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orancummins

Open Finance US MCP

by orancummins

generate_lite_connect_url

Generate a data connect URL for a single institution, allowing access to financial data for a specific customer.

Instructions

Generate a Lite Data Connect URL scoped to one institution.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
customer_idYes
institution_idYes

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
okYesTrue when the upstream HTTP status was < 400.
dataNoFinicity's native response body.
errorNoError summary when ok is False.
status_codeYesUpstream Finicity HTTP status code.
Behavior2/5

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

No annotations exist, and the description does not disclose any behavioral traits (e.g., side effects, authentication requirements, rate limits). It only states the basic function without additional context.

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 description is a single concise sentence with no redundant information. However, it may be too terse for a tool with two parameters and an output schema.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the complexity of the sibling tools (e.g., generate_connect_url) and 0% parameter documentation, the description is incomplete. It does not clarify the distinction between 'Lite' and regular connect URLs or provide enough context for proper agent selection.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters1/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0%, and the description does not explain the parameters (customer_id, institution_id). It adds no meaning beyond the schema, which is especially problematic given the low coverage.

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 clearly states the action ('Generate a Lite Data Connect URL') and scope ('scoped to one institution'), providing a specific verb and resource. However, it does not differentiate from siblings like 'generate_connect_url' or 'generate_fix_connect_url'.

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?

No guidance is provided on when to use this tool versus alternatives. The description lacks information about prerequisites, context, or exclusions.

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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