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noaa-climate-mcp-server

Server Details

Search NOAA climate stations and datasets, fetch historical weather observations.

Status
Healthy
Last Tested
Transport
Streamable HTTP
URL
Repository
cyanheads/noaa-climate-mcp-server
GitHub Stars
2
Server Listing
NOAA Climate MCP Server

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Glama
MCP server

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Tool DescriptionsA

Average 4.4/5 across 7 of 7 tools scored.

Server CoherenceA
Disambiguation5/5

Each tool has a clear, distinct purpose: listing datasets/categories/types for discovery, finding locations and stations, retrieving a single station's metadata, and fetching actual observation data. No overlap exists.

Naming Consistency5/5

All tools follow the 'noaa_climate_<verb>_<noun>' pattern with consistent snake_case. Verbs (list, find, get, fetch) appropriately reflect the operation's nature.

Tool Count5/5

7 tools cover the full data discovery and retrieval workflow for a climate data API without being excessive. Each tool contributes a necessary step in the pipeline.

Completeness5/5

The tools comprehensively cover the API surface: listing datasets, data categories, data types, searching locations and stations, fetching station metadata, and retrieving observation records. No obvious gaps for a read-only climate data service.

Available Tools

7 tools
noaa_climate_fetch_dataFetch NOAA Climate Observation DataA
Read-only
Inspect

Fetch historical observation records from a NOAA CDO dataset for a given date range. Requires datasetId (e.g., GHCND for daily, GSOM for monthly), startDate, and endDate. Optionally scope to specific stations, locations, and data types. Date range limits per request: sub-daily and daily datasets (GHCND, PRECIP_15, PRECIP_HLY, NORMAL_DLY, NORMAL_HLY) are limited to 1 year; monthly and annual datasets (GSOM, GSOY, NORMAL_MLY, NORMAL_ANN) are limited to 10 years. For climate normals (NORMAL_*), use startDate=2010-01-01 and endDate=2010-12-31 — that is the API proxy year regardless of which 30-year period is being described. Returns flat tuples of { date, datatype, station, value, attributes }. Strongly recommended: pass units=metric or units=standard — without it, GHCND values are raw tenths-of-unit integers (TMAX=256 = 25.6°C, PRCP=12 = 1.2mm). GSOM/GSOY are already scaled.

ParametersJSON Schema
NameRequiredDescriptionDefault
limitNoMaximum number of records to return (1–1000). Defaults to 25.
unitsNoUnit system for returned values. Without this parameter, GHCND returns raw tenths-of-unit integers (TMAX=256 = 25.6°C). Strongly recommended: pass metric (SI units) or standard (Fahrenheit/inches). Optional.
offsetNoZero-based index of the first record to return for pagination. Defaults to 0.
endDateYesEnd date for observations (YYYY-MM-DD). Must be within 1 year of startDate for sub-daily/daily datasets (GHCND, PRECIP_15, PRECIP_HLY, NORMAL_DLY, NORMAL_HLY) or within 10 years for monthly/annual datasets (GSOM, GSOY, NORMAL_MLY, NORMAL_ANN). For any NORMAL_* dataset use 2010-12-31.
datasetIdYesDataset ID to query (e.g., GHCND for daily data, GSOM for monthly, GSOY for annual, NORMAL_DLY/MLY/ANN/HLY for 1981–2010 climate normals). Determines date range limit: GHCND/PRECIP_*/NORMAL_DLY/NORMAL_HLY allow 1-year max per request; GSOM/GSOY/NORMAL_MLY/NORMAL_ANN allow 10-year max.
sortFieldNoSort results by this field. Optional.
sortOrderNoSort direction. Optional; defaults to asc.
startDateYesStart date for observations (YYYY-MM-DD). For NORMAL_* datasets use 2010-01-01 regardless of the years being analyzed — 2010 is the API proxy year for all normals.
stationIdNoOne or more station IDs to filter by (e.g., ["GHCND:USC00450974"]). Obtain from noaa_climate_find_stations. Multiple IDs return comparative readings across stations. Optional.
datatypeIdNoOne or more data type IDs to include (e.g., ["TMAX", "TMIN", "PRCP"]). Without this, all data types for the dataset are returned. Use noaa_climate_list_data_types to discover valid IDs. Optional.
locationIdNoOne or more location IDs to filter by (e.g., ["FIPS:37", "ZIP:98101"]). Broader than stationId — returns data from all stations within the location. Optional.
includemetadataNoInclude pagination metadata in the response. Defaults to true.

Output Schema

ParametersJSON Schema
NameRequiredDescription
noticeNoGuidance when no records were returned — echoes query parameters and suggests how to broaden.
resultsYesFlat array of observation records sorted by date by default.
metadataNoPagination metadata. Present when includemetadata=true.
totalCountYesTotal number of matching observation records before the page limit.
effectiveQueryYesSummary of the effective query: dataset, date range, units, and any station/location/datatype filters applied.
Behavior4/5

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

Annotations indicate read-only and open-world. Description adds critical behavior: date limits, proxy year for normals, raw unit behavior without units parameter. No contradictions.

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?

Well-structured with key info front-loaded. Slightly verbose but each sentence adds unique value. Could be trimmer but reasonable for the complexity.

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?

Covers required params, optional filters, date range constraints, special cases (normals), and unit recommendations. Output schema exists, so return format mention is sufficient.

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

Parameters4/5

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

Schema covers all params (100%), but description adds value: explains why units are recommended, clarifies date limits per dataset, and references sibling tools for finding station/datatype IDs.

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 uses specific verbs ('Fetch') and resource ('historical observation records from a NOAA CDO dataset'), clearly distinguishing it from sibling tools that handle metadata or lookups.

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?

Provides detailed context on when to use (fetching data), date range limits per dataset, and special handling for normals. Does not explicitly state when not to use but implies alternatives through sibling mentions.

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

noaa_climate_find_locationsFind NOAA Climate LocationsA
Read-only
Inspect

Search for geographic locations by category (CITY, ST, CNTY, CNTRY, ZIP, CLIM_REG, etc.). Returns location IDs used in station search and data queries. Without locationCategoryId, returns all location types. Use locationCategoryId=ST to list US states (51 entries — small enough to retrieve completely). Use locationCategoryId=CITY for cities (thousands of entries — use pagination and sortField=name to navigate alphabetically). The CDO API has no name-search parameter; to find a specific city, sort alphabetically with sortField=name and page through results. Location IDs: states as FIPS:37 (NC), cities as CITY:US530031, zip codes as ZIP:98101, countries as CNTRY:US. Obtain location IDs here, then pass them to noaa_climate_find_stations or noaa_climate_fetch_data.

ParametersJSON Schema
NameRequiredDescriptionDefault
limitNoMaximum number of results to return (1–1000). Defaults to 25.
offsetNoZero-based index of the first result to return for pagination. Defaults to 0.
endDateNoFilter to locations with data on or before this ISO date (YYYY-MM-DD). Optional.
datasetIdNoFilter to locations covered by this dataset (e.g., "GHCND"). Optional.
sortFieldNoSort results by this field. Use name with sortOrder=asc to browse alphabetically when searching for a specific city or location name. Optional.
sortOrderNoSort direction. Optional; defaults to asc.
startDateNoFilter to locations with data on or after this ISO date (YYYY-MM-DD). Optional.
datacategoryIdNoFilter to locations with this data category (e.g., "TEMP"). Optional.
locationCategoryIdNoCategory filter. Use ST for states (51 entries), CNTY for counties, CITY for cities (large set — thousands of entries), CNTRY for countries, ZIP for zip codes, CLIM_REG for NOAA climate regions, CLIM_DIV for climate divisions, HYD_ACC/HYD_CAT/HYD_REG/HYD_SUB for hydrological categories. Optional — omit to return all location types.

Output Schema

ParametersJSON Schema
NameRequiredDescription
noticeNoGuidance when no locations matched — echoes applied filters and suggests how to broaden.
resultsYesMatching locations.
metadataNoPagination metadata. Present when the API returns it.
totalCountYesTotal number of matching locations before the page limit.
Behavior5/5

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

Annotations declare readOnlyHint and openWorldHint. The description adds context by explaining that there is no name-search parameter, the need for pagination, and the format of location IDs (e.g., FIPS:37, CITY:US530031). No contradiction with annotations.

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

Conciseness5/5

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

The description is well-structured: begins with purpose, then provides use-case-specific guidance, and ends with examples and downstream tool usage. Every sentence is informative, with no unnecessary repetition. It is concise yet comprehensive.

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

Completeness5/5

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

Given that an output schema exists (not shown but confirmed), the description is complete. It covers parameter usage, limitations (no name-search), and how to use the results. The tool is well-integrated into the context of sibling tools.

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?

Schema coverage is 100%, but the description adds significant value: it explains the meaning of locationCategoryId values (ST, CITY, etc.), notes that CITY returns thousands of entries, and advises using sortField=name for alphabetical navigation. This goes beyond the schema's descriptions.

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 clearly states the tool searches for geographic locations by category and returns location IDs used in station search and data queries. It distinguishes from sibling tools like noaa_climate_find_stations by specifying that this tool provides location IDs for subsequent queries.

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

Usage Guidelines5/5

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

The description provides explicit usage scenarios: how to list US states (locationCategoryId=ST), cities with pagination (locationCategoryId=CITY, sort by name), and advice on navigating the lack of a name-search parameter. It also explains where to use the results (pass to noaa_climate_find_stations or noaa_climate_fetch_data).

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

noaa_climate_find_stationsFind NOAA Climate StationsA
Read-only
Inspect

Search for weather observation stations by location, bounding box, dataset, and data type. Returns station IDs, names, coordinates, elevation, and data coverage dates. Filter by locationId (e.g., "FIPS:37" for all NC stations), extent (lat/lon bounding box), datasetId, datatypeId, and date range. Station IDs returned here are used as stationId in noaa_climate_fetch_data. A station must have data for the dataset and date range you want — filter by datasetId and startDate/endDate to ensure compatibility. Common station ID formats: GHCND:USC00450974, COOP:010008.

ParametersJSON Schema
NameRequiredDescriptionDefault
limitNoMaximum number of results to return (1–1000). Defaults to 25.
extentNoBounding box filter as "minLat,minLon,maxLat,maxLon" (e.g., "47.5,-122.4,47.7,-122.1" for central Seattle). Optional.
offsetNoZero-based index of the first result to return for pagination. Defaults to 0.
endDateNoFilter to stations with data on or before this ISO date (YYYY-MM-DD). Optional.
datasetIdNoFilter to stations that have data in this dataset (e.g., "GHCND" for daily observations). Optional.
sortFieldNoSort results by this field. Optional.
sortOrderNoSort direction. Optional; defaults to asc.
startDateNoFilter to stations with data on or after this ISO date (YYYY-MM-DD). Optional.
datatypeIdNoFilter to stations that record these data types (e.g., ["TMAX", "TMIN", "PRCP"]). Optional.
locationIdNoFilter to stations within this location ID (e.g., "FIPS:37" for NC, "CITY:US530031" for Seattle). Obtain from noaa_climate_find_locations. Optional.
datacategoryIdNoFilter to stations with data in this category (e.g., "TEMP"). Optional.

Output Schema

ParametersJSON Schema
NameRequiredDescription
noticeNoGuidance when no stations matched — echoes applied filters and suggests how to broaden.
resultsYesMatching stations.
metadataNoPagination metadata. Present when the API returns it.
totalCountYesTotal number of matching stations before the page limit.
Behavior4/5

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

The description is consistent with annotations (readOnlyHint=true, openWorldHint=true). It adds practical behavioral context beyond annotations, such as the need to filter by dataset and date range to ensure stations have data, and the return fields. No contradictions.

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

Conciseness5/5

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

Extremely concise: two sentences in the first paragraph covering purpose and return values, followed by a second paragraph with practical usage advice and cross-tool relationships. No redundant information.

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

Completeness5/5

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

Given the tool's 11 optional parameters, 100% schema coverage, and an output schema, the description covers all necessary context: what the tool does, how to filter, what it returns, and how the results connect to other tools. It is complete for an agent to decide when and how to use it.

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

Parameters4/5

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

All 11 parameters are described in the schema (100% coverage), so baseline is 3. The description adds value by providing concrete examples (e.g., locationId 'FIPS:37' for NC, extent bounding box format for Seattle) and explaining their use in context, which goes beyond the schema's individual descriptions.

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 clearly states the tool searches for weather observation stations by multiple criteria (location, bounding box, dataset, data type) and lists returned fields. It distinguishes from siblings by explicitly mentioning the use of station IDs in noaa_climate_fetch_data and location IDs from noaa_climate_find_locations.

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?

Provides clear guidance on when to use the tool (to find stations) and important usage advice: filter by datasetId and startDate/endDate to ensure data compatibility. It implicitly directs to noaa_climate_fetch_data for data retrieval, though no explicit 'when not to use' is stated.

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

noaa_climate_get_stationGet NOAA Climate StationA
Read-only
Inspect

Fetch full metadata for a single weather station by its ID (e.g., "GHCND:USC00450974", "COOP:010008"). Returns name, coordinates, elevation, and the full date range for which data is available. Use when you have a station ID from noaa_climate_find_stations and want its complete details, or to verify a station before querying data.

ParametersJSON Schema
NameRequiredDescriptionDefault
stationIdYesStation ID to fetch (e.g., "GHCND:USC00450974", "COOP:010008"). Obtain from noaa_climate_find_stations.

Output Schema

ParametersJSON Schema
NameRequiredDescription
idYesStation ID.
nameYesStation name.
maxdateNoLatest date data is available at this station (YYYY-MM-DD). Omitted when not provided.
mindateNoEarliest date data is available at this station (YYYY-MM-DD). Omitted when not provided.
latitudeNoStation latitude in decimal degrees. Omitted when not provided by the API.
elevationNoStation elevation. Unit depends on elevationUnit. Omitted when not provided.
longitudeNoStation longitude in decimal degrees. Omitted when not provided by the API.
datacoverageNoFractional data coverage (0–1). Omitted when not provided by the API.
elevationUnitNoUnit for elevation (e.g., "Meters"). Omitted when not provided.
Behavior4/5

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

Annotations already declare readOnlyHint=true, so the description adds value by detailing return fields (name, coordinates, elevation, date range). No information contradicts annotations.

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

Conciseness5/5

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

Two concise sentences: purpose with example, then usage guidance. No unnecessary words, highly efficient.

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

Completeness5/5

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

Fully covers what the tool does, when to use it, and what it returns. Complete for a simple single-parameter tool with output schema.

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

Parameters4/5

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

Schema coverage is 100% with description for stationId. Description reinforces the example and adds context 'Obtain from noaa_climate_find_stations', enhancing understanding beyond 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?

States specific verb 'fetch', resource 'full metadata for a single weather station', and scope 'by ID'. Clearly distinguishes from sibling tool noaa_climate_find_stations which is for searching/finding stations.

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?

Explicitly states when to use: when you have a station ID from noaa_climate_find_stations or to verify a station before querying data. Implies alternative tool for searching.

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

noaa_climate_list_data_categoriesList NOAA Climate Data CategoriesA
Read-only
Inspect

List data categories that group related data types — Temperature, Precipitation, Wind, Pressure, Sunshine, Sky cover, Weather Type, and more. Use to discover what types of measurements are available before calling noaa_climate_list_data_types. Optionally filter by dataset, location, station, or date range. There are 42 categories in total.

ParametersJSON Schema
NameRequiredDescriptionDefault
limitNoMaximum number of results to return (1–1000). Defaults to 25.
offsetNoZero-based index of the first result to return for pagination. Defaults to 0.
endDateNoFilter to categories with data on or before this ISO date (YYYY-MM-DD). Optional.
datasetIdNoFilter to categories available in this dataset (e.g., "GHCND", "GSOM"). Optional.
sortFieldNoSort results by this field. Optional.
sortOrderNoSort direction. Optional; defaults to asc.
startDateNoFilter to categories with data on or after this ISO date (YYYY-MM-DD). Optional.
stationIdNoFilter to categories available at this station ID. Optional.
locationIdNoFilter to categories available at this location ID. Optional.

Output Schema

ParametersJSON Schema
NameRequiredDescription
noticeNoGuidance when no data categories matched — echoes applied filters and suggests how to broaden.
resultsYesMatching data categories.
metadataNoPagination metadata. Present when the API returns it.
totalCountYesTotal number of matching data categories before the page limit.
Behavior2/5

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

Annotations already declare readOnlyHint=true, so description carries low burden. It adds no behavioral details beyond annotations, such as pagination behavior, rate limits, or any side effects. The mention of '42 categories in total' is factual but not behavioral.

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

Conciseness5/5

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

Two sentences, no waste. First sentence states purpose and examples. Second sentence gives usage guidance and a key fact. Front-loaded and efficient.

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?

Given the simple read-only listing nature with no required parameters and an existing output schema, the description covers purpose, usage context, and available filters. It does not explain pagination (limit/offset) but those are documented in the schema. Slight gap could be mentioning total count is static, but overall sufficient.

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

Parameters3/5

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

Schema coverage is 100% (all 9 parameters described in schema). Description adds a summary of optional filters ('by dataset, location, station, or date range') but does not provide additional meaning beyond what the schema already captures. Baseline 3 is appropriate.

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?

Description clearly states the tool lists data categories, provides examples (Temperature, Precipitation, etc.), and explicitly distinguishes it from sibling noaa_climate_list_data_types by indicating it should be used before that tool.

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?

Explicitly says 'Use to discover what types of measurements are available before calling noaa_climate_list_data_types', giving a clear usage context. Lacks explicit 'when not to use' or alternatives beyond that one sibling, but the guidance is specific and helpful.

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

noaa_climate_list_datasetsList NOAA Climate DatasetsA
Read-only
Inspect

List available NOAA CDO datasets with their IDs, names, and temporal coverage. Returns all ~11 datasets by default (no required parameters). Optionally filter to datasets that contain a specific data type, cover a location or station, or overlap a date range. Common datasets: GHCND (daily observations, 1763–present), GSOM (monthly summaries), GSOY (annual summaries), NORMAL_DLY/MLY/ANN/HLY (1981–2010 climate normals). Use this first to discover available datasets before calling noaa_climate_fetch_data.

ParametersJSON Schema
NameRequiredDescriptionDefault
limitNoMaximum number of results to return (1–1000). Defaults to 25.
offsetNoZero-based index of the first result to return for pagination. Defaults to 0.
endDateNoFilter to datasets with data on or before this ISO date (YYYY-MM-DD). Optional.
sortFieldNoSort results by this field. Optional.
sortOrderNoSort direction. Optional; defaults to asc.
startDateNoFilter to datasets with data on or after this ISO date (YYYY-MM-DD). Optional.
stationIdNoFilter to datasets covering this station ID (e.g., "GHCND:USC00450974"). Optional.
datatypeIdNoFilter to datasets containing these data type IDs (e.g., ["TMAX", "PRCP"]). Optional.
locationIdNoFilter to datasets covering this location ID (e.g., "FIPS:37" for NC). Optional.

Output Schema

ParametersJSON Schema
NameRequiredDescription
noticeNoGuidance when no datasets matched — echoes applied filters and suggests how to broaden.
resultsYesMatching datasets.
metadataNoPagination metadata. Present when the API returns it.
totalCountYesTotal number of matching datasets before the page limit.
Behavior4/5

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

The description adds context beyond annotations: it specifies that by default all ~11 datasets are returned, that optional filters are available, and implies pagination via limit/offset. It does not contradict the readOnlyHint or openWorldHint annotations.

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

Conciseness5/5

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

The description is three sentences, front-loaded with purpose, followed by filter options and usage recommendation. Every sentence adds value, no wasted words.

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

Completeness5/5

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

Given the tool's complexity (9 optional parameters, output schema present), the description covers purpose, filters, common datasets, and usage order. It is complete for an agent to understand when and how to use it.

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

Parameters3/5

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

Schema coverage is 100%, so baseline is 3. The description adds some value by mentioning default for limit (25) and offset (0), and listing common datasets, but does not significantly enhance parameter understanding beyond the 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 clearly states it lists available NOAA CDO datasets with IDs, names, and temporal coverage. It mentions returning all ~11 datasets by default and optional filters, and distinguishes itself from sibling tools by advising to use it first before fetching data.

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 advises to use this tool first to discover datasets before calling noaa_climate_fetch_data, and mentions optional filters. It does not explicitly state when not to use it, but provides clear context for usage.

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

noaa_climate_list_data_typesList NOAA Climate Data TypesA
Read-only
Inspect

List available data types (measurement labels like TMAX, TMIN, PRCP, SNOW) for a given dataset or category. Pass a datasetId to see what is measured in that dataset, or a datacategoryId (e.g., "TEMP") to see all temperature-related types. Hundreds of types exist across all datasets. Use this before calling noaa_climate_fetch_data when the data type IDs are unknown. Common GHCND types: TMAX (max temperature), TMIN (min temperature), PRCP (precipitation), SNOW (snowfall), SNWD (snow depth), AWND (average wind speed).

ParametersJSON Schema
NameRequiredDescriptionDefault
limitNoMaximum number of results to return (1–1000). Defaults to 25.
offsetNoZero-based index of the first result to return for pagination. Defaults to 0.
endDateNoFilter to data types with data on or before this ISO date (YYYY-MM-DD). Optional.
datasetIdNoFilter to data types available in this dataset (e.g., "GHCND", "GSOM"). Optional.
sortFieldNoSort results by this field. Optional.
sortOrderNoSort direction. Optional; defaults to asc.
startDateNoFilter to data types with data on or after this ISO date (YYYY-MM-DD). Optional.
stationIdNoFilter to data types available at this station ID. Optional.
locationIdNoFilter to data types available at this location ID. Optional.
datacategoryIdNoFilter to data types in this category (e.g., "TEMP" for temperature types, "PRCP" for precipitation). Optional.

Output Schema

ParametersJSON Schema
NameRequiredDescription
noticeNoGuidance when no data types matched — echoes applied filters and suggests how to broaden.
resultsYesMatching data types.
metadataNoPagination metadata. Present when the API returns it.
totalCountYesTotal number of matching data types before the page limit.
Behavior4/5

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

Annotations declare readOnlyHint=true, and description aligns with a read operation. Adds useful context: 'Hundreds of types exist across all datasets' and lists common GHCND types. No contradictions. Does not detail pagination or rate limits, but schema parameters cover limit/offset.

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

Conciseness5/5

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

The description is concise (4-5 sentences), front-loaded with purpose and examples. Every sentence adds value with no redundancy.

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

Completeness5/5

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

Given the tool has 10 optional parameters and an output schema, the description covers the core use cases: filtering by dataset, category, dates, station, location. It mentions pagination implicitly via limit/offset. Sufficient for an AI agent to understand usage.

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

Parameters4/5

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

Schema coverage is 100% with descriptions for each parameter. Description adds value by explaining how to use datasetId and datacategoryId with examples (e.g., 'TEMP'), and lists common types. This provides context beyond the 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 clearly states it lists data types like TMAX, TMIN, PRCP, SNOW for a given dataset or category. It distinguishes from sibling tools by mentioning noaa_climate_fetch_data and providing context for when to use this tool.

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?

Explicitly says 'Use this before calling noaa_climate_fetch_data when the data type IDs are unknown.' Provides guidance on passing datasetId or datacategoryId. Lacks explicit when-not-to-use or alternatives, but the context is sufficient.

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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