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ArtifactHub MCP Server

by hd-deman

ArtifactHub MCP Server

This is a Model Context Protocol (MCP) server for interacting with Helm charts on Artifacthub.

Usage

For VS-Code, click this auto-install-link.

Alternatively, use this MCP configuration:

{
	"servers": {
		"artifacthub-mcp": {
			"type": "stdio",
			"command": "docker",
			"args": ["run", "-i", "--rm", "ghcr.io/alexw00/artifacthub-mcp"]
		}
	}
}

Related MCP server: Docker Hub MCP Server

Available tools

  • helm-chart-info: get information about a Helm chart such as id and latest version

  • helm-chart-values: get the default values.yaml of a Helm chart

  • helm-chart-values-fuzzy-search: fuzzy search for a value in the default values.yaml of a Helm chart

  • helm-chart-template: get a template of a Helm chart by name

  • helm-chart-template-fuzzy-search: fuzzy search the names/contents of templates

Available Tools

5 tools
helm-chart-infoB

Get information about a Helm chart from Artifact Hub, including ID, latest version, and description

ParametersJSON Schema
NameRequiredDescriptionDefault
chartRepoYesThe Helm chart repository name
chartNameYesThe Helm chart name

TDQS

B3.3/5.0
Behavior2/5

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

With no annotations provided, the description carries full burden but only states what information is returned. It doesn't disclose behavioral aspects like authentication requirements, rate limits, error conditions, or whether this is a read-only operation (though implied by 'Get information').

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

Conciseness5/5

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

Single sentence with zero waste - every word contributes to understanding the tool's purpose. Front-loaded with the core action and resource, followed by specific details about what information is retrieved.

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

Completeness3/5

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

For a simple read operation with 2 parameters and 100% schema coverage, the description is minimally adequate but lacks behavioral context needed when annotations are absent. No output schema exists, so description doesn't explain return format beyond listing data types.

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 100%, so parameters are fully documented in the schema. The description adds no additional parameter context beyond implying these identify a specific chart. Baseline 3 is appropriate when schema does the heavy lifting.

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 action ('Get information') and resource ('Helm chart from Artifact Hub'), specifying what information is retrieved (ID, latest version, description). It distinguishes from siblings by focusing on basic metadata rather than templates or values, though it doesn't explicitly name alternatives.

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?

The description implies usage for retrieving basic chart metadata, but provides no explicit guidance on when to use this tool versus sibling tools like helm-chart-template or helm-chart-values. No prerequisites, exclusions, or comparison to alternatives are mentioned.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

helm-chart-templateC

Get the content of a template file from a Helm chart in Artifact Hub

ParametersJSON Schema
NameRequiredDescriptionDefault
chartRepoYesThe Helm chart repository name
chartNameYesThe Helm chart name
filenameYesExact filename (full path) to filter templates by (case-sensitive)
versionNoThe chart version (optional, defaults to latest)

TDQS

C2.9/5.0
Behavior2/5

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It states the tool retrieves template content but doesn't mention critical aspects like authentication requirements, rate limits, error handling (e.g., what happens if the file doesn't exist), or the format of the returned content. For a tool that interacts with an external service (Artifact Hub), this is a significant gap in transparency.

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

Conciseness5/5

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

The description is a single, efficient sentence that directly states the tool's purpose without unnecessary words. It's front-loaded with the core action ('Get the content'), making it easy to parse. There's no wasted verbiage or redundant information.

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 the complexity of interacting with Helm charts and Artifact Hub, the description is incomplete. With no annotations and no output schema, it fails to address key behavioral aspects (e.g., authentication, errors, return format) and doesn't differentiate from sibling tools. While the schema covers parameters well, the overall context for safe and effective use is lacking.

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?

The description doesn't add any parameter-specific information beyond what's already in the schema (which has 100% coverage). It implies the tool operates on Helm charts in Artifact Hub, but the schema already describes parameters like 'chartRepo', 'chartName', and 'filename' with clear descriptions. Since schema coverage is high, the baseline score of 3 is appropriate, as the description doesn't compensate with additional insights.

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 action ('Get the content') and resource ('a template file from a Helm chart in Artifact Hub'), making the purpose understandable. However, it doesn't explicitly differentiate from sibling tools like 'helm-chart-templates-fuzzy-search' (which likely searches templates rather than retrieving exact files) or 'helm-chart-info' (which provides chart metadata), leaving some ambiguity about when to choose this specific tool.

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 description provides no guidance on when to use this tool versus alternatives. It doesn't mention sibling tools like 'helm-chart-templates-fuzzy-search' (for searching templates) or 'helm-chart-values' (for retrieving values files), nor does it specify prerequisites or constraints beyond what's implied by the parameters. This lack of context could lead to incorrect tool selection.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

helm-chart-valuesB

Get the values.yaml file for a specific Helm chart from Artifact Hub

ParametersJSON Schema
NameRequiredDescriptionDefault
chartRepoYesThe Helm chart repository name
chartNameYesThe Helm chart name
versionNoThe chart version (optional, defaults to latest)

TDQS

B3.1/5.0
Behavior2/5

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It states the tool 'Get[s] the values.yaml file', implying a read-only operation, but does not clarify aspects like authentication requirements, rate limits, error handling, or the format of the returned values. This leaves significant gaps in understanding the tool's behavior beyond its basic purpose.

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

Conciseness5/5

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

The description is a single, direct sentence that efficiently conveys the tool's purpose without unnecessary words. It is front-loaded with the key action and resource, making it easy to parse quickly, and every part of the sentence contributes essential information.

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

Completeness3/5

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

Given the tool's moderate complexity (3 parameters, no output schema, no annotations), the description is minimally complete for a read operation. It specifies the resource and source (Artifact Hub), but lacks details on output format, error cases, or integration with siblings. This is adequate for basic use but leaves room for improvement in guiding effective tool selection and invocation.

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?

The input schema has 100% description coverage, clearly documenting all three parameters (chartRepo, chartName, version) with their types and optionality. The description does not add any additional semantic details beyond what the schema provides, such as examples or constraints, so it meets the baseline for adequate but not enhanced parameter understanding.

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 action ('Get') and the resource ('values.yaml file for a specific Helm chart from Artifact Hub'), making the purpose immediately understandable. However, it does not explicitly differentiate this tool from its sibling 'helm-chart-values-fuzzy-search', which likely serves a similar purpose with different functionality, leaving some ambiguity in sibling distinction.

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 description provides no guidance on when to use this tool versus its siblings, such as 'helm-chart-info' or 'helm-chart-values-fuzzy-search'. It lacks any context about prerequisites, alternatives, or specific scenarios where this tool is preferred, offering minimal usage direction.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

TDQS

A3.5/5.0
Disambiguation5/5

Each tool has a clearly distinct purpose focused on different aspects of Helm chart data retrieval. helm-chart-info provides metadata, helm-chart-template gets specific template files, helm-chart-templates-fuzzy-search searches template content, helm-chart-values retrieves values.yaml, and helm-chart-values-fuzzy-search searches within values.yaml. There is no overlap in functionality.

Naming Consistency5/5

All tools follow a consistent 'helm-chart-' prefix with descriptive suffixes (info, template, templates-fuzzy-search, values, values-fuzzy-search). The naming pattern is uniform throughout, using kebab-case consistently and clearly indicating each tool's specific function.

Tool Count5/5

With 5 tools, this server is well-scoped for its purpose of retrieving and searching Helm chart data from Artifact Hub. Each tool serves a distinct and necessary function without redundancy, making the count appropriate for the domain.

Completeness4/5

The toolset provides comprehensive coverage for retrieving and searching Helm chart data, including metadata, templates, and values. A minor gap exists in the inability to list or browse available charts (e.g., search or list charts by criteria), but the core operations for working with specific charts are well-covered.

Maintenance

ActivityInactive
ResponsivenessNo issues

Resources

Unclaimed servers have limited discoverability.

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