GribStream MCP
REMOTE · GRIBSTREAM.COM · SCANNED AUG 3
Hosted weather data MCP for discovery, validation, and OAuth-protected GribStream queries.
Available components
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score →
Endpoint Security63
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation not fully verified: no authorisation is required to call this server, and 10 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe. See how to fix → View diagnostics → Unverified
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- The HSTS (Strict-Transport-Security) header is present. View diagnostics → Pass
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability81
- 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 1671 tokens (~139/item across 12 items; 10 tools + 2 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management27
- Stability observed for 8 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
- Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
Add this component to your MCP client. Where a client-specific snippet is available, pick your client below and copy it straight into your config; otherwise use the connection detail shown.
remote · gribstream.com
claude mcp add --transport http com-gribstream-mcp https://gribstream.com/mcp
[mcp_servers.com-gribstream-mcp] url = "https://gribstream.com/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"com-gribstream-mcp": {
"type": "remote",
"url": "https://gribstream.com/mcp",
"enabled": true
}
}
} openclaw mcp add com-gribstream-mcp --url https://gribstream.com/mcp --transport streamable-http
mcp_servers:
com-gribstream-mcp:
url: "https://gribstream.com/mcp" {
"mcpServers": {
"com-gribstream-mcp": {
"type": "http",
"url": "https://gribstream.com/mcp"
}
}
} The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 2 Aug 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 20 to 23. That category is still filling its 30-day observation window: 6 days of observed history at the previous scan, 7 at this one. The score rises as the window fills, whether or not the server changes.
- 31 Jul 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 30 Jul 26 +1
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 29 Jul 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.
- 27 Jul 26 +1
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 26 Jul 26 66
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 3 Aug 2026 · Probed https://gribstream.com/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=gribstream.com | CN=YE2,O=Let's Encrypt,C=US | 27 Jun 2026 | 25 Sept 2026 | ECDSA 256 | ECDSA-SHA384 | 524e068ef9853ab48d3cdbb6098da9048d6 |
| SANs: *.gribstream.com, *.teatromagico.net, gribstream.com | ||||||
| CN=YE2,O=Let's Encrypt,C=US (CA) | CN=Root YE,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | ECDSA 384 | ECDSA-SHA384 | 4df3b15dd6c0784c507cd37b58e6f115 |
| CN=Root YE,O=ISRG,C=US (CA) | CN=ISRG Root X2,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | ECDSA-SHA384 | 872165fc34b6e5fba8add5b3705fb53a |
| CN=ISRG Root X2,O=Internet Security Research Group,C=US (CA) | CN=ISRG Root X1,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | SHA256-RSA | 6c8f1dc727c7117f7baf853ac980f9cd |
DNSSEC insecure
Validation of gribstream.com. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| com. | present | 19718 | 13 | Verified |
| gribstream.com. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
| Header | Value |
|---|---|
| strict-transport-security | max-age=31536000; includeSubDomains; preload |
| content-security-policy | frame-ancestors 'self' |
| x-content-type-options | nosniff |
| x-frame-options | SAMEORIGIN |
| referrer-policy | strict-origin-when-cross-origin |
| permissions-policy | accelerometer=(), autoplay=(), camera=(), display-capture=(), geolocation=(), gyroscope=(), magnetometer=(), microphone=(), midi=(), usb=() |
| www-authenticate | Bearer resource_metadata="https://gribstream.com/.well-known/oauth-protected-resource/mcp" |
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://gribstream.com/mcp | Verified | 200 | |
| http (plaintext) | http://gribstream.com/mcp | HTTPS enforced | 301 | https://gribstream.com/mcp |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability.
gribstream_build_runs_request Build runs API request ~231
NO AUTH / PUBLIC / READ-ONLY. Builds and validates a copy-pasteable authenticated /api/v2/{dataset}/runs HTTP request without sending it. This tool does not execute the request, query weather values, or return forecast data. Use gribstream_query_runs when the user asks for actual model-run forecast data or CSV/JSON/NDJSON data. Generated direct API requests include Accept-Encoding: gzip, and generated curl commands use --compressed so large responses can be transferred compressed when the client supports it. The request body must use exact selectors discovered from the catalog or shared-parameter tools, with coordinates in request.coordinates and selectors in request.variables.
| Name | Type | Req | Description |
|---|---|---|---|
| accept | string | — | Desired response format for the eventual HTTP request. |
| dataset | string | yes | Dataset code, for example gfs, ifsoper, nbm, hrrr, or urma. |
| request | object | yes | Runs request body. Use either timesList or forecastedFrom+forecastedUntil as UTC model run times. Coordinates must be in request.coordinates, and variable selectors must be in request.variables. |
| Name | Type | Req | Description |
|---|---|---|---|
| body | object | yes | GribStream API request body. |
| curl | string | yes | Copy-pasteable curl command. |
| endpoint | string | yes | GribStream endpoint. |
| errors | array | — | Validation errors. |
| headers | object | yes | HTTP headers for the generated request. Includes Accept-Encoding: gzip so large direct API responses can be transferred compressed when the client supports decompression. |
| method | string | yes | HTTP method for the generated request. |
| timestamp_semantics | string | yes | Endpoint-specific timestamp guidance. |
| url | string | yes | Public GribStream API URL. |
| valid | boolean | yes | Whether the request body passed local shape, selector, and expression checks. |
| warnings | array | — | Validation warnings. |
No examples provided.
gribstream_build_timeseries_request Build timeseries API request ~282
NO AUTH / PUBLIC / READ-ONLY. Builds and validates a copy-pasteable authenticated /api/v2/{dataset}/timeseries HTTP request without sending it. This tool does not execute the request, query weather values, or return forecast data. Use gribstream_query_timeseries when the user asks for actual weather values or CSV/JSON/NDJSON data. Generated direct API requests include Accept-Encoding: gzip, and generated curl commands use --compressed so large responses can be transferred compressed when the client supports it. Do not include request.asOf unless the user explicitly wants backtesting, time travel, or a historical model-run cutoff. The request body must use exact selectors discovered from the catalog or shared-parameter tools, with coordinates in request.coordinates and selectors in request.variables.
| Name | Type | Req | Description |
|---|---|---|---|
| accept | string | — | Desired response format for the eventual HTTP request. |
| dataset | string | yes | Dataset code, for example gfs, ifsoper, nbm, hrrr, or urma. |
| request | object | yes | Timeseries request body. Use either timesList or fromTime+untilTime as UTC valid times. Omit asOf unless the user explicitly asks for backtesting, time travel, what was known then, or a historical mo… |
| Name | Type | Req | Description |
|---|---|---|---|
| body | object | yes | GribStream API request body. |
| curl | string | yes | Copy-pasteable curl command. |
| endpoint | string | yes | GribStream endpoint. |
| errors | array | — | Validation errors. |
| headers | object | yes | HTTP headers for the generated request. Includes Accept-Encoding: gzip so large direct API responses can be transferred compressed when the client supports decompression. |
| method | string | yes | HTTP method for the generated request. |
| timestamp_semantics | string | yes | Endpoint-specific timestamp guidance. |
| url | string | yes | Public GribStream API URL. |
| valid | boolean | yes | Whether the request body passed local shape, selector, and expression checks. |
| warnings | array | — | Validation warnings. |
No examples provided.
gribstream_get_dataset Get dataset metadata ~83
NO AUTH / PUBLIC / READ-ONLY. Gets full public metadata for one dataset code, including archive coverage, cadence, tags, source links, and members. This tool does not query weather values and cannot return forecast data.
| Name | Type | Req | Description |
|---|---|---|---|
| dataset | string | yes | Dataset code, for example gfs, nbm, ifsoper, hrrr, urma. |
Structured output declared, but exposes no named fields.
No examples provided.
gribstream_get_expression_reference Get expression reference ~69
NO AUTH / PUBLIC / READ-ONLY. Gets the GribStream expression language reference, including github.com/expr-lang/expr syntax guidance, alias rules, examples, and the full exported func.* math function list. This tool does not query weather values and cannot return forecast data.
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
gribstream_get_parameter Get parameter selectors ~95
NO AUTH / PUBLIC / READ-ONLY. Gets detailed metadata and exact selector variations for one dataset parameter. Parameter codes are case-sensitive. This tool does not query weather values and cannot return forecast data.
| Name | Type | Req | Description |
|---|---|---|---|
| dataset | string | yes | Dataset code, for example ifsoper. |
| parameter | string | yes | Exact case-sensitive parameter short name, for example 100u, 2t, TMP, or APCP. |
Structured output declared, but exposes no named fields.
No examples provided.
gribstream_list_datasets List GribStream datasets ~157
NO AUTH / PUBLIC / READ-ONLY. Lists public GribStream datasets and metadata. This tool does not query weather values and cannot return forecast data. Supports catalog filters such as code, family, tag, and is_ensemble.
| Name | Type | Req | Description |
|---|---|---|---|
| code | — | — | Dataset code or list of dataset codes, for example gfs or ["gfs", "ifsoper"]. |
| family | string | — | Dataset family filter, for example gfs, ifs, nbm, hrrr, rap, rtma, urma. |
| is_ensemble | boolean | — | Filter to ensemble datasets when true, or deterministic datasets when false. |
| tag | — | — | Tag or list of tags. Multiple tags use AND semantics in the API. |
| Name | Type | Req | Description |
|---|---|---|---|
| datasets | array | yes | Public GribStream dataset summaries. |
No examples provided.
gribstream_list_parameters List dataset parameters ~65
NO AUTH / PUBLIC / READ-ONLY. Lists parameter summaries for one dataset. Use this before selecting exact case-sensitive parameter codes. This tool does not query weather values and cannot return forecast data.
| Name | Type | Req | Description |
|---|---|---|---|
| dataset | string | yes | Dataset code, for example ifsoper. |
| Name | Type | Req | Description |
|---|---|---|---|
| parameters | array | yes | Parameter summaries for one GribStream dataset. |
No examples provided.
gribstream_list_shared_parameters List shared weather parameters ~88
NO AUTH / PUBLIC / READ-ONLY. Lists normalized shared parameter presets that can map one logical signal across datasets. This tool does not query weather values and cannot return forecast data.
| Name | Type | Req | Description |
|---|---|---|---|
| dataset | — | — | Optional dataset code or list of dataset codes to filter supported shared parameters. |
| dataset_mode | string | — | Whether every listed dataset must support the preset or any one may support it. |
| Name | Type | Req | Description |
|---|---|---|---|
| shared_parameters | array | yes | Shared weather parameter summaries. |
No examples provided.
gribstream_resolve_shared_parameter Resolve shared weather parameter ~133
NO AUTH / PUBLIC / READ-ONLY. Resolves one shared parameter preset for a dataset, returning native variables and expressions to use in /timeseries or /runs request bodies. This tool does not execute the request, query weather values, or return forecast data.
| Name | Type | Req | Description |
|---|---|---|---|
| alias | string | — | Optional output alias for the resolved request. |
| dataset | string | — | Optional dataset code to resolve the shared parameter against. |
| parameter | string | yes | Shared parameter code, for example temperature_2m, wind_speed_10m, mean_sea_level_pressure, or wind_speed_500hpa. |
Structured output declared, but exposes no named fields.
No examples provided.
gribstream_validate_request Validate API request ~181
NO AUTH / PUBLIC / READ-ONLY. Validates the basic shape, exact selector tuples, and expression syntax of a proposed GribStream /timeseries or /runs request without sending it. This tool does not execute the request, query weather values, or return forecast data. Use this before returning any hand-edited curl or when changing a request from one dataset to another.
| Name | Type | Req | Description |
|---|---|---|---|
| dataset | string | yes | Dataset code, for example gfs, ifsoper, nbm, hrrr, or urma. |
| endpoint | string | yes | Endpoint to validate. |
| request | object | yes | Request body to validate. Omit asOf unless the user explicitly asks for backtesting, time travel, what was known then, or a historical model-run cutoff for /timeseries. Use request.coordinates for po… |
| Name | Type | Req | Description |
|---|---|---|---|
| dataset | string | yes | Dataset code that was validated. |
| endpoint | string | yes | GribStream endpoint. |
| errors | array | — | Validation errors. |
| timestamp_semantics | string | yes | Endpoint-specific timestamp guidance. |
| valid | boolean | yes | Whether the request body passed local shape, selector, and expression checks. |
| warnings | array | — | Validation warnings. |
No examples provided.