intel

standing_watch

The standing of one ERC-8004 agent on BNB Smart Chain WATCHED for you: 4 dollars buys 7 days of standing_change messages for one agent id PUSHED to your https url, signed. The baseline standing arrives within five minutes, then one message each time the agent's evidence tier, its reachability (hireable, alive, gated, offline) or its registry feedback grade changes, each carrying the full unsigned standing (the same fields as agent_standing). For the buyer with money in escrow with an agent or an agent listed under its name. Call once per agent id; call again to renew or to watch another; manage with webhook_status and webhook_unregister. Method: standing_spec. Price: 4 dollars per call. A ChainHelix API key does not cover this tool.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "url": "<url>",
      "id": "<id>"
    },
    "name": "standing_watch"
  }
}

Input Schema

Name	Required	Description	Default
`id`	Yes	the ERC-8004 token id on BNB Smart Chain
`url`	Yes	https URL on a public host name, up to 500 characters; localhost, .local, .internal and .lan names, private IPv4 addresses and IPv6 literals are refused. Example: https://example.com/hooks/chainhelix

Output Schema

Name	Required	Description	Default
`id`	No
`url`	No
`note`	No
`agent`	No
`error`	No
`events`	No
`secret`	No
`watches`	No
`daysAdded`	No
`expiresAt`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedOct 25, 2026

addedInput schema / properties / url / description

Added value: +"https URL on a public host name, up to 500 characters; localhost, .local, .internal and .lan names, private IPv4 addresses and IPv6 literals are refused. Example: https://example.com/hooks/chainhelix"

Changed1 schema field changedOct 16, 2026

changedInput schema / x-lexicon / bundleSha256

Previous value: -"670f7504e3de5031beccee25a2d24e4515f68b893295f6d5b0d3a0665498b2c9"New value: +"25cc80db6d8e9eac73d47a50f7ad6333a21f1972d008a8fed0159de8bfb4b519"

Changed2 schema fields changedOct 16, 2026

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"

Changed2 schema fields changedOct 15, 2026

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

removedOutput schema / properties / receipt

Removed value: -{
-  "additionalProperties": false,
-  "properties": {
-    "bytes": {
-      "type": "number"
-    },
-    "covers": {
-      "type": "string"
-    },
-    "issuedAt": {
-      "type": "number"
-    },
-    "lookup": {
-      "type": "string"
-    },
-    "network": {
-      "type": [
-        "string",
-        "null"
-      ]
-    },
-    "nonce": {
-      "type": "string"
-    },
-    "seq": {
-      "type": "number"
-    },
-    "settleTx": {
-      "type": [
-        "string",
-        "null"
-      ]
-    },
-    "sha256": {
-      "type": "string"
-    },
-    "tool": {
-      "type": [
-        "string",
-        "null"
-      ]
-    }
-  },
-  "type": "object"
-}

Changed1 schema field changedSep 21, 2026

changedInput schema / x-lexicon / bundleSha256

Previous value: -"a1c2e10fd3177d6b4d59ca78693e8fb36880165cf0f735f680dd86a510411178"New value: +"e5b4290024a229f2bdf97f8fc6a0079c3fe13b77267f41fdcffeb8b26aa1c41e"

Changed1 schema field changedSep 19, 2026

changedInput schema / x-lexicon / bundleSha256

Previous value: -"1eeb782ee15fe69fc80776948e0556fa6b795e210e6305935b2c97b73d955cda"New value: +"a1c2e10fd3177d6b4d59ca78693e8fb36880165cf0f735f680dd86a510411178"

Changed1 schema field changedSep 19, 2026

changedInput schema / x-lexicon / bundleSha256

Previous value: -"c014292cad7497ce9fd68c33345ac32cb42b672c8e77d6c749c26e162cc207e4"New value: +"1eeb782ee15fe69fc80776948e0556fa6b795e210e6305935b2c97b73d955cda"

Changed3 schema fields changedSep 19, 2026

addedInput schema / x-aliases

Added value: +{
+  "id": [
+    "Id",
+    "ID",
+    "@id"
+  ],
+  "url": [
+    "Url",
+    "URL"
+  ]
+}

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: +{
+  "id": "data.id",
+  "url": "data.url"
+}

AddedSep 18, 2026

TDQS

A4.6/5.0

Behavior5/5

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

With annotations only telling us it is a non-idempotent, non-destructive write, the description supplies everything that actually matters: price (4 dollars per call), subscription duration (7 days), that the ChainHelix API key does not cover it, latency of the baseline (within five minutes), the exact change triggers, and that messages are signed but carry unsigned standing. This is unusually rich disclosure for a paid, stateful tool.

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

Conciseness4/5

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

The core offer and price are front-loaded and nearly every sentence carries a distinct fact (duration, cadence, payload, lifecycle, payment caveat). Minor redundancy: the price is stated twice, once in the opening sentence and again as 'Price: 4 dollars per call'.

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?

For a paid, non-idempotent, stateful subscription with an output schema present, the description covers cost, duration, timing, payload shape, renewal and teardown. An agent has everything needed to decide and invoke correctly without further exploration.

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?

Schema coverage is 100%, so the baseline is 3, but the description adds real semantics: 'id' is scoped to a single ERC-8004 token id on BNB Smart Chain and 'url' is the push destination. It clarifies the cardinality constraint ('one agent id' per call) that the bare schema does not enforce or explain.

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?

States a specific verb and resource: it creates a paid 7-day webhook subscription that pushes signed standing_change messages for one ERC-8004 agent id. It distinguishes itself from the snapshot sibling by noting each push carries 'the same fields as agent_standing', making clear this is the streaming counterpart rather than the one-shot read.

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?

Gives an explicit audience and trigger ('For the buyer with money in escrow with an agent or an agent listed under its name') plus lifecycle guidance: call once per agent id, call again to renew or add another, manage with webhook_status and webhook_unregister. It does not explicitly say when to prefer agent_standing over this, so the exclusion side is implied rather than stated.

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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