Hackle MCP Server (io.github.hackle-io/hackle-mcp)

Remote MCP server for the Hackle Admin API, focused on experiments, feature flags, remote config, and messaging. A deprecated local npm package exists, but new functionality is delivered via the remote server.

🛠️ Key Features

Remote MCP server for the Hackle Admin API
Experiments support
Feature flags support
Remote config support
Messaging support

🚀 Use Cases

Managing experiment variants
Reading and applying feature flags
Configuring remote settings
Working with messaging-related data and queries

⚠️ Limitations

The local npm package is deprecated and will no longer receive updates or new tools
For new tools and updates (including browser-ready access), use the remote MCP server

Hackle MCP Server

WARNING

⚠️ This local npm package is deprecated — use the remote MCP server

The Hackle MCP server is now available as a remote server, and this local npm package is deprecated. The remote server requires no npm or Node.js setup, updates automatically, works in the browser, and is where all new tools (such as messaging statistics and Kakao/Text message queries) ship.

This package will no longer receive updates or new tools. Existing installations keep working for now, but please migrate to the remote server.

👉 Migration guide: https://docs.hackle.io/external-link/model-context-protocol/migration

How to connect to the remote server

Add a custom connector in claude.ai (web) or Claude Desktop via Customization → Connectors → + Add Custom Connector, using the remote MCP server URL:
code
```
https://mcp.hackle.io/mcp
```
Enter your existing Hackle API key in the authentication screen — your API key remains unchanged.
Once connected, you can optionally remove the local server entry from your claude_desktop_config.json.

A Model Context Protocol server for Hackle API providing tools and resources for querying A/B Test data.

hackle-mcp MCP server

Features

Tools

Experiment List Tool

Name: experiment-list
Description: Fetches a paginated list of A/B test experiments with search functionality.
Parameters:
- pageNumber: Page number (default: 1)
- pageSize: Number of items per page (default: 100)
- searchKeyword: Search keyword (optional)

Experiment Detail Tool

Name: experiment-detail
Description: Retrieves detailed information for a specific A/B test experiment.
Parameters:
- experimentId: Experiment ID

In-App Message List Tool

Name: in-app-message-list
Description: Fetches a paginated list of in-app messages with search functionality.
Parameters:
- pageNumber: Page number (default: 1)
- pageSize: Number of items per page (default: 100)
- searchKeyword: Search keyword (optional)

In-App Message Detail Tool

Name: in-app-message-detail
Description: Retrieves detailed information for a specific in-app message.
Parameters:
- inAppMessageId: In-app message ID

Push Message List Tool

Name: push-message-list
Description: Fetches a paginated list of push messages with search functionality.
Parameters:
- pageNumber: Page number (default: 1)
- pageSize: Number of items per page (default: 100)
- searchKeyword: Search keyword (optional)

Push Message Detail Tool

Name: push-message-detail
Description: Retrieves detailed information for a specific push message.
Parameters:
- pushMessageId: Push message ID

Active User Series Tool

Name: active-user-series
Description: Retrieves time-series data of active users. Available in daily, weekly, and monthly units.
Parameters:
- unit: Time unit (DAY, WEEK, MONTH) (default: DAY)
- date: Date (optional)

Retention Series Tool

Name: retention-series
Description: Retrieves time-series data of user retention. Available in daily, weekly, and monthly units.
Parameters:
- unit: Time unit (DAY, WEEK, MONTH) (default: DAY)
- date: Date (optional)

Stickiness Series Tool

Name: stickiness-series
Description: Retrieves time-series data of user stickiness (return visit frequency). Available in weekly and monthly units.
Parameters:
- unit: Time unit (WEEK, MONTH) (default: WEEK)
- date: Date (optional)

Data Report List Tool

Name: data-report-list
Description: Retrieves all data report metadata.

Data Report Detail Tool

Name: data-report-detail
Description: Retrieves single data report's detail. It will provide analytics chart id and type inside data report. It is recommended to use Analytics Chart Detail Tool to get further information of each chart.
Parameters:
- dataReportId: Data report's id. This can be found in response of Data Report List Tool.

Analytics Chart List Tool

Name: analytics-chart-list
Description: Retrieves data analytics chart's metadata list.
Parameters:
- pageNumber: Page number (default: 1) (optional)
- pageSize: Number of items per page (default: 100) (optional)
- searchKeyword: Search keyword (optional) (optional)
- chartType: Chart types that Hackle provides: FUNNEL, DATA_INSIGHT, RETENTION, and USER_PATH. (optional)

Analytics Chart Detail Tool

Name: analytics-chart-detail
Description: Retrieves data analytics chart's detail. You can visualize the chart using this tool's result.
Parameters:
- chartId: Analytics chart's id. It can be found in the response of Data Report Detail Tool or Analytics Chart List Tool.
- chartType: Analytics chart's type(FUNNEL, DATA_INSIGHT, RETENTION, USER_PATH). It can be found in the response of Data Report Detail Tool or Analytics Chart List Tool.

Remote Config List Tool

Name: remote-config-list
Description: Retrieves remote config list.
Parameters:
- pageNumber: Page number (default: 1)
- pageSize: Number of items per page (default: 100)
- searchKeyword: Search keyword (optional)
- status: Status of remote config: ACTIVE, ARCHIVED (default: 'ACTIVE')

Remote Config Detail Tool

Name: remote-config-detail
Description: Retrieves remote config's detail.
Parameters:
- remoteConfigId: Remote config's id. You can get this information by using Remote Config List Tool.

Remote Config Creation Tool

Name: remote-config-create
Description: Creates an empty remote config. It is recommended to update an existing RC first if there is an associated RC with the one you want to create since the total number of RC is limited.
Parameters:
- body: Request body.
  - key: Remote config's name.
  - description: Remote config's description.
  - dataType: Type of remote config's value: STRING, JSON, NUMBER, BOOLEAN.
  - userIdentifierCriteria: User identifier criteria for targeting. You can use criteria provided by Hackle($deviceId, $userId) or your own criteria created at Hackle dashboard website. (default: '$deviceId')

Remote Config Content Update Tool

Name: remote-config-update
Description: Updates remote config's content.
Parameters:
- remoteConfigId: Remote config's id.
- body: Request body.
  - dataType: Type of remote config's value: STRING, JSON, NUMBER, BOOLEAN. The request will not be accepted if dataType and remote config values does not match.
  - remoteConfigDefaultValue: Default value of remote config. This value's type should match with dataType field.
  - conditionalValues: Array of conditional remote config's value with user group targeting.
    - ruleName: Name of targeting condition rule.
    - remoteConfigValue: Remote config's value. This value's type should match with dataType field.
    - target
      - conditions: Targeting rules. Users who The user he satisfies all conditions in this array will see this rule's remote config value.
        
        key
        
        type: Condition's type: HACKLE_PROPERTY, USER_PROPERTY, AB_TEST, FEATURE_FLAG, COHORT, SEGMENT.
        
        name: Property's name if type is HACKLE_PROPERTY or USER_PROPERTY. Experiment key if type is AB_TEST. Feature flag key if type is FEATURE_FLAG. You can put any non-empty string if type is COHORT or SEGMENT.
        
        match
        
        operator: Operators that will be used to match key and values of the condition.
        
        valueType: Type of targeting condition's value: NUMBER, STRING, BOOLEAN, VERSION.
        
        values: Values of targeting condition's key. Followings are some special cases: The values will be treated as names if you are using SEGMENT. Only strings 'A' and 'B' are allowed if type is AB_TEST. Only boolean values are accepted if type is FEATURE_FLAG. You should put cohort's id if type is COHORT.

Remote Config User Identifier Criteria Update Tool

Name: remote-config-update-user-identifier-criteria
Description: Updates remote config's user identifier criteria. The change will be applied to both production and development environment.
Parameters:
- remoteConfigId: Remote config's id.
- body: Request body.
  - userIdentifierCriteria: User identifier criteria for targeting. You can use criteria provided by Hackle($deviceId, $userId) or your own criteria created at Hackle dashboard website. (default: '$deviceId')

Remote Config Description Update Tool

Name: remote-config-update-description
Description: Updates remote config's description. The change will be applied to both production and development environment.
Parameters:
- remoteConfigId: Remote config's id.
- body: Request body.
  - description: Remote config's description.

Installation

Add this entry to your claude_desktop_config.json:

On Mac: ~/Library/Application Support/Claude/claude_desktop_config.json
On Windows: %APPDATA%\Claude\claude_desktop_config.json
On Linux: ~/.config/Claude/claude_desktop_config.json

json

{
  "mcpServers": {
    "hackle-mcp": {
      "command": "npx",
      "args": ["-y", "@hackle-io/hackle-mcp@latest"],
      "env": {
        "API_KEY": "YOUR_API_KEY"
      }
    }
  }
}

Restart Claude if running

Getting Your API Key

To use the Hackle MCP Server, you will need an API key. To obtain your API key:

Contact the Hackle team directly through Hackle Slack Community
Request an API key for MCP Server access
The Hackle team will provide you with a unique API key

Important: Never share your API key or commit it to public repositories. Treat your API key as a sensitive credential.

License

MIT

Hackle