DSAIL

Save a ruleset under a name

dsail_save_ruleset

Keep a written policy's rules as a named, immutable revision, so a later check answers exactly as this one did.

Use when a handbook changes but earlier reviews must remain tied to the rules used then, or a team needs a name for a decided policy's formal rules.

Stores a named, immutable revision of a ruleset. Saving over an existing name links the previous hash as this revision's parent — nothing is ever edited in place. Scoped to the workspace in use: a ruleset saved here is reachable from any later conversation through the same connection, and from no other.

created is true when these exact bytes were stored for the first time, and false when an identical source had already been stored, by a compile or an earlier save. It says nothing about the name: the first save under a new name returns false if the same source was compiled before.

label (optional, inert): {domain: , topic: , confidence: high|medium|low}, or {declined: true}. Stored as vocabulary ids only.

Input Schema

TableJSON Schema

Name	Required	Description
`name`	Yes	The name to save under, in the current workspace. Saving over an existing name creates a new revision with the previous one as its parent; nothing is edited in place.
`label`	No	Optional application-domain label: `{"topic": "<a few words on what the policy governs>"}`, or `{"declined": true}`. Matched against the published vocabulary and then discarded; never stored on the ruleset. Omitting it leaves the ruleset unlabeled, which is normal.
`source`	Yes	The DSAIL source text to save, byte for byte as it compiled.
`parent_hash`	No	The hash of the revision this one supersedes, when editing a saved ruleset. Links the two so the review can show a diff; omit for a new ruleset.

Output Schema

TableJSON Schema

Name	Required	Description	Default
No arguments

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedSep 26, 2026

changedOutput schema / oneOf

Previous value: -[
-  {
-    "description": "The saved revision: its name, hash and parent.",
-    "properties": {
-      "name": {
-        "type": "string"
-      },
-      "ok": {
-        "const": true,
-        "type": "boolean"
-      },
-      "parent_hash": {
-        "type": [
-          "string",
-          "null"
-        ]
-      },
-      "ruleset_hash": {
-        "type": "string"
-      },
-      "versions": {
-        "description": "Which engine and which wire contract produced this response.",
-        "properties": {
-          "engine": {
-            "example": "dsail-core",
-            "type": "string"
-          },
-          "engine_version": {
-            "type": "string"
-          },
-          "language_version": {
-            "description": "DSAIL language version.",
-            "type": "string"
-          },
-          "service_version": {
-            "type": "string"
-          },
-          "supported_language_versions": {
-            "items": {
-              "type": "string"
-            },
-            "type": "array"
-          },
-          "wire_version": {
-            "type": "string"
-          }
-        },
-        "required": [
-          "engine",
-          "engine_version",
-          "language_version",
-          "service_version",
-          "wire_version"
-        ],
-        "type": "object"
-      }
-    },
-    "required": [
-      "ok"
-    ],
-    "type": "object"
-  },
-  {
-    "properties": {
-      "error": {
-        "properties": {
-          "actual": {
-            "description": "How much the request used, where that is known. Absent for solver_memory_mb: the solver stops at the limit.",
-            "type": "integer"
-          },
-          "budget": {
-            "type": "string"
-          },
-          "code": {
-            "enum": [
-              "VALIDATION_REJECTED",
-              "COMPILE_FAILED",
-              "BUDGET_EXCEEDED",
-              "RULESET_NOT_FOUND",
-              "ENGINE_ERROR",
-              "ENGINE_BUSY",
-              "BAD_REQUEST",
-              "CREDENTIAL_REQUIRED",
-              "CREDENTIAL_INVALID",
-              "CREDENTIAL_SCOPE",
-              "EVALUATION_LIMIT",
-              "ENTITLEMENT_EXCEEDED",
-              "TIER_UNAVAILABLE"
-            ],
-            "type": "string"
-          },
-          "diagnostics": {
-            "items": {
-              "properties": {
-                "line": {
-                  "type": [
-                    "integer",
-                    "null"
-                  ]
-                },
-                "message": {
-                  "type": "string"
-                },
-                "severity": {
-                  "enum": [
-                    "error",
-                    "warning"
-                  ],
-                  "type": "string"
-                }
-              },
-              "required": [
-                "severity",
-                "message"
-              ],
-              "type": "object"
-            },
-            "type": "array"
-          },
-          "docs": {
-            "description": "The docs-site page that resolves this code (markdown). Fetch it before retrying blind.",
-            "format": "uri",
-            "type": "string"
-          },
-          "failure_count": {
-            "description": "How many fields failed in total. Equal to the length of `failures` unless a very large rejection was truncated, which the message says.",
-            "type": "integer"
-          },
-          "failures": {
-            "description": "EVERY failing field, not the first one.",
-            "items": {
-              "properties": {
-                "expected": {
-                  "type": "string"
-                },
-                "field": {
-                  "type": "string"
-                },
-                "received": {
-                  "type": "string"
-                }
-              },
-              "required": [
-                "field",
-                "expected",
-                "received"
-              ],
-              "type": "object"
-            },
-            "type": "array"
-          },
-          "hint": {
-            "description": "The grammar guide, carried on compile failures so the next call can succeed without a human.",
-            "type": "string"
-          },
-          "limit": {
-            "type": "integer"
-          },
-          "message": {
-            "type": "string"
-          },
-          "retry_after_ms": {
-            "description": "ENGINE_BUSY only: when to retry. The REST door also sends it, in seconds, as Retry-After.",
-            "type": "integer"
-          }
-        },
-        "required": [
-          "code",
-          "message"
-        ],
-        "type": "object"
-      },
-      "ok": {
-        "const": false,
-        "type": "boolean"
-      },
-      "versions": {
-        "description": "Which engine and which wire contract produced this response.",
-        "properties": {
-          "engine": {
-            "example": "dsail-core",
-            "type": "string"
-          },
-          "engine_version": {
-            "type": "string"
-          },
-          "language_version": {
-            "description": "DSAIL language version.",
-            "type": "string"
-          },
-          "service_version": {
-            "type": "string"
-          },
-          "supported_language_versions": {
-            "items": {
-              "type": "string"
-            },
-            "type": "array"
-          },
-          "wire_version": {
-            "type": "string"
-          }
-        },
-        "required": [
-          "engine",
-          "engine_version",
-          "language_version",
-          "service_version",
-          "wire_version"
-        ],
-        "type": "object"
-      }
-    },
-    "required": [
-      "ok",
-      "error",
-      "versions"
-    ],
-    "type": "object"
-  }
-]New value: +[
+  {
+    "description": "The saved revision: its name, hash and parent.",
+    "properties": {
+      "created": {
+        "description": "True when these exact source bytes were stored for the first time; false when an identical source was already stored by a compile or an earlier save. Independent of whether the name is new.",
+        "type": "boolean"
+      },
+      "name": {
+        "type": "string"
+      },
+      "ok": {
+        "const": true,
+        "type": "boolean"
+      },
+      "parent_hash": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "ruleset_hash": {
+        "type": "string"
+      },
+      "versions": {
+        "description": "Which engine and which wire contract produced this response.",
+        "properties": {
+          "engine": {
+            "example": "dsail-core",
+            "type": "string"
+          },
+          "engine_version": {
+            "type": "string"
+          },
+          "language_version": {
+            "description": "DSAIL language version.",
+            "type": "string"
+          },
+          "service_version": {
+            "type": "string"
+          },
+          "supported_language_versions": {
+            "items": {
+              "type": "string"
+            },
+            "type": "array"
+          },
+          "wire_version": {
+            "type": "string"
+          }
+        },
+        "required": [
+          "engine",
+          "engine_version",
+          "language_version",
+          "service_version",
+          "wire_version"
+        ],
+        "type": "object"
+      }
+    },
+    "required": [
+      "ok"
+    ],
+    "type": "object"
+  },
+  {
+    "properties": {
+      "error": {
+        "properties": {
+          "actual": {
+            "description": "How much the request used, where that is known. Absent for solver_memory_mb: the solver stops at the limit.",
+            "type": "integer"
+          },
+          "budget": {
+            "type": "string"
+          },
+          "code": {
+            "enum": [
+              "VALIDATION_REJECTED",
+              "COMPILE_FAILED",
+              "BUDGET_EXCEEDED",
+              "RULESET_NOT_FOUND",
+              "ENGINE_ERROR",
+              "ENGINE_BUSY",
+              "BAD_REQUEST",
+              "CREDENTIAL_REQUIRED",
+              "CREDENTIAL_INVALID",
+              "CREDENTIAL_SCOPE",
+              "EVALUATION_LIMIT",
+              "ENTITLEMENT_EXCEEDED",
+              "TIER_UNAVAILABLE"
+            ],
+            "type": "string"
+          },
+          "diagnostics": {
+            "items": {
+              "properties": {
+                "line": {
+                  "type": [
+                    "integer",
+                    "null"
+                  ]
+                },
+                "message": {
+                  "type": "string"
+                },
+                "severity": {
+                  "enum": [
+                    "error",
+                    "warning"
+                  ],
+                  "type": "string"
+                }
+              },
+              "required": [
+                "severity",
+                "message"
+              ],
+              "type": "object"
+            },
+            "type": "array"
+          },
+          "docs": {
+            "description": "The docs-site page that resolves this code (markdown). Fetch it before retrying blind.",
+            "format": "uri",
+            "type": "string"
+          },
+          "failure_count": {
+            "description": "How many fields failed in total. Equal to the length of `failures` unless a very large rejection was truncated, which the message says.",
+            "type": "integer"
+          },
+          "failures": {
+            "description": "EVERY failing field, not the first one.",
+            "items": {
+              "properties": {
+                "expected": {
+                  "type": "string"
+                },
+                "field": {
+                  "type": "string"
+                },
+                "received": {
+                  "type": "string"
+                }
+              },
+              "required": [
+                "field",
+                "expected",
+                "received"
+              ],
+              "type": "object"
+            },
+            "type": "array"
+          },
+          "hint": {
+            "description": "The grammar guide, carried on compile failures so the next call can succeed without a human.",
+            "type": "string"
+          },
+          "limit": {
+            "type": "integer"
+          },
+          "message": {
+            "type": "string"
+          },
+          "retry_after_ms": {
+            "description": "ENGINE_BUSY only: when to retry. The REST door also sends it, in seconds, as Retry-After.",
+            "type": "integer"
+          }
+        },
+        "required": [
+          "code",
+          "message"
+        ],
+        "type": "object"
+      },
+      "ok": {
+        "const": false,
+        "type": "boolean"
+      },
+      "versions": {
+        "description": "Which engine and which wire contract produced this response.",
+        "properties": {
+          "engine": {
+            "example": "dsail-core",
+            "type": "string"
+          },
+          "engine_version": {
+            "type": "string"
+          },
+          "language_version": {
+            "description": "DSAIL language version.",
+            "type": "string"
+          },
+          "service_version": {
+            "type": "string"
+          },
+          "supported_language_versions": {
+            "items": {
+              "type": "string"
+            },
+            "type": "array"
+          },
+          "wire_version": {
+            "type": "string"
+          }
+        },
+        "required": [
+          "engine",
+          "engine_version",
+          "language_version",
+          "service_version",
+          "wire_version"
+        ],
+        "type": "object"
+      }
+    },
+    "required": [
+      "ok",
+      "error",
+      "versions"
+    ],
+    "type": "object"
+  }
+]

Changed1 schema field changedSep 25, 2026

changedOutput schema / oneOf

Previous value: -[
-  {
-    "description": "The saved revision: its name, hash and parent.",
-    "properties": {
-      "name": {
-        "type": "string"
-      },
-      "ok": {
-        "const": true,
-        "type": "boolean"
-      },
-      "parent_hash": {
-        "type": [
-          "string",
-          "null"
-        ]
-      },
-      "ruleset_hash": {
-        "type": "string"
-      },
-      "versions": {
-        "description": "Which engine and which wire contract produced this response.",
-        "properties": {
-          "engine": {
-            "example": "dsail-core",
-            "type": "string"
-          },
-          "engine_version": {
-            "type": "string"
-          },
-          "language_version": {
-            "description": "DSAIL language version.",
-            "type": "string"
-          },
-          "service_version": {
-            "type": "string"
-          },
-          "supported_language_versions": {
-            "items": {
-              "type": "string"
-            },
-            "type": "array"
-          },
-          "wire_version": {
-            "type": "string"
-          }
-        },
-        "required": [
-          "engine",
-          "engine_version",
-          "language_version",
-          "service_version",
-          "wire_version"
-        ],
-        "type": "object"
-      }
-    },
-    "required": [
-      "ok"
-    ],
-    "type": "object"
-  },
-  {
-    "properties": {
-      "error": {
-        "properties": {
-          "actual": {
-            "type": "integer"
-          },
-          "budget": {
-            "type": "string"
-          },
-          "code": {
-            "enum": [
-              "VALIDATION_REJECTED",
-              "COMPILE_FAILED",
-              "BUDGET_EXCEEDED",
-              "RULESET_NOT_FOUND",
-              "ENGINE_ERROR",
-              "BAD_REQUEST",
-              "CREDENTIAL_REQUIRED",
-              "CREDENTIAL_INVALID",
-              "CREDENTIAL_SCOPE",
-              "EVALUATION_LIMIT",
-              "ENTITLEMENT_EXCEEDED",
-              "TIER_UNAVAILABLE"
-            ],
-            "type": "string"
-          },
-          "diagnostics": {
-            "items": {
-              "properties": {
-                "line": {
-                  "type": [
-                    "integer",
-                    "null"
-                  ]
-                },
-                "message": {
-                  "type": "string"
-                },
-                "severity": {
-                  "enum": [
-                    "error",
-                    "warning"
-                  ],
-                  "type": "string"
-                }
-              },
-              "required": [
-                "severity",
-                "message"
-              ],
-              "type": "object"
-            },
-            "type": "array"
-          },
-          "docs": {
-            "description": "The docs-site page that resolves this code (markdown). Fetch it before retrying blind.",
-            "format": "uri",
-            "type": "string"
-          },
-          "failure_count": {
-            "description": "How many fields failed in total. Equal to the length of `failures` unless a very large rejection was truncated, which the message says.",
-            "type": "integer"
-          },
-          "failures": {
-            "description": "EVERY failing field, not the first one.",
-            "items": {
-              "properties": {
-                "expected": {
-                  "type": "string"
-                },
-                "field": {
-                  "type": "string"
-                },
-                "received": {
-                  "type": "string"
-                }
-              },
-              "required": [
-                "field",
-                "expected",
-                "received"
-              ],
-              "type": "object"
-            },
-            "type": "array"
-          },
-          "hint": {
-            "description": "The grammar guide, carried on compile failures so the next call can succeed without a human.",
-            "type": "string"
-          },
-          "limit": {
-            "type": "integer"
-          },
-          "message": {
-            "type": "string"
-          }
-        },
-        "required": [
-          "code",
-          "message"
-        ],
-        "type": "object"
-      },
-      "ok": {
-        "const": false,
-        "type": "boolean"
-      },
-      "versions": {
-        "description": "Which engine and which wire contract produced this response.",
-        "properties": {
-          "engine": {
-            "example": "dsail-core",
-            "type": "string"
-          },
-          "engine_version": {
-            "type": "string"
-          },
-          "language_version": {
-            "description": "DSAIL language version.",
-            "type": "string"
-          },
-          "service_version": {
-            "type": "string"
-          },
-          "supported_language_versions": {
-            "items": {
-              "type": "string"
-            },
-            "type": "array"
-          },
-          "wire_version": {
-            "type": "string"
-          }
-        },
-        "required": [
-          "engine",
-          "engine_version",
-          "language_version",
-          "service_version",
-          "wire_version"
-        ],
-        "type": "object"
-      }
-    },
-    "required": [
-      "ok",
-      "error",
-      "versions"
-    ],
-    "type": "object"
-  }
-]New value: +[
+  {
+    "description": "The saved revision: its name, hash and parent.",
+    "properties": {
+      "name": {
+        "type": "string"
+      },
+      "ok": {
+        "const": true,
+        "type": "boolean"
+      },
+      "parent_hash": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "ruleset_hash": {
+        "type": "string"
+      },
+      "versions": {
+        "description": "Which engine and which wire contract produced this response.",
+        "properties": {
+          "engine": {
+            "example": "dsail-core",
+            "type": "string"
+          },
+          "engine_version": {
+            "type": "string"
+          },
+          "language_version": {
+            "description": "DSAIL language version.",
+            "type": "string"
+          },
+          "service_version": {
+            "type": "string"
+          },
+          "supported_language_versions": {
+            "items": {
+              "type": "string"
+            },
+            "type": "array"
+          },
+          "wire_version": {
+            "type": "string"
+          }
+        },
+        "required": [
+          "engine",
+          "engine_version",
+          "language_version",
+          "service_version",
+          "wire_version"
+        ],
+        "type": "object"
+      }
+    },
+    "required": [
+      "ok"
+    ],
+    "type": "object"
+  },
+  {
+    "properties": {
+      "error": {
+        "properties": {
+          "actual": {
+            "description": "How much the request used, where that is known. Absent for solver_memory_mb: the solver stops at the limit.",
+            "type": "integer"
+          },
+          "budget": {
+            "type": "string"
+          },
+          "code": {
+            "enum": [
+              "VALIDATION_REJECTED",
+              "COMPILE_FAILED",
+              "BUDGET_EXCEEDED",
+              "RULESET_NOT_FOUND",
+              "ENGINE_ERROR",
+              "ENGINE_BUSY",
+              "BAD_REQUEST",
+              "CREDENTIAL_REQUIRED",
+              "CREDENTIAL_INVALID",
+              "CREDENTIAL_SCOPE",
+              "EVALUATION_LIMIT",
+              "ENTITLEMENT_EXCEEDED",
+              "TIER_UNAVAILABLE"
+            ],
+            "type": "string"
+          },
+          "diagnostics": {
+            "items": {
+              "properties": {
+                "line": {
+                  "type": [
+                    "integer",
+                    "null"
+                  ]
+                },
+                "message": {
+                  "type": "string"
+                },
+                "severity": {
+                  "enum": [
+                    "error",
+                    "warning"
+                  ],
+                  "type": "string"
+                }
+              },
+              "required": [
+                "severity",
+                "message"
+              ],
+              "type": "object"
+            },
+            "type": "array"
+          },
+          "docs": {
+            "description": "The docs-site page that resolves this code (markdown). Fetch it before retrying blind.",
+            "format": "uri",
+            "type": "string"
+          },
+          "failure_count": {
+            "description": "How many fields failed in total. Equal to the length of `failures` unless a very large rejection was truncated, which the message says.",
+            "type": "integer"
+          },
+          "failures": {
+            "description": "EVERY failing field, not the first one.",
+            "items": {
+              "properties": {
+                "expected": {
+                  "type": "string"
+                },
+                "field": {
+                  "type": "string"
+                },
+                "received": {
+                  "type": "string"
+                }
+              },
+              "required": [
+                "field",
+                "expected",
+                "received"
+              ],
+              "type": "object"
+            },
+            "type": "array"
+          },
+          "hint": {
+            "description": "The grammar guide, carried on compile failures so the next call can succeed without a human.",
+            "type": "string"
+          },
+          "limit": {
+            "type": "integer"
+          },
+          "message": {
+            "type": "string"
+          },
+          "retry_after_ms": {
+            "description": "ENGINE_BUSY only: when to retry. The REST door also sends it, in seconds, as Retry-After.",
+            "type": "integer"
+          }
+        },
+        "required": [
+          "code",
+          "message"
+        ],
+        "type": "object"
+      },
+      "ok": {
+        "const": false,
+        "type": "boolean"
+      },
+      "versions": {
+        "description": "Which engine and which wire contract produced this response.",
+        "properties": {
+          "engine": {
+            "example": "dsail-core",
+            "type": "string"
+          },
+          "engine_version": {
+            "type": "string"
+          },
+          "language_version": {
+            "description": "DSAIL language version.",
+            "type": "string"
+          },
+          "service_version": {
+            "type": "string"
+          },
+          "supported_language_versions": {
+            "items": {
+              "type": "string"
+            },
+            "type": "array"
+          },
+          "wire_version": {
+            "type": "string"
+          }
+        },
+        "required": [
+          "engine",
+          "engine_version",
+          "language_version",
+          "service_version",
+          "wire_version"
+        ],
+        "type": "object"
+      }
+    },
+    "required": [
+      "ok",
+      "error",
+      "versions"
+    ],
+    "type": "object"
+  }
+]

Changed5 schema fields changedSep 21, 2026

addedInput schema / properties / label / description

Added value: +"Optional application-domain label: `{\"topic\": \"<a few words on what the policy governs>\"}`, or `{\"declined\": true}`. Matched against the published vocabulary and then discarded; never stored on the ruleset. Omitting it leaves the ruleset unlabeled, which is normal."

addedInput schema / properties / name / description

Added value: +"The name to save under, in the current workspace. Saving over an existing name creates a new revision with the previous one as its parent; nothing is edited in place."

addedInput schema / properties / parent_hash / description

Added value: +"The hash of the revision this one supersedes, when editing a saved ruleset. Links the two so the review can show a diff; omit for a new ruleset."

addedInput schema / properties / source / description

Added value: +"The DSAIL source text to save, byte for byte as it compiled."

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "description": "The saved revision. On failure `ok` is false and `error` carries `code`, `message` and `docs`, the URL of the page that resolves it.",
+  "oneOf": [
+    {
+      "description": "The saved revision: its name, hash and parent.",
+      "properties": {
+        "name": {
+          "type": "string"
+        },
+        "ok": {
+          "const": true,
+          "type": "boolean"
+        },
+        "parent_hash": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "ruleset_hash": {
+          "type": "string"
+        },
+        "versions": {
+          "description": "Which engine and which wire contract produced this response.",
+          "properties": {
+            "engine": {
+              "example": "dsail-core",
+              "type": "string"
+            },
+            "engine_version": {
+              "type": "string"
+            },
+            "language_version": {
+              "description": "DSAIL language version.",
+              "type": "string"
+            },
+            "service_version": {
+              "type": "string"
+            },
+            "supported_language_versions": {
+              "items": {
+                "type": "string"
+              },
+              "type": "array"
+            },
+            "wire_version": {
+              "type": "string"
+            }
+          },
+          "required": [
+            "engine",
+            "engine_version",
+            "language_version",
+            "service_version",
+            "wire_version"
+          ],
+          "type": "object"
+        }
+      },
+      "required": [
+        "ok"
+      ],
+      "type": "object"
+    },
+    {
+      "properties": {
+        "error": {
+          "properties": {
+            "actual": {
+              "type": "integer"
+            },
+            "budget": {
+              "type": "string"
+            },
+            "code": {
+              "enum": [
+                "VALIDATION_REJECTED",
+                "COMPILE_FAILED",
+                "BUDGET_EXCEEDED",
+                "RULESET_NOT_FOUND",
+                "ENGINE_ERROR",
+                "BAD_REQUEST",
+                "CREDENTIAL_REQUIRED",
+                "CREDENTIAL_INVALID",
+                "CREDENTIAL_SCOPE",
+                "EVALUATION_LIMIT",
+                "ENTITLEMENT_EXCEEDED",
+                "TIER_UNAVAILABLE"
+              ],
+              "type": "string"
+            },
+            "diagnostics": {
+              "items": {
+                "properties": {
+                  "line": {
+                    "type": [
+                      "integer",
+                      "null"
+                    ]
+                  },
+                  "message": {
+                    "type": "string"
+                  },
+                  "severity": {
+                    "enum": [
+                      "error",
+                      "warning"
+                    ],
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "severity",
+                  "message"
+                ],
+                "type": "object"
+              },
+              "type": "array"
+            },
+            "docs": {
+              "description": "The docs-site page that resolves this code (markdown). Fetch it before retrying blind.",
+              "format": "uri",
+              "type": "string"
+            },
+            "failure_count": {
+              "description": "How many fields failed in total. Equal to the length of `failures` unless a very large rejection was truncated, which the message says.",
+              "type": "integer"
+            },
+            "failures": {
+              "description": "EVERY failing field, not the first one.",
+              "items": {
+                "properties": {
+                  "expected": {
+                    "type": "string"
+                  },
+                  "field": {
+                    "type": "string"
+                  },
+                  "received": {
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "field",
+                  "expected",
+                  "received"
+                ],
+                "type": "object"
+              },
+              "type": "array"
+            },
+            "hint": {
+              "description": "The grammar guide, carried on compile failures so the next call can succeed without a human.",
+              "type": "string"
+            },
+            "limit": {
+              "type": "integer"
+            },
+            "message": {
+              "type": "string"
+            }
+          },
+          "required": [
+            "code",
+            "message"
+          ],
+          "type": "object"
+        },
+        "ok": {
+          "const": false,
+          "type": "boolean"
+        },
+        "versions": {
+          "description": "Which engine and which wire contract produced this response.",
+          "properties": {
+            "engine": {
+              "example": "dsail-core",
+              "type": "string"
+            },
+            "engine_version": {
+              "type": "string"
+            },
+            "language_version": {
+              "description": "DSAIL language version.",
+              "type": "string"
+            },
+            "service_version": {
+              "type": "string"
+            },
+            "supported_language_versions": {
+              "items": {
+                "type": "string"
+              },
+              "type": "array"
+            },
+            "wire_version": {
+              "type": "string"
+            }
+          },
+          "required": [
+            "engine",
+            "engine_version",
+            "language_version",
+            "service_version",
+            "wire_version"
+          ],
+          "type": "object"
+        }
+      },
+      "required": [
+        "ok",
+        "error",
+        "versions"
+      ],
+      "type": "object"
+    }
+  ],
+  "type": "object"
+}

First observedSep 20, 2026

TDQS

A4.4/5.0

Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

The description discloses key behavioral traits beyond annotations: it explains that the operation creates an immutable revision, links parent hashes, never edits in place, is scoped to the workspace, and explains the exact semantics of the `created` flag. This is far more than the annotations (which only indicate readOnly=false, destructive=false) and gives the agent a precise model of the tool's side effects and return value.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is organized into clear paragraphs, starting with purpose and usage, then behavioral details, then `created` semantics, then label details. It is longer than a one-liner but every paragraph serves a distinct function and contains necessary information. The structure is logical and front-loaded with the most important information.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool's complexity (immutability, revision chaining, workspace scoping, label semantics) and the presence of a detailed output schema (visible via the `created` flag explanation), the description is complete. It covers the core behavior, the meaning of the `created` return value, scoping rules, and edge cases like saving over an existing name, which an agent needs to call it correctly.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The input schema has 100% description coverage, with each parameter already well-explained (e.g., `name` details revision chaining, `label` explains matching and discarding). The description adds context about the `created` flag but does not add meaning for the parameters beyond what the schema already provides. Since the schema does the heavy lifting, a baseline score of 3 is appropriate.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description states a specific action (saving a ruleset as a named, immutable revision) and clarifies that it does not edit in place, distinguishing it from other operations like copying or loading. The purpose is further explained with the 'keep a written policy's rules as a named revision' phrase, making it clear what the tool is for and how it relates to sibling tools.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description explicitly provides a 'Use when' clause, giving clear conditions for when to invoke the tool: when a handbook changes but earlier reviews must remain tied to the rules used then, or when a team needs a name for a decided policy's formal rules. It does not mention alternatives or exclusions, so it stops short of a full 5, but the guidance is clear and practical.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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