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mcp-retrieval

by Role1776
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Hybrid

Web image search

web_search_images
Read-onlyIdempotent

Find images by running up to 10 parallel English queries with optional freshness filters when you need pictures instead of text answers or links.

Instructions

Searches for images by one or more queries, executed in parallel. IMPORTANT: Queries must be in English ONLY. Use this only when you need pictures; use 'web_search' for text answers and links, and 'web_scrape' to read a page.

Freshness: set the 'date' field to restrict results by recency - 'd' (past day), 'w' (past week), 'm' (past month), 'y' (past year); leave it empty for all time.

Query operators can be embedded in the query string: 'site:example.com term' limits to one site, double quotes "exact phrase" force an exact match, and a leading '-' excludes a word.

Results are reported per query with a 'status' field (success, no relevant, failed or timeout). A failed query does not fail the others; the call errors only if every query fails. The upstream image search may rate-limit or block requests, which shows up as a failed or timed-out query.

Input Schema

NameRequiredDescriptionDefault
dateNofreshness filter: 'd' past day, 'w' past week, 'm' past month, 'y' past year; empty means all time; other values are ignored
queriesYes1-10 image search queries in English, run in parallel; each must be non-empty and at most 512 characters, otherwise the whole call is rejected
max_imagesNomaximum images per query, not in total; default 5, values above 10 are clamped to 10
timeout_msNotimeout for the whole call in milliseconds, shared by all queries; default 5000, clamped to 1000-10000; unfinished queries get status 'timeout'

Output Schema

NameRequiredDescriptionDefault
resultsYes
metadataYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed5 schema fields changedv0.1.10
    • changedInput schema / properties / date / description
      Previous value: -"filter results by freshness: 'd' past day, 'w' past week, 'm' past month, 'y' past year; empty means all time"New value: +"freshness filter: 'd' past day, 'w' past week, 'm' past month, 'y' past year; empty means all time; other values are ignored"
    • changedInput schema / properties / max_images / description
      Previous value: -"maximum number of images per query"New value: +"maximum images per query, not in total; default 5, values above 10 are clamped to 10"
    • changedInput schema / properties / queries / description
      Previous value: -"queries in English for image search"New value: +"1-10 image search queries in English, run in parallel; each must be non-empty and at most 512 characters, otherwise the whole call is rejected"
    • addedInput schema / properties / queries / maxItems
      Added value: +10
    • changedInput schema / properties / timeout_ms / description
      Previous value: -"timeout for the whole call in milliseconds"New value: +"timeout for the whole call in milliseconds, shared by all queries; default 5000, clamped to 1000-10000; unfinished queries get status 'timeout'"
  2. First observedv1.0.0

TDQS

A4.6/5.0
Behavior4/5

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

Annotations already declare readOnly/openWorld/idempotent/non-destructive, yet the description still adds real value: per-query status semantics, partial-failure behavior ("a failed query does not fail the others"), and the upstream rate-limit/block risk. It does not explain result ordering or what fields come back, but the output schema covers that.

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?

Front-loaded with the core behavior and routing decision, then broken into scannable paragraphs for freshness, operators, and failure semantics. Slightly dense, but no sentence is filler.

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?

For a 4-param parallel search tool with annotations and an output schema, this covers everything an agent needs: language constraint, batching, freshness, operator syntax, and failure modes. Nothing material is missing.

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 baseline is 3, and the description goes beyond it by documenting query operators (site:, "exact phrase", leading '-') that are absent from the schema entirely. The freshness codes and clamping are repeated from the schema rather than adding to it.

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 ("Searches for images by one or more queries") plus the parallel-execution trait. It explicitly names both siblings and what each is for, so an agent can pick the right tool without opening a schema.

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?

Gives an explicit use condition ("use this only when you need pictures") and names the two alternatives with their respective purposes. The English-only constraint is flagged as IMPORTANT and front-loaded.

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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