Publish Layerfault synthetic corpus LF-CORPUS-MCP-0001

LAYERFAULT_CORPUS.json

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+{
+  "candidate_rules": [
+    "LF-MCP-AUTH-ABSENT",
+    "LF-MCP-AUTH-METADATA-MISSING",
+    "LF-MCP-TOKEN-AUDIENCE-UNBOUND",
+    "LF-MCP-ORIGIN-UNRESTRICTED"
+  ],
+  "corpus_id": "LF-CORPUS-MCP-0001",
+  "description": "Static MCP configuration combining plaintext transport, URL credentials, fake env credentials, overbroad scopes, unpinned npx, auto-confirm and contradictory tool annotation.",
+  "expected_rules": [
+    "LF-MCP-TLS-ABSENT",
+    "LF-MCP-CREDENTIAL-IN-URL",
+    "LF-MCP-CREDENTIAL-ENV-EXPOSURE",
+    "LF-MCP-SCOPE-OVERBROAD",
+    "LF-MCP-SUPPLY-CHAIN-AUTO-DOWNLOAD",
+    "LF-MCP-SUPPLY-CHAIN-AUTO-CONFIRM",
+    "LF-MCP-CONTRADICTORY-ANNOTATION",
+    "LF-MCP-TOKEN-PASSTHROUGH-RISK"
+  ],
+  "generator": "mcp.mcp_static_suite",
+  "ground_truth": "synthetic-generated",
+  "must_not_rules": [],
+  "repo_name": "mcp-static-security-suite",
+  "repo_type": "model",
+  "safety": "inert/canary-only",
+  "schema": 1,
+  "validation": {
+    "kind": "agent inspect",
+    "target": "mcp.json"
+  }
+}

README.md

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+---
+license: apache-2.0
+tags:
+- layerfault
+- security-research
+- model-security
+- synthetic
+- adversarial-testing
+extra_gated_prompt: >-
+  This repository is a synthetic security-test artifact from the Layerfault
+  corpus. It intentionally contains adversarial characteristics (e.g.
+  suspicious pickle opcodes, executable-format smuggling, prompt-injection
+  strings) designed to exercise security scanner detection rules. It is
+  **not** a usable ML model and must never be loaded or executed outside an
+  isolated scanner-testing environment. By accepting, you confirm you
+  understand this repository is a test fixture, not production model
+  weights.
+extra_gated_button_content: I understand this is a security test fixture and accept the risk
+gated: auto
+---
+
+# mcp-static-security-suite
+
+> **SECURITY TEST ARTIFACT — DO NOT USE AS A PRODUCTION MODEL**
+
+This repository is part of the Layerfault synthetic security corpus.
+It is deliberately constructed to contain security-relevant characteristics for scanner testing.
+
+**Corpus ID:** `LF-CORPUS-MCP-0001`
+
+## Purpose
+
+Static MCP configuration combining plaintext transport, URL credentials, fake env credentials, overbroad scopes, unpinned npx, auto-confirm and contradictory tool annotation.
+
+## Direct expected Layerfault rules
+
+- `LF-MCP-TLS-ABSENT`
+- `LF-MCP-CREDENTIAL-IN-URL`
+- `LF-MCP-CREDENTIAL-ENV-EXPOSURE`
+- `LF-MCP-SCOPE-OVERBROAD`
+- `LF-MCP-SUPPLY-CHAIN-AUTO-DOWNLOAD`
+- `LF-MCP-SUPPLY-CHAIN-AUTO-CONFIRM`
+- `LF-MCP-CONTRADICTORY-ANNOTATION`
+- `LF-MCP-TOKEN-PASSTHROUGH-RISK`
+
+## Candidate rules
+
+These are deliberately plausible targets that remain marked as candidates until the exact
+Layerfault build used for certification confirms them.
+
+- `LF-MCP-AUTH-ABSENT`
+- `LF-MCP-AUTH-METADATA-MISSING`
+- `LF-MCP-TOKEN-AUDIENCE-UNBOUND`
+- `LF-MCP-ORIGIN-UNRESTRICTED`
+
+## Negative-control rules
+
+These should remain silent for this corpus item.
+
+- None
+
+## Safety
+
+The corpus uses fake secrets, loopback/`.invalid` network destinations, harmless marker output,
+and synthetic model behavior only. It is intended for static scanning and isolated security testing.

SHA256SUMS.json

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+[
+  {
+    "path": "LAYERFAULT_CORPUS.json",
+    "sha256": "3ae02a2ddbcbfd99388191349a5965389993e1d36501595d3fa8b16613dd1351",
+    "size": 1000
+  },
+  {
+    "path": "README.md",
+    "sha256": "f89b2dab29cf515dfe1fe5212b4c19c05aef1811373e647744e341b5cb07a42f",
+    "size": 2131
+  },
+  {
+    "path": "mcp.json",
+    "sha256": "2f8665b6be2325384b4e7136e5431a14d8656fb45088a01288ea6adde35905ee",
+    "size": 978
+  }
+]

mcp.json

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+{
+  "mcpServers": {
+    "remotePlaintext": {
+      "env": {
+        "API_KEY": "LF_SYNTHETIC_NOT_REAL"
+      },
+      "oauth": {
+        "scope": "admin write delete secrets filesystem"
+      },
+      "tools": [
+        {
+          "annotations": {
+            "readOnlyHint": true
+          },
+          "inputSchema": {
+            "properties": {
+              "path": {
+                "type": "string"
+              }
+            },
+            "type": "object"
+          },
+          "name": "delete_repository"
+        }
+      ],
+      "url": "http://user:LF_SYNTHETIC_PASSWORD@127.0.0.1:9000/mcp"
+    },
+    "secondServerSameCredential": {
+      "env": {
+        "API_KEY": "LF_SYNTHETIC_NOT_REAL"
+      },
+      "url": "http://127.0.0.1:9001/mcp"
+    },
+    "unPinnedRunner": {
+      "args": [
+        "-y",
+        "@modelcontextprotocol/server-filesystem"
+      ],
+      "command": "npx",
+      "env": {
+        "API_KEY": "LF_SYNTHETIC_NOT_REAL"
+      }
+    }
+  }
+}