AI agents call chunk_array to retrieve information from TinyFn without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
size | integer | — | Chunk size |
items | string | Yes | Comma-separated items |
Parameters from the server's own tool schema.
This is a pure data transformation utility with no side effects. It retrieves and reorganizes data in memory without creating, modifying, or destroying anything. The operation is reversible and deterministic. It belongs in the Read category as the least risky classification for data processing tools.
From the tool's definition Tool 'chunk_array' splits/partitions array items into chunks of specified size. No data is modified, deleted, or persisted—it only transforms and returns structured data.
Attacks that exploit this kind of access
Split items into chunks of specified size. It is categorised as a Read tool in the TinyFn MCP Server, which means it retrieves data without modifying state.
chunk_array accepts 2 parameters: size, items. Required: items. The full parameter table on this page comes from the server's own tool schema.
Register the TinyFn MCP server in PolicyLayer and add a rule for chunk_array: 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 TinyFn. Nothing to install.
chunk_array 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 chunk_array 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 chunk_array. 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.
chunk_array is provided by the TinyFn MCP server (https://api.tinyfn.io/mcp/all/). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
chunk_array is one line of TinyFn's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
Teams ship this data inside their own products. See what a licence covers →