AGORA Omega

agora_stablecoin_depeg

AGORA Sentinel: stablecoin depeg risk indicator. Reads the Chainlink price feed on-chain and returns the deviation from 1 USD in basis points, a 0-100 score, a level (calme / tendu / alerte), data age and staleness. A risk indicator, not investment advice and not a forecast. Price: $0.01 USDC per call, paid with x402.

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": {
      "network": "<network>",
      "symbol": "<symbol>"
    },
    "name": "agora_stablecoin_depeg"
  }
}

Input Schema

Name	Required	Description	Default
`symbol`	Yes	Stablecoin symbol, e.g. USDC
`network`	Yes	EVM network, e.g. base, ethereum, polygon, arbitrum

Schema Changelog

Changes observed during successful MCP inspections.

AddedOct 7, 2026

TDQS

A4/5.0

Behavior4/5

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

With no annotations, the description carries the full behavioral burden and does well: it discloses the data source (on-chain Chainlink feed), the return payload (deviation in bps, 0-100 score, level, data age and staleness), and a monetization trait no schema captures — $0.01 USDC per call paid via x402. It stops short of stating whether the call is read-only in failure/error cases or what happens when the feed is stale.

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?

Three tight sentences, zero waste, front-loaded with identity then payload then cost/disclaimer. Every clause carries distinct information (source, output fields, price mechanism, scope limits).

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?

No output schema and no annotations, so the description must cover returns and cost — and it does, listing the five returned values and the x402 payment requirement. It is nearly complete for a two-param read tool; minor gaps remain around error/staleness handling and the supported network list.

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% with two clearly documented parameters (symbol, network), so the baseline is 3. The description adds no syntax, format, or enumeration detail beyond the schema — it never mentions which networks or symbols are actually supported, even though 'base, ethereum, polygon, arbitrum' is only an example in the schema.

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 ('Reads the Chainlink price feed on-chain and returns the deviation from 1 USD in basis points, a 0-100 score, a level'), naming the exact artifact produced. The sibling tools cover entirely unrelated domains (AI act, catalog, supplier audit), so no overlap needs disambiguation and the name plus description make its niche obvious.

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 purpose implies the use case (checking stablecoin depeg risk) but the description never says when to reach for this tool versus another, nor any prerequisite conditions such as supported networks or feed availability. The 'not investment advice, not a forecast' line sets a boundary on interpretation but is a disclaimer, not usage guidance.

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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