safe_note
SAFE / Convertible Note Calculator — Conversion price and shares for a SAFE with a cap and/or discount.
This record as markdown: /tools/com-wingmanprotocol-agent-gateway/safe-note.md
What safe_note does on Gateway
AI agents call safe_note to retrieve information from Gateway without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
investment | number | Yes | Investment amount in USD |
discount_pct | number | — | Discount percent off the round price |
valuation_cap | number | — | Valuation cap in USD |
pre_round_shares | number | — | Pre-round fully-diluted shares (for cap price) |
round_price_per_share | number | Yes | Priced round's price per share in USD |
Parameters from the server's own tool schema.
Why safe_note is rated Low
Even though safe_note only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.
Attacks that exploit this kind of access
The rule that runs safe_note safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Gateway, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For safe_note, this is the rule to start with:
safe_note is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Gateway, apply this rule, and every safe_note call is checked against it from then on.
Questions about safe_note
SAFE / Convertible Note Calculator — Conversion price and shares for a SAFE with a cap and/or discount. It is categorised as a Read tool in the Gateway MCP Server, which means it retrieves data without modifying state.
safe_note accepts 5 parameters: investment, discount_pct, valuation_cap, pre_round_shares, round_price_per_share. Required: investment, round_price_per_share. The full parameter table on this page comes from the server's own tool schema.
Register the Gateway MCP server in PolicyLayer and add a rule for safe_note: 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 Gateway. Nothing to install.
safe_note is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the safe_note 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 safe_note. 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.
safe_note is provided by the Gateway MCP server (https://wingmanprotocol.com/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
More on Gateway, and thousands of servers like it.
This server
Across the catalogue