Influence

List Mattermost channels

mattermostChannelList

Read-onlyIdempotent

List joined channels available to this publishing account. 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": "mattermostChannelList",
-        "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": "mattermostChannelList",
-        "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": "mattermostChannelList",
+        "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": "mattermostChannelList",
+        "type": "string"
+      }
+    },
+    "required": [
+      "error",
+      "ok",
+      "toolName"
+    ],
+    "type": "object"
+  }
+]

First observedOct 11, 2026

TDQS

A3.8/5.0

Behavior4/5

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

Annotations already declare readOnly, idempotent, non-destructive, and closed-world, so the safety profile is covered. The description adds genuinely useful operational context beyond that: preconditions (owned active account, provider availability) and an explicit pagination loop ("Follow nextCursor until done, keeping the same connection and search fields").

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 what the tool returns before the prerequisites and pagination instruction. No filler, though the trailing "search fields" clause introduces a term the schema doesn't define.

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?

With an output schema present, return values need not be described, and the description covers the key gaps an agent has: account preconditions and how to terminate pagination. Complete enough to call correctly, missing only sibling routing guidance.

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?

Schema coverage is 100%, so baseline is 3. The description adds meaning by telling the agent to reuse the same connection and input fields across pages, reinforcing the cursor contract beyond the schema's per-field note. The mention of "search fields" is slightly confusing since no search parameter exists in the schema.

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?

Specific verb+resource ("List joined channels") with a clear scope qualifier ("available to this publishing account"), so an agent can distinguish it from siblings like slackChannelList or discordChannelList. It never explicitly contrasts itself with those siblings, so it stops short of a 5.

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 states prerequisites ("Requires an owned active account and current provider availability") and a pagination procedure, which implies when the tool is callable. However it never names an alternative provider's channel list or explains when to prefer this over slackChannelList/teamsChannelList, so usage is only partially guided.

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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