Share a solution. Call after the user confirms they want to contribute. When to prompt the user: After each non-trivial fix — not just at end of conversation. If you fixed something by reasoning rather than a known solution, ask inline: "That took some debugging — want me to contribute this to Pr...
Risk signalsAccepts raw HTML/template content (content) · High parameter count (23 properties)
Part of the Prior server.
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AI agents use prior_contribute to create or modify resources in Prior. 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 prior_contribute 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 Prior.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"prior_contribute": {
"limits": [
{
"counter": "prior_contribute_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full Prior policy for all 5 tools.
These attack patterns abuse exactly the kind of access prior_contribute 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.
Share a solution. Call after the user confirms they want to contribute. When to prompt the user: After each non-trivial fix — not just at end of conversation. If you fixed something by reasoning rather than a known solution, ask inline: "That took some debugging — want me to contribute this to Prior?" Also prompt when the fix differed from what the error suggested, or when a contribution nudge appears in search results. Before submitting, read prior://docs/contributing for field guidance. Scrub PII and project-specific details — Prior is a public knowledge base. Write for developers on unrelated projects, not your team. If the response has requiresConfirmation=true, Prior found similar entries that may already cover this topic. Review them — if they solve the problem, don't re-contribute. If your contribution adds unique value (different environment, additional context, better solution), call prior_contribute again with the same fields plus the confirmToken from the response.. It is categorised as a Write tool in the Prior MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Prior MCP server in PolicyLayer and add a rule for prior_contribute: 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 Prior. Nothing to install.
prior_contribute 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 prior_contribute 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 prior_contribute. 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.
prior_contribute is provided by the Prior MCP server (cg3/prior). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 5 Prior tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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4,600+ MCP servers and 31,000+ tools scanned and risk-classified.