List notifications addressed to the configured Bluesky account: mentions and replies by default, optionally include reposts/likes/follows. FREE. Requires social.bluesky.handle and app_password. Returns: { notifications: [{ uri, cid, reason, author, record, indexed_at, is_read }] }. Common errors:...
Part of the Pipepost server.
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AI agents call bluesky_mentions to retrieve information from Pipepost without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.
Even though bluesky_mentions only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.
Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.
{
"version": "1",
"default": "deny",
"tools": {
"bluesky_mentions": {}
}
}See the full Pipepost policy for all 29 tools.
These attack patterns abuse exactly the kind of access bluesky_mentions gives an agent. Each links to the full case and the policy that stops it:
Other read tools across the catalogue. The same approach applies to each: allow, with a rate cap to control cost.
List notifications addressed to the configured Bluesky account: mentions and replies by default, optionally include reposts/likes/follows. FREE. Requires social.bluesky.handle and app_password. Returns: { notifications: [{ uri, cid, reason, author, record, indexed_at, is_read }] }. Common errors: missing credentials (VALIDATION_ERROR), AppView temporarily unavailable (PLATFORM_ERROR; the client falls back to bsky.social).. It is categorised as a Read tool in the Pipepost MCP Server, which means it retrieves data without modifying state.
Register the Pipepost MCP server in PolicyLayer and add a rule for bluesky_mentions: 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 Pipepost. Nothing to install.
bluesky_mentions 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 bluesky_mentions 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 bluesky_mentions. 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.
bluesky_mentions is provided by the Pipepost MCP server (pipepost-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 29 Pipepost tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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