> ## Documentation Index > Fetch the complete documentation index at: https://docs.synq.io/llms.txt > Use this file to discover all available pages before exploring further. # BatchGetEntityOverlays > For each entity, list every overlay that claims it. The response has one entry per requested id, in the order you asked, so you can match results positionally and never have to tell "absent" from "empty". An entity that belongs to no overlay comes back with empty lists. Freshness. Which overlays exist and what they are attached to is up to date the moment you change it — create an overlay, delete one, point an ownership at a different data product, and the next call reflects it. What each overlay *contains* is recomputed periodically, so an asset that newly satisfies an existing rule — a table appearing in a folder a rule watches — shows up shortly afterwards rather than instantly. Returns PERMISSION_DENIED if your credential can read neither data products nor owners. If it can read one but not the other, the call succeeds and the list you may not read comes back empty rather than failing. ## OpenAPI ````yaml /api-reference/openapi.yaml post /api/overlays/v1/by-id openapi: 3.1.0 info: version: '1.0' title: SYNQ servers: - url: https://developer.synq.io - url: https://api.us.synq.io - url: https://api.au.synq.io security: - bearerAuth: [] tags: - name: synq.incidents.v1.IncidentsService description: IncidentsService is a service for managing Incidents. - name: synq.auth.iam.v1.IamService - name: synq.dataproducts.v1.DataproductsService description: DataproductsService can be used to manage data products. - name: synq.dataproducts.v2.DataproductsService description: |- DataproductsService manages data products — named, owned groupings of data assets with a membership definition, a priority and an optional folder. Ids are opaque UUIDs supplied by the caller, which makes writes idempotent (a retried create converges instead of duplicating). Mutable fields are optional on Upsert: a field that is set is written, a field that is omitted is left unchanged. Pass the `etag` you last read to guard against overwriting a concurrent edit. A data product is a leaf in the reference graph — its definition may not reference another data product or domain — so membership resolution always terminates. - name: synq.queries.v1.QueriesService description: |- QueriesService compiles and evaluates ResolverQL — the compact text query language used across Coalesce Quality to select entities — over the public API. ResolverQL is a string DSL (for example `with_type("TABLE")` or `in_folder(...)`); a structured `synq.queries.v1.Query` is its parsed, machine-readable form. This service is the bridge between the two and the read-only execution surface for both: - `TranslateResolverQl` compiles a ResolverQL expression into a structured `Query` without evaluating it — inspect it, validate it, or reuse it as a filter on another API (entity listing, folder browsing, ...). - `ResolveQuery` compiles a ResolverQL expression (or takes an already-structured `Query`), evaluates it against the catalog, and returns the matched entity ids. This is the general author -> resolve loop. - name: synq.queries.v1.NLQueryService description: >- NLQueryService generates structured Query protos from natural language descriptions using an LLM. - name: synq.owners.v1.OwnersService description: |- OwnersService manages owners and their ownerships — the "alert routing as code" surface. An owner is a named responsible party with notification channels (contacts); an ownership assigns a set of assets to an owner and configures the alerts routed to it. Owner is the resource, ownership its sub-resource: an ownership is meaningless without its owner, and deleting an owner deletes its ownerships. Ids are opaque UUIDs supplied by the caller, which makes writes idempotent (a retried create converges instead of duplicating). Mutable fields are optional on the Upsert calls: a set field is written, an omitted field is left unchanged. Pass the `etag` you last read to guard against overwriting a concurrent edit. Related: `synq.dataproducts.v2.DataproductsService` (an ownership can own a whole data product), `synq.alerts.v1.AlertsService` (how the configured alerts are reported), and `synq.users.v1.UsersService` (resolve the users behind `UserContact` and Slack/Teams mentions). - name: synq.alerts.services.v1.AlertsService description: AlertsService provides operations for managing alert configurations. - name: synq.entities.folders.v1.FoldersService description: >- FoldersService discovers and browses the folder / containment hierarchy of the catalog: the roots data hangs from, the sub-folders under any folder, the folders a given entity lives in, and the entities contained in a folder. It is a read / navigation surface, not folder management — there are no create, move, or delete operations. Addressing: every folder has an opaque `folder_entity_id` (round-trip it verbatim) and a structured `FolderRef{root_entity_id, folders[]}` (the human-friendly form). Entities — both folder members and the ids you pass to `GetFolderOf` — are named by their opaque entity id, the same id used across the rest of the entities API. Depth footgun: membership is SHALLOW by default. `Browse` returns only the direct children of a folder, and `ListMembers` returns only the entities placed directly in the folder. Set `deep = true` (or raise `Browse.depth`) to recurse into sub-folders. - name: synq.entities.constraints.v1.TableConstraintsService description: >- TableConstraintsService provides access to table constraint and index information. - name: synq.entities.custom.v1.RelationshipsService description: >- RelationshipsService allow management of relationships between entities. Relationships can be created, updated, and deleted between 2 custom entities, or between a custom entity and Coalesce Quality native entity.enum There is no option to create relationships between 2 Coalesce Quality native entities (dbt model, BI dashboard, etc.). - name: synq.entities.custom.v1.TypesService description: TypesService is a service for managing custom entity types. - name: synq.entities.custom.v1.FeaturesService - name: synq.entities.custom.v1.GroupsService description: >- It eliminates the need to keep state on client side to remember which assets were already created and which should be deleted. The server will keep track of the current state of the group and client can always send the intended new state. The server will calculate the diff and entities that are no longer present in the group will be removed. Example: 1. group has entities A, B, C at time t1 2. client sends group with entities B, C, D at time t2 3. server will remove entity A from the system and update the current state of the group to B, C, D The service is designed to be idempotent and can be called multiple times with the same state without causing any side effects. - name: synq.entities.custom.v1.EntitiesService description: >- custom.EntitiesService is a service for managing custom entities. Entities can represent various data platform concepts such as services, consumers, applications or data pipelines that are not natively available in Coalesce Quality. Entities are identified by a unique identifier and can be created, updated, read and deleted. - name: synq.entities.custom.v1.ChecksRelationshipsService - name: synq.entities.custom.v1.EntityExecutionsService - name: synq.entities.resolve.v1.IdentifierResolveService description: >- IdentifierResolveService resolves identifiers to their Coalesce Quality paths and identities. - name: synq.entities.sql_insights.v1.SqlInsightsService description: >- SqlInsightsService exposes analytical information about the SQL used across a workspace's entities. It answers questions such as "which SQL constructs are used in my warehouse, and by how many entities" and "what SQL constructs does this specific entity use", without requiring the caller to re-parse any SQL. - name: synq.entities.entities.v1.EntitiesService description: EntitiesService is a service for retriving any entity. - name: synq.entities.checks.v1.ChecksCategoriesService description: |- ChecksCategoriesService lets workspace admins set explicit category overrides on individual checks. An explicit category is the authoritative category for a check — it takes precedence over the categories computed by the workspace's categorisation rules. It is a public API so customers can manage check categories programmatically; the same service is also mounted on the internal API. The workspace and the acting identity are always taken from the request context, never from the payload. - name: synq.entities.checks.v2.ChecksCategorisationRulesService description: |- ChecksCategorisationRulesService manages the rules that categorise a workspace's checks automatically. A rule says "checks matching this predicate get this category on this dimension". Rules are the scalable way to categorise: they apply to checks that already exist and to every check ingested afterwards, so a new dbt package or a new warehouse does not mean a fresh round of manual tagging. A rule-computed category is the lowest-precedence source — a category set explicitly on a check through ChecksCategoriesService, and one the producing tool declared, both win over it. A typical loop is: ListCategorisationFilters to see what the workspace's checks look like, PreviewRule to check the reach of a candidate, UpsertRule to save it, then GetRecategorisationStatus to confirm the existing checks have caught up. Every workspace starts with a set of platform-provided rules covering the common cases. They are visible here, they can be superseded by a workspace rule of any priority, and they cannot be edited from a workspace. - name: synq.entities.checks.v2.ChecksCategoriesService description: |- ChecksCategoriesService reads and edits the categories of the checks in a workspace. Categorising checks is what turns a long list of tests into a picture of data quality: it lets you ask how much of a data product is covered for completeness, or which freshness checks exist across three warehouses that each name the same idea differently. Every check resolves to at most one category per dimension: * technical — what kind of check this is, mechanically ("nullness", "uniqueness", "freshness"); * governance — what the check is for, in data-quality terms ("Completeness", "Accuracy", "Timeliness"). The two are independent, and each resolves from three sources, in descending precedence: a category set explicitly on the check through this service, a category the producing tool declared, and a category one of the workspace's categorisation rules computed. Rules are managed by ChecksCategorisationRulesService and are the right tool for anything that generalises; set a category explicitly only for the checks that are genuine exceptions. The workspace and the acting identity always come from the request credentials, never from the payload. - name: synq.entities.code.v1.CodeService description: >- CodeService is a service for retrieving code associated with entities in the system. It provides functionality to access and manage code artifacts such as SQL queries, Python scripts, dbt models, and other code configurations that are part of Coalesce Quality entities. - name: synq.entities.changes.v1.ChangesService description: >- ChangesService provides functionality to track and retrieve all types of changes to data entities. This unified service returns ALL change types for an entity: - Git commits: Changes to code files (dbt models, SQL files) tracked in version control - Schema changes: Database schema modifications (columns added/removed/changed) - SQL definition changes: View/materialized view definition updates detected by Coalesce Quality Changes are returned with structured metadata including: - For git commits: structured statistics (directories, file types, top changes) - For schema changes: detailed column-level diffs - For SQL changes: before/after SQL definitions Use cases: - "What changed in the last week for table X?" → Returns git commits, schema changes, SQL changes - "Show me all commits affecting this dbt model" → Returns git commits with lineage context - "What schema changes happened to this table?" → Returns schema changes detected by Coalesce Quality - name: synq.entities.executions.v1.EntityExecutionsService description: 'Deprecated: Use [synq.entities.custom.v1.EntityExecutionsService] instead' - name: synq.entities.executions.v2.EntityExecutionsService description: >- EntityExecutionsService provides read-only access to entity execution history. This service allows customers to retrieve information about all executions that happened on their entities, including execution status, timing, and messages. Use cases: - Retrieve execution history for specific entities - Filter executions by time range, status, or execution type - Get aggregated summaries of execution activity - Track execution trends and patterns - name: synq.entities.orchestration.v1.OrchestrationService description: >- OrchestrationService provides information about orchestration relationships between entities. This includes relationships between Airflow tasks and transformation models (dbt, SQLMesh), as well as task-to-task dependencies. - name: synq.entities.coordinates.v1.DatabaseCoordinatesService description: >- DatabaseCoordinatesService is a service for getting database coordinates of Entities. - name: synq.entities.annotations.v1.AnnotationsService description: >- AnnotationsService provides operations for managing and querying entity annotations. Annotations are key-value pairs that can be attached to entities for categorization and filtering. - name: synq.entities.lineage.v1.LineageService description: |- LineageService allows you to fetch: * Entity level lineage from a starting point of one or more entities. * Column Level lineage from a starting point of multiple columns of a single entity. - name: synq.entities.schemas.v1.SchemaMismatchesService description: >- SchemaMismatchesService provides access to schema drift information between data platform tables and their definitions (e.g., dbt models). - name: synq.entities.schemas.v1.SchemasService description: EntitiesService is a service for retriving any entity. - name: synq.entities.impact.v1.ImpactService - name: synq.entities.status.v1.EntityIncidentsService description: EntityIncidentsService is the service which retrieves entity status. - name: synq.entities.status.v1.EntityIssuesService description: EntityIssuesService is the service which retrieves entity issues status. - name: synq.integrations.v1.IntegrationsService description: |- IntegrationsService manages connections from Coalesce Quality to your data systems (warehouses, databases, and transformation tools). Concurrency: every integration carries an opaque `etag`. Read it from `GetIntegration` / `ListIntegrations`, then pass it back on `UpdateIntegration` / `DeleteIntegration` to ensure you modify the version you last saw. A stale etag is rejected with ABORTED (HTTP 409). Omit the etag for last-write-wins. Quota: each workspace has a limit on the number of integrations. Creating beyond the limit is rejected with RESOURCE_EXHAUSTED. Secrets: credential fields (passwords, tokens, keys) are write-only. They are masked (returned empty) on every read. On update, omit a secret to keep it, send a new value to rotate it, or send an explicit empty string to clear it (where the field is `optional`). - name: synq.datachecks.v1.TriggerService description: TriggerService provides synchronous execution of datachecks on entities. - name: synq.datachecks.sqltests.v1.SqlTestsService description: SqlTestsService is a service for managing SqlTests. - name: synq.datachecks.sqltests.v1.SqlTestsDeploymentRulesService description: |- SqlTestsDeploymentRulesService manages SqlTestDeploymentRules — rules that dynamically deploy SQL test templates onto every table or view a query matches, resyncing over time as the match set changes. - name: synq.datachecks.testsuggestions.v1.TestSuggestionsService - name: synq.savedviews.v1.SavedViewsService description: >- SavedViewsService manages saved views — named, reusable selections over your entities (and other surfaces) with display configuration, sharing and per-user pinning. A saved view is owned by the user who created it. It can be kept private, shared with the whole workspace, or granted to specific users. Reads return, for the calling user, how each view relates to them (mine / shared / granted) and what they are allowed to do with it. Workspace administrators can manage any view in the workspace. - name: synq.domains.v1.DomainsService description: DomainsService can be used to manage domains. - name: synq.domains.v2.DomainsService description: >- DomainsService manages data domains — named areas of ownership that group the assets, data products and sub-domains belonging to one part of the business. Ids are opaque UUIDs supplied by the caller, which makes writes idempotent (a retried create converges instead of duplicating). Mutable fields are optional on Upsert: a field that is set is written, a field that is omitted is left unchanged. Pass the `etag` you last read to guard against overwriting a concurrent edit. A domain may contain other domains and data products, so membership resolution is recursive. Every write that adds such a reference — including a change of `parent_id` — is rejected if it would close a loop, so a definition can always be resolved in finite time. - name: synq.domains.members.v1.DomainMembersService description: DomainMembersService can be used to manage domain memberships. - name: synq.agent.recon.v1.SuiteDeploymentService description: |- SuiteDeploymentService is the platform plane of reconciliation. SuiteConfigService is the developer/authoring sandbox (edit, version, run ad-hoc with your own credentials — preview-only, no Entity, no Run, no Issue). A deployment is what SYNQ actually runs on the workspace's behalf: a frozen snapshot of a suite config, mapped to workspace-level SYNQ integrations, optionally scheduled or triggerable by API. Identity: every deployment has a stable deployment_id (UUIDv7) assigned on first promote. It survives re-promotes, schedule/mapping changes, and pause/resume. Downstream AssetCommand / RunCommand publication keys off deployment_id so Entity identity does not fragment on promote churn. - name: synq.agent.recon.v1.YamlService description: >- YamlService provides stateless conversion between YAML config format and proto. This is useful for UI editors that need to display/edit suite configs as YAML. - name: synq.agent.sre.v1.TriageService description: >- Service for managing issue triage operations, allowing LLM agents to conclude investigations and record evidence during the triage process. - name: synq.agent.sre.v1.LlmService description: Service for evaluating LLM requests and producing structured output. - name: synq.agent.sre.v1.FeatureRequestService description: >- FeatureRequestService allows MCP clients to submit feature requests when users encounter missing capabilities. This is a last-resort service — it should only be used when no existing tool can fulfill the user's request. - name: synq.platforms.v1.PlatformsService description: PlatformsService is a service for managing Platforms and Integrations. - name: synq.issues.v2.IssuesService description: IssuesService is a service for managing Issues. - name: synq.issues.issues.v1.IssuesService description: IssuesService is a service for managing Issues. - name: synq.overlays.v1.OverlaysService description: |- OverlaysService answers which organizational overlays claim an entity. An overlay is a grouping you lay over your catalog rather than something the warehouse itself knows about. Two kinds exist today: a **data product**, which groups the assets that make up something your organization delivers, and an **owner**, which names the person or team responsible for a set of assets and where alerts about them go. Each is defined by a membership rule, not by an explicit list, so what belongs to one changes as your warehouse does. "Owner" here means stewardship — who is accountable for an asset and who hears about it when something breaks. It is not the structural containment sense the word carries elsewhere in the API, where an asset can be said to own the checks and monitors declared on it. Nothing this service returns describes that relationship. This service reads that membership backwards. The defining services answer "what is in this data product"; this one answers "which data products and owners claim this table" — the question you have when you are looking at one asset and want to know who cares about it and what it feeds. Membership follows identity. Where the same table is represented more than once in your catalog — a transformation model and the warehouse table it builds — an overlay whose rule matches one of them claims the others too. So an alert routed by ownership reaches the responsible party whichever representation raised it, and you do not have to know which one a rule was written against. Two consequences worth planning around. You can ask about whichever representation you happen to hold and get the same answer, so there is no need to resolve an identity group first. And if you do ask about several members of one group in a single call, each comes back with its own entry carrying the same overlays — correct, but redundant, so ask about one member per group when you are near the request limit. Related services: - `synq.dataproducts.v2.DataproductsService` and `synq.owners.v1.OwnersService` define the overlays read here, and turn an id from a response into a name, a description and its contact channels. - `synq.entities.resolve.v1.IdentifierResolveService` turns an identifier you already hold — a warehouse table name, a dbt model — into the `entity_id` these calls take. - name: synq.git.commits.v1.CommitsService - name: synq.schedule.v1.ScheduleService description: ScheduleService provides schedule evaluation utilities. - name: synq.extensions.atlan.workflows.v1.AtlanWorkflowService - name: synq.extensions.atlan.integrations.v1.AtlanIntegrationService - name: synq.extensions.atlan.provider.v1.AtlanProviderService - name: synq.monitors.custom_monitors.v1.CustomMonitorsService - name: synq.monitors.history.v1.HistoryService - name: synq.monitors.predictions.v1.MonitorPredictionsService description: Access to anomaly detection model predictions and raw metric timeseries. - name: synq.monitors.automated_monitors.v1.DeploymentRulesService - name: synq.monitors.info.v1.MonitorInfoService - name: synq.ingest.openlineage.v1.OpenlineageService - name: synq.ingest.cloudwatch.v1.CloudwatchService - name: synq.ingest.airflow.v1.AirflowLogsService - name: synq.ingest.dwh.v1.DwhService - name: synq.deliveries.v1.DeliveriesService description: >- DeliveriesService reports what was sent to your notification integrations — webhooks, PagerDuty, Opsgenie — and what came back. It answers the three questions an integration owner has. "Did this event reach my endpoint": list the deliveries for an event id and read the outcome of each. "Why did my endpoint reject it": read the attempts, which carry the request as it was sent and the response as it came back. "Why did I get nothing at all": every delivery that sent nothing records a reason, so a silent integration can be explained rather than guessed at. Deliveries are kept for 90 days. Credential-bearing header values are never returned, on either side of an attempt — see `Header`. paths: /api/overlays/v1/by-id: post: tags: - synq.overlays.v1.OverlaysService summary: BatchGetEntityOverlays description: |- For each entity, list every overlay that claims it. The response has one entry per requested id, in the order you asked, so you can match results positionally and never have to tell "absent" from "empty". An entity that belongs to no overlay comes back with empty lists. Freshness. Which overlays exist and what they are attached to is up to date the moment you change it — create an overlay, delete one, point an ownership at a different data product, and the next call reflects it. What each overlay *contains* is recomputed periodically, so an asset that newly satisfies an existing rule — a table appearing in a folder a rule watches — shows up shortly afterwards rather than instantly. Returns PERMISSION_DENIED if your credential can read neither data products nor owners. If it can read one but not the other, the call succeeds and the list you may not read comes back empty rather than failing. operationId: synq.overlays.v1.OverlaysService.BatchGetEntityOverlays requestBody: content: application/json: schema: $ref: >- #/components/schemas/synq.overlays.v1.BatchGetEntityOverlaysRequest required: true responses: '200': description: Success content: application/json: schema: $ref: >- #/components/schemas/synq.overlays.v1.BatchGetEntityOverlaysResponse components: schemas: synq.overlays.v1.BatchGetEntityOverlaysRequest: type: object properties: entityIds: type: array items: type: string maxLength: 2048 minLength: 1 maxItems: 1000 minItems: 1 uniqueItems: true maxItems: 1000 minItems: 1 uniqueItems: true description: |- The entities to ask about: 1 to 1000 ids, no duplicates. An `entity_id` is opaque. Take one from any listing or search response, or from `synq.entities.resolve.v1.IdentifierResolveService` if what you hold is a warehouse table name or a model name, and pass it back unchanged. Do not build one yourself or parse one apart — the format carries no meaning you can rely on and is not part of this contract. title: BatchGetEntityOverlaysRequest additionalProperties: false synq.overlays.v1.BatchGetEntityOverlaysResponse: type: object properties: entities: type: array items: $ref: '#/components/schemas/synq.overlays.v1.EntityOverlays' description: One entry per requested entity, in the order they were requested. title: BatchGetEntityOverlaysResponse additionalProperties: false synq.overlays.v1.EntityOverlays: type: object properties: entityId: type: string description: The entity this entry answers for, echoed back from the request. ownerEntityIds: type: array items: type: string description: >- Owners responsible for this entity — the parties an alert about it reaches. Read their names and contact channels with `synq.owners.v1.OwnersService`. Empty when no owner claims the entity, and also when your credential may not read owners. Order is not significant and may change between calls; sort if you display them. dataproductEntityIds: type: array items: type: string description: >- Data products this entity belongs to. Read their names and definitions with `synq.dataproducts.v2.DataproductsService`. Empty when the entity is in no data product, and also when your credential may not read data products. Order is not significant and may change between calls; sort if you display them. title: EntityOverlays additionalProperties: false description: >- EntityOverlays is one entity and the overlays claiming it, one list per kind. Kinds are separate lists rather than one tagged list because what you can do with an id depends on its kind: an owner id reads through the owners service, a data-product id through the data-products service. securitySchemes: bearerAuth: type: http scheme: bearer ````