Developer Tools · Productivity
Data Package
Check
Validate a hosted Data Package descriptor AND its referenced remote data rows — types, constraints, primary keys, and cross-resource foreign keys the sandbox can't fetch
Data Package Check runs the same live engine here and in your assistant
Live playground
Use Data Package Check now
Point a tool at a hosted datapackage.json and the pinned Frictionless engine fetches the descriptor plus its remote CSV rows and validates them against Table Schema.
Your usage
—
Free forever — create a free account for a bigger monthly allowance that follows you across every app and every assistant.Pooled across every app and surface. Manage usage
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Marketplaces
Open Data Package Check where you already work — every listing runs the same live engine as this page.
- Marketplace listings are on the way. Meanwhile, point any MCP-compatible assistant straight at the live endpoint:
https://powmcp.com/data-package-check/mcp
Proof
Real apps.Real engines.Real results.
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Engine Anatomy
Proof
Data Package Check
What it does
Validate a hosted Data Package descriptor AND its referenced remote data rows — types, constraints, primary keys, and cross-resource foreign keys the sandbox can't fetch
Validate one hosted Data Package descriptor and the remote CSV resources it references against Table Schema — field types, constraints, primary keys, uniqueness, cross-resource foreign keys, and dialect, anchored to resource, row, and field — or compare two same-lineage packages before and after a refresh, with a clear row-and-schema-conformance-versus-data-truth boundary.
Tools in this application
Package Check
package_check
package_check
Package Compare
package_compare
package_compare
0USD
Free to use with fair-use rate limits.
Data Package Check questions
Scope and boundaries for Data Package Check.
01What does Data Package Check actually check?
Validate one hosted Data Package descriptor and the remote CSV resources it references against Table Schema — field types, constraints, primary keys, uniqueness, cross-resource foreign keys, and dialect, anchored to resource, row, and field — or compare two same-lineage packages before and after a refresh, with a clear row-and-schema-conformance-versus-data-truth boundary.
02What does it never do?
It reports what its pinned engine measured and nothing more — it does not judge quality, correctness of your underlying business decisions, or anything outside its stated scope, and it never fabricates a result.
03What does it cost?
Nothing. Every published app is free to use with fair-use rate limits.
04Can my assistant connect directly?
Yes — any MCP-compatible assistant can connect straight to the canonical endpoint: https://powmcp.com/data-package-check/mcp. Marketplace listings are conveniences over the same live engine.