| 1 | { |
| 2 | "description": "Deny rules naming single tools. Pins Rust McpPool::authorize_call / tool_allowed / Engine::execute_mcp_tool_with_pool: a denied tool (rule match is case-insensitive) leaves the catalog, a call to it is refused as not available before anything reaches the server, and its siblings and the resource tools keep working. server_received proves the refused calls were never sent.", |
| 3 | "server_name": "conformance", |
| 4 | "disallowed_tools": [ |
| 5 | "MCP_CONFORMANCE_FAILS", |
| 6 | "mcp_get_prompt" |
| 7 | ], |
| 8 | "server": { |
| 9 | "initialize": { |
| 10 | "result": { |
| 11 | "protocolVersion": "2025-06-18", |
| 12 | "serverInfo": { |
| 13 | "name": "deny-fixture", |
| 14 | "version": "1.0.0" |
| 15 | }, |
| 16 | "capabilities": { |
| 17 | "tools": {}, |
| 18 | "resources": {}, |
| 19 | "prompts": {} |
| 20 | } |
| 21 | } |
| 22 | }, |
| 23 | "tools/list": { |
| 24 | "result": { |
| 25 | "tools": [ |
| 26 | { |
| 27 | "name": "echo", |
| 28 | "inputSchema": { |
| 29 | "type": "object" |
| 30 | } |
| 31 | }, |
| 32 | { |
| 33 | "name": "fails", |
| 34 | "inputSchema": { |
| 35 | "type": "object" |
| 36 | } |
| 37 | } |
| 38 | ] |
| 39 | } |
| 40 | }, |
| 41 | "resources/list": { |
| 42 | "result": { |
| 43 | "resources": [ |
| 44 | { |
| 45 | "uri": "fixture://readme", |
| 46 | "name": "readme", |
| 47 | "mimeType": "text/plain" |
| 48 | } |
| 49 | ] |
| 50 | } |
| 51 | }, |
| 52 | "prompts/list": { |
| 53 | "result": { |
| 54 | "prompts": [ |
| 55 | { |
| 56 | "name": "summarize", |
| 57 | "description": "Summarize." |
| 58 | } |
| 59 | ] |
| 60 | } |
| 61 | }, |
| 62 | "resources/read": [ |
| 63 | { |
| 64 | "match": { |
| 65 | "uri": "fixture://readme" |
| 66 | }, |
| 67 | "result": { |
| 68 | "contents": [ |
| 69 | { |
| 70 | "uri": "fixture://readme", |
| 71 | "mimeType": "text/plain", |
| 72 | "text": "readme\n" |
| 73 | } |
| 74 | ] |
| 75 | } |
| 76 | } |
| 77 | ], |
| 78 | "prompts/get": [ |
| 79 | { |
| 80 | "match": { |
| 81 | "name": "summarize" |
| 82 | }, |
| 83 | "result": { |
| 84 | "messages": [ |
| 85 | { |
| 86 | "role": "user", |
| 87 | "content": { |
| 88 | "type": "text", |
| 89 | "text": "Summarize." |
| 90 | } |
| 91 | } |
| 92 | ] |
| 93 | } |
| 94 | } |
| 95 | ], |
| 96 | "tools/call": [ |
| 97 | { |
| 98 | "match": { |
| 99 | "name": "echo" |
| 100 | }, |
| 101 | "result": { |
| 102 | "content": [ |
| 103 | { |
| 104 | "type": "text", |
| 105 | "text": "echo" |
| 106 | } |
| 107 | ] |
| 108 | } |
| 109 | }, |
| 110 | { |
| 111 | "match": { |
| 112 | "name": "fails" |
| 113 | }, |
| 114 | "result": { |
| 115 | "content": [ |
| 116 | { |
| 117 | "type": "text", |
| 118 | "text": "ran" |
| 119 | } |
| 120 | ] |
| 121 | } |
| 122 | } |
| 123 | ] |
| 124 | }, |
| 125 | "steps": [ |
| 126 | { |
| 127 | "op": "catalog" |
| 128 | }, |
| 129 | { |
| 130 | "op": "call", |
| 131 | "tool": "mcp_conformance_echo", |
| 132 | "input": {} |
| 133 | }, |
| 134 | { |
| 135 | "op": "call", |
| 136 | "tool": "mcp_conformance_fails", |
| 137 | "input": {} |
| 138 | }, |
| 139 | { |
| 140 | "op": "call", |
| 141 | "tool": "mcp_get_prompt", |
| 142 | "input": { |
| 143 | "server": "conformance", |
| 144 | "name": "summarize" |
| 145 | } |
| 146 | }, |
| 147 | { |
| 148 | "op": "call", |
| 149 | "tool": "mcp_read_resource", |
| 150 | "input": { |
| 151 | "server": "conformance", |
| 152 | "uri": "fixture://readme" |
| 153 | } |
| 154 | } |
| 155 | ] |
| 156 | } |
| 157 |