Tanod Finance

utilpeek: US Treasury par yield curve (daily, 1 Mo to 30 Yr)

treasury_yield_curve

Read-onlyIdempotent

utilpeek: Get US Treasury yields: the daily par yield curve for a date. Returns the official US Treasury daily par yield curve for a date (default: the latest): yields in percent from 1 Mo to 30 Yr (null where none was published); a date without a curve returns the nearest earlier one (adjusted: true). Input: optional date. Informational only, not investment advice. Data: U.S. Treasury (public domain), cached up to 6 hours; no Treasury endorsement implied. A bad, pre-1990 or future date is a 422 (not charged); an upstream outage is a 503 (not charged). Typically under 0.1 s from cache; up to about 25 s when the Treasury feed is fetched (it is slow). Price: USD 0.002. Free: 10 utilpeek calls per IP per UTC day.

Input Schema

TableJSON Schema

Name	Required	Description	Default
`date`	No	Curve date YYYY-MM-DD (1990-01-02 to today). Default: the latest published curve. A date with no curve (weekend, holiday, not yet published) returns the nearest earlier one, with adjusted: true.

Output Schema

TableJSON Schema

Name	Required	Description
`date`	No
`note`	No
`unit`	No
`error`	No	Only on an error result: an object {code, message}, or the reason string of an x402 PaymentRequired object.
`stale`	No
`cached`	No
`source`	No
`adjusted`	No
`disclaimer`	No
`yields_pct`	No
`cache_seconds`	No
`requested_date`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedOct 8, 2026

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "properties": {
+    "adjusted": {
+      "type": [
+        "boolean",
+        "null"
+      ]
+    },
+    "cache_seconds": {
+      "type": [
+        "integer",
+        "null"
+      ]
+    },
+    "cached": {
+      "type": [
+        "boolean",
+        "null"
+      ]
+    },
+    "date": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "disclaimer": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "error": {
+      "description": "Only on an error result: an object {code, message}, or the reason string of an x402 PaymentRequired object."
+    },
+    "note": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "requested_date": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "source": {
+      "properties": {
+        "license": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "name": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "notice": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "terms": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "url": {
+          "type": [
+            "string",
+            "null"
+          ]
+        }
+      },
+      "type": [
+        "object",
+        "null"
+      ]
+    },
+    "stale": {
+      "type": [
+        "boolean",
+        "null"
+      ]
+    },
+    "unit": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "yields_pct": {
+      "properties": {
+        "1 Mo": {
+          "type": [
+            "number",
+            "null"
+          ]
+        },
+        "1 Yr": {
+          "type": [
+            "number",
+            "null"
+          ]
+        },
+        "1.5 Mo": {
+          "type": [
+            "number",
+            "null"
+          ]
+        },
+        "10 Yr": {
+          "type": [
+            "number",
+            "null"
+          ]
+        },
+        "2 Mo": {
+          "type": [
+            "number",
+            "null"
+          ]
+        },
+        "2 Yr": {
+          "type": [
+            "number",
+            "null"
+          ]
+        },
+        "20 Yr": {
+          "type": [
+            "number",
+            "null"
+          ]
+        },
+        "3 Mo": {
+          "type": [
+            "number",
+            "null"
+          ]
+        },
+        "3 Yr": {
+          "type": [
+            "number",
+            "null"
+          ]
+        },
+        "30 Yr": {
+          "type": [
+            "number",
+            "null"
+          ]
+        },
+        "4 Mo": {
+          "type": [
+            "number",
+            "null"
+          ]
+        },
+        "5 Yr": {
+          "type": [
+            "number",
+            "null"
+          ]
+        },
+        "6 Mo": {
+          "type": [
+            "number",
+            "null"
+          ]
+        },
+        "7 Yr": {
+          "type": [
+            "number",
+            "null"
+          ]
+        }
+      },
+      "type": [
+        "object",
+        "null"
+      ]
+    }
+  },
+  "type": "object"
+}

First observedOct 8, 2026

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