mcp-code-executor-server

An MCP server that exposes a code-execution tool to AI agents, allowing code submissions in multiple languages to be compiled and run in an isolated/sandboxed environment with resource limits and error output.

Evaluated Apr 04, 2026 (17d ago)
Homepage ↗ Repo ↗ DevTools mcp code-execution sandbox runtime containers developer-tools ai-agents
⚙ Agent Friendliness
55
/ 100
Can an agent use this?
🔒 Security
24
/ 100
Is it safe for agents?
⚡ Reliability
26
/ 100
Does it work consistently?

Score Breakdown

⚙ Agent Friendliness

MCP Quality
70
Documentation
55
Error Messages
0
Auth Simplicity
90
Rate Limits
0

🔒 Security

TLS Enforcement
30
Auth Strength
10
Scope Granularity
0
Dep. Hygiene
50
Secret Handling
40

The README emphasizes isolated containers, resource limits (CPU/memory/timeouts), and cleanup of temporary files, which are positive security properties for executing untrusted code. However, the provided content does not document transport security requirements (HTTPS/TLS), authentication/authorization, scope/tenant separation, network/file access restrictions inside the sandbox, or secret-handling behavior. Dependency hygiene cannot be verified from the provided material.

⚡ Reliability

Uptime/SLA
0
Version Stability
40
Breaking Changes
30
Error Recovery
35
AF Security Reliability

Best When

You need an agent-accessible, standardized MCP tool for quick compile-and-run across several languages, and you can deploy/harden the sandbox and resource limits appropriately.

Avoid When

You cannot ensure container isolation, network/file-system restrictions, or you need strong operational guarantees (SLA, observability, documented retry semantics).

Use Cases

  • Run small code snippets from an AI agent (compile-and-run)
  • Provide automated judging/verification for candidate solutions
  • Support multi-language development workflows inside an agent toolchain
  • Debugging assistance by returning compile-time and runtime errors

Not For

  • Running untrusted code without strong sandboxing guarantees and hardened container/host configuration
  • High-throughput or multi-tenant production environments without documented quotas/authn/authz
  • Long-running workloads or persistent stateful execution beyond the request lifecycle

Interface

REST API
No
GraphQL
No
gRPC
No
MCP Server
Yes
SDK
No
Webhooks
No

Authentication

OAuth: No Scopes: No

No authentication/authorization mechanism is described in the provided README content. The server is shown running locally and listening on port 8080.

Pricing

Free tier: No
Requires CC: No

Pricing not applicable/unspecified (appears self-hosted).

Agent Metadata

Pagination
none
Idempotent
False
Retry Guidance
Not documented

Known Gotchas

  • The README describes a single 'code-execution' tool and an example request, but does not document the full MCP schema, expected response fields, or tool naming conventions beyond a conceptual description.
  • Authentication/rate limiting/quotas are not described; agents should assume they may need external throttling and that misuse could overwhelm the sandbox.
  • Because execution runs untrusted code, agents should be cautious about passing secrets and about requesting operations that may attempt network access or filesystem interaction unless explicitly blocked in the sandbox implementation.

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Scores are editorial opinions as of 2026-04-04.

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