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Search Reddit subreddits

redditSubredditSearch
Read-onlyIdempotent

Find a destination subreddit. Requires an owned active account and current provider availability. Follow nextCursor until done, keeping the same connection and search fields.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
wordYesSubreddit search text
cursorNonextCursor from the previous page of this exact tool and input
connectionIdYesOwned connectionId returned by accountList

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changed
    • 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": "redditSubredditSearch",
      -        "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": "redditSubredditSearch",
      -        "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": "redditSubredditSearch",
      +        "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": "redditSubredditSearch",
      +        "type": "string"
      +      }
      +    },
      +    "required": [
      +      "error",
      +      "ok",
      +      "toolName"
      +    ],
      +    "type": "object"
      +  }
      +]
  2. First observed

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, open-world, non-destructive. The description adds valuable behavior beyond them: the auth prerequisite (owned active account), transient provider availability, and the pagination contract (same connection and search fields). It does not disclose rate limits or result shape, keeping it below 5.

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 the purpose, then prerequisites, then pagination. Every sentence carries information with no filler, though it is terse rather than maximally 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 not be explained. The description covers the two things an agent most needs here: auth prerequisites and cursor pagination semantics. It is nearly complete, missing only explicit sibling routing.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, so all three parameters (word, cursor, connectionId) are already documented in the schema. The description references 'nextCursor' and 'search fields' but adds no syntax or format detail beyond what the schema provides, so the baseline of 3 applies.

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 states a clear verb+resource: 'Find a destination subreddit.' An agent can tell this searches subreddits, distinct from redditSubredditRequirementsGet. However, it does not explicitly name the sibling or contrast its scope, 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 gives prerequisites (owned active account, provider availability) and pagination guidance (follow nextCursor with the same connection and fields), which is real usage context. But it never says when to choose this over alternatives such as redditSubredditRequirementsGet, leaving tool selection to inference.

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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