create_tool
Create a new tool. This tool will be used to create new tools. You can use the tools you have created to perform tasks.
LABSCO SUMMARY
The agent can write its own tools and reach for them on the next turn.
execute_code runs one-off TypeScript or Python; create_tool saves a snippet as a named tool that execute_tool then runs by ID. Code runs on Riza's service, so the reader supplies RIZA_API_KEY and works against tools stored there.
What it is
A code-execution server that runs TypeScript or Python and lets an agent author reusable tools it can call again later.
What you get
- Execute arbitrary TypeScript or Python with execute_code
- Author a reusable tool from source with create_tool, then run it by ID with execute_tool
- List the self-written tools available with list_tools
- Fetch a tool's source with fetch_tool and change it with edit_tool
Requirements
A Riza account, reached through RIZA_API_KEY.
Setup effort
One command plus a key — npx @riza-io/riza-mcp, then supply credentials
USE CASES
01
Turning a snippet into a tool the agent can reuse
Save a piece of code as a named tool, then call it later without re-sending the source.
02
Running a one-off script without leaving the conversation
Execute a piece of TypeScript or Python directly and read the result back.
03
Fixing a saved tool after it misbehaves
Pull a tool's source, change it, and keep the same tool ID.
6 tools
Counted once with only startup setup. Other versions, modes or optional credentials may expose a different list.
edit_tool
Edit a tool, including its source code. Omit properties that you do not want to change.
execute_code
Execute arbitrary Typescript or Python code.
execute_tool
Executes a tool. This tool will be used to execute a self-written tool.
fetch_tool
Fetch a tool, including its source code.
list_tools
Lists the tool definitions of all self-written tools available for use. These tools can be used by calling use_tool with the name and input.
BEFORE YOU INSTALL
What to know first
Tools you get
6 tools when we connected.
Requires
- npx on PATH
- RIZA_API_KEY in your environment
Where it runs
The documented client runs the server on your machine.
CONTEXT COST
Light Standing cost
Rated by the size of the 6 tool definitions that ride along on every turn, not by how many there are
INSTALLATION
Connect your client
Server setup
TERMINAL
npx @riza-io/riza-mcpMCP Clients
Claude Desktop
CLAUDE DESKTOP · JSON
{
"mcpServers": {
"riza-server": {
"command": "npx",
"args": [
"@riza-io/riza-mcp"
],
"env": {
"RIZA_API_KEY": "<YOUR_RIZA_API_KEY>"
}
}
}
}
