What is the core function of Surfil?
Surfil is an on-device control plane for AI coding agents that aims to reduce token costs and improve security. It runs alongside tools like Claude Code, Cursor, Codex, and Copilot to monitor and manage their operations without source code leaving the machine. This is measured across 533 intercepted requests in a published run.
What specific problems does Surfil address for developers using AI tools?
Surfil addresses token cost overruns and security risks by intercepting and analyzing API calls from AI agents. It blocks risky outbound calls, like those containing API keys, and provides verified savings reports. In a published run, it screened 39 of 533 requests and observed two credential types (anthropic-key, github-token) in traffic.
Who is the target user for Surfil?
Surfil is designed for developers who use AI coding agents and want to control their token spending and enhance security. The product is categorized as a developer tool and its homepage describes it as the control plane for AI coding agents.
What are the key features and verification methods offered by Surfil?
Key features include on-device interception, token cost measurement, security screening for credentials, and cryptographic proof via Ed25519-signed receipts. The tool provides byte-exact analysis and 100% offline-verifiable receipts, allowing users to verify claims themselves using a public key.
How is Surfil priced or packaged?
Surfil offers a Pro tier that can be tried for $1, as indicated by a 'Try Pro for $1' call-to-action on its homepage. The published run mentions it includes 250 signed outputs.
How does Surfil compare with the median product in the Developer & AI Platform category?
Surfil's domain authority is 8, which is below the category median of 22. It has zero measured AI traffic visits, matching the category median. There are 2,619 products in this category.
What is Surfil?
Surfil is an on-device control plane for AI coding agents. It is installed locally to monitor and manage tools like Claude Code, Cursor, Codex, and Copilot, aiming to reduce costs and improve security without source code leaving the user's machine.