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bkend-data

Skill605 starsChanged 3 months agoApache-2.0View on GitHub

bkend.ai database — CRUD, column types, filtering, sorting, relations, indexing. Triggers: bkend table, bkend CRUD, bkend column, bkend relation, bkend data

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3 rules. About 0 are common, 0 are distinctive, and 3 are very specific to this project.

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  1. Very specific:

    All Data CRUD tools require: organizationId, projectId, environmentId (from get_context).

    line 81
  2. Very specific:

    Use search_docs tool to access these guides:

    line 95
  3. Very specific:

    Use get_operation_schema to get any tool's input/output schema.

    line 102

≈ “Common” is an estimate: at least 1 in 5 of the 350,495 skill files we read have a rule of the same kind, not the same words. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.

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Files
SKILL.md

bkend.ai Database Guide

Column Types (7)

TypeDescriptionExample
StringTextname, email
NumberNumericage, price
BooleanTrue/falseisActive
DateDate/timebirthDate
ArrayArraytags: ["a","b"]
ObjectNested objectaddress: {city, zip}
MixedAny typemetadata

Constraints

  • required: Field must have a value
  • unique: No duplicate values allowed
  • default: Default value when not provided

Auto System Fields

FieldTypeDescription
idStringAuto-generated unique ID
createdByStringCreator user ID
createdAtDateCreation timestamp
updatedAtDateLast update timestamp

Important: bkend uses id (NOT _id) in all API responses.

MCP Table Management Tools

ToolPurposeScope
backend_table_createCreate tabletable:create
backend_table_listList tablestable:read
backend_table_getGet table detail + schematable:read
backend_table_deleteDelete tabletable:delete
backend_field_manageAdd/modify/delete fieldstable:update
backend_index_manageManage indexestable:update
backend_schema_version_listSchema version historytable:read
backend_schema_version_getSchema version detailtable:read
backend_schema_version_applyApply schema version (rollback)table:update
backend_index_version_listIndex version historytable:read
backend_index_version_getIndex version detailtable:read

MCP Data CRUD Tools

ToolPurposeKey Parameters
backend_data_listList records (filter, sort, paginate)tableId, page?, limit?, sortBy?, sortDirection?, andFilters?, orFilters?
backend_data_getGet single recordtableId, recordId
backend_data_createCreate recordtableId, data: { field: value }
backend_data_updatePartial update recordtableId, recordId, data: { field: value }
backend_data_deleteDelete recordtableId, recordId

All Data CRUD tools require: organizationId, projectId, environmentId (from get_context).

Filter Operators

OperatorMeaningExample
$eqEqual{ "status": { "$eq": "active" } }
$neNot equal{ "role": { "$ne": "admin" } }
$gt / $gteGreater than / >={ "age": { "$gt": 18 } }
$lt / $lteLess than / <={ "price": { "$lt": 100 } }
$in / $ninIn / Not in array{ "tag": { "$in": ["a","b"] } }

MCP Guide Docs (via search_docs)

Use search_docs tool to access these guides:

Doc IDContent
4_howto_implement_data_crudCRUD implementation patterns
7_code_examples_dataCRUD + file upload code examples

Use get_operation_schema to get any tool's input/output schema.

REST Data API

MethodEndpointDescription
GET/v1/data/{table}List (filter, sort, page, limit)
POST/v1/data/{table}Create
GET/v1/data/{table}/{id}Get single
PATCH/v1/data/{table}/{id}Partial update
DELETE/v1/data/{table}/{id}Delete

Filtering

  • Text search: ?search=keyword
  • AND filter: ?filter[field1]=value1&filter[field2]=value2
  • Comparison operators: $eq, $ne, $gt, $gte, $lt, $lte, $in, $nin
  • Sort: ?sort=field:asc (or desc)
  • Pagination: ?page=1&limit=20 (default 20, max 100)

Relations & Joins

  • Configure table relationships
  • Join queries for related data retrieval

Index Management

  • Single/compound index creation
  • Manage via MCP backend_index_manage
  • Essential for query performance optimization

Official Documentation (Live Reference)

For the latest database documentation, use WebFetch:

Download now (ZIP)

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