ontology-atlas

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add_relation

Idempotent

Add a semantic relation between two ontology nodes, choosing the relation type to store the edge in the correct frontmatter key. Optionally pass an expected mtime to detect concurrent edits, and include a rationale for depends_on edges.

Instructions

Add a semantic relation between two nodes. Appends to the matching frontmatter graph key (domains / capabilities / elements / dependencies / relates / contains / describes); domain sets the source node's inline parent domain. The relation type picks which key receives the entry. A new depends_on relation requires a nonblank why; an already-existing edge remains an idempotent read even if legacy data has no rationale. R11: optional expected_mtime — pass the source-side mtime from a prior get_concept so concurrent external edits throw VaultConflictError. Invalid relation type is rejected before endpoint slug resolution with a closest-value hint and structured valueName / receivedValue / suggestion / allowedValues repair fields in structuredContent, with no changed, alreadyExists, or postWriteMaintenance write metadata. Changed writes return compact postWriteMaintenance (maintenance_plan) with count-safe byPhase / bySeverity / byKind queue buckets, action score, executable proposedAction, and current-page nextExecutableAction / nextReviewAction pointers so agents can immediately see graph cleanup / relation suggestions after the edge lands. For multiple already-approved semantic edges use add_relations({relations: [...]}) (batch, idempotent, max 50). infer_imports.moduleEdges require exact-evidence review, a semantic rationale, and human approval first.

Input Schema

TableJSON Schema

Name	Required	Description
`to`	Yes	Target slug.
`why`	No	One-line rationale for this relation ("A leans on B because ..."). Stored in the SAME frontmatter write as the ref (relation_notes map) — write it whenever you know the reason; a graph edge without a why is a mind-map line, not an ontology claim.
`from`	Yes	Source slug.
`type`	Yes	Relation type.
`expected_mtime`	No	Optional conflict guard for the source slug. If the source mtimeMs differs at write time, the call throws.

Output Schema

TableJSON Schema

Name	Required	Description
`ok`	Yes
`to`	Yes
`key`	No
`from`	Yes
`type`	Yes
`changed`	No
`alreadyExists`	No
`postWriteMaintenance`	No	Compact maintenance_plan summary for post-write follow-up. Bucket maps describe the remaining queue after the write.

Schema Changelog

Changes observed during successful MCP inspections.

Changed4 schema fields changedv1.3.0Sep 23, 2026

changedOutput schema / properties / postWriteMaintenance / properties / actions / items / properties / kind / enum

Previous value: -[
-  "inspect_compile_issue",
-  "break_dependency_cycle",
-  "canonicalize_graph_arrays",
-  "resolve_dangling_reference",
-  "add_missing_relation",
-  "materialize_external_element",
-  "unassigned_node",
-  "empty_domain",
-  "separate_evidence_from_concept",
-  "fold_bulk_siblings",
-  "retire_unearned_node",
-  "capability_without_evidence",
-  "rejudge_summary_membership"
-]New value: +[
+  "inspect_compile_issue",
+  "break_dependency_cycle",
+  "canonicalize_graph_arrays",
+  "resolve_dangling_reference",
+  "add_missing_relation",
+  "materialize_external_element",
+  "unassigned_node",
+  "empty_domain",
+  "separate_evidence_from_concept",
+  "fold_bulk_siblings",
+  "retire_unearned_node",
+  "capability_without_evidence",
+  "rejudge_summary_membership",
+  "definition_missing",
+  "boundary_missing",
+  "epistemic_exclusion",
+  "folder_only_evidence",
+  "slug_outside_kind_folder",
+  "uncertainty_missing",
+  "retire_starter_example"
+]

changedOutput schema / properties / postWriteMaintenance / properties / filters / properties / kinds / items / enum

Previous value: -[
-  "inspect_compile_issue",
-  "break_dependency_cycle",
-  "canonicalize_graph_arrays",
-  "resolve_dangling_reference",
-  "add_missing_relation",
-  "materialize_external_element",
-  "unassigned_node",
-  "empty_domain",
-  "separate_evidence_from_concept",
-  "fold_bulk_siblings",
-  "retire_unearned_node",
-  "capability_without_evidence",
-  "rejudge_summary_membership"
-]New value: +[
+  "inspect_compile_issue",
+  "break_dependency_cycle",
+  "canonicalize_graph_arrays",
+  "resolve_dangling_reference",
+  "add_missing_relation",
+  "materialize_external_element",
+  "unassigned_node",
+  "empty_domain",
+  "separate_evidence_from_concept",
+  "fold_bulk_siblings",
+  "retire_unearned_node",
+  "capability_without_evidence",
+  "rejudge_summary_membership",
+  "definition_missing",
+  "boundary_missing",
+  "epistemic_exclusion",
+  "folder_only_evidence",
+  "slug_outside_kind_folder",
+  "uncertainty_missing",
+  "retire_starter_example"
+]

changedOutput schema / properties / postWriteMaintenance / properties / nextExecutableAction / properties / kind / enum

Previous value: -[
-  "inspect_compile_issue",
-  "break_dependency_cycle",
-  "canonicalize_graph_arrays",
-  "resolve_dangling_reference",
-  "add_missing_relation",
-  "materialize_external_element",
-  "unassigned_node",
-  "empty_domain",
-  "separate_evidence_from_concept",
-  "fold_bulk_siblings",
-  "retire_unearned_node",
-  "capability_without_evidence",
-  "rejudge_summary_membership"
-]New value: +[
+  "inspect_compile_issue",
+  "break_dependency_cycle",
+  "canonicalize_graph_arrays",
+  "resolve_dangling_reference",
+  "add_missing_relation",
+  "materialize_external_element",
+  "unassigned_node",
+  "empty_domain",
+  "separate_evidence_from_concept",
+  "fold_bulk_siblings",
+  "retire_unearned_node",
+  "capability_without_evidence",
+  "rejudge_summary_membership",
+  "definition_missing",
+  "boundary_missing",
+  "epistemic_exclusion",
+  "folder_only_evidence",
+  "slug_outside_kind_folder",
+  "uncertainty_missing",
+  "retire_starter_example"
+]

changedOutput schema / properties / postWriteMaintenance / properties / nextReviewAction / properties / kind / enum

Previous value: -[
-  "inspect_compile_issue",
-  "break_dependency_cycle",
-  "canonicalize_graph_arrays",
-  "resolve_dangling_reference",
-  "add_missing_relation",
-  "materialize_external_element",
-  "unassigned_node",
-  "empty_domain",
-  "separate_evidence_from_concept",
-  "fold_bulk_siblings",
-  "retire_unearned_node",
-  "capability_without_evidence",
-  "rejudge_summary_membership"
-]New value: +[
+  "inspect_compile_issue",
+  "break_dependency_cycle",
+  "canonicalize_graph_arrays",
+  "resolve_dangling_reference",
+  "add_missing_relation",
+  "materialize_external_element",
+  "unassigned_node",
+  "empty_domain",
+  "separate_evidence_from_concept",
+  "fold_bulk_siblings",
+  "retire_unearned_node",
+  "capability_without_evidence",
+  "rejudge_summary_membership",
+  "definition_missing",
+  "boundary_missing",
+  "epistemic_exclusion",
+  "folder_only_evidence",
+  "slug_outside_kind_folder",
+  "uncertainty_missing",
+  "retire_starter_example"
+]

Changed8 schema fields changedv1.2.5Sep 15, 2026

addedOutput schema / properties / postWriteMaintenance / properties / actions / items / allOf

Added value: +[
+  {
+    "if": {
+      "properties": {
+        "executable": {
+          "const": true
+        }
+      },
+      "required": [
+        "executable"
+      ]
+    },
+    "then": {
+      "properties": {
+        "proposedAction": {
+          "additionalProperties": false,
+          "properties": {
+            "args": {
+              "oneOf": [
+                {
+                  "additionalProperties": false,
+                  "properties": {
+                    "kind": {
+                      "enum": [
+                        "project",
+                        "domain",
+                        "capability",
+                        "element",
+                        "document",
+                        "vault-readme"
+                      ],
+                      "minLength": 1,
+                      "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                      "type": "string"
+                    },
+                    "slug": {
+                      "minLength": 1,
+                      "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                      "type": "string"
+                    },
+                    "title": {
+                      "minLength": 1,
+                      "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                      "type": "string"
+                    }
+                  },
+                  "required": [
+                    "slug",
+                    "kind",
+                    "title"
+                  ],
+                  "type": "object"
+                },
+                {
+                  "additionalProperties": false,
+                  "properties": {
+                    "from": {
+                      "minLength": 1,
+                      "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                      "type": "string"
+                    },
+                    "to": {
+                      "minLength": 1,
+                      "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                      "type": "string"
+                    },
+                    "type": {
+                      "enum": [
+                        "depends_on",
+                        "relates",
+                        "contains",
+                        "describes",
+                        "domains",
+                        "capabilities",
+                        "elements",
+                        "domain"
+                      ],
+                      "minLength": 1,
+                      "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                      "type": "string"
+                    },
+                    "why": {
+                      "description": "One-line rationale for this relation (\"A leans on B because ...\"). Stored in the SAME frontmatter write as the ref (relation_notes map) — write it whenever you know the reason; a graph edge without a why is a mind-map line, not an ontology claim.",
+                      "maxLength": 300,
+                      "type": "string"
+                    }
+                  },
+                  "required": [
+                    "from",
+                    "to",
+                    "type"
+                  ],
+                  "type": "object"
+                },
+                {
+                  "additionalProperties": false,
+                  "properties": {
+                    "expected_mtime": {
+                      "minimum": 0,
+                      "type": "number"
+                    },
+                    "frontmatter": {
+                      "additionalProperties": false,
+                      "properties": {
+                        "broader": {
+                          "items": {
+                            "minLength": 1,
+                            "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                            "type": "string"
+                          },
+                          "maxItems": 500,
+                          "type": "array"
+                        },
+                        "capabilities": {
+                          "items": {
+                            "minLength": 1,
+                            "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                            "type": "string"
+                          },
+                          "maxItems": 500,
+                          "type": "array"
+                        },
+                        "contains": {
+                          "items": {
+                            "minLength": 1,
+                            "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                            "type": "string"
+                          },
+                          "maxItems": 500,
+                          "type": "array"
+                        },
+                        "dependencies": {
+                          "items": {
+                            "minLength": 1,
+                            "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                            "type": "string"
+                          },
+                          "maxItems": 500,
+                          "type": "array"
+                        },
+                        "depends_on": {
+                          "items": {
+                            "minLength": 1,
+                            "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                            "type": "string"
+                          },
+                          "maxItems": 500,
+                          "type": "array"
+                        },
+                        "describes": {
+                          "items": {
+                            "minLength": 1,
+                            "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                            "type": "string"
+                          },
+                          "maxItems": 500,
+                          "type": "array"
+                        },
+                        "domains": {
+                          "items": {
+                            "minLength": 1,
+                            "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                            "type": "string"
+                          },
+                          "maxItems": 500,
+                          "type": "array"
+                        },
+                        "elements": {
+                          "items": {
+                            "minLength": 1,
+                            "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                            "type": "string"
+                          },
+                          "maxItems": 500,
+                          "type": "array"
+                        },
+                        "relates": {
+                          "items": {
+                            "minLength": 1,
+                            "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                            "type": "string"
+                          },
+                          "maxItems": 500,
+                          "type": "array"
+                        }
+                      },
+                      "type": "object"
+                    },
+                    "slug": {
+                      "minLength": 1,
+                      "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                      "type": "string"
+                    }
+                  },
+                  "required": [
+                    "slug",
+                    "frontmatter",
+                    "expected_mtime"
+                  ],
+                  "type": "object"
+                }
+              ]
+            },
+            "tool": {
+              "enum": [
+                "add_concept",
+                "add_relation",
+                "patch_concept"
+              ],
+              "minLength": 1,
+              "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+              "type": "string"
+            }
+          },
+          "required": [
+            "tool",
+            "args"
+          ],
+          "type": "object"
+        }
+      },
+      "required": [
+        "proposedAction"
+      ]
+    }
+  }
+]

changedOutput schema / properties / postWriteMaintenance / properties / actions / items / required

Previous value: -[
-  "id",
-  "phase",
-  "kind",
-  "severity",
-  "score",
-  "executable",
-  "reason",
-  "proposedAction"
-]New value: +[
+  "id",
+  "phase",
+  "kind",
+  "severity",
+  "score",
+  "executable",
+  "reason"
+]

addedOutput schema / properties / postWriteMaintenance / properties / nextExecutableAction / allOf

Added value: +[
+  {
+    "if": {
+      "properties": {
+        "executable": {
+          "const": true
+        }
+      },
+      "required": [
+        "executable"
+      ]
+    },
+    "then": {
+      "properties": {
+        "proposedAction": {
+          "additionalProperties": false,
+          "properties": {
+            "args": {
+              "oneOf": [
+                {
+                  "additionalProperties": false,
+                  "properties": {
+                    "kind": {
+                      "enum": [
+                        "project",
+                        "domain",
+                        "capability",
+                        "element",
+                        "document",
+                        "vault-readme"
+                      ],
+                      "minLength": 1,
+                      "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                      "type": "string"
+                    },
+                    "slug": {
+                      "minLength": 1,
+                      "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                      "type": "string"
+                    },
+                    "title": {
+                      "minLength": 1,
+                      "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                      "type": "string"
+                    }
+                  },
+                  "required": [
+                    "slug",
+                    "kind",
+                    "title"
+                  ],
+                  "type": "object"
+                },
+                {
+                  "additionalProperties": false,
+                  "properties": {
+                    "from": {
+                      "minLength": 1,
+                      "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                      "type": "string"
+                    },
+                    "to": {
+                      "minLength": 1,
+                      "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                      "type": "string"
+                    },
+                    "type": {
+                      "enum": [
+                        "depends_on",
+                        "relates",
+                        "contains",
+                        "describes",
+                        "domains",
+                        "capabilities",
+                        "elements",
+                        "domain"
+                      ],
+                      "minLength": 1,
+                      "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                      "type": "string"
+                    },
+                    "why": {
+                      "description": "One-line rationale for this relation (\"A leans on B because ...\"). Stored in the SAME frontmatter write as the ref (relation_notes map) — write it whenever you know the reason; a graph edge without a why is a mind-map line, not an ontology claim.",
+                      "maxLength": 300,
+                      "type": "string"
+                    }
+                  },
+                  "required": [
+                    "from",
+                    "to",
+                    "type"
+                  ],
+                  "type": "object"
+                },
+                {
+                  "additionalProperties": false,
+                  "properties": {
+                    "expected_mtime": {
+                      "minimum": 0,
+                      "type": "number"
+                    },
+                    "frontmatter": {
+                      "additionalProperties": false,
+                      "properties": {
+                        "broader": {
+                          "items": {
+                            "minLength": 1,
+                            "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                            "type": "string"
+                          },
+                          "maxItems": 500,
+                          "type": "array"
+                        },
+                        "capabilities": {
+                          "items": {
+                            "minLength": 1,
+                            "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                            "type": "string"
+                          },
+                          "maxItems": 500,
+                          "type": "array"
+                        },
+                        "contains": {
+                          "items": {
+                            "minLength": 1,
+                            "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                            "type": "string"
+                          },
+                          "maxItems": 500,
+                          "type": "array"
+                        },
+                        "dependencies": {
+                          "items": {
+                            "minLength": 1,
+                            "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                            "type": "string"
+                          },
+                          "maxItems": 500,
+                          "type": "array"
+                        },
+                        "depends_on": {
+                          "items": {
+                            "minLength": 1,
+                            "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                            "type": "string"
+                          },
+                          "maxItems": 500,
+                          "type": "array"
+                        },
+                        "describes": {
+                          "items": {
+                            "minLength": 1,
+                            "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                            "type": "string"
+                          },
+                          "maxItems": 500,
+                          "type": "array"
+                        },
+                        "domains": {
+                          "items": {
+                            "minLength": 1,
+                            "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                            "type": "string"
+                          },
+                          "maxItems": 500,
+                          "type": "array"
+                        },
+                        "elements": {
+                          "items": {
+                            "minLength": 1,
+                            "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                            "type": "string"
+                          },
+                          "maxItems": 500,
+                          "type": "array"
+                        },
+                        "relates": {
+                          "items": {
+                            "minLength": 1,
+                            "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                            "type": "string"
+                          },
+                          "maxItems": 500,
+                          "type": "array"
+                        }
+                      },
+                      "type": "object"
+                    },
+                    "slug": {
+                      "minLength": 1,
+                      "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                      "type": "string"
+                    }
+                  },
+                  "required": [
+                    "slug",
+                    "frontmatter",
+                    "expected_mtime"
+                  ],
+                  "type": "object"
+                }
+              ]
+            },
+            "tool": {
+              "enum": [
+                "add_concept",
+                "add_relation",
+                "patch_concept"
+              ],
+              "minLength": 1,
+              "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+              "type": "string"
+            }
+          },
+          "required": [
+            "tool",
+            "args"
+          ],
+          "type": "object"
+        }
+      },
+      "required": [
+        "proposedAction"
+      ]
+    }
+  }
+]

changedOutput schema / properties / postWriteMaintenance / properties / nextExecutableAction / required

Previous value: -[
-  "id",
-  "phase",
-  "kind",
-  "severity",
-  "score",
-  "executable",
-  "reason",
-  "proposedAction"
-]New value: +[
+  "id",
+  "phase",
+  "kind",
+  "severity",
+  "score",
+  "executable",
+  "reason"
+]

addedOutput schema / properties / postWriteMaintenance / properties / nextReviewAction / allOf

Added value: +[
+  {
+    "if": {
+      "properties": {
+        "executable": {
+          "const": true
+        }
+      },
+      "required": [
+        "executable"
+      ]
+    },
+    "then": {
+      "properties": {
+        "proposedAction": {
+          "additionalProperties": false,
+          "properties": {
+            "args": {
+              "oneOf": [
+                {
+                  "additionalProperties": false,
+                  "properties": {
+                    "kind": {
+                      "enum": [
+                        "project",
+                        "domain",
+                        "capability",
+                        "element",
+                        "document",
+                        "vault-readme"
+                      ],
+                      "minLength": 1,
+                      "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                      "type": "string"
+                    },
+                    "slug": {
+                      "minLength": 1,
+                      "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                      "type": "string"
+                    },
+                    "title": {
+                      "minLength": 1,
+                      "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                      "type": "string"
+                    }
+                  },
+                  "required": [
+                    "slug",
+                    "kind",
+                    "title"
+                  ],
+                  "type": "object"
+                },
+                {
+                  "additionalProperties": false,
+                  "properties": {
+                    "from": {
+                      "minLength": 1,
+                      "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                      "type": "string"
+                    },
+                    "to": {
+                      "minLength": 1,
+                      "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                      "type": "string"
+                    },
+                    "type": {
+                      "enum": [
+                        "depends_on",
+                        "relates",
+                        "contains",
+                        "describes",
+                        "domains",
+                        "capabilities",
+                        "elements",
+                        "domain"
+                      ],
+                      "minLength": 1,
+                      "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                      "type": "string"
+                    },
+                    "why": {
+                      "description": "One-line rationale for this relation (\"A leans on B because ...\"). Stored in the SAME frontmatter write as the ref (relation_notes map) — write it whenever you know the reason; a graph edge without a why is a mind-map line, not an ontology claim.",
+                      "maxLength": 300,
+                      "type": "string"
+                    }
+                  },
+                  "required": [
+                    "from",
+                    "to",
+                    "type"
+                  ],
+                  "type": "object"
+                },
+                {
+                  "additionalProperties": false,
+                  "properties": {
+                    "expected_mtime": {
+                      "minimum": 0,
+                      "type": "number"
+                    },
+                    "frontmatter": {
+                      "additionalProperties": false,
+                      "properties": {
+                        "broader": {
+                          "items": {
+                            "minLength": 1,
+                            "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                            "type": "string"
+                          },
+                          "maxItems": 500,
+                          "type": "array"
+                        },
+                        "capabilities": {
+                          "items": {
+                            "minLength": 1,
+                            "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                            "type": "string"
+                          },
+                          "maxItems": 500,
+                          "type": "array"
+                        },
+                        "contains": {
+                          "items": {
+                            "minLength": 1,
+                            "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                            "type": "string"
+                          },
+                          "maxItems": 500,
+                          "type": "array"
+                        },
+                        "dependencies": {
+                          "items": {
+                            "minLength": 1,
+                            "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                            "type": "string"
+                          },
+                          "maxItems": 500,
+                          "type": "array"
+                        },
+                        "depends_on": {
+                          "items": {
+                            "minLength": 1,
+                            "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                            "type": "string"
+                          },
+                          "maxItems": 500,
+                          "type": "array"
+                        },
+                        "describes": {
+                          "items": {
+                            "minLength": 1,
+                            "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                            "type": "string"
+                          },
+                          "maxItems": 500,
+                          "type": "array"
+                        },
+                        "domains": {
+                          "items": {
+                            "minLength": 1,
+                            "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                            "type": "string"
+                          },
+                          "maxItems": 500,
+                          "type": "array"
+                        },
+                        "elements": {
+                          "items": {
+                            "minLength": 1,
+                            "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                            "type": "string"
+                          },
+                          "maxItems": 500,
+                          "type": "array"
+                        },
+                        "relates": {
+                          "items": {
+                            "minLength": 1,
+                            "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                            "type": "string"
+                          },
+                          "maxItems": 500,
+                          "type": "array"
+                        }
+                      },
+                      "type": "object"
+                    },
+                    "slug": {
+                      "minLength": 1,
+                      "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+                      "type": "string"
+                    }
+                  },
+                  "required": [
+                    "slug",
+                    "frontmatter",
+                    "expected_mtime"
+                  ],
+                  "type": "object"
+                }
+              ]
+            },
+            "tool": {
+              "enum": [
+                "add_concept",
+                "add_relation",
+                "patch_concept"
+              ],
+              "minLength": 1,
+              "pattern": "^(?!\\s)(?!.*\\s$)(?!.*\\u0000).+$",
+              "type": "string"
+            }
+          },
+          "required": [
+            "tool",
+            "args"
+          ],
+          "type": "object"
+        }
+      },
+      "required": [
+        "proposedAction"
+      ]
+    }
+  }
+]

changedOutput schema / properties / postWriteMaintenance / properties / nextReviewAction / required

Previous value: -[
-  "id",
-  "phase",
-  "kind",
-  "severity",
-  "score",
-  "executable",
-  "reason",
-  "proposedAction"
-]New value: +[
+  "id",
+  "phase",
+  "kind",
+  "severity",
+  "score",
+  "executable",
+  "reason"
+]

addedOutput schema / properties / postWriteMaintenance / properties / summary / properties / capabilitiesWithoutEvidence
```
Added value: +{
+  "minimum": 0,
+  "type": "integer"
+}
```

changedOutput schema / properties / postWriteMaintenance / properties / summary / required

Previous value: -[
-  "totalActions",
-  "filteredActions",
-  "remainingActions",
-  "executableActions",
-  "reviewActions",
-  "compileIssues",
-  "dependencyCycles",
-  "canonicalizationActions",
-  "danglingReferences",
-  "relationRecommendations",
-  "externalElementRefs",
-  "externalElementRefsIgnored",
-  "unassignedNodes",
-  "emptyDomains"
-]New value: +[
+  "totalActions",
+  "filteredActions",
+  "remainingActions",
+  "executableActions",
+  "reviewActions",
+  "compileIssues",
+  "dependencyCycles",
+  "canonicalizationActions",
+  "danglingReferences",
+  "relationRecommendations",
+  "externalElementRefs",
+  "externalElementRefsIgnored",
+  "unassignedNodes",
+  "emptyDomains",
+  "capabilitiesWithoutEvidence"
+]

First observedv0.13.0Sep 11, 2026

TDQS

A4.6/5.0

Behavior5/5

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

Goes well beyond the annotations (idempotentHint=true, readOnlyHint=false): it discloses idempotent-read behavior for existing edges, the VaultConflictError thrown by expected_mtime, rejection of invalid type before endpoint slug resolution, the structuredContent repair fields, and the postWriteMaintenance shape returned on changed writes. Consistent with annotations — no contradiction.

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

Conciseness3/5

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

Front-loaded with purpose, but the description is very long and reproduces a substantial amount of output-schema detail (structuredContent repair field names, maintenance_plan bucket names like byPhase/bySeverity/byKind, nextExecutableAction pointers) that an output schema already carries. Information-dense with no fluff, yet over-specified for a selection/invocation description.

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

Completeness4/5

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

For a 5-param mutation tool with an output schema, the description is remarkably complete: it covers frontmatter write semantics, idempotency, conflict handling, error repair metadata, and the sibling batch alternative. It doesn't need to explain return values since output schema exists. Slight redundancy with the schema keeps it from a 5.

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

Parameters4/5

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

Schema coverage is 100%, so baseline is 3, but the description adds real workflow meaning: it explains that the type parameter picks which frontmatter key receives the entry, that `domain` sets the inline parent domain, that depends_on requires a nonblank why, and that expected_mtime should carry the prior get_concept mtime. This is value beyond the schema's literal field definitions.

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 opens with a specific verb and resource ('Add a semantic relation between two nodes') and immediately explains the mechanism (appending to the matching frontmatter graph key). It differentiates from the sibling add_relations by naming the batch alternative explicitly, and the semantics are clearly distinct from remove_relation/replace_relation.

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

Usage Guidelines5/5

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

Gives explicit when-not guidance: 'For multiple already-approved semantic edges use add_relations({relations: [...]})' and flags that infer_imports.moduleEdges require exact-evidence review, semantic rationale, and human approval first. The expected_mtime guidance (pass source-side mtime from a prior get_concept) tells agents exactly when and how to use the conflict guard.

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