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compass-mcp

compass-mcp

by chrischall
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TypeScript
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Get Compass property photo gallery

compass_get_property_photos
Read-onlyIdempotent

The full photo gallery for a Compass listing — every image in listing.media[]. Each entry returns the original CDN URL plus a thumbnail URL and pixel dimensions.

Instructions

The full photo gallery for a Compass listing — every image in listing.media[]. Each entry returns the original CDN URL plus a thumbnail URL and pixel dimensions. Pass either url (the full Compass homedetails URL or path) or listing_id_sha alone — sha-only calls fetch /listing//view, which redirects to the homedetails page. By default only photos (category 0) are returned; set include_all_categories: true to also include floorplans and other media. Returns { listing_id_sha, count, photos }. Read-only; safe to call repeatedly.

Tool call template

This tool declares no required parameters. Add optional parameters from the input schema as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {},
    "name": "compass_get_property_photos"
  }
}

Input Schema

NameRequiredDescriptionDefault
urlNoCompass homedetails URL or path (preferred — no resolver round-trip needed).
listing_id_shaNoCompass listing identifier (the SHA inside `<sha>_lid`). Sufficient on its own — the tool fetches /listing/<sha>/view, which 302-redirects to the slugged homedetails page (no extra lookup).
include_all_categoriesNoInclude non-photo media (floorplans, etc.). Default false.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changedv1.1.10
    • changedInput schema / properties / listing_id_sha / description
      Previous value: -"Compass listing identifier. Sufficient on its own — the tool resolves the address slug internally via site search before fetching."New value: +"Compass listing identifier (the SHA inside `<sha>_lid`). Sufficient on its own — the tool fetches /listing/<sha>/view, which 302-redirects to the slugged homedetails page (no extra lookup)."
  2. Changed1 schema field changedv1.0.0
    • changedInput schema / $schema
      Previous value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"
  3. First observedv0.12.1

TDQS

A4.4/5.0
Behavior4/5

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

Annotations already declare readOnly/idempotent/openWorld, but the description adds real value beyond them: the return shape, per-entry CDN/thumbnail/dimension content, the category-0 default, and the redirect behavior. It slightly repeats the safety profile ('read-only; safe to call repeatedly'), which the annotations already carry.

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?

Purpose is front-loaded in the first clause, followed by return format, input routing, and category behavior. Dense but every sentence earns its place; it is slightly packed rather than wasteful.

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?

With no output schema, the description compensates by specifying the returned object `{ listing_id_sha, count, photos }` and what each photo entry contains. An agent has enough to call and interpret the result correctly.

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 100%, so the baseline is 3, but the description adds meaning beyond the schema by clarifying that url and listing_id_sha are alternatives and detailing what the sha-only path fetches. It also reinforces the default-off behavior of include_all_categories.

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?

States a specific verb and resource: the full photo gallery for a Compass listing, resolving to listing.media[]. It is clearly distinguishable from compass_get_property (general property data) and compass_get_price_history by naming the concrete artifact returned.

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?

Gives clear operational guidance: pass either `url` or `listing_id_sha` alone, and explains the sha-only redirect path. It covers when to use which input, but does not explicitly contrast the tool against siblings like compass_get_property for agents deciding which to call.

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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