Canonical: https://molo17.com/validator/ Markdown mirror: https://molo17.com/validator/index.md Title: Validator · Gluesync · MOLO17 Description: Compare a replicated entity with its target, see every difference, and optionally write the source values back. Schedule it with Chronos or call it from an MCP client. Gluesync Module # Validator Compare a replicated entity with its target, see every difference, and optionally write the source values back. Schedule it with Chronos or call it from an MCP client. [Explore Validator](#features) [Talk to our team](/contacts/?topic=gluesync-platform#contact-form-section)  Why Validator ## Know the target still matches the source 01 / Silent drift ### Replication is not a proof A pipeline can be running while rows diverge: a filtered write, a manual edit on the target, a type that did not survive the mapping. 02 / Ad-hoc SQL ### Diffs that live in a spreadsheet Comparing two databases by hand does not tell the platform, does not page a large table safely, and does not leave an audit of what was fixed. 03 / The platform outcome ### One entity, one answer Validator scans source and target in key order, stores the differences, and can reconcile them under the same permissions as the Control Plane. Capabilities ## Compare, alert, or repair Validator is part of Gluesync 2.3. It compares one entity at a time and reports rows only on the source, rows only on the target, mismatched values, and schema differences. Control Plane ### Open it on the entity you mean #### From the nav, the entity menu, or entity detail Validate jumps straight to that pipeline and entity. Agents and the primary key come from the entity definition, so you do not re-enter connection details. - Source only, target only, value mismatch, and schema difference - Reconcile a selection or the whole run - Mismatched cells stay marked while the fix is applied [View Validator docs ↗](https://docs.molo17.com/gluesync/latest/gs-modules/validator.html) Validator  Chronos ### Schedule it, or fail closed #### entity\_validate with an optional reconcile A Validate job checks each selected entity. Leave reconciliation off and any difference fails the job: the breakdown is the error Chronos sends by webhook and email. Turn it on and Chronos asks Core Hub to reconcile every remaining difference, failing only when a row could not be written. - Schedules, chained events, and trigger flows - At least one entity; groups are not a target - Platform events for started, completed, differences, failed, and reconciled [View scheduled validation ↗](https://docs.molo17.com/gluesync/latest/gs-modules/chronos-validator.html) MCP and API ### Same comparison for agents #### Six tools in the 125-tool Core Hub catalog trigger\_data\_comparison needs a pipeline and an entity. reconcile\_data\_comparison\_differences can fix every remaining difference with reconcile\_all, or a list of difference ids. - list\_data\_comparison\_runs and get\_data\_comparison\_run - list\_data\_comparison\_differences - cancel\_data\_comparison\_run [View Core Hub MCP docs ↗](https://docs.molo17.com/gluesync/latest/gs-modules/corehub-mcp.html) Explore the platform ## Continue exploring Gluesync Validator sits next to Query Studio in Gluesync Knowledge. Use Query Studio to inspect a row, Validator to prove the entity still matches. [### Query Studio Inspect schemas and run SQL in the same Control Plane where Validator lives. Explore Query Studio →](/query-studio/) [### Schedules and events Run Validator on a schedule or from a platform event, with optional reconciliation. Explore Schedules and events →](/schedules-and-events/) [### Core Hub MCP server Start a comparison, read differences, and reconcile from any MCP client. Explore Core Hub MCP server →](/corehub-mcp/) [ ### Gluesync Real-time CDC replication. Validator checks that the target still matches the source. Explore Gluesync →](/gluesync/) Resources ## Guides, roadmap and support Documentation ### Documentation Technical guides, API reference, deployment tutorials. [Read documentation ↗](https://docs.molo17.com) Roadmap ### Public Roadmap What we're building next. Submit feature requests. [View roadmap ↗](https://roadmap.molo17.com) Support ### Support Access technical support and operational assistance. [Get support ↗](https://support.molo17.com) Status ### Service Status Real-time platform availability and incident history. [Check status ↗](https://status.molo17.com) ## Check the target, then decide whether to fix it Start a free trial or talk with the MOLO17 team about validation and reconciliation on your pipelines. [Request a free trial](/get-gluesync/) [Talk to our team](/contacts/?topic=gluesync-platform#contact-form-section)