Money-Engine x402 Research
Server Details
Free agent discovery + paid x402 research (outline 0.01 / brief 0.02 USDC Base).
- Status
- Healthy
- Uptime
- 100.0% over the last 24 hours
- Last Tested
- Transport
- Streamable HTTP · MCP 2024-11-05
- URL
- ChatGPT
- –
- Claude
- –
TDQS
Scored across 6 tools
Each tool has a distinct primary purpose (discovery, health, free sample, paid outline, paid brief, alternative scrub), but the conversion ladder is mentioned in multiple tools, which could cause slight confusion for an agent about which free tool leads where.
All tools consistently use the 'x402_' prefix followed by a descriptive compound noun (e.g., discovery, health, research_brief, sample_outline), creating a predictable and clear naming pattern.
With 6 tools, the set is well-scoped for a research API with a free-to-paid conversion ladder, covering all necessary stages without superfluous or missing tools.
The tools cover the complete research generation flow (discovery, health check, free sample, paid outline, paid brief), with an alternative scrub demo. A minor gap is the absence of a history or status tool for previously generated research.
Available Tools
6 toolsx402_discoveryAInspect
Free x402 discovery document (resources, prices, payTo, facilitator, convertLadder).
Inputs: no named parameters.
x402_healthAInspect
Free liveness + pricing for the money-engine Research API (x402 USDC on Base). Ladder: free sample_outline → outline 0.01 → brief 0.02.
Inputs: no named parameters.
x402_research_briefAInspect
Paid full research brief (0.02 USDC Base · upgrade). Free first: x402_sample_outline; optional outline 0.01 first. Body {topic}. Without paymentHeader returns 402 + accepts[].
Inputs: topic (required), paymentHeader.
x402_research_outlineBInspect
Paid research outline (0.01 USDC Base · first pay). Free first: x402_sample_outline. Body {topic}. Without paymentHeader returns 402 + accepts[].
Inputs: topic (required), paymentHeader.
x402_sample_outlineAInspect
FREE research teaser (3 bullets). Convert ladder: this tool → paid x402_research_outline 0.01 USDC → x402_research_brief 0.02 USDC Base. Body {topic?} default x402.
Inputs: topic.
x402_sample_scrubCInspect
Free sample data-scrub / leak-guard teaser (dirty→clean demo). Alt path — primary convert is x402_sample_outline → outline 0.01.
Inputs: no named parameters.
Tool Schema Changelog
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
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Related MCP Connectors
x402 cited web research and synthesis for agents. $1.99 per completed brief.
Daily Agent Signal: x402 research; coverage varies. Free preview, $0.03 USDC on Base. SEC/OFAC.
Paid research briefings for agents: $0.10 USDC/question on Base Sepolia via x402. ERC-8004 #9395.
Paid agent services settled in USDC on Base via x402. Signed, verifiable, and free to verify.
Related MCP Servers
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- AlicenseNot gradedqualityBmaintenancePremium research articles for AI agents with x402 payment on Base network.1MIT
- AlicenseNot gradedqualityDmaintenanceThe open marketplace for the agent economy — Buy any of 24,000+ live x402 services with USDC on Base.5MIT

Agent Search Proofficial
FlicenseNot gradedqualityAmaintenanceEnables agent-native web search and multi-angle research synthesis with pay-per-call USDC payments on Base via x402, requiring no API keys or subscriptions.-
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