get_abstract_syntax_tree
Output the Abstract Syntax Tree of code
Part of the Semgrep MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.
WHEN AI AGENTS USE THIS TOOL
AI agents call get_abstract_syntax_tree to retrieve information from Semgrep 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.
WHY ENFORCE A POLICY ON GET_ABSTRACT_SYNTAX_TREE
Even though get_abstract_syntax_tree 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.
RECOMMENDED POLICY
Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.
tools:
get_abstract_syntax_tree:
rules:
- action: allowSee the full Semgrep policy for all 8 tools.
DETAILS
MORE SEMGREP TOOLS
write_custom_semgrep_rule Write security_check Other semgrep_findings Other semgrep_rule_schema Other semgrep_scan Other semgrep_scan_with_custom_rule Other supported_languages Other SIMILAR READ TOOLS ON OTHER SERVERS
list_bases Airtable list_tables Airtable list_records Airtable get_record Airtable search_records Airtable search Amplitude RELATED READING
FREQUENTLY ASKED QUESTIONS
What does the get_abstract_syntax_tree tool do?
Output the Abstract Syntax Tree of code. It is categorised as a Read tool in the Semgrep MCP Server, which means it retrieves data without modifying state.
How do I enforce a policy on get_abstract_syntax_tree?
Add a rule in your Intercept YAML policy under the tools section for get_abstract_syntax_tree. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the Semgrep MCP server.
What risk level is get_abstract_syntax_tree?
get_abstract_syntax_tree is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Can I rate-limit get_abstract_syntax_tree?
Yes. Add a rate_limit block to the get_abstract_syntax_tree 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.
How do I block get_abstract_syntax_tree completely?
Set action: deny in the Intercept policy for get_abstract_syntax_tree. 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.
What MCP server provides get_abstract_syntax_tree?
get_abstract_syntax_tree is provided by the Semgrep MCP server (semgrep/mcp). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.
ENFORCE POLICIES ON SEMGREP
Open source. One binary. Zero dependencies.