Utility Matrix

Database Connection Pool Calculator

connection-pool-calculator

Read-onlyIdempotent

Use this when a user asks how many database connections to configure. Uses the same max_connections, app server count, database cores, average query duration, and peak RPS model as the browser calculator.

Input Schema

TableJSON Schema

Name	Required	Description
`db_cores`	Yes	db cores used by this deterministic tool.
`peak_rps`	Yes	peak rps used by this deterministic tool.
`app_servers`	Yes	app servers used by this deterministic tool.
`avg_query_ms`	Yes	avg query ms used by this deterministic tool.
`max_connections`	Yes	max connections used by this deterministic tool.

Output Schema

TableJSON Schema

Name	Required	Description	Default
`status`	Yes
`next_step`	Yes
`next_step_url`	Yes
`why_follow_up`	Yes
`interpretation`	Yes
`saturation_pct`	Yes
`affiliate_context`	No
`computation_basis`	Yes
`per_app_pool_size`	Yes
`peak_concurrent_demand`	Yes
`recommended_pool_total`	Yes
`estimated_connection_memory_mb`	Yes

Schema Changelog

Changes observed during successful MCP inspections.

Changed20 schema fields changedSep 28, 2026

removedInput schema / properties / app_instances
```
Removed value: -{
-  "type": "number"
-}
```

addedInput schema / properties / app_servers

Added value: +{
+  "description": "app servers used by this deterministic tool.",
+  "examples": [
+    1
+  ],
+  "minimum": 1,
+  "type": "number"
+}

addedInput schema / properties / avg_query_ms

Added value: +{
+  "description": "avg query ms used by this deterministic tool.",
+  "examples": [
+    1
+  ],
+  "minimum": 0,
+  "type": "number"
+}

removedInput schema / properties / cpu_cores
```
Removed value: -{
-  "type": "number"
-}
```

addedInput schema / properties / db_cores

Added value: +{
+  "description": "db cores used by this deterministic tool.",
+  "examples": [
+    1
+  ],
+  "minimum": 1,
+  "type": "number"
+}

addedInput schema / properties / max_connections / description

Added value: +"max connections used by this deterministic tool."

addedInput schema / properties / max_connections / examples
```
Added value: +[
+  1
+]
```
addedInput schema / properties / max_connections / minimum
```
Added value: +1
```

addedInput schema / properties / peak_rps

Added value: +{
+  "description": "peak rps used by this deterministic tool.",
+  "examples": [
+    1
+  ],
+  "minimum": 0,
+  "type": "number"
+}

changedInput schema / required

Previous value: -[
-  "cpu_cores"
-]New value: +[
+  "max_connections",
+  "app_servers",
+  "db_cores",
+  "avg_query_ms",
+  "peak_rps"
+]

addedOutput schema / properties / computation_basis
```
Added value: +{
+  "type": "string"
+}
```
addedOutput schema / properties / estimated_connection_memory_mb
```
Added value: +{
+  "type": "number"
+}
```
removedOutput schema / properties / max_connections_utilization_pct
```
Removed value: -{}
```
addedOutput schema / properties / peak_concurrent_demand
```
Added value: +{
+  "type": "number"
+}
```
removedOutput schema / properties / per_app_instance
```
Removed value: -{
-  "type": "number"
-}
```
addedOutput schema / properties / per_app_pool_size
```
Added value: +{
+  "type": "number"
+}
```
addedOutput schema / properties / saturation_pct
```
Added value: +{
+  "type": "number"
+}
```
addedOutput schema / properties / status
```
Added value: +{
+  "type": "string"
+}
```

removedOutput schema / properties / warning

Removed value: -{
-  "type": "boolean"
-}

changedOutput schema / required

Previous value: -[
-  "interpretation",
-  "next_step",
-  "next_step_url",
-  "per_app_instance",
-  "recommended_pool_total",
-  "warning",
-  "why_follow_up"
-]New value: +[
+  "computation_basis",
+  "estimated_connection_memory_mb",
+  "interpretation",
+  "next_step",
+  "next_step_url",
+  "peak_concurrent_demand",
+  "per_app_pool_size",
+  "recommended_pool_total",
+  "saturation_pct",
+  "status",
+  "why_follow_up"
+]

Changed1 schema field changedJul 15, 2026

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "additionalProperties": false,
+  "properties": {
+    "affiliate_context": {
+      "additionalProperties": false,
+      "properties": {
+        "affiliate": {
+          "type": "string"
+        },
+        "cta_label": {
+          "type": "string"
+        },
+        "disclosure": {
+          "type": "string"
+        },
+        "framing": {
+          "type": "string"
+        },
+        "posture": {
+          "enum": [
+            "secondary"
+          ],
+          "type": "string"
+        },
+        "slot_id": {
+          "type": "string"
+        },
+        "url": {
+          "type": "string"
+        },
+        "variant": {
+          "type": "string"
+        }
+      },
+      "required": [
+        "affiliate",
+        "cta_label",
+        "disclosure",
+        "framing",
+        "posture",
+        "slot_id",
+        "url",
+        "variant"
+      ],
+      "type": "object"
+    },
+    "interpretation": {
+      "type": "string"
+    },
+    "max_connections_utilization_pct": {},
+    "next_step": {
+      "type": "string"
+    },
+    "next_step_url": {
+      "type": "string"
+    },
+    "per_app_instance": {
+      "type": "number"
+    },
+    "recommended_pool_total": {
+      "type": "number"
+    },
+    "warning": {
+      "type": "boolean"
+    },
+    "why_follow_up": {
+      "type": "string"
+    }
+  },
+  "required": [
+    "interpretation",
+    "next_step",
+    "next_step_url",
+    "per_app_instance",
+    "recommended_pool_total",
+    "warning",
+    "why_follow_up"
+  ],
+  "type": "object"
+}

Changed1 schema field changedJul 13, 2026
- addedInput schema / additionalProperties
```
Added value: +false
```
First observedJun 29, 2026

TDQS

Score is being calculated.

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