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Marks & Signatures

Find a maker

find_makers
Read-onlyIdempotent

Searches makers and their aliases by name across pottery, silver, jewelry, glass and other maker marks, optionally within one category or country. Returns pages of makers with place, active years, number of marks and an example mark image.

Input Schema

NameRequiredDescriptionDefault
queryNoMaker name or alias. Empty browses the most searched makers.
cursorNoOpaque nextCursor from a previous page with identical arguments and pageSize; absent on the first page.
countryNoCountry name as shown in the catalogue, such as Germany, United Kingdom or United States.
categoryNoCatalogue category: pottery (pottery and porcelain), silver (silver hallmarks), jewelry (jewelry and gold stamps), glass, or other (other maker marks such as cast iron and tools).
pageSizeNoResults per page; default 8.

Output Schema

NameRequiredDescriptionDefault
viewYes
itemsYes
totalYes
requestYes
pageSizeYes
nextCursorYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observed

TDQS

A3.8/5.0
Behavior4/5

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

The annotations already establish read-only, idempotent, closed-world, and non-destructive behavior. The description adds useful behavioral context beyond that by noting that results are paged and that each maker includes place, active years, mark count, and an example mark image.

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 front-load the search purpose and follow with the return format. Every sentence earns its place, with no redundant or vague wording.

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?

The tool has a rich schema, full annotation coverage, and an output schema, and the description adequately covers purpose and result shape. It could be slightly more complete by clarifying how this discovery tool relates to the sibling detail and mark tools, but nothing essential for calling it correctly is missing.

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%, so all five parameters are already documented in detail, including the empty-query browse behavior and pagination semantics. The description only restates that category and country are optional filters, adding no extra syntax or meaning beyond the schema.

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 states a specific verb ("Searches") and resource ("makers and their aliases") and scopes it across named categories. It does not explicitly distinguish this discovery tool from siblings like get_details or get_maker_marks, so it stops short of a 5.

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 when searching for a maker by name and notes optional category or country filtering, but it gives no explicit when-to-use or when-not guidance relative to get_details, get_maker_marks, or identify_mark.

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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