Added value: +"UTC decision-time cutoff for source freshness and availability checks; for example 2026-01-01T12:00:00Z. Future observations are not silently included."

Added value: +"Optional review thresholds; omitted fields use the documented defaults. Policies do not create statistical or trading guarantees."

Added value: +30

Added value: +"Number of earlier transformed observations in the baseline window; default 30. Total required transformed history is baseline_points + recent_points."

Added value: +0.2

Added value: +"Absolute fractional change in median measurement coverage that prompts review, including increases; default 0.2 means 20%. Applies only to supplied sample_size values."

Added value: +3

Added value: +"Departure threshold in baseline robust-spread units (1.4826 times median absolute deviation); default 3.0. This is a review threshold, not a significance level."

Added value: +3

Added value: +"Number of latest transformed observations compared with the baseline; default 3. Persistence requires at least two qualifying readings, so a one-point window cannot establish persistence."

Added value: +3

Added value: +"Recent-to-baseline robust-spread ratio that flags volatility expansion; default 3.0. A constant baseline followed by positive spread is also flagged."

Added value: +"Up to 32 caller-supplied series to assess independently, with unique ids and source/clock metadata. An empty list returns insufficient_visibility."

Added value: +"Optional caller-defined grouping label for review queues; defaults to this series id. It does not certify independence or comparability."

Added value: +"Unique series identifier within this request, used in results and cross-series relationships."

Added value: +"Measurement type. Both assessment tools convert price to log returns. market_assessment keeps other values unchanged; spectral_assessment keeps return values and first-differences level, spread, rate and count."

Added value: +"Maximum allowed age in seconds of the last observation relative to as_of. Older data remains insufficient_visibility; choose an appropriate cadence-specific limit."

Added value: +"Optional largest allowed time gap in seconds between observations. A larger gap restarts the contiguous tail. If omitted, calendar gap policy is unknown and a warning is returned."

Added value: +"Zero to 2048 observations in strictly increasing UTC order. Empty or inadequate histories return visibility gaps; null values and declared time gaps are preserved, never interpolated."

Added value: +"UTC time the observation became available to the caller. A time before observed_at becomes an availability_precedes_observation visibility gap; after as_of becomes not_yet_available. Omission is retained as incomplete availability history."

Added value: +"Time represented by this observation, in UTC. Timestamps within a series must be unique and strictly increasing."

Added value: +"Positive measurement-coverage denominator for this observation, or null when missing. This is not trading volume. Omit if coverage is not supplied; zero is invalid."

Added value: +"Finite measurement in the declared series unit. Prices must be positive and counts nonnegative. Use null for missing data; it breaks the contiguous analysis window and is never filled."

Added value: +"Source identity, optional attribution URL and declared usage rights. All are caller-supplied, not attestations."

Added value: +"Caller-defined source identifier retained in results, for example synthetic-demo or a licensed provider name."

Added value: +"Caller's source-use declaration. Only permitted permits numerical assessment; unknown and restricted remain explicit visibility gaps. The server does not grant or verify rights."

Added value: +"Optional source or evidence URL retained for attribution; no URL is fetched or independently verified."

Added value: +"Consistent measurement unit for all observations, for example USD, decimal_return, basis_points or count. No currency conversion, percent conversion or economic comparability is inferred."

Removed value: -true

Added value: +[
+  {
+    "additionalProperties": false,
+    "properties": {
+      "as_of": {},
+      "attention_queue": {},
+      "coverage": {},
+      "execution_authority": {},
+      "limits": {},
+      "method": {},
+      "policy": {},
+      "policy_sha256": {},
+      "related_movements": {},
+      "request_sha256": {},
+      "schema": {},
+      "series": {},
+      "status": {},
+      "visibility_gaps": {}
+    },
+    "required": [
+      "schema",
+      "as_of",
+      "status",
+      "policy",
+      "series",
+      "attention_queue",
+      "visibility_gaps",
+      "related_movements",
+      "coverage",
+      "method",
+      "limits",
+      "execution_authority",
+      "request_sha256",
+      "policy_sha256"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "description": "Existing tool-error payload; no successful result fields are implied.",
+    "properties": {
+      "error": {
+        "description": "Validation or computation failure message; inspect MCP isError or the HTTP status.",
+        "type": "string"
+      }
+    },
+    "required": [
+      "error"
+    ],
+    "type": "object"
+  }
+]

Added value: +"Market attention and explicit source/coverage gaps; no absent evidence is replaced by zero. Tool errors retain the separate error-message shape."

Added value: +{
+  "as_of": {
+    "description": "Caller-supplied UTC cutoff.",
+    "type": "string"
+  },
+  "attention_queue": {
+    "description": "Review/watch series sorted by priority then id.",
+    "items": {
+      "additionalProperties": false,
+      "description": "One prioritized series.",
+      "properties": {
+        "group": {
+          "description": "Declared group.",
+          "type": "string"
+        },
+        "id": {
+          "description": "Series id.",
+          "type": "string"
+        },
+        "reasons": {
+          "description": "Ordered statements or identifiers.",
+          "items": {
+            "description": "One retained statement or identifier.",
+            "type": "string"
+          },
+          "type": "array"
+        },
+        "status": {
+          "description": "Review priority state.",
+          "enum": [
+            "review",
+            "watch"
+          ],
+          "type": "string"
+        }
+      },
+      "required": [
+        "id",
+        "status",
+        "reasons",
+        "group"
+      ],
+      "type": "object"
+    },
+    "type": "array"
+  },
+  "coverage": {
+    "additionalProperties": false,
+    "description": "Coverage of only the supplied set.",
+    "properties": {
+      "assessed_series": {
+        "description": "Series passing visibility gates.",
+        "minimum": 0,
+        "type": "integer"
+      },
+      "complete_for_supplied_series": {
+        "description": "Nonempty supplied set with no visibility gaps.",
+        "type": "boolean"
+      },
+      "market_universe_complete": {
+        "const": false,
+        "description": "Market collection completeness is unknown.",
+        "type": "boolean"
+      },
+      "requested_series": {
+        "description": "Supplied series.",
+        "minimum": 0,
+        "type": "integer"
+      }
+    },
+    "required": [
+      "requested_series",
+      "assessed_series",
+      "complete_for_supplied_series",
+      "market_universe_complete"
+    ],
+    "type": "object"
+  },
+  "error": {
+    "description": "Validation or computation failure message; inspect MCP isError or the HTTP status.",
+    "type": "string"
+  },
+  "execution_authority": {
+    "const": false,
+    "description": "No trading authority.",
+    "type": "boolean"
+  },
+  "limits": {
+    "description": "Ordered statements or identifiers.",
+    "items": {
+      "description": "One retained statement or identifier.",
+      "type": "string"
+    },
+    "type": "array"
+  },
+  "method": {
+    "description": "Assessment construction.",
+    "type": "string"
+  },
+  "policy": {
+    "additionalProperties": false,
+    "description": "Fully applied policy, including defaults.",
+    "properties": {
+      "baseline_points": {
+        "description": "Earlier transformed readings.",
+        "minimum": 0,
+        "type": "integer"
+      },
+      "coverage_drop_fraction": {
+        "description": "Absolute measurement-coverage change fraction.",
+        "type": "number"
+      },
+      "move_threshold": {
+        "description": "Robust-spread units.",
+        "type": "number"
+      },
+      "recent_points": {
+        "description": "Latest transformed readings.",
+        "minimum": 0,
+        "type": "integer"
+      },
+      "volatility_ratio": {
+        "description": "Recent/baseline spread ratio.",
+        "type": "number"
+      }
+    },
+    "required": [
+      "baseline_points",
+      "recent_points",
+      "move_threshold",
+      "volatility_ratio",
+      "coverage_drop_fraction"
+    ],
+    "type": "object"
+  },
+  "policy_sha256": {
+    "description": "SHA-256 of the canonicalized submitted request or applied policy.",
+    "pattern": "^[0-9a-f]{64}$",
+    "type": "string"
+  },
+  "related_movements": {
+    "description": "Relationships with absolute correlation at least 0.85.",
+    "items": {
+      "additionalProperties": false,
+      "description": "Strong aligned relationship.",
+      "properties": {
+        "aligned_points": {
+          "description": "Shared timestamps.",
+          "minimum": 0,
+          "type": "integer"
+        },
+        "correlation": {
+          "description": "Aligned Pearson correlation.",
+          "type": "number"
+        },
+        "independent_confirmation": {
+          "const": false,
+          "description": "Correlation is not independent corroboration.",
+          "type": "boolean"
+        },
+        "series": {
+          "description": "Pair of series ids.",
+          "items": {
+            "description": "Series id.",
+            "type": "string"
+          },
+          "maxItems": 2,
+          "minItems": 2,
+          "type": "array"
+        }
+      },
+      "required": [
+        "series",
+        "correlation",
+        "aligned_points",
+        "independent_confirmation"
+      ],
+      "type": "object"
+    },
+    "type": "array"
+  },
+  "request_sha256": {
+    "description": "SHA-256 of the canonicalized submitted request or applied policy.",
+    "pattern": "^[0-9a-f]{64}$",
+    "type": "string"
+  },
+  "schema": {
+    "const": "noisefloor.market-assessment.v1",
+    "description": "Result contract identifier.",
+    "type": "string"
+  },
+  "series": {
+    "description": "All supplied series in input order.",
+    "items": {
+      "additionalProperties": false,
+      "description": "Every supplied series is retained, including rejected sources and missing histories.",
+      "properties": {
+        "age_seconds": {
+          "anyOf": [
+            {
+              "description": "Cutoff minus last observation timestamp in seconds; may be negative for future data.",
+              "type": "number"
+            },
+            {
+              "type": "null"
+            }
+          ],
+          "description": "Cutoff minus last observation timestamp in seconds; may be negative for future data. Null means unavailable or not applicable, never zero."
+        },
+        "analyzed_points": {
+          "description": "Points actually used; omitted for insufficient visibility.",
+          "minimum": 0,
+          "type": "integer"
+        },
+        "analyzed_unit": {
+          "description": "log_return for prices, otherwise the declared unit.",
+          "type": "string"
+        },
+        "as_published_history_verified": {
+          "const": false,
+          "description": "Caller timestamps do not verify historical availability.",
+          "type": "boolean"
+        },
+        "availability_timestamps_complete": {
+          "description": "Every supplied observation declares availability and the series is nonempty.",
+          "type": "boolean"
+        },
+        "available_at": {
+          "anyOf": [
+            {
+              "description": "Last supplied availability timestamp, if present.",
+              "type": "string"
+            },
+            {
+              "type": "null"
+            }
+          ],
+          "description": "Last supplied availability timestamp, if present. Null means unavailable or not applicable, never zero."
+        },
+        "contiguous_points": {
+          "description": "Usable transformed tail points.",
+          "minimum": 0,
+          "type": "integer"
+        },
+        "diagnostics": {
+          "anyOf": [
+            {
+              "additionalProperties": false,
+              "description": "Computed only for source-eligible series with sufficient contiguous history.",
+              "properties": {
+                "baseline_median": {
+                  "description": "Baseline center in analyzed units.",
+                  "type": "number"
+                },
+                "baseline_robust_spread": {
+                  "description": "Baseline MAD times 1.4826 in analyzed units.",
+                  "type": "number"
+                },
+                "coverage": {
+                  "additionalProperties": false,
+                  "description": "Measurement coverage, not trading volume.",
+                  "properties": {
+                    "relative_change": {
+                      "anyOf": [
+                        {
+                          "description": "Recent minus baseline median denominator divided by baseline.",
+                          "type": "number"
+                        },
+                        {
+                          "type": "null"
+                        }
+                      ],
+                      "description": "Recent minus baseline median denominator divided by baseline. Null means unavailable or not applicable, never zero."
+                    },
+                    "status": {
+                      "description": "Measurement-denominator availability or change.",
+                      "enum": [
+                        "not_supplied",
+                        "incomplete",
+                        "changed",
+                        "stable"
+                      ],
+                      "type": "string"
+                    }
+                  },
+                  "required": [
+                    "status",
+                    "relative_change"
+                  ],
+                  "type": "object"
+                },
+                "lag_one_correlation": {
+                  "anyOf": [
+                    {
+                      "description": "Lag-one correlation, when estimable.",
+                      "type": "number"
+                    },
+                    {
+                      "type": "null"
+                    }
+                  ],
+                  "description": "Lag-one correlation, when estimable. Null means unavailable or not applicable, never zero."
+                },
+                "latest_change": {
+                  "description": "Latest minus baseline median in analyzed units.",
+                  "type": "number"
+                },
+                "latest_robust_departure": {
+                  "anyOf": [
+                    {
+                      "description": "Latest change in baseline robust-spread units.",
+                      "type": "number"
+                    },
+                    {
+                      "type": "null"
+                    }
+                  ],
+                  "description": "Latest change in baseline robust-spread units. Null means unavailable or not applicable, never zero."
+                },
+                "median_change": {
+                  "description": "Recent minus baseline median in analyzed units.",
+                  "type": "number"
+                },
+                "monitor": {
+                  "additionalProperties": false,
+                  "description": "Descriptive monitor of the analyzed window.",
+                  "properties": {
+                    "change_points": {
+                      "description": "Alarm positions in the analyzed window.",
+                      "items": {
+                        "description": "Zero-based window position.",
+                        "minimum": 0,
+                        "type": "integer"
+                      },
+                      "type": "array"
+                    },
+                    "guarantee": {
+                      "description": "No statistical or market-performance guarantee is made.",
+                      "type": "null"
+                    },
+                    "is_e_value": {
+                      "const": false,
+                      "description": "Not a calibrated e-value.",
+                      "type": "boolean"
+                    },
+                    "state": {
+                      "description": "Descriptive monitor state.",
+                      "type": "string"
+                    },
+                    "statistic": {
+                      "description": "Raw monitoring statistic, not an e-value.",
+                      "type": "number"
+                    },
+                    "statistic_type": {
+                      "const": "shiryaev_roberts",
+                      "description": "Monitor family.",
+                      "type": "string"
+                    }
+                  },
+                  "required": [
+                    "state",
+                    "statistic",
+                    "statistic_type",
+                    "is_e_value",
+                    "change_points",
+                    "guarantee"
+                  ],
+                  "type": "object"
+                },
+                "persistence_points": {
+                  "description": "Recent readings with a supported same-direction departure.",
+                  "minimum": 0,
+                  "type": "integer"
+                },
+                "recent_median": {
+                  "description": "Recent center in analyzed units.",
+                  "type": "number"
+                },
+                "recent_robust_spread": {
+                  "description": "Recent MAD times 1.4826 in analyzed units.",
+                  "type": "number"
+                },
+                "representation_tolerance": {
+                  "description": "Log-price arithmetic tolerance in analyzed units, zero for direct measurements.",
+                  "type": "number"
+                },
+                "representation_tolerance_basis": {
+                  "description": "Arithmetic source of the tolerance.",
+                  "type": "string"
+                },
+                "robust_departure": {
+                  "anyOf": [
+                    {
+                      "description": "Median change in baseline robust-spread units.",
+                      "type": "number"
+                    },
+                    {
+                      "type": "null"
+                    }
+                  ],
+                  "description": "Median change in baseline robust-spread units. Null means unavailable or not applicable, never zero."
+                },
+                "volatility_ratio": {
+                  "anyOf": [
+                    {
+                      "description": "Recent/baseline robust spread; null at zero baseline spread.",
+                      "type": "number"
+                    },
+                    {
+                      "type": "null"
+                    }
+                  ],
+                  "description": "Recent/baseline robust spread; null at zero baseline spread. Null means unavailable or not applicable, never zero."
+                },
+                "window_end": {
+                  "description": "Last analyzed observation timestamp.",
+                  "type": "string"
+                },
+                "window_start": {
+                  "description": "First analyzed observation timestamp.",
+                  "type": "string"
+                }
+              },
+              "required": [
+                "baseline_median",
+                "recent_median",
+                "median_change",
+                "latest_change",
+                "baseline_robust_spread",
+                "recent_robust_spread",
+                "representation_tolerance",
+                "robust_departure",
+                "latest_robust_departure",
+                "volatility_ratio",
+                "persistence_points",
+                "representation_tolerance_basis",
+                "lag_one_correlation",
+                "coverage",
+                "monitor",
+                "window_start",
+                "window_end"
+              ],
+              "type": "object"
+            },
+            {
+              "type": "null"
+            }
+          ],
+          "description": "Computed only for source-eligible series with sufficient contiguous history. Null means unavailable or not applicable, never zero."
+        },
+        "gap_indices": {
+          "description": "Declared-calendar gap positions.",
+          "items": {
+            "description": "Zero-based observation index.",
+            "minimum": 0,
+            "type": "integer"
+          },
+          "type": "array"
+        },
+        "group": {
+          "description": "Declared group, defaulting to series id.",
+          "type": "string"
+        },
+        "guarantee": {
+          "description": "No statistical or market-performance guarantee is made.",
+          "type": "null"
+        },
+        "id": {
+          "description": "Caller-supplied series identifier.",
+          "type": "string"
+        },
+        "is_e_value": {
+          "const": false,
+          "description": "No calibrated e-value.",
+          "type": "boolean"
+        },
+        "kind": {
+          "description": "Caller-declared measurement kind.",
+          "type": "string"
+        },
+        "missing_points": {
+          "description": "Null-valued observations.",
+          "minimum": 0,
+          "type": "integer"
+        },
+        "observation_count": {
+          "description": "Supplied observation count.",
+          "minimum": 0,
+          "type": "integer"
+        },
+        "observed_at": {
+          "anyOf": [
+            {
+              "description": "Last supplied observation timestamp; null for no observations.",
+              "type": "string"
+            },
+            {
+              "type": "null"
+            }
+          ],
+          "description": "Last supplied observation timestamp; null for no observations. Null means unavailable or not applicable, never zero."
+        },
+        "priority": {
+          "anyOf": [
+            {
+              "description": "Review=2, watch=1, no supported departure=0; null when ineligible.",
+              "minimum": 0,
+              "type": "integer"
+            },
+            {
+              "type": "null"
+            }
+          ],
+          "description": "Review=2, watch=1, no supported departure=0; null when ineligible. Null means unavailable or not applicable, never zero."
+        },
+        "reading": {
+          "description": "Interpretation or visibility-gap explanation.",
+          "type": "string"
+        },
+        "reasons": {
+          "description": "Ordered statements or identifiers.",
+          "items": {
+            "description": "One retained statement or identifier.",
+            "type": "string"
+          },
+          "type": "array"
+        },
+        "required_points": {
+          "description": "Baseline plus recent point requirement.",
+          "minimum": 0,
+          "type": "integer"
+        },
+        "source": {
+          "additionalProperties": false,
+          "properties": {
+            "id": {
+              "description": "Caller-defined source identifier retained in results, for example synthetic-demo or a licensed provider name.",
+              "maxLength": 128,
+              "minLength": 1,
+              "type": "string"
+            },
+            "rights": {
+              "description": "Caller's source-use declaration. Only permitted permits numerical assessment; unknown and restricted remain explicit visibility gaps. The server does not grant or verify rights.",
+              "enum": [
+                "permitted",
+                "unknown",
+                "restricted"
+              ],
+              "type": "string"
+            },
+            "url": {
+              "description": "Optional source or evidence URL retained for attribution; no URL is fetched or independently verified.",
+              "maxLength": 2048,
+              "minLength": 1,
+              "type": "string"
+            }
+          },
+          "required": [
+            "id",
+            "rights"
+          ],
+          "type": "object"
+        },
+        "status": {
+          "description": "Per-series assessment state.",
+          "enum": [
+            "insufficient_visibility",
+            "review",
+            "watch",
+            "no_supported_departure"
+          ],
+          "type": "string"
+        },
+        "transform": {
+          "description": "price becomes log_return; all other kinds use identity.",
+          "enum": [
+            "log_return",
+            "identity"
+          ],
+          "type": "string"
+        },
+        "unit": {
+          "description": "Caller-declared input unit.",
+          "type": "string"
+        },
+        "validity": {
+          "const": "descriptive",
+          "description": "Descriptive assessment, not a probability or statistical certificate.",
+          "type": "string"
+        },
+        "warnings": {
+          "description": "Ordered statements or identifiers.",
+          "items": {
+            "description": "One retained statement or identifier.",
+            "type": "string"
+          },
+          "type": "array"
+        }
+      },
+      "required": [
+        "id",
+        "kind",
+        "unit",
+        "source",
+        "group",
+        "reasons",
+        "warnings",
+        "observed_at",
+        "available_at",
+        "age_seconds",
+        "gap_indices",
+        "missing_points",
+        "availability_timestamps_complete",
+        "as_published_history_verified",
+        "status",
+        "observation_count",
+        "contiguous_points",
+        "required_points",
+        "transform",
+        "analyzed_unit",
+        "diagnostics",
+        "priority",
+        "is_e_value",
+        "validity",
+        "guarantee",
+        "reading"
+      ],
+      "type": "object"
+    },
+    "type": "array"
+  },
+  "status": {
+    "description": "Aggregate visibility state.",
+    "enum": [
+      "insufficient_visibility",
+      "partial",
+      "assessed"
+    ],
+    "type": "string"
+  },
+  "visibility_gaps": {
+    "description": "Ordered statements or identifiers.",
+    "items": {
+      "description": "One retained statement or identifier.",
+      "type": "string"
+    },
+    "type": "array"
+  }
+}