io.github.cyanheads/nasa-power-mcp-server

io.github.cyanheads/nasa-power-mcp-servercyanheadsstreamable-httpv0.3.0Scanned 59 minutes ago

Query NASA POWER solar, wind, building, and agroclimatology data.

8 tools: 1 change things and 7 only read.

Reads private data · 2
Reads text others write · 5
Can send data out · 0
1 finding

Anlyon alternative

1 of these tools change something. Run those as governed actions.

Declare what an action changes, and Anlyon puts it under a shared limit, binds every approval to the exact request, and grades the outcome. It works on any HTTPS API you can describe as an action.

Anlyon does not run, proxy or govern this MCP server. A tool your own code calls directly is not routed through Anlyon and is not governed by it.

Import an OpenAPI spec →

Tools

Grouped by what each tool does, most consequential first. Open one for its reasons and full description; descriptions are the publisher's own words.

8 tools

Changes things 1Creates or changes something that can be changed back.Claude Code: ask

nasa_power_dataframe_queryRun one read-only SELECT over tables in an explicitly supplied canvas_id.Reads private data1 finding
Why it is in this group
- The name "nasa_power_dataframe_query" says "query": a word for reading.
- The description's first verb is "run": a word for a change.
- The input takes a statement or command to run (input.sql), which can change anything it can reach.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
What it can reach
- private-dataThe description's first sentence says "table": it reads databases.
- private-dataThe name says "query" and the input takes a statement (input.sql): it reads databases.
Findings
- Warn
  The server marks "nasa_power_dataframe_query" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
  Matched text
  annotations: {"readOnlyHint":true,"idempotentHint":true,"openWorldHint":false}; The name "nasa_power_dataframe_query" says "query": a word for reading.
  What this check looks for
Description, as the server wrote it
Run one read-only SELECT over tables in an explicitly supplied canvas_id. Inspect names and units with nasa_power_dataframe_describe. External files, imports, writes and system catalogs are refused. Returns at most 1,000 rows and 40,000 JSON characters; truncated rowCount counts only materialized rows.
Annotations the server declares
- readOnlyHint: true
- idempotentHint: true
- openWorldHint: false

Only reads 7Looks things up and changes nothing.Show 7 read-only tools

nasa_power_compare_locationsCompare 2–10 labeled coordinates with a shared parameter selection and window; climatology is the default resolution.Reads text others writeNo findings
Why it is in this group
- The name "nasa_power_compare_locations" says "compare": a word for reading.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Description, as the server wrote it
Compare 2–10 labeled coordinates with a shared parameter selection and window; climatology is the default resolution. Duplicate labels retain separate input-position identities. Returns per-site provenance and valid-only annual/seasonal summaries; operational site failures preserve successes. Optional numeric sort uses observation means, monthly annual records or climatology ANN, with nulls last and stable ties; differing or unknown units cannot sort. Oversized observations and summaries stage completely; summaryDatasets handles and summaryIndex preserve complete ordered summary arrays.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true
nasa_power_dataframe_describeInspect table schemas, physical units and original scientific provenance within a canvas_id returned by a producing POWER tool.Reads private dataNo findings
Why it is in this group
- The name "nasa_power_dataframe_describe" says "describe": a word for reading.
What it can reach
- private-dataThe description's first sentence says "inspect" and "table": it reads databases.
- private-dataThe input names a table (input.table), and the tool reads: it reads databases.
Description, as the server wrote it
Inspect table schemas, physical units and original scientific provenance within a canvas_id returned by a producing POWER tool. Tokens are process-local capabilities; only the supplied canvas is inspected.
Annotations the server declares
- readOnlyHint: true
- idempotentHint: true
- openWorldHint: false
nasa_power_get_climatologyRetrieve complete monthly and annual climatology at latitude/longitude.Reads text others writeNo findings
Why it is in this group
- The name "nasa_power_get_climatology" says "get": a word for reading.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Description, as the server wrote it
Retrieve complete monthly and annual climatology at latitude/longitude. Optionally supply both startYear and endYear; omitted years use the source product range. Use nasa_power_list_reference for presets and tilted solar aliases. Small profiles remain inline; larger profiles return a complete table handle and bounded preview, preserving orientation text. Supply canvas_id to reuse a returned workspace.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true
nasa_power_get_regionRetrieve one parameter over ordered latitude/longitude bounds spanning 2–10 degrees per axis, at daily, monthly or climatology resolution.Reads text others writeNo findings
Why it is in this group
- The name "nasa_power_get_region" says "get": a word for reading.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Description, as the server wrote it
Retrieve one parameter over ordered latitude/longitude bounds spanning 2–10 degrees per axis, at daily, monthly or climatology resolution. Regional climatology uses the precomputed source period and accepts no year fields; use nasa_power_get_climatology for custom years at a point. Split antimeridian regions into separate calls. Returns cell identities and separate per-period equal-weight cell statistics, not area-weighted estimates. Oversized observations and summaries stage completely with previews, exact counts and SQL handles; query summaryDataset in summaryIndex order.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true
nasa_power_get_timeseriesRetrieve complete hourly, daily or monthly observations at latitude/longitude.Reads text others writeNo findings
Why it is in this group
- The name "nasa_power_get_timeseries" says "get": a word for reading.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Description, as the server wrote it
Retrieve complete hourly, daily or monthly observations at latitude/longitude. Hourly and daily require startDate/endDate; monthly requires startYear/endYear. Use nasa_power_search_parameters for codes and nasa_power_list_reference for presets. Large results return a full-table canvas handle and preview.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true
nasa_power_list_referenceExplain exact presets, communities and units, source coverage, missing values, wind corrections or current dataframe availability.No findings
Why it is in this group
- The name "nasa_power_list_reference" says "list": a word for reading.
Description, as the server wrote it
Explain exact presets, communities and units, source coverage, missing values, wind corrections or current dataframe availability. Choose topic presets before a producing call, or coverage when revising a date window. Reference entries include public documentation and verification dates.
Annotations the server declares
- readOnlyHint: true
- idempotentHint: true
- openWorldHint: false
nasa_power_search_parametersFind parameter codes supported by a community and temporalResolution.Reads text others writeNo findings
Why it is in this group
- The name "nasa_power_search_parameters" says "search": a word for reading.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Description, as the server wrote it
Find parameter codes supported by a community and temporalResolution. Every whitespace-separated filter token must match code, name or definition, ignoring case. Filtering covers the complete dictionary before sorted pagination. Blank filter browses all codes; pass returned codes to a producing tool.
Annotations the server declares
- readOnlyHint: true
- idempotentHint: true
- openWorldHint: true

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Exfil surface

Which tools read private data, which read text someone else can write, and which can send data out. One of each is a path a prompt injection can use.

No private-data, untrusted-input, outbound path in this server alone: no tool is tagged outbound.

Reads private data2: Reads files, mail, messages, databases, secrets, calendars or repositories.; nasa_power_dataframe_describe
nasa_power_dataframe_query
Reads text others write5: Brings in text someone else can write: web pages, inbound email, messages, issues and comments.; nasa_power_compare_locations
nasa_power_get_climatology
nasa_power_get_region
nasa_power_get_timeseries
nasa_power_search_parameters
Can send data out0: Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL.

Other servers in the same agent add their own tools to these paths. Audit your whole setup to see them together.

Findings

Matches of fixed checks, with the text they matched.

1 warn

Warnnasa_power_dataframe_query
The server marks "nasa_power_dataframe_query" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
Matched text
annotations: {"readOnlyHint":true,"idempotentHint":true,"openWorldHint":false}; The name "nasa_power_dataframe_query" says "query": a word for reading.
What this check looks for

History

Changes to its tool definitions and to its remote endpoint, newest first.

No change seen yet. Its tools are rescanned every day, and a remote endpoint is looked at once a week.

All changes to this server

Install

Pinned to version 0.3.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http nasa-power https://nasa-power.caseyjhand.com/mcp

claude mcp add --transport http nasa-power https://nasa-power.caseyjhand.com/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change or a way out, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json

{
  "permissions": {
    "allow": [
      "mcp__nasa-power__nasa_power_get_timeseries",
      "mcp__nasa-power__nasa_power_get_climatology",
      "mcp__nasa-power__nasa_power_get_region",
      "mcp__nasa-power__nasa_power_compare_locations",
      "mcp__nasa-power__nasa_power_search_parameters",
      "mcp__nasa-power__nasa_power_list_reference",
      "mcp__nasa-power__nasa_power_dataframe_describe"
    ],
    "ask": [
      "mcp__nasa-power__nasa_power_dataframe_query"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. A read that can send data out (it takes a URL, say) asks first too. It assumes the server is installed as nasa-power. Review it before you use it.

Capability tags behind 7 rules

mcp__nasa-power__nasa_power_get_timeseries untrusted-input
mcp__nasa-power__nasa_power_get_climatology untrusted-input
mcp__nasa-power__nasa_power_get_region untrusted-input
mcp__nasa-power__nasa_power_compare_locations untrusted-input
mcp__nasa-power__nasa_power_search_parameters untrusted-input
mcp__nasa-power__nasa_power_dataframe_describe private-data
mcp__nasa-power__nasa_power_dataframe_query private-data

Keep the decision: fail CI when the tools change, follow every change, or show a badge.

Pin in CI

Fail a build when the tools you reviewed are not the tools the server serves today.

curl -s "https://anlyon.dev/api/v1/servers/io.github.cyanheads/nasa-power-mcp-server/verify?hash=f56c536afe6182b84d24b2688d61337ec20b1472118bce0f90fd9a3caeb0b976" | jq -e '.changed == false'

Pinned hash f56c536afe61, from Oct 24, 2026, 22:18 UTC.

Watch

Get told when its tools change: a new tool, a new description, a new class.

https://anlyon.dev/servers/io.github.cyanheads/nasa-power-mcp-server/changes.xml

An Atom feed. Works in any feed reader or Slack's RSS app.

Badge

[![anlyon.dev](https://anlyon.dev/badge/io.github.cyanheads/nasa-power-mcp-server.svg)](https://anlyon.dev/servers/io.github.cyanheads/nasa-power-mcp-server)

Source: MCP Registry · repository. Synced Oct 24, 2026, 22:17 UTC.