myFlohmarkt Flea Market Catalog

Get flea market details

get_event

Read-onlyIdempotent

Get the full public details of one German flea market by its UUID, as returned in the id field of search_events or recently_updated_events: description text, street address, date and opening times, market type and topics, entrance fee and seller stand fee, stand sizes and table rental, whether sellers can still sign up, and the public my-flohmarkt.de event URL. Use it when a search hit is not enough to answer about price, address or what is sold. Unknown or non-public UUIDs return not_found.

Input Schema

Name	Required	Description	Default
`id`	Yes

Output Schema

Name	Required	Description	Default
`error`	No
`event`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed2 schema fields changedOct 21, 2026

addedOutput schema / properties / event / properties / primarySource

Added value: +{
+  "additionalProperties": false,
+  "properties": {
+    "name": {
+      "minLength": 1,
+      "type": "string"
+    },
+    "url": {
+      "anyOf": [
+        {
+          "format": "uri",
+          "type": "string"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    }
+  },
+  "required": [
+    "name",
+    "url"
+  ],
+  "type": "object"
+}

addedOutput schema / properties / event / properties / publicNotice

Added value: +{
+  "additionalProperties": false,
+  "properties": {
+    "kind": {
+      "const": "secondary_cancellation",
+      "type": "string"
+    },
+    "observedAt": {
+      "format": "date-time",
+      "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d:[0-5]\\d(?:\\.\\d+)?(?:Z))$",
+      "type": "string"
+    },
+    "sourceName": {
+      "minLength": 1,
+      "type": "string"
+    },
+    "sourceUrl": {
+      "format": "uri",
+      "type": "string"
+    }
+  },
+  "required": [
+    "kind",
+    "sourceName",
+    "sourceUrl",
+    "observedAt"
+  ],
+  "type": "object"
+}

Changed46 schema fields changedOct 13, 2026
- removedOutput schema / properties / event / properties / allowSellerSignup / anyOf
```
Removed value: -[
-  {
-    "type": "boolean"
-  },
-  {
-    "type": "null"
-  }
-]
```
- addedOutput schema / properties / event / properties / allowSellerSignup / type
```
Added value: +[
+  "boolean",
+  "null"
+]
```
- removedOutput schema / properties / event / properties / city / anyOf
```
Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
```
- addedOutput schema / properties / event / properties / city / type
```
Added value: +[
+  "string",
+  "null"
+]
```
- removedOutput schema / properties / event / properties / date / anyOf
```
Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
```
- addedOutput schema / properties / event / properties / date / type
```
Added value: +[
+  "string",
+  "null"
+]
```
- removedOutput schema / properties / event / properties / description / anyOf
```
Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
```
- addedOutput schema / properties / event / properties / description / type
```
Added value: +[
+  "string",
+  "null"
+]
```
- removedOutput schema / properties / event / properties / entranceFee / anyOf
```
Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
```
- addedOutput schema / properties / event / properties / entranceFee / type
```
Added value: +[
+  "string",
+  "null"
+]
```
- removedOutput schema / properties / event / properties / fee / anyOf
```
Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
```
- addedOutput schema / properties / event / properties / fee / type
```
Added value: +[
+  "string",
+  "null"
+]
```
- removedOutput schema / properties / event / properties / houseNumber / anyOf
```
Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
```
- addedOutput schema / properties / event / properties / houseNumber / type
```
Added value: +[
+  "string",
+  "null"
+]
```
- removedOutput schema / properties / event / properties / imageUrl / anyOf
```
Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
```
- addedOutput schema / properties / event / properties / imageUrl / type
```
Added value: +[
+  "string",
+  "null"
+]
```
- removedOutput schema / properties / event / properties / lat / anyOf
```
Removed value: -[
-  {
-    "type": "number"
-  },
-  {
-    "type": "null"
-  }
-]
```
- addedOutput schema / properties / event / properties / lat / type
```
Added value: +[
+  "number",
+  "null"
+]
```
- removedOutput schema / properties / event / properties / lng / anyOf
```
Removed value: -[
-  {
-    "type": "number"
-  },
-  {
-    "type": "null"
-  }
-]
```
- addedOutput schema / properties / event / properties / lng / type
```
Added value: +[
+  "number",
+  "null"
+]
```
- removedOutput schema / properties / event / properties / marketType / anyOf
```
Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
```
- addedOutput schema / properties / event / properties / marketType / type
```
Added value: +[
+  "string",
+  "null"
+]
```
- removedOutput schema / properties / event / properties / orgType / anyOf
```
Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
```
- addedOutput schema / properties / event / properties / orgType / type
```
Added value: +[
+  "string",
+  "null"
+]
```
- removedOutput schema / properties / event / properties / participants / anyOf
```
Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
```
- addedOutput schema / properties / event / properties / participants / type
```
Added value: +[
+  "string",
+  "null"
+]
```
- removedOutput schema / properties / event / properties / plz / anyOf
```
Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
```
- addedOutput schema / properties / event / properties / plz / type
```
Added value: +[
+  "string",
+  "null"
+]
```
- removedOutput schema / properties / event / properties / raumtyp / anyOf
```
Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
```
- addedOutput schema / properties / event / properties / raumtyp / type
```
Added value: +[
+  "string",
+  "null"
+]
```
- removedOutput schema / properties / event / properties / scope / anyOf
```
Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
```
- addedOutput schema / properties / event / properties / scope / type
```
Added value: +[
+  "string",
+  "null"
+]
```
- removedOutput schema / properties / event / properties / sellerFee / anyOf
```
Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
```
- addedOutput schema / properties / event / properties / sellerFee / type
```
Added value: +[
+  "string",
+  "null"
+]
```
- removedOutput schema / properties / event / properties / street / anyOf
```
Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
```
- addedOutput schema / properties / event / properties / street / type
```
Added value: +[
+  "string",
+  "null"
+]
```
- removedOutput schema / properties / event / properties / timeFrom / anyOf
```
Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
```
- addedOutput schema / properties / event / properties / timeFrom / type
```
Added value: +[
+  "string",
+  "null"
+]
```
- removedOutput schema / properties / event / properties / timeTo / anyOf
```
Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
```
- addedOutput schema / properties / event / properties / timeTo / type
```
Added value: +[
+  "string",
+  "null"
+]
```
- removedOutput schema / properties / event / properties / tischausleihe / anyOf
```
Removed value: -[
-  {
-    "type": "boolean"
-  },
-  {
-    "type": "null"
-  }
-]
```
- addedOutput schema / properties / event / properties / tischausleihe / type
```
Added value: +[
+  "boolean",
+  "null"
+]
```
- removedOutput schema / properties / event / properties / topic / anyOf
```
Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
```
- addedOutput schema / properties / event / properties / topic / type
```
Added value: +[
+  "string",
+  "null"
+]
```
- removedOutput schema / properties / event / properties / updatedAt / anyOf
```
Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
```
- addedOutput schema / properties / event / properties / updatedAt / type
```
Added value: +[
+  "string",
+  "null"
+]
```
First observedSep 5, 2026

TDQS

A4.4/5.0

Behavior4/5

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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so the safety profile is covered. The description adds genuine context beyond them: unknown or non-public UUIDs return a not_found result, which is useful failure-mode behavior an agent should anticipate. The enumerated return fields add some value but overlap with the existing output schema.

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 purpose, then usage, then failure behavior. The long clause enumerating every returned field is the weakest part, since an output schema already exists and re-listing fields is partly redundant.

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?

For a single-param lookup with an output schema and full annotations, the description covers what is fetched, when to use it, where the id comes from, and the not_found failure mode. Nothing an agent needs to call it correctly is missing.

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?

The single param has 0% schema description coverage, so the description must carry the meaning. It does: the id is identified as the UUID format and, more importantly, as the value returned in the id field of search_events or recently_updated_events, which is provenance the schema cannot convey.

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 verb and resource ('Get the full public details of one German flea market by its UUID') and enumerates the returned domain fields, so the agent knows exactly what this retrieves. It explicitly names the sibling tools whose id field feeds it, distinguishing it from search_events and recently_updated_events.

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 a clear selection rule: 'Use it when a search hit is not enough to answer about price, address or what is sold,' which tells the agent to reach for this after a search. It also names where the required id comes from. No explicit when-not condition is given, but the routing is unambiguous in practice.

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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