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chrischall

compass-mcp

by chrischall

Bulk-fetch Compass listings by url or listing_id_sha

compass_bulk_get
Read-onlyIdempotent

Fetch up to 200 Compass listings in a single call. Returns structured data per target with error handling and retry logic for timeouts.

Instructions

Fetch up to 200 Compass listings in a single call. Returns one structured row per input target (no side-by-side summary table — use compass_compare_properties for that). Each row is either { listing_id_sha, url, property } on success or { listing_id_sha, url, error } on failure — one bad target never fails the whole call. When the failure was a bridge timeout (after one retry) or an unreachable bridge (issue #73), the row also carries { status: "timeout" | "bridge_down", retryable: true } — that is NOT a missing listing, so retry it (a cold bridge usually succeeds on the second call) rather than concluding Compass has no record. Targets accept the same url / listing_id_sha shape as compass_get_property. Calls fan out concurrently. extracted_features is populated per row. The raw description is omitted by default — pass include_description: true to keep it.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
targetsYesUp to 200 targets to fetch. For higher counts, batch into multiple calls.
include_descriptionNoInclude the raw `description` on each row. Defaults to `false` — `extracted_features` is always populated.
Behavior5/5

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

Discloses batch size limit (200), concurrency, error handling (one bad target doesn't fail whole call), retryable flag, default omission of description, and always-included extracted_features. Adds significant context beyond annotations, no contradictions.

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?

Front-loaded with main purpose; each sentence adds distinct value (error handling, retry, concurrency, alternative tool). No fluff, efficient paragraph despite covering many aspects.

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?

Covers all necessary aspects: purpose, input, output format, error handling, retry logic, default behavior, parallelism, and relation to siblings. Complete for complex bulk fetch tool without output schema.

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

Parameters5/5

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

Schema coverage is 100% but description adds meaning: explains output format per target, retryable conditions, default value of include_description, and references compass_get_property for target shape. Adds behavioral details not in 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?

Clearly states 'Fetch up to 200 Compass listings in a single call' with specific verb and resource. Distinguishes from sibling tools by referencing compass_compare_properties and compass_get_property for shape. No ambiguity.

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

Usage Guidelines5/5

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

Explicitly explains when to use (for bulk fetch) and when not (for summary table, use compass_compare_properties). Provides retry guidance for timeout/bridge_down errors, and notes targets have same shape as compass_get_property. Clear context for selection.

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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