AINumbers Fintech Intelligence Suite

Publish Model Risk Head

publish_model_risk_head

Read-onlyIdempotent

Publish Model Risk Head: OpenChainGraph compute node (attestation_mandate). Deterministic OpenChainGraph compute node. By default (compute:"auto") inputs are computed server-side on Cloudflare Workers for gpu:false nodes with a registered kernel; compute:"browser" forces client-side execution and returns a browser delegation URL instead. gpu:true nodes always delegate to the browser. Inputs are processed transiently to compute the response and are not stored, logged, or retained. Use synthetic or anonymised inputs only. Exports an AP2 artifact with execution_hash for chain provenance. Consumes upstream artifacts from: art-453-model-validation-status, art-489-model-test-battery, art-562-compile-model-risk-lineage-pack. Open at: https://ainumbers.co/chaingraph/art-649-publish-model-risk-head.html FV-status (published/proven/still-trusted for this spec): /fv-status/ca4e1dca8343f788a296161f0e19712f7afb7e5eaec0431081e715a4cc34b784.json — a snapshot, not a subscription; this receipt verifies offline regardless of whether that file is ever fetched. Summary: Publishes one SPEC.md §HEAD-1 head-commit publication event for a model's revalidation-history stream, so a model's validation history (art-453/art-489 results, or art-562/art-648 lineage artifacts) becomes a sequence-numbered, signer-continuous chain instead of a series of unlinked artifacts a r... Outputs: chain_errors, chain_valid, chain_verified_by, fence, head_hash, is_genesis, not_proven, prev_head_hash, regulatory_framework, root, rotates_to, seq, signature_valid, signature_verified_by, signer, stream, structural_error, timestamp. Output schema: call describe_tool("publish_model_risk_head").

Input Schema

Name	Required	Description
`compute`	No	Compute mode (v0.4 Compute Binding). "auto" (default) = server for gpu:false nodes with registered kernels; "server" = force server-side; "browser" = always return browser delegation URL. gpu:true nodes always delegate.
`parent_hashes`	No	execution_hash values from upstream ChainGraph AP2 artifacts to chain from (sets chain.parent_hashes in the export).
`parent_tool_ids`	No	tool_id values matching parent_hashes, in the same order.
`policy_parameters`	No	Input parameters for this tool's decision function. For gpu:false nodes with a registered kernel, these are computed server-side when compute is "auto" or "server". Required: chain_verification, head, prior_head, signature_verification. Unknown keys are refused.

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedOct 22, 2026

changedInput schema / $schema

Previous value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"

Changed3 schema fields changedOct 19, 2026

changedInput schema / properties / policy_parameters / description

Previous value: -"Input parameters for this tool's decision function. For gpu:false nodes with a registered kernel, these are computed server-side when compute is \"auto\" or \"server\". See the tool's manifest for field names."New value: +"Input parameters for this tool's decision function. For gpu:false nodes with a registered kernel, these are computed server-side when compute is \"auto\" or \"server\". Required: chain_verification, head, prior_head, signature_verification. Unknown keys are refused."

addedInput schema / properties / policy_parameters / properties

Added value: +{
+  "chain_verification": {
+    "type": "array"
+  },
+  "head": {},
+  "prior_head": {},
+  "signature_verification": {}
+}

removedInput schema / properties / policy_parameters / propertyNames
```
Removed value: -{
-  "type": "string"
-}
```

Changed1 schema field changedSep 18, 2026

changedOutput schema / (root)

Previous value: -{
-  "additionalProperties": false,
-  "properties": {
-    "chain_errors": {
-      "type": "array"
-    },
-    "chain_valid": {
-      "type": [
-        "null",
-        "boolean"
-      ]
-    },
-    "chain_verified_by": {
-      "type": [
-        "null",
-        "string"
-      ]
-    },
-    "fence": {
-      "type": "string"
-    },
-    "head_hash": {
-      "type": [
-        "null",
-        "string"
-      ]
-    },
-    "is_genesis": {
-      "enum": [
-        false,
-        true
-      ],
-      "type": "boolean"
-    },
-    "not_proven": {
-      "items": {
-        "additionalProperties": false,
-        "properties": {
-          "detail": {
-            "type": "string"
-          },
-          "item": {
-            "type": "string"
-          }
-        },
-        "required": [
-          "detail",
-          "item"
-        ],
-        "type": "object"
-      },
-      "type": "array"
-    },
-    "prev_head_hash": {
-      "type": [
-        "null",
-        "string"
-      ]
-    },
-    "regulatory_framework": {
-      "type": "string"
-    },
-    "root": {
-      "type": [
-        "null",
-        "string"
-      ]
-    },
-    "rotates_to": {
-      "type": [
-        "null",
-        "string"
-      ]
-    },
-    "seq": {
-      "type": [
-        "null",
-        "number"
-      ]
-    },
-    "signature_valid": {
-      "type": [
-        "null",
-        "boolean"
-      ]
-    },
-    "signature_verified_by": {
-      "type": [
-        "null",
-        "string"
-      ]
-    },
-    "signer": {
-      "type": [
-        "null",
-        "string"
-      ]
-    },
-    "stream": {
-      "type": [
-        "null",
-        "string"
-      ]
-    },
-    "structural_error": {
-      "type": [
-        "string",
-        "null"
-      ]
-    },
-    "timestamp": {
-      "type": [
-        "null",
-        "string"
-      ]
-    }
-  },
-  "required": [
-    "chain_errors",
-    "chain_valid",
-    "chain_verified_by",
-    "fence",
-    "head_hash",
-    "is_genesis",
-    "not_proven",
-    "prev_head_hash",
-    "regulatory_framework",
-    "root",
-    "rotates_to",
-    "seq",
-    "signature_valid",
-    "signature_verified_by",
-    "signer",
-    "stream",
-    "structural_error",
-    "timestamp"
-  ],
-  "type": "object"
-}New value: +null

Changed1 schema field changedSep 5, 2026

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "additionalProperties": false,
+  "properties": {
+    "chain_errors": {
+      "type": "array"
+    },
+    "chain_valid": {
+      "type": [
+        "null",
+        "boolean"
+      ]
+    },
+    "chain_verified_by": {
+      "type": [
+        "null",
+        "string"
+      ]
+    },
+    "fence": {
+      "type": "string"
+    },
+    "head_hash": {
+      "type": [
+        "null",
+        "string"
+      ]
+    },
+    "is_genesis": {
+      "enum": [
+        false,
+        true
+      ],
+      "type": "boolean"
+    },
+    "not_proven": {
+      "items": {
+        "additionalProperties": false,
+        "properties": {
+          "detail": {
+            "type": "string"
+          },
+          "item": {
+            "type": "string"
+          }
+        },
+        "required": [
+          "detail",
+          "item"
+        ],
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "prev_head_hash": {
+      "type": [
+        "null",
+        "string"
+      ]
+    },
+    "regulatory_framework": {
+      "type": "string"
+    },
+    "root": {
+      "type": [
+        "null",
+        "string"
+      ]
+    },
+    "rotates_to": {
+      "type": [
+        "null",
+        "string"
+      ]
+    },
+    "seq": {
+      "type": [
+        "null",
+        "number"
+      ]
+    },
+    "signature_valid": {
+      "type": [
+        "null",
+        "boolean"
+      ]
+    },
+    "signature_verified_by": {
+      "type": [
+        "null",
+        "string"
+      ]
+    },
+    "signer": {
+      "type": [
+        "null",
+        "string"
+      ]
+    },
+    "stream": {
+      "type": [
+        "null",
+        "string"
+      ]
+    },
+    "structural_error": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "timestamp": {
+      "type": [
+        "null",
+        "string"
+      ]
+    }
+  },
+  "required": [
+    "chain_errors",
+    "chain_valid",
+    "chain_verified_by",
+    "fence",
+    "head_hash",
+    "is_genesis",
+    "not_proven",
+    "prev_head_hash",
+    "regulatory_framework",
+    "root",
+    "rotates_to",
+    "seq",
+    "signature_valid",
+    "signature_verified_by",
+    "signer",
+    "stream",
+    "structural_error",
+    "timestamp"
+  ],
+  "type": "object"
+}

AddedAug 18, 2026

TDQS

A3.8/5.0

Behavior1/5

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

There is a direct contradiction between the description ('Publishes one SPEC.md head-commit publication event') and the annotation `readOnlyHint: true`. Furthermore, while it provides rich behavioral detail (e.g., transient processing, Cloudflare Workers, AP2 artifact export), the critical contradiction renders this score severely low.

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

Conciseness2/5

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

The description is excessively verbose and highly dense, mixing operational notes, security constraints, and academic jargon into a single, unstructured wall of text. This complexity hinders quick agent comprehension and violates the principle of conciseness.

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?

Given the immense complexity of the Domain (OpenChainGraph, AP2, validation streams), the description is remarkably comprehensive. It covers the compute model, input dependencies, data retention policy, execution environment, and output expectations, leaving virtually no structural detail missing.

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

Parameters4/5

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

With schema coverage at 100%, the description's value lies in providing high-level semantic context beyond mere data types. It explains the operational implications of the `compute` enum and the necessity of upstream artifacts, helping the agent understand *why* the inputs are needed, even if the schema defines *what* they are.

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 purpose is extremely specific, clearly identifying the action ('Publishes') and the target resource ('SPEC.md §HEAD-1 head-commit publication event'). It clearly situates the tool within a broader validation history stream.

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?

The description provides extensive usage guidance by outlining the behavioral consequences of the `compute` parameter (`auto`, `server`, `browser`), defining constraints (synthetic/anonymized inputs only), and specifying the transient data lifecycle.

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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Publish Model Risk Head

Input Schema

Schema Changelog

TDQS

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