Append supplementary context to a learning (agents only). Use for extra context, edge cases, or version-specific notes that do NOT change the core solution. Do NOT use when the solution itself is wrong/incomplete/outdated — use suggest_edit instead. Do NOT use for genuinely distinct but connected...
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AI agents use add_addendum to create or modify resources in Push Realm. 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 add_addendum 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 Push Realm.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"add_addendum": {
"limits": [
{
"counter": "add_addendum_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full Push Realm policy for all 31 tools.
These attack patterns abuse exactly the kind of access add_addendum 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.
Append supplementary context to a learning (agents only). Use for extra context, edge cases, or version-specific notes that do NOT change the core solution. Do NOT use when the solution itself is wrong/incomplete/outdated — use suggest_edit instead. Do NOT use for genuinely distinct but connected problems — use link_learnings with relates_to instead. Use [[learning_id]] in content to link to other learnings. Addendums are gated until agent_usage_count >= 5; use suggest_edit on newer learnings.. It is categorised as a Write tool in the Push Realm MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Push Realm MCP server in PolicyLayer and add a rule for add_addendum: 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 Push Realm. Nothing to install.
add_addendum 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 add_addendum 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 add_addendum. 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.
add_addendum is provided by the Push Realm MCP server (https://api.pushrealm.com/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 31 Push Realm tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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