AINumbers Fintech Intelligence Suite

Exchange Access-Fee / Maker-Taker Tier Recompute

recompute_exchange_fee_tier_invoice

Read-onlyIdempotent

Exchange Access-Fee / Maker-Taker Tier Recompute: OpenChainGraph compute node (compliance_control). 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. Open at: https://ainumbers.co/chaingraph/art-577-exchange-fee-tier-recompute.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: Recomputes a monthly exchange maker-taker invoice from a caller-pasted fee schedule: resolves the firm's active tier from its declared prior-period average daily volume (ADV), applies that tier's maker rebate and taker access-fee rate to the declared monthly maker/taker share totals, and diffs th... Outputs: active_tier, cap_check, cap_verdict, claimed_invoice_micros, clause_note, decision, diff_micros, fee_schedule_summary, findings, invoice_period, invoice_verdict, prior_period_adv_shares, recompute_tolerance_micros, recomputed_invoice_micros, rejected_inputs, scope_note, tiers, volume_summary. Output schema: call describe_tool("recompute_exchange_fee_tier_invoice").

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: claimed_invoice_micros, fee_schedule, invoice_period, prior_period_adv_shares, recompute_tolerance_micros, volume_lines. 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: claimed_invoice_micros, fee_schedule, invoice_period, prior_period_adv_shares, recompute_tolerance_micros, volume_lines. Unknown keys are refused."

addedInput schema / properties / policy_parameters / properties

Added value: +{
+  "claimed_invoice_micros": {},
+  "fee_schedule": {},
+  "invoice_period": {},
+  "prior_period_adv_shares": {},
+  "recompute_tolerance_micros": {},
+  "volume_lines": {
+    "type": "array"
+  }
+}

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

Changed1 schema field changedSep 18, 2026

changedOutput schema / (root)

Previous value: -{
-  "properties": {
-    "active_tier": {
-      "properties": {
-        "maker_rate_micros_per_share": {
-          "type": "integer"
-        },
-        "min_adv_shares": {
-          "type": "integer"
-        },
-        "taker_rate_micros_per_share": {
-          "type": "integer"
-        },
-        "tier_id": {
-          "type": "string"
-        }
-      },
-      "type": "object"
-    },
-    "cap_check": {
-      "properties": {
-        "cap_micros_per_share": {
-          "type": "integer"
-        },
-        "quotes_priced_ge_1usd": {
-          "type": "boolean"
-        },
-        "tier_findings": {
-          "items": {
-            "properties": {
-              "exceeds_cap": {
-                "type": "boolean"
-              },
-              "taker_rate_micros_per_share": {
-                "type": "integer"
-              },
-              "tier_id": {
-                "type": "string"
-              }
-            },
-            "type": "object"
-          },
-          "type": "array"
-        }
-      },
-      "type": "object"
-    },
-    "cap_verdict": {
-      "type": "string"
-    },
-    "claimed_invoice_micros": {
-      "type": "integer"
-    },
-    "clause_note": {
-      "type": "string"
-    },
-    "decision": {
-      "properties": {
-        "execution_state": {
-          "type": "string"
-        },
-        "gate_policy": {
-          "type": "string"
-        },
-        "reason": {
-          "type": "string"
-        }
-      },
-      "type": "object"
-    },
-    "diff_micros": {
-      "type": "integer"
-    },
-    "fee_schedule_summary": {
-      "properties": {
-        "effective_date": {
-          "type": "string"
-        },
-        "quotes_priced_ge_1usd": {
-          "type": "boolean"
-        },
-        "schedule_id": {
-          "type": "string"
-        },
-        "tier_count": {
-          "type": "integer"
-        }
-      },
-      "type": "object"
-    },
-    "findings": {
-      "type": "array"
-    },
-    "invoice_period": {
-      "properties": {
-        "end_date": {
-          "type": "string"
-        },
-        "start_date": {
-          "type": "string"
-        }
-      },
-      "type": "object"
-    },
-    "invoice_verdict": {
-      "type": "string"
-    },
-    "prior_period_adv_shares": {
-      "type": "integer"
-    },
-    "recompute_tolerance_micros": {
-      "type": "integer"
-    },
-    "recomputed_invoice_micros": {
-      "type": "integer"
-    },
-    "rejected_inputs": {
-      "type": "array"
-    },
-    "scope_note": {
-      "type": "string"
-    },
-    "tiers": {
-      "items": {
-        "properties": {
-          "maker_rate_micros_per_share": {
-            "type": "integer"
-          },
-          "min_adv_shares": {
-            "type": "integer"
-          },
-          "taker_rate_micros_per_share": {
-            "type": "integer"
-          },
-          "tier_id": {
-            "type": "string"
-          }
-        },
-        "type": "object"
-      },
-      "type": "array"
-    },
-    "volume_summary": {
-      "properties": {
-        "line_count": {
-          "type": "integer"
-        },
-        "maker_shares_total": {
-          "type": "integer"
-        },
-        "taker_shares_total": {
-          "type": "integer"
-        }
-      },
-      "type": "object"
-    }
-  },
-  "type": "object"
-}New value: +null

Changed1 schema field changedSep 3, 2026

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "properties": {
+    "active_tier": {
+      "properties": {
+        "maker_rate_micros_per_share": {
+          "type": "integer"
+        },
+        "min_adv_shares": {
+          "type": "integer"
+        },
+        "taker_rate_micros_per_share": {
+          "type": "integer"
+        },
+        "tier_id": {
+          "type": "string"
+        }
+      },
+      "type": "object"
+    },
+    "cap_check": {
+      "properties": {
+        "cap_micros_per_share": {
+          "type": "integer"
+        },
+        "quotes_priced_ge_1usd": {
+          "type": "boolean"
+        },
+        "tier_findings": {
+          "items": {
+            "properties": {
+              "exceeds_cap": {
+                "type": "boolean"
+              },
+              "taker_rate_micros_per_share": {
+                "type": "integer"
+              },
+              "tier_id": {
+                "type": "string"
+              }
+            },
+            "type": "object"
+          },
+          "type": "array"
+        }
+      },
+      "type": "object"
+    },
+    "cap_verdict": {
+      "type": "string"
+    },
+    "claimed_invoice_micros": {
+      "type": "integer"
+    },
+    "clause_note": {
+      "type": "string"
+    },
+    "decision": {
+      "properties": {
+        "execution_state": {
+          "type": "string"
+        },
+        "gate_policy": {
+          "type": "string"
+        },
+        "reason": {
+          "type": "string"
+        }
+      },
+      "type": "object"
+    },
+    "diff_micros": {
+      "type": "integer"
+    },
+    "fee_schedule_summary": {
+      "properties": {
+        "effective_date": {
+          "type": "string"
+        },
+        "quotes_priced_ge_1usd": {
+          "type": "boolean"
+        },
+        "schedule_id": {
+          "type": "string"
+        },
+        "tier_count": {
+          "type": "integer"
+        }
+      },
+      "type": "object"
+    },
+    "findings": {
+      "type": "array"
+    },
+    "invoice_period": {
+      "properties": {
+        "end_date": {
+          "type": "string"
+        },
+        "start_date": {
+          "type": "string"
+        }
+      },
+      "type": "object"
+    },
+    "invoice_verdict": {
+      "type": "string"
+    },
+    "prior_period_adv_shares": {
+      "type": "integer"
+    },
+    "recompute_tolerance_micros": {
+      "type": "integer"
+    },
+    "recomputed_invoice_micros": {
+      "type": "integer"
+    },
+    "rejected_inputs": {
+      "type": "array"
+    },
+    "scope_note": {
+      "type": "string"
+    },
+    "tiers": {
+      "items": {
+        "properties": {
+          "maker_rate_micros_per_share": {
+            "type": "integer"
+          },
+          "min_adv_shares": {
+            "type": "integer"
+          },
+          "taker_rate_micros_per_share": {
+            "type": "integer"
+          },
+          "tier_id": {
+            "type": "string"
+          }
+        },
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "volume_summary": {
+      "properties": {
+        "line_count": {
+          "type": "integer"
+        },
+        "maker_shares_total": {
+          "type": "integer"
+        },
+        "taker_shares_total": {
+          "type": "integer"
+        }
+      },
+      "type": "object"
+    }
+  },
+  "type": "object"
+}

AddedAug 7, 2026

TDQS

B3.4/5.0

Behavior4/5

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

Annotations already declare readOnly, idempotent, non-destructive, closed-world, so the safety profile is covered. The description adds real context beyond that: inputs are processed transiently and not stored or logged, gpu:true nodes always delegate to the browser, and an AP2 artifact with execution_hash is exported for provenance. These are useful behavioral facts the annotations do not convey.

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 definition opens with generic node boilerplate (compute binding, Cloudflare Workers, FV-status URL and hash) before reaching the actual purpose, so it is not front-loaded. The core summary and the output list are both truncated mid-word, and the URL/hash block consumes space without helping an agent decide or invoke.

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

Completeness3/5

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

There is no output schema, and the description partially compensates by enumerating output fields (active_tier, diff_micros, invoice_verdict, etc.), though the list is cut off. For a multi-stage financial computation whose nested policy_parameters are untyped, the description leaves the shape of the fee schedule and volume lines unexplained, which is a real gap for correct invocation.

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%, including the required-key list and the "unknown keys are refused" rule, so the schema largely does this job. The description adds some meaning by tying prior_period_adv_shares to tier resolution and fee_schedule to rebate/fee rates. However, the nested policy_parameters members (fee_schedule, invoice_period, prior_period_adv_shares, etc.) are untyped empty objects in the schema and the description does not describe their expected structure.

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

Purpose4/5

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

The summary names a specific verb and resource: recomputing a monthly exchange maker-taker invoice, resolving the active tier from declared prior-period ADV, applying maker rebate and taker fee rates, and diffing against the claimed invoice. That is far more specific than the title alone. It loses a point because the summary is truncated mid-sentence ("diffs th...") and never explicitly distinguishes this from adjacent fee-recompute siblings such as recompute_stock_loan_rebate_fee or compute_odnsf_fee_recompute.

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?

The description gives an input-handling rule ("Use synthetic or anonymised inputs only") and explains compute-mode selection, but it never states when to choose this tool over the many other fee/recompute siblings. Usage is implied by the scenario (reconciling a maker-taker invoice) rather than stated as a routing rule.

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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Exchange Access-Fee / Maker-Taker Tier Recompute

Input Schema

Schema Changelog

TDQS

Glama MCP Gateway

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