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tecton-ai

Tecton MCP Server

Official
by tecton-ai

query_tecton_sdk_reference_tool

Look up Tecton SDK reference for specific classes and functions to get import paths, definitions, and docstrings for accurate code usage.

Instructions

Fetches the Tecton SDK reference for a specific list of classes/functions.

IMPORTANT: The class_names list MUST only contain names from the 'Available classes/functions' list below. Providing any names not in this list will result in an error or empty output.

Use this tool when you need information about specific Tecton components from the allowed list.

Output Format:

  • Starts with a bulleted list of the found public classes/functions matching the query.

  • Followed by details for each item, including:

    • Type (Class/Function)

    • Name

    • Recommended import path (e.g., tecton or tecton.types)

    • The definition header (e.g., class FeatureView(...) or def batch_feature_view(...))

    • The full docstring.

Available classes/functions: Aggregate, AggregationFunction, AggregationLeadingEdge, Array, Attribute, AutoscalingConfig, BatchFeatureView, BatchSource, BatchTriggerType, BigQueryConfig, BigtableConfig, CacheConfig, Calculation, ComputeMode, DataFrame, DataSource, DatabricksClusterConfig, DatabricksJsonClusterConfig, Dataset, DatetimePartitionColumn, DeltaConfig, DynamoConfig, EMRClusterConfig, EMRJsonClusterConfig, Embedding, Entity, FeatureServerGroup, FeatureService, FeatureTable, FeatureVector, FeatureView, Field, FileConfig, FilterContext, HiveConfig, IcebergConfig, KafkaConfig, KafkaOutputStream, KinesisConfig, KinesisOutputStream, LifetimeWindow, Map, MockContext, ModelConfig, OfflineStoreConfig, OnlineServingIndex, PandasBatchConfig, ParquetConfig, ProvisionedScalingConfig, PushConfig, PyArrowBatchConfig, RealtimeContext, RealtimeFeatureView, RedisConfig, RedshiftConfig, RequestSource, RiftBatchConfig, SdkDataType, Secret, SnowflakeConfig, SparkBatchConfig, SparkStreamConfig, StreamFeatureView, StreamProcessingMode, StreamSource, Struct, TectonDataFrame, TectonTimeConstant, TestRepo, TimeWindow, TimeWindowSeries, TransformServerGroup, Transformation, UnityCatalogAccessMode, UnityConfig, Workspace, approx_count_distinct, approx_percentile, batch_feature_view, const, first, first_distinct, last, last_distinct, materialization_context, pandas_batch_config, pyarrow_batch_config, realtime_feature_view, spark_batch_config, spark_stream_config, stream_feature_view, transformation

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
class_namesYes

Schema Changelog

Changes observed during successful MCP inspections. Dates show when Glama detected each change.

  1. First observedv0.1.0

TDQS

A4.6/5.0
Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations present, the description carries the full burden, and it does this well. It warns that invalid names will 'result in an error or empty output,' and it details exactly what the returned output will include: a bulleted list, type, name, import path, definition header, and full docstring. This makes the tool's behavior predictable to an agent.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The prose is concise and well-structured, with the critical constraint front-loaded and output format clearly sectioned. The description is long because of the extensive allowed classes/functions list, but that list is necessary to prevent invalid calls, so the length is justified.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Since there is no output schema, the description appropriately documents the return structure, including details like import path and definition header. It also handles the main failure mode. However, it does not provide any guidance about close alternatives or mention the full-reference sibling, which would have made the context complete.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters5/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The input schema provides only the parameter name and type, with 0% schema description coverage, so the description must fully explain class_names. It does, by requiring names to come from the provided 'Available classes/functions' list and by describing the consequence of violating that constraint. The exhaustive allowed-value list adds substantial semantic meaning beyond the raw schema.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description opens with a specific verb and resource: 'Fetches the Tecton SDK reference for a specific list of classes/functions.' This clearly distinguishes it from the sibling get_full_tecton_sdk_reference_tool, since this tool is scoped to a provided list rather than returning the entire reference.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description explicitly states when to use it: 'Use this tool when you need information about specific Tecton components from the allowed list.' It does not explicitly mention when not to use it or name alternatives like query_documentation_index_tool, so it stops short of full routing guidance.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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