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CoinRithm/coinrithm-agent-trading

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by CoinRithm
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TypeScript
Hybrid

Get latest prediction-market whale trades

pm_data_whales
Read-only

Monitor large prediction-market trades across venues, showing side, outcome, USD value, price, market question, and event, newest first; no API key required.

Instructions

Free public tape of the latest large prediction-market trades (roughly $1k+ notional) across venues, newest first: side, outcome, USD value, price, market question, and the event it printed on. Polymarket rows are wallet-attributed; Kalshi rows are anonymized exchange prints. A large print is information, not a recommendation. No API key required.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
limitNoMax rows (1-50, default 10).

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
okYes
bodyNo
httpStatusYes
ledgerStatusNo
ledgerEventIdNo

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed5 schema fields changedv0.1.23
    • removedOutput schema / properties / body / description
      Removed value: -"Parsed CoinRithm response body, or raw text when the response is not JSON."
    • removedOutput schema / properties / httpStatus / description
      Removed value: -"HTTP status returned by CoinRithm, or 0 for network errors."
    • removedOutput schema / properties / ledgerEventId / description
      Removed value: -"Private AgentActionEvent id returned by /api/agent/*, when present."
    • removedOutput schema / properties / ledgerStatus / description
      Removed value: -"Ledger write status header returned by CoinRithm, when present."
    • removedOutput schema / properties / ok / description
      Removed value: -"True when CoinRithm returned a successful 2xx response."
  2. Changed2 schema fields changedv0.1.14
    • addedInput schema / additionalProperties
      Added value: +false
    • addedInput schema / properties / limit
      Added value: +{
+  "description": "Max rows (1-50, default 10).",
+  "maximum": 50,
+  "minimum": 1,
+  "type": "integer"
+}
  3. Addedv0.1.12

TDQS

A3.8/5.0
Behavior4/5

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

Annotations already declare readOnlyHint, openWorldHint, and destructiveHint, so safety is covered. The description adds real behavioral context beyond that: it is free/public, needs no API key, uses a ~$1k+ notional cutoff, distinguishes wallet-attributed Polymarket rows from anonymized Kalshi prints, and cautions that a large print is information, not a recommendation.

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, front-loaded with the resource and scope, each carrying distinct value (what it is, source caveats, disclaimers). No filler or repetition.

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?

For a simple read-only tape tool with an output schema and full annotation coverage, the description is nearly complete. The field list slightly duplicates the output schema, but the venue/attribution caveats and threshold make it sufficiently informative 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 coverage is 100% with a single, fully documented 'limit' parameter (1-50, default 10), so the schema does the heavy lifting. The description adds no additional parameter meaning, making the baseline 3 correct.

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?

States a specific verb and resource clearly: a tape of the latest large prediction-market trades across venues, with an explicit $1k+ notional threshold and 'newest first'. It is distinct from siblings like pm_data_overview or pm_data_events, though it never names the closest alternatives (pm_data_whale_wallet/wallets) to explicitly distinguish scope.

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?

Usage is implied by the 'latest large trades, newest first' framing and the notional threshold, but there is no explicit when-to-use, no when-not-to-use, and no routing to the sibling whale-wallet tools for per-wallet views. The agent must infer the niche from context.

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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