Agent Tools
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FactStamp

https://agents.factstamp.dev/.well-known/agent-card.json
● healthy

Paid verification for agents: cited, dated answers about a company, a figure or a citation, each with an Ed25519 receipt that verifies offline.

Transport
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Protocol
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Price
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How to call

A2A endpoint (JSONRPC)
https://agents.factstamp.dev/mcp
Agent card
https://agents.factstamp.dev/.well-known/agent-card.json

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