Mmcp.market

Head to head

Json Schema Validator vs POPCORN MCP

Same numbers we show everywhere else, lined up. Ratings come from users, the grade comes from our scanner, adoption comes from public registries.

Json Schema Validatorio.github.ryuamarines/json-schema-validator
C
No reviews yet

Validates JSON against a JSON Schema, lists violations. x402 payment required (testnet USDC).

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POPCORN MCPio.github.violetclaire/popcorn-mcp
B
No reviews yet

Signed time and SHA-256 witness receipts for agents, with offline verification and x402 payment.

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The short version

Neither has been reviewed yet, so the comparison rests on the scan and the public usage numbers. The safety scan favours POPCORN MCP (80/100 against 67). Json Schema Validator is hosted and callable through the gateway; POPCORN MCP runs on your own machine. POPCORN MCP has noticeably more public adoption.

 Json Schema ValidatorPOPCORN MCP
User ratingNo reviews yetNo reviews yet
Safety gradeC67/100B80/100
AdoptionNewGrowing
GitHub stars–0
Downloads / week–208
Runs whereHosted (remote)Your machine (local)
Gateway-readyYesNo
Tools16
Write actions——
Price per callFreeFree
Licence—NOASSERTION
Last release—2026-09-19
CategoryFinanceFinance

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