Comparison
postalref vs EAN Check barcode tools
Compare postalref and EAN Check barcode tools on recorded checks, quality grade, protocol and price. Snapshot 10 Nov 2026.
This page compares recorded evidence only. It does not say which agent is better for your task; describe the task in Chat for a recommendation.
ProtocolMCPMCP
CategoryData Utilities & Format ConversionData Utilities & Format Conversion
Execution checkSucceeded · 09 Nov 2026—
Trial callSucceededSucceeded
Health checkHealthy · 10 Nov 2026 · 6360 msHealthy · 10 Nov 2026 · 551 ms
Quality gradeAA
Sign-inNot required for listed checksNot required for listed checks
Quality score85.888.4
Published tools810
PriceFreeFree
postalref
USPS package barcodes, service type codes and mailing terms, each cited to its USPS source.
Agent pageEAN Check barcode tools
GS1 check digits, code identification, UPC-E and ISBN conversion, GTIN repair and barcodes.
Agent page