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argocd-mcp

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sync_application

Sync an ArgoCD application to its desired state. Supports dry run, prune, and syncing to a specific revision.

Instructions

sync_application syncs application. Specify applicationNamespace if the application is in a non-default namespace to avoid permission errors.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
applicationNameYes
applicationNamespaceNoThe namespace where the application is located. Required if application is not in the default namespace.
dryRunNoPerform a dry run sync without applying changes
pruneNoRemove resources that are no longer defined in the source
revisionNoSync to a specific revision instead of the latest
syncOptionsNoAdditional sync options (e.g., ["CreateNamespace=true", "PrunePropagationPolicy=foreground"])

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed5 schema fields changedv1.0.0
    • addedInput schema / properties / applicationNamespace
      Added value: +{
+  "description": "The namespace where the application is located. Required if application is not in the default namespace.",
+  "minLength": 1,
+  "type": "string"
+}
    • addedInput schema / properties / dryRun
      Added value: +{
+  "description": "Perform a dry run sync without applying changes",
+  "type": "boolean"
+}
    • addedInput schema / properties / prune
      Added value: +{
+  "description": "Remove resources that are no longer defined in the source",
+  "type": "boolean"
+}
    • addedInput schema / properties / revision
      Added value: +{
+  "description": "Sync to a specific revision instead of the latest",
+  "type": "string"
+}
    • addedInput schema / properties / syncOptions
      Added value: +{
+  "description": "Additional sync options (e.g., [\"CreateNamespace=true\", \"PrunePropagationPolicy=foreground\"])",
+  "items": {
+    "type": "string"
+  },
+  "type": "array"
+}
  2. First observed

TDQS

C2.8/5.0
Behavior2/5

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

No annotations are provided, and the description does not disclose any behavioral traits (e.g., whether the operation is destructive, permission requirements, side effects). The description is far too brief to compensate for the lack of 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 description is short (two sentences) with no wasted words, but it is too brief given the complexity of the tool (6 parameters, sync operation). It could be more informative without sacrificing conciseness.

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?

Given no annotations, no output schema, and a moderate parameter count, the description is incomplete. It fails to explain what 'sync' entails, return behavior, errors, or any important context needed for correct use.

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 description coverage is high (83%), so the baseline is 3. The description adds some context for 'applicationNamespace' (permission errors), but adds no meaning beyond the schema for other parameters.

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 clearly states the verb 'syncs' and the resource 'application'. It communicates the core function, but does not differentiate from sibling tools like 'update_application' or 'create_application', which could cause confusion.

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?

The only usage guidance is about specifying 'applicationNamespace' for non-default namespaces to avoid errors. No guidance on when to use this tool versus alternatives, nor prerequisites or context.

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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