Influence

List Discourse categories

discourseCategoryList

Read-onlyIdempotent

List forum categories where the connected user can create topics. Requires an owned active account and current provider availability. Follow nextCursor until done, keeping the same connection and search fields.

Input Schema

TableJSON Schema

Name	Required	Description	Default
`cursor`	No	nextCursor from the previous page of this exact tool and input
`connectionId`	Yes	Owned connectionId returned by accountList

Output Schema

TableJSON Schema

Name	Required	Description	Default
No arguments

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedOct 20, 2026

changedOutput schema / oneOf

Previous value: -[
-  {
-    "additionalProperties": false,
-    "properties": {
-      "ok": {
-        "const": true,
-        "type": "boolean"
-      },
-      "output": {
-        "additionalProperties": false,
-        "properties": {
-          "output": {
-            "additionalProperties": false,
-            "properties": {
-              "done": {
-                "$ref": "#/$defs/__schema0"
-              },
-              "items": {
-                "$ref": "#/$defs/__schema1"
-              },
-              "nextCursor": {
-                "$ref": "#/$defs/__schema3"
-              }
-            },
-            "required": [
-              "done",
-              "items"
-            ],
-            "type": "object"
-          }
-        },
-        "required": [
-          "output"
-        ],
-        "type": "object"
-      },
-      "toolName": {
-        "const": "discourseCategoryList",
-        "type": "string"
-      }
-    },
-    "required": [
-      "ok",
-      "output",
-      "toolName"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "error": {
-        "additionalProperties": false,
-        "properties": {
-          "code": {
-            "enum": [
-              "INVALID_INPUT",
-              "FORBIDDEN",
-              "NOT_FOUND",
-              "CONFLICT",
-              "FEATURE_DISABLED",
-              "CONFIRMATION_REQUIRED",
-              "CONFIRMATION_INVALID",
-              "UPSTREAM_FAILED",
-              "NEEDS_REVIEW",
-              "INTERNAL"
-            ],
-            "type": "string"
-          },
-          "message": {
-            "maxLength": 2048,
-            "minLength": 1,
-            "type": "string"
-          },
-          "retryable": {
-            "type": "boolean"
-          }
-        },
-        "required": [
-          "code",
-          "message",
-          "retryable"
-        ],
-        "type": "object"
-      },
-      "ok": {
-        "const": false,
-        "type": "boolean"
-      },
-      "toolName": {
-        "const": "discourseCategoryList",
-        "type": "string"
-      }
-    },
-    "required": [
-      "error",
-      "ok",
-      "toolName"
-    ],
-    "type": "object"
-  }
-]New value: +[
+  {
+    "additionalProperties": false,
+    "properties": {
+      "ok": {
+        "const": true,
+        "type": "boolean"
+      },
+      "output": {
+        "additionalProperties": false,
+        "properties": {
+          "output": {
+            "additionalProperties": false,
+            "properties": {
+              "done": {
+                "$ref": "#/$defs/__schema0"
+              },
+              "items": {
+                "$ref": "#/$defs/__schema1"
+              },
+              "nextCursor": {
+                "$ref": "#/$defs/__schema3"
+              }
+            },
+            "required": [
+              "done",
+              "items"
+            ],
+            "type": "object"
+          }
+        },
+        "required": [
+          "output"
+        ],
+        "type": "object"
+      },
+      "toolName": {
+        "const": "discourseCategoryList",
+        "type": "string"
+      }
+    },
+    "required": [
+      "ok",
+      "output",
+      "toolName"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "error": {
+        "additionalProperties": false,
+        "properties": {
+          "code": {
+            "enum": [
+              "AI_SCHEDULING_LIMIT_REACHED",
+              "AI_SCHEDULING_UNAVAILABLE",
+              "INVALID_INPUT",
+              "FORBIDDEN",
+              "NOT_FOUND",
+              "CONFLICT",
+              "FEATURE_DISABLED",
+              "CONFIRMATION_REQUIRED",
+              "CONFIRMATION_INVALID",
+              "UPSTREAM_FAILED",
+              "NEEDS_REVIEW",
+              "INTERNAL"
+            ],
+            "type": "string"
+          },
+          "message": {
+            "maxLength": 2048,
+            "minLength": 1,
+            "type": "string"
+          },
+          "retryable": {
+            "type": "boolean"
+          }
+        },
+        "required": [
+          "code",
+          "message",
+          "retryable"
+        ],
+        "type": "object"
+      },
+      "ok": {
+        "const": false,
+        "type": "boolean"
+      },
+      "toolName": {
+        "const": "discourseCategoryList",
+        "type": "string"
+      }
+    },
+    "required": [
+      "error",
+      "ok",
+      "toolName"
+    ],
+    "type": "object"
+  }
+]

First observedOct 11, 2026

TDQS

A4/5.0

Behavior4/5

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

Annotations already carry the safety profile (readOnlyHint, idempotentHint, destructiveHint=false), so the description earns credit for going beyond them: it discloses the account/provider preconditions and the pagination loop ('follow nextCursor until done'). It does not describe rate limits or what happens when provider availability is false, leaving a small gap.

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?

Three short sentences, front-loaded with purpose, then prerequisites, then pagination mechanics. Nothing is padded, but the trailing 'search fields' clause is an unearned ambiguity rather than useful content.

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; the description covers the two things the structured fields cannot: preconditions and the pagination contract. It is nearly complete, with only the unexplained 'search fields' reference and no note on failure when the account or provider is unavailable.

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 100% schema description coverage the baseline is 3, but the description adds real usage semantics for the cursor parameter: iterate until done while holding the connection constant. The reference to 'search fields' is vestigial though — no such field exists in this schema, which slightly muddies the pagination instruction.

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?

The description gives a specific verb and resource plus a meaningful scope filter: 'List forum categories where the connected user can create topics.' That distinguishes it in substance from discourseTagList and discourseTopicSearch, though it never names a sibling explicitly.

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?

It states applicability conditions clearly ('Requires an owned active account and current provider availability') and the create-topics scope implies when this tool is the right pick. It stops short of naming alternatives or stating when NOT to use it, so it falls short of a 5.

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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