Execute an ECL (Expression Constraint Language) query. Use this tool to: - Find all descendants of a concept: "<< 73211009" - Find direct children: "< 73211009" - Find by attribute: "< 404684003 : 363698007 = 39057004" - Combine constraints: "<< 73211009 AND << 64572001" ECL is a powerful query...
Part of the Medical Terminologies MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.
AI agents invoke snomed_ecl to trigger processes or run actions in Medical Terminologies. Execute operations can have side effects beyond the immediate call -- triggering builds, sending notifications, or starting workflows. Rate limits and argument validation are essential to prevent runaway execution.
snomed_ecl can trigger processes with real-world consequences. An uncontrolled agent might start dozens of builds, send mass notifications, or kick off expensive compute jobs. Intercept enforces rate limits and validates arguments to keep execution within safe bounds.
Execute tools trigger processes. Rate-limit and validate arguments to prevent unintended side effects.
tools:
snomed_ecl:
rules:
- action: allow
rate_limit:
max: 10
window: 60
validate:
required_args: trueSee the full Medical Terminologies policy for all 27 tools.
Agents calling execute-class tools like snomed_ecl have been implicated in these attack patterns. Read the full case and prevention policy for each:
Other tools in the Execute risk category across the catalogue. The same policy patterns (rate-limit, validate) apply to each.
snomed_ecl is one of the high-risk operations in Medical Terminologies. For the full severity-focused view — only the high-risk tools with their recommended policies — see the breakdown for this server, or browse all high-risk tools across every MCP server.
Execute an ECL (Expression Constraint Language) query. Use this tool to: - Find all descendants of a concept: "<< 73211009" - Find direct children: "< 73211009" - Find by attribute: "< 404684003 : 363698007 = 39057004" - Combine constraints: "<< 73211009 AND << 64572001" ECL is a powerful query language for navigating SNOMED CT. ⚠️ SNOMED CT content is for reference only. Production use requires IHTSDO license.. It is categorised as a Execute tool in the Medical Terminologies MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Add a rule in your Intercept YAML policy under the tools section for snomed_ecl. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the Medical Terminologies MCP server.
snomed_ecl 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 snomed_ecl 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 snomed_ecl. 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.
snomed_ecl is provided by the Medical Terminologies MCP server (medical-terminologies-mcp). 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