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patch_concept

Update an existing ontology node's frontmatter or body. Patch metadata key-by-key, replace body fully, and pass expected_mtime to detect concurrent edits.

Instructions

Update the frontmatter and/or body of an existing ontology node. Use when an AI agent revises, deepens, or reclassifies a node. Frontmatter patches are key-by-key — null deletes a key, omission preserves it. Body is fully replaced when provided, otherwise preserved. Pass expected_mtime (from the previous get_concept response) to detect concurrent external edits — throws VaultConflictError if the file has changed on disk since you read it. 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 continue graph cleanup.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
bodyNoFull replacement markdown body (optional). Preserved when omitted.
slugYesVault-relative slug (omit the .md extension).
frontmatterNoFrontmatter key/value patches (e.g. { kind: "capability", domain: "views" }). null removes the key. Per-locale display names go here as `display_ko` / `display_en` — fill every locale the vault serves so both audiences read a native name (`title` stays the search/matching source).
expected_mtimeNoOptional conflict guard. If the file mtimeMs differs at write time, the call throws so the caller can re-read and retry. Pass the `mtime` field from the most recent get_concept response.

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
okYes
slugYes
changedYes
filePathYes
postWriteMaintenanceYesCompact 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.

  1. Changed4 schema fields changedv1.3.0
    • 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"
      +]
  2. Changed8 schema fields changedv1.2.5
    • 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"
      +]
  3. First observedv0.13.0

TDQS

A4.6/5.0
Behavior5/5

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

The description goes well beyond annotations, detailing the exact merge semantics (key-by-key frontmatter patching, null deletion, omission preservation, full body replacement vs. preservation). It discloses the VaultConflictError mechanism and describes the postWriteMaintenance return structure with actionable fields. Annotations only indicate it's a write and non-destructive, but the description adds rich behavioral context.

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 relatively long but each clause earns its place: purpose, usage, merge semantics, conflict handling, and return maintenance details. It's front-loaded with the core action, and the density of useful information outweighs any verbosity. Could be trimmed slightly, but no redundancy.

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?

With an output schema available, the description correctly focuses on behavior not return format. It covers the patching rules, conflict detection, and the maintenance plan hooks. Minor omissions like validation rules for frontmatter values are acceptable given the schema and sibling tools. For a complex mutating operation, this is nearly complete.

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

Parameters5/5

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

Despite 100% schema coverage, the description adds critical nuance not present in the schema: the frontmatter patch semantics (null deletes, omission preserves), body replacement rules, and the origin/usage of expected_mtime ('from the previous get_concept response'). This transforms bare parameter definitions into actionable contracts.

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: 'Update the frontmatter and/or body of an existing ontology node.' This clearly distinguishes it from sibling tools like add_concept (creation) and delete_concept (removal). The scope is precise and unambiguous.

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?

Explicitly states when to use: 'Use when an AI agent revises, deepens, or reclassifies a node.' It does not list alternatives or exclusions (e.g., don't use for new nodes), but the context is clear enough. The mention of expected_mtime for conflict detection provides concrete guidance on safe use.

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