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OneLence

by com.onelence
OverviewDiscussionsAdmin

Signals

onelence_list_signals
Read-onlyIdempotent

What changed: material observed changes, active first. Filter by group (active or recent) or by a source id. Signals are observations, not Decisions.

Tool call template

This tool declares no required parameters. Add optional parameters from the input schema as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {},
    "name": "onelence_list_signals"
  }
}

Input Schema

NameRequiredDescriptionDefault
siteNoSite domain (e.g. example.com) or site id. Defaults to the workspace's newest active site.
groupNo
limitNoItems to return (default 25).
cursorNonext_cursor from the previous call, for more.
source_idNoOnly signals about this source.
response_formatNoconcise (default) keeps what is needed to answer and to chain the next call; detailed returns every field.
include_suppressedNo

Output Schema

NameRequiredDescriptionDefault
dataYes
moreNoHow to fetch the next page, when has_more.
noteYes
stateYes
objectYes
has_moreYes
truncatedYes
next_cursorYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changed
    • changedOutput schema / (root)
      Previous value: -nullNew value: +{
+  "properties": {
+    "data": {
+      "items": {
+        "properties": {
+          "change": {
+            "properties": {
+              "currency": {
+                "anyOf": [
+                  {
+                    "type": "string"
+                  },
+                  {
+                    "type": "null"
+                  }
+                ]
+              },
+              "state": {
+                "enum": [
+                  "measured",
+                  "missing",
+                  "unavailable",
+                  "not_applicable"
+                ],
+                "type": "string"
+              },
+              "value": {
+                "anyOf": [
+                  {
+                    "type": "number"
+                  },
+                  {
+                    "type": "null"
+                  }
+                ]
+              }
+            },
+            "required": [
+              "state",
+              "value",
+              "currency"
+            ],
+            "type": "object"
+          },
+          "comparison": {
+            "properties": {
+              "currency": {
+                "anyOf": [
+                  {
+                    "type": "string"
+                  },
+                  {
+                    "type": "null"
+                  }
+                ]
+              },
+              "state": {
+                "enum": [
+                  "measured",
+                  "missing",
+                  "unavailable",
+                  "not_applicable"
+                ],
+                "type": "string"
+              },
+              "value": {
+                "anyOf": [
+                  {
+                    "type": "number"
+                  },
+                  {
+                    "type": "null"
+                  }
+                ]
+              }
+            },
+            "required": [
+              "state",
+              "value",
+              "currency"
+            ],
+            "type": "object"
+          },
+          "comparison_window": {
+            "anyOf": [
+              {
+                "properties": {
+                  "end": {
+                    "type": "string"
+                  },
+                  "start": {
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "start",
+                  "end"
+                ],
+                "type": "object"
+              },
+              {
+                "type": "null"
+              }
+            ]
+          },
+          "current": {
+            "properties": {
+              "currency": {
+                "anyOf": [
+                  {
+                    "type": "string"
+                  },
+                  {
+                    "type": "null"
+                  }
+                ]
+              },
+              "state": {
+                "enum": [
+                  "measured",
+                  "missing",
+                  "unavailable",
+                  "not_applicable"
+                ],
+                "type": "string"
+              },
+              "value": {
+                "anyOf": [
+                  {
+                    "type": "number"
+                  },
+                  {
+                    "type": "null"
+                  }
+                ]
+              }
+            },
+            "required": [
+              "state",
+              "value",
+              "currency"
+            ],
+            "type": "object"
+          },
+          "current_window": {
+            "properties": {
+              "end": {
+                "type": "string"
+              },
+              "start": {
+                "type": "string"
+              }
+            },
+            "required": [
+              "start",
+              "end"
+            ],
+            "type": "object"
+          },
+          "direction": {
+            "anyOf": [
+              {
+                "type": "string"
+              },
+              {
+                "type": "null"
+              }
+            ]
+          },
+          "group": {
+            "enum": [
+              "active",
+              "recent"
+            ],
+            "type": "string"
+          },
+          "id": {
+            "type": "string"
+          },
+          "kind": {
+            "const": "observation",
+            "type": "string"
+          },
+          "materiality": {
+            "anyOf": [
+              {
+                "type": "string"
+              },
+              {
+                "type": "null"
+              }
+            ]
+          },
+          "metric": {
+            "type": "string"
+          },
+          "object": {
+            "const": "signal",
+            "type": "string"
+          },
+          "relative_change": {
+            "properties": {
+              "currency": {
+                "anyOf": [
+                  {
+                    "type": "string"
+                  },
+                  {
+                    "type": "null"
+                  }
+                ]
+              },
+              "state": {
+                "enum": [
+                  "measured",
+                  "missing",
+                  "unavailable",
+                  "not_applicable"
+                ],
+                "type": "string"
+              },
+              "value": {
+                "anyOf": [
+                  {
+                    "type": "number"
+                  },
+                  {
+                    "type": "null"
+                  }
+                ]
+              }
+            },
+            "required": [
+              "state",
+              "value",
+              "currency"
+            ],
+            "type": "object"
+          },
+          "source_ids": {
+            "items": {
+              "type": "string"
+            },
+            "type": "array"
+          },
+          "stability": {
+            "anyOf": [
+              {
+                "type": "string"
+              },
+              {
+                "type": "null"
+              }
+            ]
+          },
+          "status": {
+            "enum": [
+              "active",
+              "expired",
+              "retracted",
+              "superseded"
+            ],
+            "type": "string"
+          },
+          "subject": {
+            "properties": {
+              "id": {
+                "anyOf": [
+                  {
+                    "type": "string"
+                  },
+                  {
+                    "type": "null"
+                  }
+                ]
+              },
+              "kind": {
+                "anyOf": [
+                  {
+                    "type": "string"
+                  },
+                  {
+                    "type": "null"
+                  }
+                ]
+              },
+              "label": {
+                "anyOf": [
+                  {
+                    "type": "string"
+                  },
+                  {
+                    "type": "null"
+                  }
+                ]
+              }
+            },
+            "required": [
+              "kind",
+              "id",
+              "label"
+            ],
+            "type": "object"
+          },
+          "summary": {
+            "anyOf": [
+              {
+                "type": "string"
+              },
+              {
+                "type": "null"
+              }
+            ]
+          },
+          "title": {
+            "anyOf": [
+              {
+                "type": "string"
+              },
+              {
+                "type": "null"
+              }
+            ]
+          },
+          "unit": {
+            "anyOf": [
+              {
+                "type": "string"
+              },
+              {
+                "type": "null"
+              }
+            ]
+          }
+        },
+        "required": [
+          "id",
+          "title",
+          "summary",
+          "subject",
+          "source_ids",
+          "direction",
+          "status",
+          "group",
+          "current_window",
+          "current",
+          "comparison",
+          "relative_change"
+        ],
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "has_more": {
+      "type": "boolean"
+    },
+    "more": {
+      "description": "How to fetch the next page, when has_more.",
+      "type": "string"
+    },
+    "next_cursor": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "note": {
+      "type": "string"
+    },
+    "object": {
+      "const": "list",
+      "type": "string"
+    },
+    "state": {
+      "enum": [
+        "available",
+        "empty",
+        "unavailable"
+      ],
+      "type": "string"
+    },
+    "truncated": {
+      "type": "boolean"
+    }
+  },
+  "required": [
+    "object",
+    "data",
+    "has_more",
+    "next_cursor",
+    "note",
+    "state",
+    "truncated"
+  ],
+  "type": "object"
+}
  2. First observed

TDQS

B3.2/5.0
Behavior3/5

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

Annotations already declare readOnly, idempotent, non-destructive, closed-world behavior, so safety is covered. The description adds ordering ('active first') and the semantic distinction from Decisions, but says nothing about pagination, defaults, or what suppressed items are, despite an include_suppressed parameter.

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?

Three short clauses, front-loaded with the scope and ending with the disambiguation from Decisions. The telegraphic style ('What changed:') is slightly cryptic but wastes nothing.

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 7 optional parameters, an output schema, and rich annotations, the description only needs to state scope and routing, which it mostly does. The gaps — no mention of default site resolution, pagination chaining, or include_suppressed — are partly covered by the schema but the missing differentiation from list_changes is a real omission.

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

Parameters3/5

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

Schema description coverage is 71%, so the schema already documents site, limit, cursor, source_id and response_format. The description repeats group and source_id filtering without adding format or semantics, and leaves include_suppressed entirely unexplained in both schema and description — baseline 3 is appropriate.

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

Purpose3/5

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

The description says 'material observed changes, active first' and that signals are 'observations, not Decisions', which conveys the resource but never states the verb (list/return signals). The phrase 'What changed' overlaps heavily with the sibling onelence_list_changes, so an agent cannot cleanly tell the two apart from the description alone.

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

Usage Guidelines3/5

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

It gives filtering options (by group active/recent, or by source id) and implicitly routes away from Decisions, which is useful. However it names no sibling explicitly — most importantly onelence_list_changes and onelence_get_signal — and gives no when-not-to-use guidance.

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

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