結合テスト用。MCP仕様に沿ったエラーを返す。
AI agents call dev-error-test to retrieve information from Local Context without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a development and testing tool that returns error responses to help validate MCP error handling. It has no side effects on real data or systems. It merely generates and returns test error messages, making it a read-like operation with no capability to modify state or cause harm.
From the tool's definition Tool is described in Japanese as returning 'errors conforming to MCP specification for integration testing.' The tool name 'dev-error-test' indicates a test/development tool.
Attacks that exploit this kind of access
結合テスト用。MCP仕様に沿ったエラーを返す。. It is categorised as a Read tool in the Local Context MCP Server, which means it retrieves data without modifying state.
Register the Local Context MCP server in PolicyLayer and add a rule for dev-error-test: 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 Local Context. Nothing to install.
dev-error-test 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 dev-error-test 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 dev-error-test. 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.
dev-error-test is provided by the Local Context MCP server (obaratch/local-context-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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