SearchCAIE MCP Server
Server Quality Checklist
Latest release: v0.1.0
- Disambiguation4/5
Tools have distinct purposes overall, but search_questions and search_multi overlap in searching questions; descriptions differentiate them (single vs multiple topics, deduplication). Minor confusion possible.
Naming Consistency5/5All tools use a consistent verb_noun snake_case pattern. 'get_' for retrieval and 'search_' for searching, with clear, predictable names.
Tool Count5/5Seven tools is well-scoped for a CAIE exam search server. Each tool addresses a specific need: searching, fetching details, examiner reports, statistics, supplementary content.
Completeness4/5Core workflows are covered: search questions, get details, examiner reports, supplementary resources. Minor gaps like listing available subjects or papers are missing but not critical for the primary use case.
Average 3.9/5 across 7 of 7 tools scored. Lowest: 3.3/5.
See the Tool Scores section below for per-tool breakdowns.
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How is the quality score calculated?
The overall quality score combines two components: Tool Definition Quality (70%) and Server Coherence (30%).
Tool Definition Quality measures how well each tool describes itself to AI agents. Every tool is scored 1–5 across six dimensions: Purpose Clarity (25%), Usage Guidelines (20%), Behavioral Transparency (20%), Parameter Semantics (15%), Conciseness & Structure (10%), and Contextual Completeness (10%). The server-level definition quality score is calculated as 60% mean TDQS + 40% minimum TDQS, so a single poorly described tool pulls the score down.
Server Coherence evaluates how well the tools work together as a set, scoring four dimensions equally: Disambiguation (can agents tell tools apart?), Naming Consistency, Tool Count Appropriateness, and Completeness (are there gaps in the tool surface?).
Tiers are derived from the overall score: A (≥3.5), B (≥3.0), C (≥2.0), D (≥1.0), F (<1.0). B and above is considered passing.
Tool Scores
- Behavior4/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already indicate readOnly and idempotent. Description adds value by detailing output structure (ranked results, compact metadata, image URLs, topic_signal).
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness5/5Is the description appropriately sized, front-loaded, and free of redundancy?
Very concise; front-loads purpose, uses bullet points for output details, and callout for next step. Every sentence adds value.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness3/5Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Output is well described, but input parameters are nearly undocumented. Given 10 params with 0% schema coverage, the description is incomplete for correct invocation.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters2/5Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 0%, but description only mentions 'optional filters' without explaining any of the 10 parameters (query, subject, paper, etc.). Leaves agent guessing.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose4/5Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states it searches past-paper questions with filters, but does not explicitly differentiate from siblings like search_multi or search_examiner_reports.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines2/5Does the description explain when to use this tool, when not to, or what alternatives exist?
No guidance on when to use this tool versus alternatives; no context on prerequisites or exclusions. Only a next-step suggestion to call get_questions.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
- Behavior2/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description must fully convey behavioral traits. It only states the purpose without disclosing safety, idempotency, or side effects, which is insufficient for a tool with no annotation support.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness5/5Is the description appropriately sized, front-loaded, and free of redundancy?
Single sentence, no redundancy, perfectly concise for a simple tool.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness4/5Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given no parameters and presence of an output schema, the description is mostly complete for a basic stats/health endpoint. However, it could elaborate on what 'API statistics' entails to improve agent understanding.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters4/5Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The input schema has zero parameters with 100% coverage, so the baseline is 4. The description does not add parameter info since none exist, but it also does not detract.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the action ('Get') and the resource ('overall API statistics and service health'), distinguishing it from sibling tools which focus on questions, reports, and searches.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines2/5Does the description explain when to use this tool, when not to, or what alternatives exist?
No guidance on when to use this tool versus alternatives. The description is minimal with no explicit context or exclusion criteria, leaving the agent to infer usage solely from the tool name and sibling names.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
- Behavior4/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already confirm read-only and idempotent behavior. The description adds value by noting deduplication by question ID and the flexibility of accepting either 'topics' string or 'topics_list' array.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness5/5Is the description appropriately sized, front-loaded, and free of redundancy?
Two short sentences: the first states purpose and key behavior, the second explains the alternative parameter formats. Front-loaded and efficient.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness2/5Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
With 11 parameters and no output schema, the description omits critical details about filtering parameters (subject, year, etc.) and the structure of the response, making it insufficient for a tool of this complexity.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters2/5Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0%, and the description only explains 'topics' and 'topics_list', leaving 9 out of 11 parameters (e.g., subject, paper, year, mode) completely undocumented, failing to compensate for the schema gap.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states that the tool searches multiple topics and deduplicates by question ID, distinguishing it from sibling tools like search_questions which likely handle single topics.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines3/5Does the description explain when to use this tool, when not to, or what alternatives exist?
The description does not provide explicit guidance on when to use this tool versus alternatives like search_questions or search_web_context, leaving the agent to infer based on the name.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
- Behavior3/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint and idempotentHint. Description adds behavioral context about the type of insights returned (examiner observations, common mistakes, tips). No contradiction with annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness5/5Is the description appropriately sized, front-loaded, and free of redundancy?
Description is concise, front-loaded with purpose, uses a bullet list for return types, and fits in a few sentences without unnecessary words.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness4/5Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Covers the purpose, return type, and usage guidance effectively. Does not explain pagination or exact output format, but for a search tool with no output schema, it is adequate.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters2/5Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0%, and the description does not explain the individual parameters (subject, paper, year, limit) beyond their names. The general purpose of the query is clear, but filter parameters lack explanation.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5Does the description clearly state what the tool does and how it differs from similar tools?
Clearly states it searches Cambridge examiner reports for insights on how a topic is examined. Lists specific return types (examiner expectations, common mistakes, tips). Differentiates from siblings by specifying it is about HOW to answer, not WHAT, and advises use after searching questions.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines4/5Does the description explain when to use this tool, when not to, or what alternatives exist?
Explicitly says 'Use AFTER searching questions to understand examiner expectations on the same topic.' Provides clear context for when to use, but does not give explicit alternatives for when not to use it.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
- Behavior4/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already indicate readOnlyHint and idempotentHint, so the tool is safe and idempotent. The description adds behavioral details such as returning summarized content from trusted CS education sites, with a max of 800 characters per source, and listing return fields (source title, URL, domain, key educational content). 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.
Conciseness5/5Is the description appropriately sized, front-loaded, and free of redundancy?
The description is concise and well-structured, with each sentence adding value. It front-loads the purpose, provides usage guidance, and specifies return format, all in a few sentences without redundancy.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness3/5Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the complexity (3 parameters, no output schema), the description explains the return format but does not elaborate on the subject parameter or how num_results behaves. Additional details about the 'trusted CS education sites' would improve completeness. It is adequate but not thorough.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters2/5Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0%, so the description must compensate, but it does not explain the parameters (query, subject, num_results). The description only implies the query relates to CAIE topics, but fails to add meaning for subject or num_results, leaving gaps.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the verb 'Get' and resource 'educational web content', specifically targeting CAIE exam supplementation from trusted CS education sites. It distinguishes itself from sibling tools like search_examiner_reports and search_questions by emphasizing supplementary conceptual explanations.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines4/5Does the description explain when to use this tool, when not to, or what alternatives exist?
The description explicitly says 'Use when the student needs conceptual explanations beyond what mark schemes provide' and prioritizes official CAIE mark scheme points first. This provides clear context, though it could further specify when not to use or name alternative siblings.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
- Behavior4/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true and idempotentHint=true, so no repetition needed. Description adds valuable behavioral context: returns external web images only (not past paper images) and specifies return fields (URL, title, source domain). 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.
Conciseness5/5Is the description appropriately sized, front-loaded, and free of redundancy?
Efficiently organized: one-line purpose, contrast, bullet usage cases, return format. No redundant sentences. All information is front-loaded.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness3/5Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Tool has 3 parameters and no output schema. Description covers return fields but lacks parameter descriptions. For simple search tool, usage guidance is strong but missing parameter details leaves a gap.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters2/5Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0%, but the description does not explicitly explain the parameters. The 'query' parameter is implied through usage examples, but 'subject' and 'num_images' are not described at all. The description does not compensate for the lack of schema descriptions.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5Does the description clearly state what the tool does and how it differs from similar tools?
Explicitly states purpose: 'Find educational diagrams and illustrations for a CAIE topic.' Clearly differentiates from sibling tool get_questions by specifying it returns external web images, not past paper images. Provides a concrete example ('show me a binary tree diagram').
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines5/5Does the description explain when to use this tool, when not to, or what alternatives exist?
Explicitly tells when to use (visual explanation, supplementary illustrations) and when not to use (for question/mark scheme images, use get_questions with include_images=True). Names the alternative tool directly.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
- Behavior5/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint and idempotentHint, ensuring safe behavior. The description goes further by detailing exactly what is returned (e.g., mark schemes, image URLs, OCR text) and how include_images and include_ocr affect the output, providing comprehensive behavioral context.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness4/5Is the description appropriately sized, front-loaded, and free of redundancy?
The description is concise and front-loaded, but it is a single paragraph that mixes parameter info with return values. A slightly more structured format could improve readability, but it is not overly verbose.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness5/5Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given 6 parameters with no required fields and no output schema, the description covers all essential aspects: purpose, ID input formats, detail options, image/OCR flags, and return structure. It is self-contained and sufficient for an agent to use the tool correctly.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters4/5Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The description explains the purpose of 5 out of 6 parameters (question_ids, question_ids_list, detail, include_images, include_ocr), compensating for the 0% schema coverage. Only max_key_points is not explained explicitly, but its effect is partially implied by the mention of key mark scheme points.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool fetches full question details and mark schemes for selected IDs, using a specific verb and resource. It distinguishes itself from sibling tools like search_questions, which is for searching by keywords.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines4/5Does the description explain when to use this tool, when not to, or what alternatives exist?
The description explains the two parameter options for IDs and the default detail mode, giving clear usage context. However, it lacks explicit guidance on when not to use this tool versus alternatives like search_questions.
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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