Chron
@SirinivasK
About Chron
AI tools show when you sent a message. Chron logs when the AI responded too — and keeps a permanent, queryable record of every exchange across every tool you use. Works with Claude Desktop, Claude Code, Cursor, Windsurf, and any MCP-compatible AI tool. Every exchange is stored wi
Config
Add this server to your MCP-compatible client using the configuration below.
{
"mcpServers": {
"chron": {
"command": "npx",
"args": [
"-y",
"chron-mcp"
]
}
}
}Tools
No tools detected
We auto-extract tools from the README. The maintainer can list them under a ## Tools heading to populate this section.
Overview
What is Chron?
Chron is an MCP server that provides a timestamped audit trail for every AI conversation. It logs each exchange with precise local datetime (including timezone offset) to a local SQLite file you own. Works with Claude Desktop, Claude Code, Cursor, Windsurf, and any MCP-compatible AI tool.
How to use Chron?
Add the server to your AI tool’s MCP configuration by setting command to npx and args to ["-y", "chron-mcp"]. First run automatically creates ~/.chron/chron.db. For Claude Code, additionally install the companion skill hook to enable automatic session logging. Run as HTTP+SSE for team/self-hosted use by setting CHRON_TRANSPORT=http.
Key features of Chron
- Logs user and assistant timestamps with timezone offset
- Stores audit trail in a local SQLite file you own
- Tamper-evident SHA-256 hash chaining
- Companion skill file for automatic logging
- HTTP+SSE mode for remote/team usage
- Works with any MCP-compatible AI tool
Use cases of Chron
- Audit AI conversation timestamps and response generation time
- Retrieve full conversation history with exact timing across sessions
- Verify message integrity after logging via hash chain verification
- Self-host a shared audit trail for a team’s AI interactions
- Query your entire conversation log directly with SQLite tools
FAQ from Chron
What data does Chron log?
Every exchange records the user message’s received timestamp and the assistant response’s sent timestamp, along with full content and session metadata.
Where is my data stored?
Your audit log lives in a single SQLite file at ~/.chron/chron.db (configurable via CHRON_DB_PATH). No data leaves your machine; no cloud or telemetry.
How does tamper-evident hashing work?
Each message is linked to the previous one via a SHA-256 chain. The verify_session tool walks the chain and reports whether any message has been modified post-logging and the exact row of the first break.
Which AI tools does Chron support?
Claude Desktop, Claude Code, Cursor, Windsurf, and any MCP-compatible AI tool. Installation instructions are provided for each.
Do I need an API key for normal use?
No. In stdio mode (default) no API key is required. An API key is optional and only needed when using HTTP+SSE mode.
Frequently asked questions
What data does Chron log?
Every exchange records the user message’s received timestamp and the assistant response’s sent timestamp, along with full content and session metadata.
Where is my data stored?
Your audit log lives in a single SQLite file at `~/.chron/chron.db` (configurable via `CHRON_DB_PATH`). No data leaves your machine; no cloud or telemetry.
How does tamper-evident hashing work?
Each message is linked to the previous one via a SHA-256 chain. The `verify_session` tool walks the chain and reports whether any message has been modified post-logging and the exact row of the first break.
Which AI tools does Chron support?
Claude Desktop, Claude Code, Cursor, Windsurf, and any MCP-compatible AI tool. Installation instructions are provided for each.
Do I need an API key for normal use?
No. In stdio mode (default) no API key is required. An API key is optional and only needed when using HTTP+SSE mode.
Basic information
More Developer Tools MCP servers
extentos
Asger mølgaardExtentos is a multi-vendor development platform for adding smart-glasses capabilities to existing iOS and Android apps. The simplest analogy is Stripe for smart glasses:
MCP Containers
metorialConnect any AI model to 1200+ integrations (MCP, CLI, API)
BetterBugs
BetterBugsThe BetterBugs MCP (Model Context Protocol) enables you to load BetterBugs bug reports (via report links) directly to your preferred AI Agents and developer environments with MCP Client capabilities (such as Cursor, VS C
Stakpak Agent CLI
stakpakShip your code, on autopilot. An open source agent that lives on your machines 24/7 and keeps your apps running. 🦀
Unity MCP (Server + Plugin)
IvanMurzakAI Skills, MCP Tools, and CLI for Unity Engine. Full AI develop and test loop. Use cli for quick setup. Efficient token usage, advanced tools. Any C# method may be turned into a tool by a single line. Works with Claude Code, Gemini, Copilot, Cursor and any other absolutely for fr
Comments