update_reddit_ads_audience_users
Add people to, or remove people from, a Reddit custom audience. Pass ordinary email addresses and/or mobile advertising ids — each one is canonicalised the way Reddit specifies and SHA-256 hashed on our server before it is sent, so raw customer data never reaches Reddit, and an identifier you alr...
This record as markdown: /tools/hermoso/update-reddit-ads-audience-users.md
What update_reddit_ads_audience_users does on Hermoso
AI agents use update_reddit_ads_audience_users to create or update resources in Hermoso, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Hermoso environment.
Why update_reddit_ads_audience_users is rated Medium
An AI agent can call update_reddit_ads_audience_users faster than any human can review: one bad instruction and it creates or modifies resources in Hermoso by the hundred, each call as confident as the last.
Risk signalsBulk/mass operation — affects multiple targets
Attacks that exploit this kind of access
The rule that runs update_reddit_ads_audience_users safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Hermoso, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For update_reddit_ads_audience_users, this is the rule to start with:
update_reddit_ads_audience_users 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 Hermoso, apply this rule, and every update_reddit_ads_audience_users call is checked against it from then on.
Questions about update_reddit_ads_audience_users
Add people to, or remove people from, a Reddit custom audience. Pass ordinary email addresses and/or mobile advertising ids — each one is canonicalised the way Reddit specifies and SHA-256 hashed on our server before it is sent, so raw customer data never reaches Reddit, and an identifier you already hashed is passed through untouched. Up to 2,500 rows per call; send bigger lists as repeated calls and the audience accumulates. EVERY ROW MUST CARRY THE SAME FIELDS: Reddit’s upload is positional, so if some rows have an email and others do not, the values shift into the wrong column and match nobody — split those into separate calls instead. After Reddit accepts the upload the size does not move for up to 4 hours and processing can take 36, so never re-send the same batch because the count looks unchanged. Free. It is categorised as a Write tool in the Hermoso MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Hermoso MCP server in PolicyLayer and add a rule for update_reddit_ads_audience_users: 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 Hermoso. Nothing to install.
update_reddit_ads_audience_users 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 update_reddit_ads_audience_users 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 update_reddit_ads_audience_users. 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.
update_reddit_ads_audience_users is provided by the Hermoso MCP server (https://app.hermoso.ai/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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