Stdio MCP bridge for SandBase Harness agents, sessions, turns, artifacts, and cancellation.
Connect Runs on your machine
claude mcp add sandbase-harness -e MANAGED_AGENTS_URL=<MANAGED_AGENTS_URL> -e MANAGED_AGENTS_API_KEY=<MANAGED_AGENTS_API_KEY> -- docker run -i --rm ghcr.io/sandbaseai/sandbase-harness-mcp:0.3.8
{
"mcpServers": {
"sandbase-harness": {
"command": "docker",
"args": [
"run",
"-i",
"--rm",
"ghcr.io/sandbaseai/sandbase-harness-mcp:0.3.8"
],
"env": {
"MANAGED_AGENTS_URL": "<MANAGED_AGENTS_URL>",
"MANAGED_AGENTS_API_KEY": "<MANAGED_AGENTS_API_KEY>"
}
}
}
}
{
"mcpServers": {
"sandbase-harness": {
"command": "docker",
"args": [
"run",
"-i",
"--rm",
"ghcr.io/sandbaseai/sandbase-harness-mcp:0.3.8"
],
"env": {
"MANAGED_AGENTS_URL": "<MANAGED_AGENTS_URL>",
"MANAGED_AGENTS_API_KEY": "<MANAGED_AGENTS_API_KEY>"
}
}
}
}
{
"servers": {
"sandbase-harness": {
"type": "stdio",
"command": "docker",
"args": [
"run",
"-i",
"--rm",
"ghcr.io/sandbaseai/sandbase-harness-mcp:0.3.8"
],
"env": {
"MANAGED_AGENTS_URL": "<MANAGED_AGENTS_URL>",
"MANAGED_AGENTS_API_KEY": "<MANAGED_AGENTS_API_KEY>"
}
}
}
}
Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.
Tools
This server runs locally, so its tools are listed by your MCP client once it starts.
Environment variables
| Name | Description |
|---|---|
MANAGED_AGENTS_URLRequired | URL of the SandBase Harness runtime API. |
MANAGED_AGENTS_API_KEYOptional, secret | API key when the connected Harness runtime requires authentication. |
Details
| Package | ghcr.io/sandbaseai/sandbase-harness-mcp:0.3.8 (OCI, stdio) |
| First published | 30 Aug 2026 |
| Last updated | 30 Aug 2026 |
| Registry name | io.github.sandbaseai/sandbase-harness |
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