euroref — European government 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 DE 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

TableJSON Schema

Name	Required	Description	Default
`api_key`	No	API key

Output Schema

TableJSON 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 20, 2026

TDQS

A4.3/5.0

Behavior4/5

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

Annotations already cover readOnly/idempotent/non-destructive/openWorld, so safety is handled. The description adds genuinely new behavior: a $0.02 cost, x402 fallback payment flow, a free DE trial, and the warning that an unbound series can be 'silently retired' by a later gazette. This is strong added context beyond annotations.

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?

Front-loaded with the critical 'PAID ($0.02)' signal in the first token, which is the right priority. It is a single dense paragraph mixing purpose, pricing, auth and follow-up advice, so some promotional phrasing ('instant card checkout at /pricing') is not strictly necessary, but little is outright waste.

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 not be described, and annotations cover the safety profile. The description supplies the missing commercial and lifecycle context (cost, payment, follow-up binding). It is essentially complete for correct invocation, with only the when-to-call routing gap remaining.

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?

Only one parameter at 100% schema coverage, so the baseline is 3. The description adds meaning beyond the schema's bare 'API key': it explains the optional-vs-paid path ('Pass api_key if you have one... otherwise the response explains how to pay via x402'), which tells the agent what happens when the param is omitted.

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 a specific resource and an unusual scope: 'Snapshot of every series for every country in one call.' The phrase 'every series for every country in one call' distinguishes it from siblings like get_series/list_series/get_series_history without needing to open their schemas.

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?

Gives clear operating context (pass api_key or pay via x402) and explicitly names the follow-up alternatives get_changes and register_alert with their cost model. It stops short of stating when to prefer this tool over list_series/get_series for a first call, so routing is implied rather than spelled out.

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

All euroref — European government 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?