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ms-methos

jsonfabrica-mcp-server

List JsonFabrica sequences

jsonfabrica_list_sequences

Fetches a page of reusable synthetic JSON test-data sequences, returning items and a cursor to continue browsing templates for data generation.

Instructions

Calls GET /v1/sequences. Returns a page of sequences ({ items, nextCursor }).

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
limitNo
cursorNo

Schema Changelog

Changes observed during successful MCP inspections. Dates show when Glama detected each change.

  1. First observedv0.1.4

TDQS

A3.8/5.0
Behavior3/5

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

No annotations are provided, so the description carries the full burden. It discloses that the operation is a GET (read-only) and that it returns a page with a nextCursor, which is important pagination behavior. However, it does not mention authentication requirements, default limit, ordering, or what happens when there are no sequences, which would provide fuller transparency.

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?

Two sentences, no wasted words. The endpoint is front-loaded, and the response shape is given compactly. Every sentence provides necessary information.

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 list endpoint with no output schema, the description is nearly sufficient: it gives the HTTP method, endpoint, and response pagination shape. It does not elaborate on parameter details or additional list behavior, but the core information an agent needs to call and interpret the response is present.

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 0%, so the description must compensate for the undocumented `limit` and `cursor` parameters. The mention of `nextCursor` strongly implies that `cursor` is a pagination token, and `page` implies `limit` controls page size. Yet the description does not explicitly define either parameter, leaving some inference required.

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 names the exact endpoint (GET /v1/sequences) and explicitly states the return value: a page of sequences with `{ items, nextCursor }`. This is a specific verb+resource that clearly differentiates it from sibling tools like jsonfabrica_get_sequence (single sequence) or jsonfabrica_list_templates (different resource).

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 description implies usage: it lists sequences via the named endpoint. However, it does not explicitly state when to prefer this over alternatives, such as using get_sequence for a specific sequence or list_templates for templates. The guidance is present only by implication from the endpoint and resource.

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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