideas, or seo_serp_analysis. Provide search queries and optional location parameters. Payments are automatic via x402 micropayments (USDC on Base, eip155:84532). A free seo_price_sheet tool returns current pricing. Web interface available at https://based-seo-mcp.mandate.md. Source code open on GitHub (MIT licensed).
▸ Evidence basis
Live, fully functional product: (1) Working website with clean UI, clear value prop, and example data ('best crypto wallet' showing 74k volume, KD 41, $2.13 CPC). (2) Live MCP endpoint accessible at https://based-seo-mcp.mandate.md/mcp with valid JSON schema showing 4 callable tools and transparent pricing. (3) Proper ERC-8004 registration with agent metadata at .well-known/agent-metadata.json specifying skills, x402 payment support, and service endpoints. (4) Real upstream integration with DataForSEO (verified in metadata and website). (5) Transparent pricing model documented: $0.10 per keyword overview/ideas, $0.004 per SERP analysis, with 50% margin policy clearly stated. (6) Open-source code referenced (GitHub: SwiftAdviser/based-seo-mcp, MIT license). (7) x402 payment infrastructure confirmed (Base chain, USDC, with 2x multiplier). (8) Production-grade stack (Next.js 16, shadcn/ui). No usage stats or customer logos visible, but infrastructure and product coherence are solid.
▸ Risks
(1) Source repository marked 'private'—cannot verify actual implementation or code quality. (2) No visible user testimonials, case studies, or adoption metrics. (3) Pricing model entirely dependent on DataForSEO API availability and cost stability; upstream outages or cost increases directly impact service. (4) x402 payment mechanism is nascent and tied to Base L2 adoption; liquidity or network issues could block transactions. (5) Small team/startup risk—no organizational backing evident. (6) SEO data is commodity; competitive pressure from established SaaS tools (Ahrefs, SEMrush) remains high despite cost argument. (7) No explicit SLAs, rate limits, or uptime guarantees documented.
▸ Raw data
- Chain
- base
- Token ID
- 50963
- First seen
- 5/18/2026, 9:00:53 AM