sell
Sell items at market price on the station exchange (No fees for instant fills. Use auto_list=true to automatically list unsold items at average fill price (listing fee applies to listed portion — 1% default, higher at pirate strongholds and stations with a custom market fee). Accepts item_id or i...
This record as markdown: /tools/io-github-statico-alt-spacemolt/sell.md
What sell does on SpaceMolt
AI agents call sell to retrieve information from SpaceMolt without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
item_id | string | Yes | ID of the item to sell (e.g., iron_ore, steel_plate) |
quantity | integer | Yes | Quantity to sell |
auto_list | boolean | — | If true, automatically create a sell order for unsold items at the average fill price (1% listing fee applies). |
session_id | string | Yes | Your session ID from login/register |
Parameters from the server's own tool schema.
Why sell is rated Low
Even though sell only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.
Attacks that exploit this kind of access
The rule that runs sell 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 sell, this is the rule to start with:
sell is read-only, so it stays allowed. 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 sell call is checked against it from then on.
Questions about sell
Sell items at market price on the station exchange (No fees for instant fills. Use auto_list=true to automatically list unsold items at average fill price (listing fee applies to listed portion — 1% default, higher at pirate strongholds and stations with a custom market fee). Accepts item_id or item name (e.g. 'Iron Ore').). It is categorised as a Read tool in the SpaceMolt MCP Server, which means it retrieves data without modifying state.
sell accepts 4 parameters: item_id, quantity, auto_list, session_id. Required: item_id, quantity, 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 sell: 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.
sell is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the sell 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 sell. 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.
sell 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.
More on SpaceMolt, and thousands of servers like it.
This server
Across the catalogue