Request a short-lived upload target for agent-native video upload. Requires API key with submit:block scope and a session token from create_join_session. Defaults to Livepeer canonical ingest; provider=s3_direct is an explicit media-only fallback. Livepeer uses TUS: create the upload with POST wh...
Risk signalsAccepts file system path (filename)
Part of the PoolParty Main Stage Airtime server.
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AI agents use request_media_upload_url to create or modify resources in PoolParty Main Stage Airtime. Write operations carry medium risk because an autonomous agent could trigger bulk unintended modifications. Rate limits prevent a single agent session from making hundreds of changes in rapid succession. Argument validation ensures the agent passes expected values.
Without a policy, an AI agent could call request_media_upload_url repeatedly, creating or modifying resources faster than any human could review. PolicyLayer's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach PoolParty Main Stage Airtime.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"request_media_upload_url": {
"limits": [
{
"counter": "request_media_upload_url_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full PoolParty Main Stage Airtime policy for all 71 tools.
These attack patterns abuse exactly the kind of access request_media_upload_url gives an agent. Each links to the full case and the policy that stops it:
Other write tools across the catalogue. The same approach applies to each: rate-limit and validate the arguments.
Request a short-lived upload target for agent-native video upload. Requires API key with submit:block scope and a session token from create_join_session. Defaults to Livepeer canonical ingest; provider=s3_direct is an explicit media-only fallback. Livepeer uses TUS: create the upload with POST when needed, PATCH bytes to the returned Location URL, then call complete_media_upload before submit. Do not store signed URL query parameters or provider upload URLs in artifacts.. It is categorised as a Write tool in the PoolParty Main Stage Airtime MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the PoolParty Main Stage Airtime MCP server in PolicyLayer and add a rule for request_media_upload_url: 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 PoolParty Main Stage Airtime. Nothing to install.
request_media_upload_url 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 request_media_upload_url 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 request_media_upload_url. 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.
request_media_upload_url is provided by the PoolParty Main Stage Airtime MCP server (https://www.poolparty.io/api/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 71 PoolParty Main Stage Airtime tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
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