fundos_call_tool
Use this to invoke any FundOS @tool by name when its inputs are known. The args object is
This record as markdown: /tools/8vdx1-fundos-mcp/fundos-call-tool.md
What fundos_call_tool does on Fundos
AI agents invoke fundos_call_tool to trigger actions in Fundos. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.
Why fundos_call_tool is rated High
This tool is a generic execution gateway that allows invoking arbitrary FundOS tools at runtime based on caller-supplied tool names and arguments. In the context of a fund management system handling deal pipelines, LP management, capital calls, and financial transactions, this represents critical execution risk.
From the tool's definition Tool explicitly designed to 'invoke any FundOS @tool by name' with dynamic arguments. This is a meta-invocation mechanism that can execute any of the 47 tools on the server (including financial operations like capital calls, covenant checks, waterfall…
Attacks that exploit this kind of access
The rule that runs fundos_call_tool safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Fundos, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For fundos_call_tool, this is the rule to start with:
fundos_call_tool stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Fundos, apply this rule, and every fundos_call_tool call is checked against it from then on.
Questions about fundos_call_tool
Use this to invoke any FundOS @tool by name when its inputs are known. The args object is. It is categorised as a Execute tool in the Fundos MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Fundos MCP server in PolicyLayer and add a rule for fundos_call_tool: 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 Fundos. Nothing to install.
fundos_call_tool is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the fundos_call_tool 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 fundos_call_tool. 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.
fundos_call_tool is provided by the Fundos MCP server (8vdx1/fundos-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
More on Fundos, and thousands of servers like it.
Across the catalogue