ChangePacket

Tools

Token cost is the o200k count of the tools list JSON, including schemas, before any tool is called.

• check_url_changes

  Use for repeated research on one public webpage when the agent only needs what changed since its last call. First call stores a baseline; later calls return added/removed text lines. Avoid for authent

• check_mcp_surface_changes

  Use when an agent depends on a remote public HTTPS MCP server and needs to know whether its tool catalog changed. First call stores the tools/list baseline; later calls return only added, removed, or

• buy_changepacket_calls

  Use only when free usage is exhausted or persistent production use is needed. Returns a Stripe checkout URL for 2,000 prepaid ChangePacket calls for $9; it does not itself charge or expose payment cre