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ChainHelix for Machines

by io.chainhelix.mcp
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daily_digest

Read-only

One hash per day: the Merkle digest of every reveal, hire deliverable and verification record stored on BNB Greenfield that day, with its root sealed on opBNB. Optional date YYYY-MM-DD, default the latest

Input Schema

NameRequiredDescriptionDefault
dateNoUTC day, YYYY-MM-DD; absent = the newest day on record. Example: 2026-10-24

Output Schema

NameRequiredDescriptionDefault
dateNo
daysNo
rootNo
foundYes
leavesNo
sealedNo
verifyNo
digestUrlNo
digestBytesNo
digestSha256No

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changed
    • addedInput schema / properties / date / description
      Added value: +"UTC day, YYYY-MM-DD; absent = the newest day on record. Example: 2026-10-24"
  2. Changed1 schema field changed
    • changedInput schema / x-lexicon / bundleSha256
      Previous value: -"670f7504e3de5031beccee25a2d24e4515f68b893295f6d5b0d3a0665498b2c9"New value: +"25cc80db6d8e9eac73d47a50f7ad6333a21f1972d008a8fed0159de8bfb4b519"
  3. Changed2 schema fields changed
    • changedInput schema / x-lexicon / bundleSha256
      Previous value: -"e5b4290024a229f2bdf97f8fc6a0079c3fe13b77267f41fdcffeb8b26aa1c41e"New value: +"670f7504e3de5031beccee25a2d24e4515f68b893295f6d5b0d3a0665498b2c9"
    • changedInput schema / x-lexicon / version
      Previous value: -"0.1.0"New value: +"0.2.0"
  4. Changed1 schema field changed
    • addedInput schema / additionalProperties
      Added value: +false
  5. Changed1 schema field changed
    • changedInput schema / x-lexicon / bundleSha256
      Previous value: -"a1c2e10fd3177d6b4d59ca78693e8fb36880165cf0f735f680dd86a510411178"New value: +"e5b4290024a229f2bdf97f8fc6a0079c3fe13b77267f41fdcffeb8b26aa1c41e"
  6. Changed1 schema field changed
    • changedInput schema / x-lexicon / bundleSha256
      Previous value: -"1eeb782ee15fe69fc80776948e0556fa6b795e210e6305935b2c97b73d955cda"New value: +"a1c2e10fd3177d6b4d59ca78693e8fb36880165cf0f735f680dd86a510411178"
  7. Changed1 schema field changed
    • changedInput schema / x-lexicon / bundleSha256
      Previous value: -"c014292cad7497ce9fd68c33345ac32cb42b672c8e77d6c749c26e162cc207e4"New value: +"1eeb782ee15fe69fc80776948e0556fa6b795e210e6305935b2c97b73d955cda"
  8. Changed3 schema fields changed
    • addedInput schema / x-aliases
      Added value: +{
+  "date": [
+    "Date"
+  ]
+}
    • addedInput schema / x-lexicon
      Added value: +{
+  "bundleSha256": "c014292cad7497ce9fd68c33345ac32cb42b672c8e77d6c749c26e162cc207e4",
+  "name": "ChainHelix Agentic Lexicon",
+  "resolve": "lexicon_resolve",
+  "spec": "lexicon_spec",
+  "version": "0.1.0"
+}
    • addedInput schema / x-vocab
      Added value: +{
+  "date": "data.date"
+}
  9. Changed1 schema field changed
    • changedOutput schema / (root)
      Previous value: -nullNew value: +{
+  "additionalProperties": true,
+  "properties": {
+    "date": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "days": {
+      "items": {
+        "type": "string"
+      },
+      "type": "array"
+    },
+    "digestBytes": {
+      "type": [
+        "number",
+        "null"
+      ]
+    },
+    "digestSha256": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "digestUrl": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "found": {
+      "type": "boolean"
+    },
+    "leaves": {
+      "type": [
+        "number",
+        "null"
+      ]
+    },
+    "root": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "sealed": {
+      "additionalProperties": true,
+      "type": [
+        "object",
+        "null"
+      ]
+    },
+    "verify": {
+      "type": [
+        "string",
+        "null"
+      ]
+    }
+  },
+  "required": [
+    "found"
+  ],
+  "type": "object"
+}
  10. Added

TDQS

A3.6/5.0
Behavior4/5

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

With readOnlyHint=true already indicating a safe read operation, the description adds useful behavioral context: the result is one daily hash, it covers specific record classes, and it is tied to storage on BNB Greenfield with a root sealed on opBNB. It does not cover auth, rate limits, or behavior when a date has no digest.

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?

The description is two front-loaded sentences with no filler. The core artifact and date behavior are both stated efficiently.

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?

An output schema exists and annotations already establish read-only behavior, so the description need not explain return structure. It provides the key content and provenance context, though it leaves edge cases such as missing days or inaccessible records unstated.

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%, and the schema already documents the date format, default behavior, and an example. The description repeats the optional YYYY-MM-DD date and latest-day default without adding materially new parameter semantics.

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 description identifies a specific artifact: a daily Merkle digest covering reveals, hire deliverables, and verification records stored on BNB Greenfield, with its root sealed on opBNB. That makes the resource clear, but it does not explicitly distinguish this tool from siblings such as list_reveals, verified_delivery, data_changelog, or freshness.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The only usage cue is that the date parameter defaults to the latest day. The description does not say when to choose daily_digest over alternative tools, nor when not to use it.

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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