Attach an anonymous token (returned by create_postgres / create_webhook) to the authenticated caller's account. Idempotent — re-claiming a token you already own returns the same payload. For paid callers, the resource's tier is upgraded to 'paid' and its expiry is cleared. For free callers, the r...
Risk signalsHandles credentials or secrets (token)
Part of the Instanode server.
Free to start. No card required.
AI agents use claim_token to create or modify resources in Instanode. 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 claim_token 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 Instanode.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"claim_token": {
"limits": [
{
"counter": "claim_token_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full Instanode policy for all 6 tools.
These attack patterns abuse exactly the kind of access claim_token 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.
Attach an anonymous token (returned by create_postgres / create_webhook) to the authenticated caller's account. Idempotent — re-claiming a token you already own returns the same payload. For paid callers, the resource's tier is upgraded to 'paid' and its expiry is cleared. For free callers, the resource stays anonymous-tier but is now visible on the dashboard. Requires INSTANODE_TOKEN.. It is categorised as a Write tool in the Instanode MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Instanode MCP server in PolicyLayer and add a rule for claim_token: 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 Instanode. Nothing to install.
claim_token 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 claim_token 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 claim_token. 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.
claim_token is provided by the Instanode MCP server (@instanode/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 6 Instanode tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
4,600+ MCP servers and 31,000+ tools scanned and risk-classified.