---
title: "Limits and known behaviour"
description: "Things that are true by design, so they don't surprise you later."
canonical: https://past.dev/docs/mcp/limits
last-updated: 2026-08-26
---
# Limits and known behaviour

> Things that are true by design, so they don't surprise you later.

Product: past.dev MCP Server. Source: https://past.dev/docs/mcp/limits

- **One workspace at a time.** There's no picker in the sign-in flow. The connection uses whichever workspace is currently active for your account; change it in the past.dev app, and the change applies from the next tool call.
- **Tools only.** The server exposes tools, not MCP prompts or resources.
- **No push notifications.** Because the transport is stateless, the server can't proactively notify your client that something changed. Assistants poll by asking.
- **Writes are additive.** The tools add memories, documents and conversations; nothing edits or deletes what is already there. Corrections happen in the past.dev app.
- **No MCP-specific admin policy.** Connection is self-service and permissions follow your past.dev role; there is no workspace switch, per-tool restriction or client allow-list yet. Section 6 is the full inventory.
- **Not in the Claude directory yet.** Manual custom-connector setup is the supported path today, and is functionally identical.