substack-ops runs on your own machine — the client starts it, so there is no endpoint to ping. 64 installs a week from pypi. Last commit 24 May 2026.
Substack CLI + 26-tool MCP server. Your IDE drafts replies via propose_reply. No API keys.
We read the source, 6 d ago · rules 995398eba69f
What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.
result = subprocess.run(
Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.
We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.
This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.
claude mcp add substack-ops -- uvx substack-ops
{
"mcpServers": {
"substack-ops": {
"command": "uvx",
"args": [
"substack-ops"
]
}
}
}
[mcp_servers.substack-ops]
command = "uvx"
args = ["substack-ops"]
{
"mcpServers": {
"substack-ops": {
"command": "uvx",
"args": [
"substack-ops"
]
}
}
}
{
"servers": {
"substack-ops": {
"type": "stdio",
"command": "uvx",
"args": [
"substack-ops"
]
}
}
}
Optional settings from the registry entry, left out of the block above:
SUBSTACK_PUBLICATION_URL (Your Substack publication URL (e.g. https://you.substack.com/). Optional if set in ~/.cursor/mcp.json's mcpServers.substack-api.env), SUBSTACK_USER_ID (Your Substack numeric user id. Optional if set in ~/.cursor/mcp.json), SUBSTACK_SESSION_TOKEN (Your Substack session cookie value (the s%3A... string). Required for authenticated calls. Easier path: run `substack-ops auth login --browser chrome` and the cookie is auto-grabbed), SUBSTACK_OPS_MCP_PATH (Override path to the mcp.json file the auth layer reads. Defaults to ~/.cursor/mcp.json), SUBSTACK_OPS_LLM_CMD (Optional: override the host CLI used by the unattended daemon path (default: auto-detect claude / cursor-agent / codex on PATH). Use {prompt} placeholder if your CLI takes the prompt as an arg).
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Answers built from our own checks of this server.