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slack_list_reactions

Read-onlyIdempotent

Retrieve emoji reactions from Slack messages via your authorized connector account. Use the reaction data to monitor engagement, gather feedback, and inform responses.

Instructions

Slack connector operation list_reactions (platform tool slack.list_reactions).

Routes only through the exact project/account governed connector authority.

Args: arguments: JSON string of arguments for the connector operation. project_id: Authenticated Project UUID. project_ref: Exact project correlation reference. connector_account_ref: Project-bound connector account alias. idempotency_key: Stable business-action identity. effect: Required and must be read; Spring verifies it. approval_ref: Approved platform task UUID when resuming a write.

Input Schema

TableJSON Schema

Name	Required	Default
`effect`	Yes
`arguments`	No	{}
`project_id`	No
`project_ref`	No
`approval_ref`	No
`idempotency_key`	No
`connector_account_ref`	No

Output Schema

TableJSON Schema

Name	Required	Description	Default
`result`	Yes

Schema Changelog

Changes observed during successful MCP inspections.

Changed7 schema fields changedv0.1.1Sep 7, 2026

addedInput schema / properties / approval_ref

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null,
+  "title": "Approval Ref"
+}

addedInput schema / properties / connector_account_ref

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null,
+  "title": "Connector Account Ref"
+}

addedInput schema / properties / effect

Added value: +{
+  "const": "read",
+  "title": "Effect",
+  "type": "string"
+}

addedInput schema / properties / idempotency_key

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null,
+  "title": "Idempotency Key"
+}

addedInput schema / properties / project_id

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null,
+  "title": "Project Id"
+}

addedInput schema / properties / project_ref

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null,
+  "title": "Project Ref"
+}

addedInput schema / required
```
Added value: +[
+  "effect"
+]
```

First observedv0.1.0Jun 25, 2026

TDQS

C2.3/5.0

Behavior3/5

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

Annotations already declare readOnlyHint, openWorldHint, idempotentHint, and non-destructive behavior. The description adds modest context about connector-authority routing and that effect must be 'read' and is verified by Spring, which is useful but not extensive. There is no contradiction with the annotations.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness3/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The bulleted Args list is compact and scannable, and the routing constraint is stated early. However, the first line repeats the tool/platform name without adding semantic weight, and generic connector plumbing parameters crowd out any plain-language statement of what the operation actually does.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Even with an output schema and annotations, an agent cannot determine what arguments to place in the 'arguments' JSON string or what domain-level result list_reactions produces. The core Slack behavior is missing; the description only covers governance routing and effect verification.

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

Parameters2/5

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

Schema description coverage is 0%, so the parameter descriptions must compensate. They add labels like 'Authenticated Project UUID' and 'Stable business-action identity', but the primary parameter 'arguments' is only described as 'JSON string of arguments for the connector operation' with no indication of which Slack fields (e.g., channel, timestamp) list_reactions needs. The approval_ref note about resuming a write is also irrelevant for this read-only tool.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose2/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description merely restates the operation as 'Slack connector operation `list_reactions`' and gives the platform tool name; it never states that the tool lists reactions on a Slack message or what resource is acted on. This is essentially a tautology of the tool name and does not differentiate it from siblings like slack_add_reaction or slack_remove_reaction.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance is provided on when to use this tool versus alternatives. The only usage-like statement, 'Routes only through the exact project/account governed connector authority', is a routing constraint rather than a selection criterion or exclusion condition.

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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