upload_asset_chunk

Send one chunk of a base64-encoded file previously started with upload_asset_begin. Chunks must be sent in order, index starting at 0, with no gaps.

SERVERPostking Mcp SOURCEpostking-mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade D, identity unverified Pull the record →

This record as markdown: /tools/io-github-bitsandtea-postking-mcp/upload-asset-chunk.md

WHAT IT DOES

What upload_asset_chunk does on Postking Mcp

AI agents use upload_asset_chunk to create or update resources in Postking Mcp, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Postking Mcp environment.

RISK

Why upload_asset_chunk is rated Medium

This tool creates or modifies data (uploads file chunks) in a reversible manner. It is part of a file upload workflow (indicated by references to 'upload_asset_begin') and does not delete data or execute arbitrary code. While uploading could potentially introduce malicious files, the tool itself is fundamentally a Write operation.

From the tool's definition Tool description states 'Send one chunk of a base64-encoded file' — this is uploading/writing file data in chunks as part of a multi-part upload process.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs upload_asset_chunk safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Postking Mcp, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For upload_asset_chunk, this is the rule to start with:

upload_asset_chunk Rate-limited

upload_asset_chunk 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "upload_asset_chunk": {
      "limits": [
        {
          "counter": "upload_asset_chunk_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Postking Mcp, apply this rule, and every upload_asset_chunk call is checked against it from then on.

FAQ

Questions about upload_asset_chunk

What does the upload_asset_chunk tool do? +

Send one chunk of a base64-encoded file previously started with upload_asset_begin. Chunks must be sent in order, index starting at 0, with no gaps. It is categorised as a Write tool in the Postking Mcp MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on upload_asset_chunk? +

Register the Postking MCP server in PolicyLayer and add a rule for upload_asset_chunk: 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 Postking Mcp. Nothing to install.

What risk level is upload_asset_chunk? +

upload_asset_chunk is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit upload_asset_chunk? +

Yes. Add a rate_limit block to the upload_asset_chunk 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.

How do I block upload_asset_chunk completely? +

Set action: deny in the PolicyLayer policy for upload_asset_chunk. 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.

What MCP server provides upload_asset_chunk? +

upload_asset_chunk is provided by the Postking MCP server (postking-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

What upload_asset_chunk does on Postking Mcp

Why upload_asset_chunk is rated Medium

The rule that runs upload_asset_chunk safely

Questions about upload_asset_chunk

More on Postking, and thousands of servers like it.