How do I connect Chrono MCP Server to Claude?

Run `claude mcp add chrono-mcp -- npx -y @jmoak/chrono-mcp` in Claude Code, or add the same command and arguments under mcpServers in Cursor's mcp.json or Claude Desktop's claude_desktop_config.json, then restart the client. The blocks above are ready to paste.

Is Chrono MCP Server free?

The listed licence is MIT. Check the upstream terms for permitted use and commercial requirements; a public repository does not by itself mean the software is free or open source. Connected APIs and hosted services may have separate charges.

What can Chrono MCP Server do?

Chrono MCP Server documents 14 tools to the agent, including add, base_time, compare_time. The descriptions above come from project documentation. A live handshake does not test individual tool behavior.

Chrono MCP

Unclaimed

by JMoak

Time access and calculations mcp written in typescript available via npx.

Set up this server

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01 / Choose your client

02 / Before you connect

Authentication is not specified. Check the project instructions before connecting.

Install the runtime required by the project and make it available to your client.

Project instructionsEnvironment variable names (optional)

Use names from the project instructions, separated by commas. Enter names only, never secret values.

03 / Add the configuration

Source: generated from public install instructions

claude mcp add --transport stdio 'chrono-mcp' -- 'npx' '-y' '@jmoak/chrono-mcp'

Run in your terminal after replacing any placeholders.

04 / Check it in your client

Open your client’s MCP settings and confirm the server connects and lists its tools. A copied configuration does not confirm a working connection.

ai-agentsmcpmcp-servermodelcontextprotocolnpxtimetypescript

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14 of 14 tools

Documented tools (14)

From project documentation. A server handshake does not verify each tool’s description or behavior.

add

Add duration to a datetime

base_time

(optional): Base ISO datetime(s). String or array. Defaults to current time.

compare_time

(optional): Compare ISO datetime(s) for diff/durationbetween. String or array.

compare_time_timezone

(optional): Timezone for comparetime

diff

Calculate simple difference in various units

duration_between

Detailed duration breakdown between two times

expand

Expand an RFC 5545 RRULE or ISO 8601 repeating interval into occurrences

interaction_mode

(optional): autodetect singletomany manytosingle pairwise crossproduct aggregate. Defaults to autodetect.

operation

(required): Type of calculation

sort

Sort timestamps chronologically

stats

Statistical analysis of time series and durations (up to 100,000 timestamps per call)

subtract

Subtract duration from a datetime

timezone

(optional): Timezone for basetime

years

, months, days, hours, minutes, seconds (optional): Duration values

Tool change history

Compared across complete checks of the same configuration. Tools were listed, not invoked. Input-schema changes are not measured here.

No complete tool checks yet.

FAQ

Questions about Chrono MCP Server

How do I connect Chrono MCP Server to Claude?: Run `claude mcp add chrono-mcp -- npx -y @jmoak/chrono-mcp` in Claude Code, or add the same command and arguments under mcpServers in Cursor's mcp.json or Claude Desktop's claude_desktop_config.json, then restart the client. The blocks above are ready to paste.
Is Chrono MCP Server free?: The listed licence is MIT. Check the upstream terms for permitted use and commercial requirements; a public repository does not by itself mean the software is free or open source. Connected APIs and hosted services may have separate charges.
What can Chrono MCP Server do?: Chrono MCP Server documents 14 tools to the agent, including add, base_time, compare_time. The descriptions above come from project documentation. A live handshake does not test individual tool behavior.