Sandbox DSL spec execution via pydantic-monty - #1
Open
michaelballantyne wants to merge 1 commit into
Open
Conversation
run_pipeline previously ran agent-authored spec.py with a bare exec(compile(...)), giving untrusted DSL code full host access. Run it inside pydantic-monty instead. - sandbox.py: execute(code, namespace) runs the spec in a MontyRepl with resource limits and a restricted import/builtin surface, and returns the top-level bindings (shape-equivalent to the old post-exec namespace). Form nodes are marshalled across the boundary as opaque NodeHandle ids (host keeps the real Node table) so deep upstream chains don't re-serialize and forged/mutated handles are rejected. Forms register under their real names (none collide with a Monty builtin), so specs still need no imports. - mcp_server.run_pipeline: call sandbox.execute(); surface SandboxError / SyntaxError as BUILD FAILED. reset_sinks/collected_sinks/leaf_nodes and the dry-run/report logic are unchanged. - tests/test_sandbox.py: plain-python asserts (no numpy) covering build, kwargs, dry-run recovery, error surfacing, security blocks, and forgery. - requirements.txt: declare the new pydantic-monty dependency. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01EiiXjxvhep4tZXmnwRqe8H
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
run_pipeline previously ran agent-authored spec.py with a bare exec(compile(...)), giving untrusted DSL code full host access. Run it inside pydantic-monty instead.
Claude-Session: https://claude.ai/code/session_01EiiXjxvhep4tZXmnwRqe8H