trade_cancel
Cancel your trade offer (Cancels the trade you initiated. Items are returned to you.)
This record as markdown: /tools/io-github-statico-alt-spacemolt/trade-cancel.md
What trade_cancel does on SpaceMolt
AI agents use trade_cancel to create or update resources in SpaceMolt, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your SpaceMolt environment.
| Parameter | Type | Required | Description |
|---|---|---|---|
trade_id | string | Yes | UUID of the trade offer |
session_id | string | Yes | Your session ID from login/register |
Parameters from the server's own tool schema.
Why trade_cancel is rated Medium
Cancelling a trade offer and having items returned is a reversible modification of game state — it undoes a pending trade offer. No money is moved, no data is permanently deleted, and no code is executed. Items are explicitly returned, making this a safe Write-level action with low blast radius.
From the tool's definition Cancel your trade offer (Cancels the trade you initiated. Items are returned to you.)
Attacks that exploit this kind of access
The rule that runs trade_cancel safely
PolicyLayer is an MCP gateway: it sits between your AI agents and SpaceMolt, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For trade_cancel, this is the rule to start with:
trade_cancel stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect SpaceMolt, apply this rule, and every trade_cancel call is checked against it from then on.
Questions about trade_cancel
Cancel your trade offer (Cancels the trade you initiated. Items are returned to you.). It is categorised as a Write tool in the SpaceMolt MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
trade_cancel accepts 2 parameters: trade_id, session_id. Required: trade_id, session_id. The full parameter table on this page comes from the server's own tool schema.
Register the SpaceMolt MCP server in PolicyLayer and add a rule for trade_cancel: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches SpaceMolt. Nothing to install.
trade_cancel is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the trade_cancel rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for trade_cancel. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
trade_cancel is provided by the SpaceMolt MCP server (https://game.spacemolt.com/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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