gisgp

dissolve_geojson

Merge overlapping/adjacent geometries into one (optionally grouped by a property field by → one dissolved feature per distinct value).

Returns JSON {ok, by, group_count, geojson}.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "geojson": "<geojson>"
    },
    "name": "dissolve_geojson"
  }
}

Input Schema

Name	Required	Description	Default
`by`	No
`geojson`	Yes

Output Schema

Name	Required	Description	Default
`result`	Yes

Schema Changelog

Changes observed during successful MCP inspections.

AddedJul 25, 2026

TDQS

A4.2/5.0

Behavior3/5

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

No annotations are provided, so the description must convey behavioral traits. It states the merge operation and the return format, but does not disclose whether geometries are modified, authentication requirements, or behavior for non-overlapping geometries.

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 efficiently cover purpose, optional grouping, and return value. No redundant information, and key details are front-loaded.

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 description covers purpose, parameter usage, and output format. With two parameters and an explicit return structure, it is largely complete. However, it lacks error handling details or input validation notes, which would enhance completeness for a geospatial tool.

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?

Schema coverage is 0%, so the description must add meaning. It explains that the 'by' parameter groups features and that each distinct value yields one dissolved feature. 'geojson' is not elaborated but is expected as a GeoJSON string. The description adds value beyond the bare 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 merges overlapping or adjacent geometries into one, with optional grouping by a property field. This distinguishes it from sibling tools like buffer_geojson or overlay_geojson, which perform different geometric operations.

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

Usage Guidelines4/5

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

The description indicates when to use the tool (to merge overlapping/adjacent geometries) and mentions the optional grouping parameter. However, it does not explicitly exclude cases or compare with alternatives like overlay_geojson for union operations, leaving some ambiguity.

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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