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pedronahum

JACTUS MCP Server

by pedronahum

jactus_list_risk_factor_observers

Lists available risk factor observer types for ACTUS contract simulation, from simple constants to advanced time-series, with guidance on usage via MCP or Python API.

Instructions

List all available risk factor observer types with usage guidance.

Returns observer types organized by complexity, from simple constant values to advanced time-series and curve observers. Each entry includes a description, typical use case, and whether it's available via MCP or requires the Python API.

Use this to determine which risk factor approach to use with jactus_simulate_contract. For MCP simulation, you can use: constant_value (default), risk_factors (dict), or time_series (time-varying). For advanced observers (curves, composites, callbacks, JAX), use the Python API directly.

Also includes behavioral observers (PrepaymentSurfaceObserver, DepositTransactionObserver) that inject callout events into the simulation timeline. These require the Python API.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Behavior4/5

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

No annotations provided, so description carries full burden. It describes the output structure (entries with description, use case, availability) and mentions behavioral observers. Lacks details on whether the tool has side effects, but it's a listing tool so read-only is implied.

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?

Description is concise, well-structured, and front-loaded with the main purpose. Every sentence adds value without redundancy.

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 parameterless list tool with an output schema, the description provides complete context: what it does, how to use it, and what the output contains. It leaves no major gaps.

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?

No parameters exist, so baseline is 4. The description adds value by explaining what the output contains, which is beyond the empty 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?

The description clearly states the tool lists risk factor observer types with usage guidance. It specifies the output is organized by complexity, which distinguishes it from other listing tools like jactus_list_contracts.

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

Usage Guidelines5/5

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

Explicitly says to use this tool to determine which risk factor approach to use with jactus_simulate_contract. It also details which observers are available via MCP vs Python API, providing clear when-to-use 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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