Return full contents of any supported file as structured text.
AI agents call view_file_full to retrieve information from Project Tessera without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and reads file contents without side effects. It is a query/fetch operation that does not create, modify, delete, or execute code. The primary concern is data exposure if the workspace contains sensitive information, but the tool itself performs only read operations. Severity is low because the impact depends entirely on what files exist in the local workspace; the tool itself cannot cause damage.
From the tool's definition Tool description states 'Return full contents of any supported file as structured text' — a retrieval operation with no modification, deletion, or execution capability.
Documented attack patterns abuse exactly the kind of access view_file_full gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Project Tessera, and nothing reaches the server without passing your rules. This is the rule we recommend for view_file_full:
{
"version": "1",
"default": "deny",
"tools": {
"view_file_full": {}
}
}view_file_full is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Return full contents of any supported file as structured text. It is categorised as a Read tool in the Project Tessera MCP Server, which means it retrieves data without modifying state.
Register the Project Tessera MCP server in PolicyLayer and add a rule for view_file_full: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Project Tessera. Nothing to install.
view_file_full is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the view_file_full rule in your PolicyLayer 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 PolicyLayer policy for view_file_full. 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.
view_file_full is provided by the Project Tessera MCP server (besslframework-stack/project-tessera). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Project Tessera, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
43 Project Tessera tools catalogued and risk-classified — across an index of 43,000+ MCP servers.