ALPNAI — Agent Performance Tools

Spend Proof cost analysis

audit_agent_costs

Read-only

Free comparison of cost per successful task on supplied paired traces. Requires a sandbox agent key. No purchase, storage, external model call or automatic deployment. Success labels are supplied by the client.

Input Schema

TableJSON Schema

Name	Required	Description	Default
`runs`	Yes
`config`	No

Output Schema

TableJSON Schema

Name	Required	Description	Default
`config`	Yes
`purpose`	Yes
`workflows`	Yes
`methodology`	Yes
`schema_version`	Yes
`data_provenance`	Yes
`input_attempt_records`	Yes
`experimental_bias_control`	Yes
`automatic_deployment_authorized`	Yes

Schema Changelog

Changes observed during successful MCP inspections.

Changed9 schema fields changedSep 14, 2026

addedInput schema / description

Added value: +"Recorded attempts, not prompts or secrets. Identical rows count as separate attempts. All three analysis tools accept this same input. The runtime validator additionally enforces six-decimal micro-USD precision, the same task_id belonging to one workflow, one workflow when monthlyTasks is given, and UTF-16 length limits. HTTP body limit: 512000 UTF-8 bytes."

addedInput schema / properties / config / additionalProperties
```
Added value: +false
```

addedInput schema / properties / config / properties

Added value: +{
+  "maxP95LatencyMs": {
+    "maximum": 86400000000,
+    "minimum": 0,
+    "type": "number"
+  },
+  "maxSuccessRateDrop": {
+    "default": 0.02,
+    "maximum": 1,
+    "minimum": 0,
+    "type": "number"
+  },
+  "minSamples": {
+    "default": 30,
+    "maximum": 500,
+    "minimum": 2,
+    "type": "integer"
+  },
+  "minSuccessRate": {
+    "default": 0.95,
+    "maximum": 1,
+    "minimum": 0,
+    "type": "number"
+  },
+  "monthlyTasks": {
+    "description": "Baseline logical tasks launched per month; the engine requires exactly one workflow if supplied.",
+    "maximum": 1000000,
+    "minimum": 1,
+    "type": "integer"
+  }
+}

addedInput schema / properties / config / required
```
Added value: +[]
```
addedInput schema / properties / runs / items / additionalProperties
```
Added value: +false
```

addedInput schema / properties / runs / items / properties

Added value: +{
+  "cost_usd": {
+    "description": "USD cost of this attempt. At most six decimal places; the engine verifies whole micro-USD using floating-point tolerance. No multipleOf keyword is used, to avoid rejecting valid JSON decimals.",
+    "maximum": 10000,
+    "minimum": 0,
+    "type": "number"
+  },
+  "latency_ms": {
+    "description": "Recorded attempt duration in milliseconds; decimals are accepted. Omit if not measured.",
+    "maximum": 86400000,
+    "minimum": 0,
+    "type": "number"
+  },
+  "success": {
+    "type": "boolean"
+  },
+  "task_id": {
+    "description": "Nonempty, no control characters or surrounding whitespace. The engine additionally enforces at most 128 UTF-16 code units.",
+    "maxLength": 128,
+    "minLength": 1,
+    "pattern": "^(?!\\s)(?![\\s\\S]*\\s$)[^\\u0000-\\u001F\\u007F]+$",
+    "type": "string"
+  },
+  "variant": {
+    "enum": [
+      "baseline",
+      "candidate"
+    ],
+    "type": "string"
+  },
+  "workflow": {
+    "description": "Nonempty, no control characters or surrounding whitespace. The engine additionally enforces at most 80 UTF-16 code units.",
+    "maxLength": 80,
+    "minLength": 1,
+    "pattern": "^(?!\\s)(?![\\s\\S]*\\s$)[^\\u0000-\\u001F\\u007F]+$",
+    "type": "string"
+  }
+}

addedInput schema / properties / runs / items / required

Added value: +[
+  "task_id",
+  "workflow",
+  "variant",
+  "cost_usd",
+  "success"
+]

addedInput schema / title

Added value: +"ALPNAI recorded agent attempts"

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "additionalProperties": true,
+  "properties": {
+    "automatic_deployment_authorized": {
+      "const": false,
+      "type": "boolean"
+    },
+    "config": {
+      "additionalProperties": true,
+      "properties": {
+        "maxP95LatencyMs": {
+          "maximum": 86400000000,
+          "minimum": 0,
+          "type": "number"
+        },
+        "maxSuccessRateDrop": {
+          "default": 0.02,
+          "maximum": 1,
+          "minimum": 0,
+          "type": "number"
+        },
+        "minSamples": {
+          "default": 30,
+          "maximum": 500,
+          "minimum": 2,
+          "type": "integer"
+        },
+        "minSuccessRate": {
+          "default": 0.95,
+          "maximum": 1,
+          "minimum": 0,
+          "type": "number"
+        },
+        "monthlyTasks": {
+          "description": "Baseline logical tasks launched per month; the engine requires exactly one workflow if supplied.",
+          "maximum": 1000000,
+          "minimum": 1,
+          "type": "integer"
+        }
+      },
+      "required": [
+        "minSamples",
+        "minSuccessRate",
+        "maxSuccessRateDrop"
+      ],
+      "type": "object"
+    },
+    "data_provenance": {
+      "const": "user_supplied_not_verified",
+      "type": "string"
+    },
+    "experimental_bias_control": {
+      "const": "unknown",
+      "type": "string"
+    },
+    "input_attempt_records": {
+      "maximum": 1000,
+      "minimum": 1,
+      "type": "integer"
+    },
+    "methodology": {
+      "additionalProperties": true,
+      "properties": {
+        "duplicates": {
+          "type": "string"
+        },
+        "latency": {
+          "type": "string"
+        },
+        "logical_task_key": {
+          "items": {
+            "type": "string"
+          },
+          "maxItems": 3,
+          "minItems": 3,
+          "type": "array"
+        },
+        "missing_costs": {
+          "type": "string"
+        },
+        "quality": {
+          "type": "string"
+        },
+        "success": {
+          "type": "string"
+        },
+        "uncertainty": {
+          "type": "string"
+        }
+      },
+      "required": [
+        "logical_task_key",
+        "success",
+        "duplicates",
+        "latency",
+        "quality",
+        "uncertainty",
+        "missing_costs"
+      ],
+      "type": "object"
+    },
+    "purpose": {
+      "const": "cost_per_successful_agent_task_audit",
+      "type": "string"
+    },
+    "schema_version": {
+      "const": "1.0.0",
+      "type": "string"
+    },
+    "workflows": {
+      "items": {
+        "additionalProperties": true,
+        "properties": {
+          "automatic_deployment_authorized": {
+            "const": false,
+            "type": "boolean"
+          },
+          "baseline": {
+            "anyOf": [
+              {
+                "additionalProperties": true,
+                "properties": {
+                  "attempts": {
+                    "maximum": 1000,
+                    "minimum": 1,
+                    "type": "integer"
+                  },
+                  "cost_per_successful_task_usd": {
+                    "anyOf": [
+                      {
+                        "minimum": 0,
+                        "type": "number"
+                      },
+                      {
+                        "type": "null"
+                      }
+                    ]
+                  },
+                  "cost_per_task_usd": {
+                    "minimum": 0,
+                    "type": "number"
+                  },
+                  "latency_complete": {
+                    "type": "boolean"
+                  },
+                  "p95_recorded_attempt_latency_per_task_ms": {
+                    "anyOf": [
+                      {
+                        "maximum": 86400000000,
+                        "minimum": 0,
+                        "type": "number"
+                      },
+                      {
+                        "type": "null"
+                      }
+                    ]
+                  },
+                  "retry_attempts": {
+                    "maximum": 999,
+                    "minimum": 0,
+                    "type": "integer"
+                  },
+                  "success_rate": {
+                    "maximum": 1,
+                    "minimum": 0,
+                    "type": "number"
+                  },
+                  "success_rate_interval_95_wilson": {
+                    "items": {
+                      "maximum": 1,
+                      "minimum": 0,
+                      "type": "number"
+                    },
+                    "maxItems": 2,
+                    "minItems": 2,
+                    "type": "array"
+                  },
+                  "successful_tasks": {
+                    "maximum": 1000,
+                    "minimum": 0,
+                    "type": "integer"
+                  },
+                  "tasks": {
+                    "maximum": 1000,
+                    "minimum": 1,
+                    "type": "integer"
+                  },
+                  "total_cost_usd": {
+                    "minimum": 0,
+                    "type": "number"
+                  }
+                },
+                "required": [
+                  "tasks",
+                  "attempts",
+                  "retry_attempts",
+                  "successful_tasks",
+                  "total_cost_usd",
+                  "cost_per_task_usd",
+                  "cost_per_successful_task_usd",
+                  "success_rate",
+                  "success_rate_interval_95_wilson",
+                  "p95_recorded_attempt_latency_per_task_ms",
+                  "latency_complete"
+                ],
+                "type": "object"
+              },
+              {
+                "type": "null"
+              }
+            ]
+          },
+          "candidate": {
+            "anyOf": [
+              {
+                "additionalProperties": true,
+                "properties": {
+                  "attempts": {
+                    "maximum": 1000,
+                    "minimum": 1,
+                    "type": "integer"
+                  },
+                  "cost_per_successful_task_usd": {
+                    "anyOf": [
+                      {
+                        "minimum": 0,
+                        "type": "number"
+                      },
+                      {
+                        "type": "null"
+                      }
+                    ]
+                  },
+                  "cost_per_task_usd": {
+                    "minimum": 0,
+                    "type": "number"
+                  },
+                  "latency_complete": {
+                    "type": "boolean"
+                  },
+                  "p95_recorded_attempt_latency_per_task_ms": {
+                    "anyOf": [
+                      {
+                        "maximum": 86400000000,
+                        "minimum": 0,
+                        "type": "number"
+                      },
+                      {
+                        "type": "null"
+                      }
+                    ]
+                  },
+                  "retry_attempts": {
+                    "maximum": 999,
+                    "minimum": 0,
+                    "type": "integer"
+                  },
+                  "success_rate": {
+                    "maximum": 1,
+                    "minimum": 0,
+                    "type": "number"
+                  },
+                  "success_rate_interval_95_wilson": {
+                    "items": {
+                      "maximum": 1,
+                      "minimum": 0,
+                      "type": "number"
+                    },
+                    "maxItems": 2,
+                    "minItems": 2,
+                    "type": "array"
+                  },
+                  "successful_tasks": {
+                    "maximum": 1000,
+                    "minimum": 0,
+                    "type": "integer"
+                  },
+                  "tasks": {
+                    "maximum": 1000,
+                    "minimum": 1,
+                    "type": "integer"
+                  },
+                  "total_cost_usd": {
+                    "minimum": 0,
+                    "type": "number"
+                  }
+                },
+                "required": [
+                  "tasks",
+                  "attempts",
+                  "retry_attempts",
+                  "successful_tasks",
+                  "total_cost_usd",
+                  "cost_per_task_usd",
+                  "cost_per_successful_task_usd",
+                  "success_rate",
+                  "success_rate_interval_95_wilson",
+                  "p95_recorded_attempt_latency_per_task_ms",
+                  "latency_complete"
+                ],
+                "type": "object"
+              },
+              {
+                "type": "null"
+              }
+            ]
+          },
+          "comparison": {
+            "additionalProperties": true,
+            "properties": {
+              "baseline_only_tasks": {
+                "maximum": 1000,
+                "minimum": 0,
+                "type": "integer"
+              },
+              "candidate_only_tasks": {
+                "maximum": 1000,
+                "minimum": 0,
+                "type": "integer"
+              },
+              "matched_task_ids": {
+                "maximum": 1000,
+                "minimum": 0,
+                "type": "integer"
+              },
+              "same_task_set": {
+                "type": "boolean"
+              }
+            },
+            "required": [
+              "matched_task_ids",
+              "baseline_only_tasks",
+              "candidate_only_tasks",
+              "same_task_set"
+            ],
+            "type": "object"
+          },
+          "decision": {
+            "enum": [
+              "missing_comparison",
+              "collect_more_data",
+              "quality_regression",
+              "latency_data_required",
+              "latency_regression",
+              "no_economic_advantage",
+              "candidate_for_controlled_trial"
+            ],
+            "type": "string"
+          },
+          "gates": {
+            "additionalProperties": true,
+            "properties": {
+              "both_variants": {
+                "enum": [
+                  "pass",
+                  "fail",
+                  "unknown",
+                  "not_requested"
+                ],
+                "type": "string"
+              },
+              "experimental_bias_control": {
+                "const": "unknown",
+                "type": "string"
+              },
+              "lower_cost_per_successful_task": {
+                "enum": [
+                  "pass",
+                  "fail",
+                  "unknown",
+                  "not_requested"
+                ],
+                "type": "string"
+              },
+              "minimum_distinct_tasks_per_variant": {
+                "enum": [
+                  "pass",
+                  "fail",
+                  "unknown",
+                  "not_requested"
+                ],
+                "type": "string"
+              },
+              "observed_success_rate": {
+                "enum": [
+                  "pass",
+                  "fail",
+                  "unknown",
+                  "not_requested"
+                ],
+                "type": "string"
+              },
+              "recorded_latency": {
+                "enum": [
+                  "pass",
+                  "fail",
+                  "unknown",
+                  "not_requested"
+                ],
+                "type": "string"
+              },
+              "same_task_set": {
+                "enum": [
+                  "pass",
+                  "fail",
+                  "unknown",
+                  "not_requested"
+                ],
+                "type": "string"
+              }
+            },
+            "required": [
+              "both_variants",
+              "minimum_distinct_tasks_per_variant",
+              "same_task_set",
+              "observed_success_rate",
+              "recorded_latency",
+              "lower_cost_per_successful_task",
+              "experimental_bias_control"
+            ],
+            "type": "object"
+          },
+          "opportunity_monthly": {
+            "anyOf": [
+              {
+                "additionalProperties": true,
+                "properties": {
+                  "baseline_expected_cost_usd": {
+                    "minimum": 0,
+                    "type": "number"
+                  },
+                  "baseline_launched_tasks_per_month": {
+                    "maximum": 1000000,
+                    "minimum": 1,
+                    "type": "integer"
+                  },
+                  "basis": {
+                    "const": "same_expected_successful_task_volume",
+                    "type": "string"
+                  },
+                  "candidate_expected_cost_usd": {
+                    "minimum": 0,
+                    "type": "number"
+                  },
+                  "candidate_expected_launched_tasks_per_month": {
+                    "minimum": 0,
+                    "type": "number"
+                  },
+                  "conditions": {
+                    "items": {
+                      "type": "string"
+                    },
+                    "minItems": 1,
+                    "type": "array"
+                  },
+                  "currency": {
+                    "const": "USD",
+                    "type": "string"
+                  },
+                  "excludes": {
+                    "items": {
+                      "type": "string"
+                    },
+                    "minItems": 1,
+                    "type": "array"
+                  },
+                  "expected_successful_tasks_per_month": {
+                    "minimum": 0,
+                    "type": "number"
+                  },
+                  "period": {
+                    "const": "month",
+                    "type": "string"
+                  },
+                  "potential_cost_difference_usd": {
+                    "minimum": 0,
+                    "type": "number"
+                  },
+                  "status": {
+                    "const": "conditional_projection_not_realized",
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "status",
+                  "basis",
+                  "currency",
+                  "period",
+                  "baseline_launched_tasks_per_month",
+                  "expected_successful_tasks_per_month",
+                  "candidate_expected_launched_tasks_per_month",
+                  "baseline_expected_cost_usd",
+                  "candidate_expected_cost_usd",
+                  "potential_cost_difference_usd",
+                  "excludes",
+                  "conditions"
+                ],
+                "type": "object"
+              },
+              {
+                "type": "null"
+              }
+            ]
+          },
+          "realized_savings_usd": {
+            "type": "null"
+          },
+          "workflow": {
+            "description": "Nonempty, no control characters or surrounding whitespace. The engine additionally enforces at most 80 UTF-16 code units.",
+            "maxLength": 80,
+            "minLength": 1,
+            "pattern": "^(?!\\s)(?![\\s\\S]*\\s$)[^\\u0000-\\u001F\\u007F]+$",
+            "type": "string"
+          }
+        },
+        "required": [
+          "workflow",
+          "baseline",
+          "candidate",
+          "comparison",
+          "gates",
+          "decision",
+          "automatic_deployment_authorized",
+          "realized_savings_usd",
+          "opportunity_monthly"
+        ],
+        "type": "object"
+      },
+      "maxItems": 1000,
+      "minItems": 1,
+      "type": "array"
+    }
+  },
+  "required": [
+    "schema_version",
+    "purpose",
+    "data_provenance",
+    "config",
+    "input_attempt_records",
+    "experimental_bias_control",
+    "automatic_deployment_authorized",
+    "methodology",
+    "workflows"
+  ],
+  "type": "object"
+}

First observedSep 14, 2026

TDQS

A4.1/5.0

Behavior4/5

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

The annotations already provide readOnlyHint=true, and the description adds concrete behavioral specifics: no purchase, storage, external model call, or automatic deployment. It also discloses the authentication requirement (sandbox agent key) and that success labels are client-supplied. These are valuable details beyond the annotation.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Three sentences, each serving a distinct purpose: core function, prerequisite, and behavioral constraints. No filler, and the primary purpose is front-loaded. Every sentence earns its place.

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?

It covers operational prerequisites and side effects (free, no storage, requires key). However, it does not explicitly mention the baseline/candidate pairing or the config options, though the rich schema and output schema reduce the burden. It is mostly complete but could be clearer about the input structure.

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

Parameters2/5

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

Schema description coverage is 0%, so the description must compensate, but it only vaguely mentions 'paired traces' without explaining the runs, config, variant, or cost fields. The schema itself contains detailed field descriptions, but the tool description adds no parameter-level guidance, leaving an agent to rely solely on the schema.

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 clearly states the tool's action ('comparison of cost per successful task') and its input ('supplied paired traces'). This distinguishes it from sibling tools like analyze_agent_latency (latency analysis) and check_agent_quality (quality checks), making it unambiguous what this tool does.

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?

It explicitly lists prerequisites: a sandbox agent key and client-supplied success labels. The 'Free' and 'No purchase' phrasing implies this is a no-cost evaluation tool compared to the purchase_* siblings, though it does not explicitly name alternatives or state when to choose this over them. That is a minor gap.

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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