Tektolo Rental Property

Security deposit rules for a state (and city)

deposit_settlement_rules

Read-onlyIdempotent

Looks up the security deposit rules (deposits only) for one US state, with a covered city's deposit ordinance (Chicago, San Francisco, Berkeley, Los Angeles, Seattle, Portland, Minneapolis, Saint Paul). Inputs: state (two-letter code); optional city. Returns the deposit return deadline and what starts it, itemization and documentation duties, allowed deductions and depreciation, deposit interest, penalties, the deposit cap and recent changes, with citations. Not for: settling a specific move-out (deposit_settlement_settle does that), evictions, unpaid-rent collection, rent increases or rent control, lease renewal or notice periods, legal advice. Deterministic and source-cited: the same input gives the same result.

Input Schema

TableJSON Schema

Name	Required	Description
`city`	No	Optional city for its overlay (e.g. 'Chicago').
`as_of`	No	Optional date (YYYY-MM-DD): show the law in force on that day, for a past move-out the day the tenancy ended. Omitted: the current law.
`audit`	No	Also return the run record and input/result hashes (an audit trail). Default false.
`state`	Yes	US state, 2-letter code or name (e.g. 'TX').
`serve_pinned`	No	Optional, with expect_ruleset. True asks us to answer under the ruleset version you named even when the rules have changed since, from that version's signed bundle; the result says so in served_from_bundle. We refuse a version older than 12 months, one a later correction or law change replaced for your state, or one we have no bundle for. Default false: the call fails whenever the rules have changed.
`expect_ruleset`	No	Optional. The ruleset version you built against, as results carry it in provenance.ruleset_version (e.g. 'sd-2026.11.14'), or its sha256: hash. If the rules have changed since, the call fails (nothing computed, nothing charged) and says what is in force now, so you upgrade on your own schedule. Leave it out to answer under the current rules.

Output Schema

TableJSON Schema

Name	Required	Description	Default
`run`	No
`links`	No
`result`	Yes
`signature`	No
`input_hash`	No
`client_refs`	No
`result_hash`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed22 schema fields changedOct 15, 2026

addedInput schema / properties / as_of

Added value: +{
+  "description": "Optional date (YYYY-MM-DD): show the law in force on that day, for a past move-out the day the tenancy ended. Omitted: the current law.",
+  "format": "date",
+  "type": "string"
+}

addedInput schema / properties / expect_ruleset

Added value: +{
+  "description": "Optional. The ruleset version you built against, as results carry it in provenance.ruleset_version (e.g. 'sd-2026.11.14'), or its sha256: hash. If the rules have changed since, the call fails (nothing computed, nothing charged) and says what is in force now, so you upgrade on your own schedule. Leave it out to answer under the current rules.",
+  "type": "string"
+}

addedInput schema / properties / serve_pinned

Added value: +{
+  "default": false,
+  "description": "Optional, with expect_ruleset. True asks us to answer under the ruleset version you named even when the rules have changed since, from that version's signed bundle; the result says so in served_from_bundle. We refuse a version older than 12 months, one a later correction or law change replaced for your state, or one we have no bundle for. Default false: the call fails whenever the rules have changed.",
+  "type": "boolean"
+}

addedOutput schema / $defs / Alternative / properties / listed_if

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null
+}

removedOutput schema / $defs / CleaningRule / properties / effective_on

Removed value: -{
-  "anyOf": [
-    {
-      "format": "date",
-      "type": "string"
-    },
-    {
-      "type": "null"
-    }
-  ],
-  "default": null
-}

addedOutput schema / $defs / DeductionRules / properties / cleaning / anyOf

Added value: +[
+  {
+    "items": {
+      "additionalProperties": false,
+      "properties": {
+        "amendment": {
+          "anyOf": [
+            {
+              "type": "string"
+            },
+            {
+              "type": "null"
+            }
+          ]
+        },
+        "from": {
+          "anyOf": [
+            {
+              "format": "date",
+              "type": "string"
+            },
+            {
+              "type": "null"
+            }
+          ]
+        },
+        "governed_by": {
+          "anyOf": [
+            {
+              "type": "string"
+            },
+            {
+              "type": "null"
+            }
+          ]
+        },
+        "note": {
+          "anyOf": [
+            {
+              "type": "string"
+            },
+            {
+              "type": "null"
+            }
+          ]
+        },
+        "source": {
+          "anyOf": [
+            {
+              "type": "string"
+            },
+            {
+              "type": "null"
+            }
+          ]
+        },
+        "until": {
+          "anyOf": [
+            {
+              "format": "date",
+              "type": "string"
+            },
+            {
+              "type": "null"
+            }
+          ]
+        },
+        "value": {
+          "$ref": "#/$defs/CleaningRule"
+        }
+      },
+      "required": [
+        "value"
+      ],
+      "type": "object"
+    },
+    "type": "array"
+  },
+  {
+    "$ref": "#/$defs/CleaningRule"
+  },
+  {
+    "items": {
+      "additionalProperties": false,
+      "properties": {
+        "basis": {
+          "enum": [
+            "named",
+            "damage"
+          ],
+          "type": "string"
+        },
+        "condition": {
+          "anyOf": [
+            {
+              "type": "string"
+            },
+            {
+              "type": "null"
+            }
+          ],
+          "default": null
+        },
+        "effective_on": {
+          "anyOf": [
+            {
+              "format": "date",
+              "type": "string"
+            },
+            {
+              "type": "null"
+            }
+          ],
+          "default": null
+        },
+        "note": {
+          "anyOf": [
+            {
+              "type": "string"
+            },
+            {
+              "type": "null"
+            }
+          ],
+          "default": null
+        },
+        "quote": {
+          "maxLength": 600,
+          "type": "string"
+        },
+        "routine": {
+          "default": "barred",
+          "enum": [
+            "barred",
+            "lease",
+            "reasonable"
+          ],
+          "type": "string"
+        },
+        "routine_signed_provision": {
+          "default": false,
+          "type": "boolean"
+        },
+        "section": {
+          "type": "string"
+        },
+        "source": {
+          "type": "string"
+        },
+        "unless_no_notice": {
+          "default": false,
+          "type": "boolean"
+        },
+        "verbatim": {
+          "default": true,
+          "type": "boolean"
+        }
+      },
+      "required": [
+        "basis",
+        "section",
+        "quote",
+        "source"
+      ],
+      "type": "object"
+    },
+    "type": "array"
+  }
+]

removedOutput schema / $defs / DeductionRules / properties / cleaning / items
```
Removed value: -{
-  "$ref": "#/$defs/CleaningRule"
-}
```
removedOutput schema / $defs / DeductionRules / properties / cleaning / type
```
Removed value: -"array"
```

addedOutput schema / $defs / DescribeEach

Added value: +{
+  "additionalProperties": false,
+  "properties": {
+    "quote": {
+      "maxLength": 400,
+      "type": "string"
+    },
+    "rent_only_exempt": {
+      "default": false,
+      "type": "boolean"
+    },
+    "section": {
+      "type": "string"
+    },
+    "source": {
+      "type": "string"
+    }
+  },
+  "required": [
+    "section",
+    "quote",
+    "source"
+  ],
+  "type": "object"
+}

addedOutput schema / $defs / InterestRule / properties / rate_schedule / anyOf

Added value: +[
+  {
+    "items": {
+      "additionalProperties": false,
+      "properties": {
+        "amendment": {
+          "anyOf": [
+            {
+              "type": "string"
+            },
+            {
+              "type": "null"
+            }
+          ]
+        },
+        "from": {
+          "anyOf": [
+            {
+              "format": "date",
+              "type": "string"
+            },
+            {
+              "type": "null"
+            }
+          ]
+        },
+        "governed_by": {
+          "anyOf": [
+            {
+              "type": "string"
+            },
+            {
+              "type": "null"
+            }
+          ]
+        },
+        "note": {
+          "anyOf": [
+            {
+              "type": "string"
+            },
+            {
+              "type": "null"
+            }
+          ]
+        },
+        "source": {
+          "anyOf": [
+            {
+              "type": "string"
+            },
+            {
+              "type": "null"
+            }
+          ]
+        },
+        "until": {
+          "anyOf": [
+            {
+              "format": "date",
+              "type": "string"
+            },
+            {
+              "type": "null"
+            }
+          ]
+        },
+        "value": {
+          "anyOf": [
+            {
+              "minimum": 0,
+              "type": "number"
+            },
+            {
+              "pattern": "^(?!^[-+.]*$)[+-]?0*\\d*\\.?\\d*$",
+              "type": "string"
+            }
+          ]
+        }
+      },
+      "required": [
+        "value"
+      ],
+      "type": "object"
+    },
+    "type": "array"
+  },
+  {
+    "minimum": 0,
+    "type": "number"
+  },
+  {
+    "pattern": "^(?!^[-+.]*$)[+-]?0*\\d*\\.?\\d*$",
+    "type": "string"
+  },
+  {
+    "items": {
+      "additionalProperties": false,
+      "properties": {
+        "from": {
+          "format": "date",
+          "type": "string"
+        },
+        "note": {
+          "anyOf": [
+            {
+              "type": "string"
+            },
+            {
+              "type": "null"
+            }
+          ],
+          "default": null
+        },
+        "rate_value": {
+          "anyOf": [
+            {
+              "minimum": 0,
+              "type": "number"
+            },
+            {
+              "pattern": "^(?!^[-+.]*$)[+-]?0*\\d*\\.?\\d*$",
+              "type": "string"
+            }
+          ]
+        },
+        "source": {
+          "anyOf": [
+            {
+              "type": "string"
+            },
+            {
+              "type": "null"
+            }
+          ],
+          "default": null
+        },
+        "to": {
+          "format": "date",
+          "type": "string"
+        }
+      },
+      "required": [
+        "from",
+        "to",
+        "rate_value"
+      ],
+      "type": "object"
+    },
+    "type": "array"
+  }
+]

removedOutput schema / $defs / InterestRule / properties / rate_schedule / items
```
Removed value: -{
-  "$ref": "#/$defs/RateWindow"
-}
```
removedOutput schema / $defs / InterestRule / properties / rate_schedule / type
```
Removed value: -"array"
```

addedOutput schema / $defs / Itemization / properties / describe_each

Added value: +{
+  "anyOf": [
+    {
+      "$ref": "#/$defs/DescribeEach"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null
+}

addedOutput schema / $defs / MoveOutList / properties / unnotified_section

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null
+}

addedOutput schema / $defs / Provenance / properties / rules_as_of

Added value: +{
+  "anyOf": [
+    {
+      "format": "date",
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null
+}

removedOutput schema / $defs / RateWindow

Removed value: -{
-  "additionalProperties": false,
-  "properties": {
-    "from": {
-      "format": "date",
-      "type": "string"
-    },
-    "note": {
-      "anyOf": [
-        {
-          "type": "string"
-        },
-        {
-          "type": "null"
-        }
-      ],
-      "default": null
-    },
-    "rate_value": {
-      "anyOf": [
-        {
-          "minimum": 0,
-          "type": "number"
-        },
-        {
-          "pattern": "^(?!^[-+.]*$)[+-]?0*\\d*\\.?\\d*$",
-          "type": "string"
-        }
-      ]
-    },
-    "source": {
-      "anyOf": [
-        {
-          "type": "string"
-        },
-        {
-          "type": "null"
-        }
-      ],
-      "default": null
-    },
-    "to": {
-      "format": "date",
-      "type": "string"
-    }
-  },
-  "required": [
-    "from",
-    "to",
-    "rate_value"
-  ],
-  "type": "object"
-}

addedOutput schema / $defs / Receipts / properties / estimate_note

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null
+}

addedOutput schema / $defs / Receipts / properties / estimate_section

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null
+}

addedOutput schema / $defs / ResultSignature

Added value: +{
+  "properties": {
+    "jws": {
+      "type": "string"
+    },
+    "payload": {
+      "$ref": "#/$defs/ResultSignaturePayload"
+    },
+    "verify_code": {
+      "type": "string"
+    },
+    "verify_url": {
+      "type": "string"
+    }
+  },
+  "required": [
+    "jws",
+    "payload",
+    "verify_code",
+    "verify_url"
+  ],
+  "type": "object"
+}

addedOutput schema / $defs / ResultSignaturePayload

Added value: +{
+  "properties": {
+    "capability": {
+      "type": "string"
+    },
+    "engine_version": {
+      "type": "string"
+    },
+    "issued_at": {
+      "type": "string"
+    },
+    "kid": {
+      "type": "string"
+    },
+    "operation": {
+      "type": "string"
+    },
+    "result_hash": {
+      "type": "string"
+    },
+    "ruleset_hash": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "ruleset_version": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "v": {
+      "type": "integer"
+    }
+  },
+  "required": [
+    "v",
+    "kid",
+    "capability",
+    "operation",
+    "ruleset_version",
+    "ruleset_hash",
+    "engine_version",
+    "result_hash",
+    "issued_at"
+  ],
+  "type": "object"
+}

addedOutput schema / $defs / ReturnRule / properties / demand_in_writing
```
Added value: +{
+  "default": false,
+  "type": "boolean"
+}
```

addedOutput schema / properties / signature

Added value: +{
+  "anyOf": [
+    {
+      "$ref": "#/$defs/ResultSignature"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null
+}

First observedOct 15, 2026

TDQS

A4.4/5.0

Behavior4/5

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

Annotations already declare readOnly, idempotent, closed-world, non-destructive, so the safety profile is covered. The description adds behavior annotations do not carry: determinism ('same input gives the same result') and that results are source-cited. The versioned-ruleset refusal semantics live only in the schema, so the description leaves that behavioral nuance to the parameter docs rather than surfacing it.

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?

Front-loaded with purpose, then inputs, then returns, then exclusions — a sensible ordering. Slightly dense, but each sentence earns its place; the long 'Not for' list is high-value routing information rather than filler.

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

Completeness5/5

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

For a six-parameter tool with an output schema, the description covers purpose, input shape, the nature of the returned content (deadlines, itemization duties, deductions, interest, penalties, caps, citations), and explicit boundaries. Nothing an agent needs to select and call this correctly is missing.

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 100%, so the schema carries the parameter burden and the baseline is 3. The description names only state and city, omitting as_of, audit, serve_pinned, and expect_ruleset, so it adds essentially nothing beyond what the schema already documents in detail.

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?

States a specific verb and resource (looks up security deposit rules for one state plus a covered city ordinance) and immediately scopes itself as 'deposits only'. It names the sibling it is not (deposit_settlement_settle) so an agent can route between the rules-lookup tool and the settlement-action tool without opening either schema.

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?

Explicit exclusions are enumerated: settling a specific move-out (with the alternative named), evictions, unpaid-rent collection, rent increases, rent control, lease renewal, notice periods, and legal advice. This is exactly the when-not-to-use guidance that keeps an agent from mis-routing adjacent legal-adjacent questions.

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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