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Spark Invocation Assurance

Validate an intended paid API request against its declared contract before spending. Returns VALID, INVALID, or UNKNOWN with machine-readable reasons. Target URL is never called.

Resource URL

https://spark-api-preflight.replit.app/api/validate

Payment options

exactBase (8453)

$0.001 USDC

Max amount

Pay to
0xc2a3246d70733169b5228caaea799afe138c2b91
Timeout
300s

Tags

preflightvalidationx402apiagents

For agents

Prompt snippet for AI agents

Find and pay for this x402 resource:
URL: https://spark-api-preflight.replit.app/api/validate
Type: http
Sources: payai, thirdweb

Developer