Use this tool when the user needs a Margin of Safety (MoS) calculation for cosmetic safety assessment, CPSR (Cosmetic Product Safety Report) documentation, or regulatory submission under SCCS Notes of Guidance (SCCS/1647/22) methodology. Computes SED (Systemic Exposure Dose, mg/kg bw/day) from NO...
Part of the Cosmetic Regulatory Intelligence MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.
AI agents call calculate_mos to retrieve information from Cosmetic Regulatory Intelligence without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.
Even though calculate_mos only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.
Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.
tools:
calculate_mos:
rules:
- action: allowSee the full Cosmetic Regulatory Intelligence policy for all 4 tools.
Agents calling read-class tools like calculate_mos have been implicated in these attack patterns. Read the full case and prevention policy for each:
Other tools in the Read risk category across the catalogue. The same policy patterns (rate-limit, allow) apply to each.
Use this tool when the user needs a Margin of Safety (MoS) calculation for cosmetic safety assessment, CPSR (Cosmetic Product Safety Report) documentation, or regulatory submission under SCCS Notes of Guidance (SCCS/1647/22) methodology. Computes SED (Systemic Exposure Dose, mg/kg bw/day) from NOAEL, dermal absorption, product type exposure parameters, and use concentration, then MoS = NOAEL / SED. SCCS safety threshold is MoS > 100 for acceptable consumer risk. Returns SED, MoS value, pass/fail against SCCS-100 threshold, and full calculation trace including NOAEL source, dermal absorption basis, and SCCS exposure parameters used. Do not use for general toxicology or non-cosmetic safety margin queries — this is specifically the SCCS-methodology MoS calculation for cosmetic ingredients.. It is categorised as a Read tool in the Cosmetic Regulatory Intelligence MCP Server, which means it retrieves data without modifying state.
Add a rule in your Intercept YAML policy under the tools section for calculate_mos. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the Cosmetic Regulatory Intelligence MCP server.
calculate_mos 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 calculate_mos rule in your Intercept 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 Intercept policy for calculate_mos. 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.
calculate_mos is provided by the Cosmetic Regulatory Intelligence MCP server (twohalves/cosmetic-regulatory). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Open source. One binary. Zero dependencies.
npx -y @policylayer/intercept