reference-data

get_snapshot

Read-onlyIdempotent

PAID ($0.02). Snapshot of every series for every country in one call. Pass api_key if you have one (instant card checkout at /pricing); otherwise the response explains how to pay via x402. Every AE series is free to try. After a 200, bind get_changes (free poll) or register_alert (HMAC push; Register: $0 · Delivery after trial: $0.05) on this series so a later gazette does not silently retire the value.

Input Schema

Name	Required	Description	Default
`api_key`	No	API key

Output Schema

Name	Required	Description
`error`	No	Present on a free refusal or error; no charge
`result`	No	One entry per country; every series value carries confidence_label, coverage_label and label_basis
`countries`	No
`no_charge`	No
`price_usd`	No
`disclaimer`	No
`how_to_pay`	No
`bind_series`	No
`explanation`	No
`x_next_bind`	No
`http_endpoint`	No
`payment_required`	No	true when the call needs payment; how_to_pay explains x402 or card

Schema Changelog

Changes observed during successful MCP inspections.

Changed4 schema fields changedOct 17, 2026
- removedOutput schema / properties / result / items / properties / series / items / properties / label_basis / properties / source_type / anyOf
```
Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
```
- addedOutput schema / properties / result / items / properties / series / items / properties / label_basis / properties / source_type / type
```
Added value: +[
+  "string",
+  "null"
+]
```
- removedOutput schema / properties / result / items / properties / series / items / properties / label_basis / properties / verification_age_days / anyOf
```
Removed value: -[
-  {
-    "type": "number"
-  },
-  {
-    "type": "null"
-  }
-]
```
- addedOutput schema / properties / result / items / properties / series / items / properties / label_basis / properties / verification_age_days / type
```
Added value: +[
+  "number",
+  "null"
+]
```

Changed1 schema field changedOct 13, 2026

addedOutput schema / properties / result

Added value: +{
+  "description": "One entry per country; every series value carries confidence_label, coverage_label and label_basis",
+  "items": {
+    "additionalProperties": {},
+    "properties": {
+      "country": {
+        "type": "string"
+      },
+      "series": {
+        "items": {
+          "additionalProperties": {},
+          "properties": {
+            "confidence": {},
+            "confidence_label": {
+              "description": "Evidence verdict derived from source type, verification age and the stale flag (answers: the weakest series read). Rules at /label-rules",
+              "enum": [
+                "high",
+                "medium",
+                "low"
+              ],
+              "type": "string"
+            },
+            "country": {
+              "type": "string"
+            },
+            "coverage_label": {
+              "description": "How much of the question is covered: ready = complete; partial = held with a disclosed limitation or default; gap = no number served. Rules at /label-rules",
+              "enum": [
+                "ready",
+                "partial",
+                "gap"
+              ],
+              "type": "string"
+            },
+            "effective_from": {},
+            "label_basis": {
+              "additionalProperties": {},
+              "description": "Inputs and the rule ids that produced the two labels",
+              "properties": {
+                "confidence_reasons": {
+                  "items": {
+                    "type": "string"
+                  },
+                  "type": "array"
+                },
+                "coverage_reasons": {
+                  "items": {
+                    "type": "string"
+                  },
+                  "type": "array"
+                },
+                "inputs": {
+                  "items": {},
+                  "type": "array"
+                },
+                "rules": {
+                  "type": "string"
+                },
+                "rules_version": {
+                  "type": "string"
+                },
+                "source_type": {
+                  "anyOf": [
+                    {
+                      "type": "string"
+                    },
+                    {
+                      "type": "null"
+                    }
+                  ]
+                },
+                "stale": {
+                  "type": "boolean"
+                },
+                "verification_age_days": {
+                  "anyOf": [
+                    {
+                      "type": "number"
+                    },
+                    {
+                      "type": "null"
+                    }
+                  ]
+                }
+              },
+              "type": "object"
+            },
+            "last_confirmed": {},
+            "notes": {},
+            "series": {
+              "type": "string"
+            },
+            "source": {},
+            "stale": {
+              "type": "boolean"
+            },
+            "unit": {},
+            "value": {}
+          },
+          "type": "object"
+        },
+        "type": "array"
+      }
+    },
+    "type": "object"
+  },
+  "type": "array"
+}

Changed1 schema field changedOct 12, 2026

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "additionalProperties": {},
+  "description": "Every series for every country of this brand",
+  "properties": {
+    "bind_series": {},
+    "countries": {},
+    "disclaimer": {},
+    "error": {
+      "description": "Present on a free refusal or error; no charge"
+    },
+    "explanation": {},
+    "how_to_pay": {
+      "items": {
+        "type": "string"
+      },
+      "type": "array"
+    },
+    "http_endpoint": {
+      "type": "string"
+    },
+    "no_charge": {
+      "type": "boolean"
+    },
+    "payment_required": {
+      "description": "true when the call needs payment; how_to_pay explains x402 or card",
+      "type": "boolean"
+    },
+    "price_usd": {
+      "type": "number"
+    },
+    "x_next_bind": {}
+  },
+  "type": "object"
+}

First observedJul 24, 2026

TDQS

A3.7/5.0

Behavior4/5

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

Annotations already declare readOnly, idempotent, non-destructive and openWorld, so the bar is lower. The description adds genuinely valuable behavior beyond that: it is a PAID call ($0.02), auth is optional via api_key with an x402 fallback, AE series are free to try, and a later gazette can silently retire values. That is substantive context the annotations cannot convey.

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

Conciseness3/5

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

Front-loading 'PAID ($0.02)' is effective, but the body is dense with parenthetical pricing fragments ('Register: $0 · Delivery after trial: $0.05') that are about a different tool and compete with the core message. Appropriately sized overall, yet cluttered and not cleanly structured.

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?

An output schema exists, so return values need no explanation, and annotations carry the safety profile. The description covers payment, auth, trial behavior, and the recommended follow-up chain, leaving little an agent needs missing before invoking 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?

With one parameter at 100% schema coverage the baseline is 3, but the description goes further by clarifying api_key is optional ('if you have one') and describing what happens when it is absent (x402 payment explanation in the response). This adds real meaning beyond the bare 'API key' schema string.

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

Purpose4/5

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

States a specific verb and resource with scope: 'Snapshot of every series for every country in one call.' The 'every series / every country in one call' phrasing implicitly separates it from single-series siblings like get_series and get_series_history, though those siblings are never named. Purpose is clear but sibling differentiation is left to inference.

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

Usage Guidelines3/5

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

It explains what to do AFTER a 200 (bind get_changes or register_alert) and how to handle auth/payment, but never states when to choose get_snapshot over get_series, list_series, or get_series_history. Usage is implied through the chained workflow rather than an explicit 'use this when' condition.

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

All reference-data tools Inspect

Try in Browser

One endpoint for every MCP toolRayrun runs every MCP server behind one URL and holds the credentials. Each call is decided per client, tool, and argument, then recorded.ray.runAd

Glama MCP Gateway

Add one secure layer between your agents and this server.

Resources

Need Help?