search_papers
Search 226M+ academic papers across all fields with AI-ranked relevance via Semantic Scholar Graph API.
What is search_papers?
search_papers is a paid MCP tool in the Academic & Science category on agenttoll.dev. It costs $0.04 per call, settled in USDC on Base via the x402 payment protocol. No API keys, no accounts — your agent discovers it via /.well-known/agent.json, calls it, pays the $0.04 fee, and receives structured JSON.
Input parameters
{
"query": "string research query",
"limit": "optional int 5-50 default 20"
}
Example usage
{
"query": "transformer attention mechanisms"
}
HTTP endpoint
POST to this path with JSON body. Server returns 402 with x402 payment requirements.
/paid/academic/papers
How to call search_papers
Connect any MCP-compatible client (Claude Desktop, Cursor, custom agent) to the agenttoll.dev MCP endpoint:
https://agenttoll.dev/mcp
Or call the HTTP endpoint directly with an x402-capable fetch client.
Pricing & payment
FAQ
How much does search_papers cost?
$0.04 per call in USDC on Base. No subscriptions or minimums.
Do I need an API key?
No. Payment is handled by the x402 protocol. Your agent wallet sends USDC on Base, the server verifies the transfer, and returns the data.
Which AI models work with search_papers?
Any model that supports MCP — Claude, GPT-4, Gemini, or local models via an MCP client. The tool returns structured JSON that any model can parse.
How do I verify my payment?
After settlement, check /receipt/<tx> for on-chain verification via Basescan. Every payment is a real USDC transfer to 0x62a0D3d9…
