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X402 launches crypto-paid web search API for AI agents

By PulseAugur Editorial · [1 sources] ·

X402 has launched a new API that provides AI agents with web search capabilities without requiring traditional API keys. Instead, it uses an HTTP 402 error code to communicate payment requirements, which can be fulfilled using cryptocurrencies like USDC on the Base or Solana networks. The service offers a free trial and details pricing for search and extraction tools, comparing them to competitors like Exa and Tavily. AI

IMPACT Provides AI agents with a novel, crypto-based method for accessing web search capabilities.

RANK_REASON This is a new product/service launch from a company that is not a tier-1 frontier model lab.

Read on dev.to — MCP tag →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

X402 launches crypto-paid web search API for AI agents

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Signal score
32 / 100
Composite score across the factors below. Higher = stronger signal that this story matters right now.
Newsworthiness bucket
Tool
This is a new product/service launch from a company that is not a tier-1 frontier model lab.
Source corroboration
Single-source cluster
Only one publisher covered this so far. Single-source stories can still rank when the publisher is high-authority, but they lack cross-source corroboration.
Topics
product, infra
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High
Clearly on-topic for AI-industry coverage.
Story freshness
Breaking (< 6h)
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Full methodology in our editorial standards.

COVERAGE [1]

  1. dev.to — MCP tag TIER_1 English(EN) · x402serps ·

    How to give your AI agent web search with x402 (no API key)

    <p>Every x402serps endpoint is a normal JSON POST. Send it without payment and you get <strong>HTTP 402</strong> back with payment requirements (price, network, payTo). An x402 client signs a USDC payment, puts it in the <code>X-PAYMENT</code> header and retries. There are no API…

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