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Launches MCP — wraps Launch Library 2 API (ll.thespacedevs.com, free, no auth)

Status
Healthy
Last Tested
Transport
Streamable HTTP
URL
Repository
pipeworx-io/mcp-launches
GitHub Stars
0

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Usage analytics

See which tools your agents call, how often, and when, so you can understand usage patterns and catch anomalies.

100% free. Your data is private.
Tool DescriptionsB

Average 3.7/5 across 8 of 8 tools scored. Lowest: 2.9/5.

Server CoherenceA
Disambiguation3/5

The launch-related tools (get_launch, get_past_launches, get_upcoming_launches, search_launches) have clear distinctions for retrieving specific, past, upcoming, or searched launches, but there is some overlap between get_launch and the others in terms of data returned. The memory tools (remember, recall, forget) are distinct from launch tools but serve a separate purpose, while discover_tools stands out as unrelated to the main domain, creating a split focus.

Naming Consistency4/5

Most tools follow a consistent verb_noun pattern (e.g., get_launch, search_launches, recall, forget), with clear and readable names. However, discover_tools deviates slightly by using 'discover' instead of a more standard verb like 'search' or 'find', and the tool set includes a mix of launch and memory operations without a unified naming theme across domains.

Tool Count4/5

With 8 tools, the count is reasonable and well-scoped for a server handling launch data and basic memory functions. It's not excessive, but the inclusion of discover_tools, which is unrelated to launches, makes the scope slightly broader than necessary, though still manageable.

Completeness3/5

For launch data, the tools provide good coverage for retrieving past, upcoming, specific, and searched launches, but lack any create, update, or delete operations, which might be expected if the server allowed modifying launch data. The memory tools offer basic CRUD (remember, recall, forget), but discover_tools introduces a separate functionality without clear integration, leaving minor gaps in a cohesive domain surface.

Available Tools

9 tools
ask_pipeworxAInspect

Ask a question in plain English and get an answer from the best available data source. Pipeworx picks the right tool, fills the arguments, and returns the result. No need to browse tools or learn schemas — just describe what you need. Examples: "What is the US trade deficit with China?", "Look up adverse events for ozempic", "Get Apple's latest 10-K filing".

ParametersJSON Schema
NameRequiredDescriptionDefault
questionYesYour question or request in natural language
Behavior4/5

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

With no annotations provided, the description carries full burden. It discloses key behavioral traits: the tool automatically selects data sources and fills arguments, handles natural language questions, and returns results. It doesn't mention limitations like rate limits, authentication needs, or error conditions, but provides substantial operational context beyond basic purpose.

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?

The description is efficiently structured: first sentence states core purpose, second explains the mechanism, third provides usage guidance, and final sentence offers concrete examples. Every sentence adds value with zero redundant information, making it easy to parse and understand quickly.

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?

Given the tool's complexity (natural language processing with automatic tool selection) and lack of annotations/output schema, the description provides strong context about what the tool does and how to use it. It could benefit from mentioning response format or error handling, but the examples help illustrate expected usage patterns adequately.

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

Parameters3/5

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

Schema description coverage is 100% with one parameter ('question') well-documented in the schema. The description adds minimal parameter semantics beyond the schema, only reinforcing that questions should be 'in plain English' or 'natural language.' This meets the baseline for high schema coverage.

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's purpose: 'Ask a question in plain English and get an answer from the best available data source.' It specifies the verb ('ask'), resource ('answer'), and mechanism ('Pipeworx picks the right tool, fills the arguments'). It distinguishes from siblings by emphasizing natural language input versus structured tool selection.

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?

The description explicitly states when to use this tool: 'No need to browse tools or learn schemas — just describe what you need.' It contrasts with sibling tools that likely require specific parameters or tool knowledge, providing clear guidance on using this as a high-level query interface versus lower-level tool invocation.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

discover_toolsAInspect

Search the Pipeworx tool catalog by describing what you need. Returns the most relevant tools with names and descriptions. Call this FIRST when you have 500+ tools available and need to find the right ones for your task.

ParametersJSON Schema
NameRequiredDescriptionDefault
limitNoMaximum number of tools to return (default 20, max 50)
queryYesNatural language description of what you want to do (e.g., "analyze housing market trends", "look up FDA drug approvals", "find trade data between countries")
Behavior3/5

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

No annotations are provided, so the description carries the full burden. It discloses key behavioral traits: it's a search operation that returns relevant tools with names and descriptions, and it's intended for initial discovery. However, it lacks details on rate limits, error handling, or response format, which are important for a tool with no output schema.

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?

The description is appropriately sized and front-loaded, with two sentences that efficiently convey purpose and usage guidelines without wasted words. Every sentence adds clear value, making it highly concise and well-structured.

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?

Given the tool's complexity (a search tool with 2 parameters, no output schema, and no annotations), the description is mostly complete. It covers purpose and usage well but lacks details on behavioral aspects like response format or limitations, which would be helpful since there's no output schema. It's adequate but has minor gaps.

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

Parameters3/5

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

Schema description coverage is 100%, so the schema already documents both parameters (query and limit) thoroughly. The description does not add any parameter-specific information beyond what's in the schema, such as examples or constraints not covered. Baseline 3 is appropriate as the schema does the heavy lifting.

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's purpose with specific verbs ('search', 'returns') and resource ('Pipeworx tool catalog'), and explicitly distinguishes it from sibling tools by emphasizing its role in finding tools among 500+ available options, which is distinct from the launch-related siblings listed.

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?

The description provides explicit usage guidelines: 'Call this FIRST when you have 500+ tools available and need to find the right ones for your task.' This clearly indicates when to use it (as an initial step for tool discovery in large catalogs) and implicitly suggests alternatives (sibling tools like search_launches for more specific queries) by context.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

forgetCInspect

Delete a stored memory by key.

ParametersJSON Schema
NameRequiredDescriptionDefault
keyYesMemory key to delete
Behavior2/5

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

With no annotations provided, the description carries full burden for behavioral disclosure. It states this is a deletion operation, which implies destructive behavior, but doesn't specify whether deletion is permanent, reversible, requires specific permissions, or has side effects. For a destructive tool with zero annotation coverage, this is insufficient.

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?

The description is a single, efficient sentence with zero waste. It's appropriately sized for a simple tool and front-loads the essential information (delete operation).

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a destructive operation with no annotations and no output schema, the description is incomplete. It doesn't explain what happens after deletion (success confirmation, error handling), whether there are constraints on deletable memories, or how this tool relates to sibling memory tools. The minimal description leaves significant gaps.

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

Parameters3/5

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

Schema description coverage is 100%, so the schema already documents the single 'key' parameter. The description adds minimal value by restating 'by key' but doesn't provide additional context about key format, validation, or examples beyond what the schema provides.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the action ('Delete') and resource ('a stored memory by key'), making the tool's purpose immediately understandable. However, it doesn't differentiate from sibling tools like 'recall' or 'remember' which likely interact with the same memory system, so it doesn't reach the highest score.

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

Usage Guidelines2/5

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

The description provides no guidance on when to use this tool versus alternatives. There's no mention of prerequisites, when deletion is appropriate, or what happens to deleted memories. Given sibling tools like 'recall' and 'remember', some context about usage distinctions would be helpful.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

get_launchAInspect

Get full details for a specific launch by ID. Returns name, time, status, pad, rocket, mission, orbit info, video links, and mission patches.

ParametersJSON Schema
NameRequiredDescriptionDefault
idYesLaunch Library 2 launch UUID (e.g. "a6ce038e-4d89-4265-b47f-1c6ee5863f84")
Behavior3/5

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It describes the return data (name, net time, etc.), which adds value beyond the input schema. However, it lacks details on error handling, rate limits, authentication needs, or whether it's a read-only operation, leaving gaps in behavioral context for the agent.

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?

The description is front-loaded with the core purpose in the first sentence, followed by a concise list of returned data. Every sentence earns its place by providing essential information without redundancy, making it efficient and well-structured for quick understanding.

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?

Given the tool's low complexity (1 parameter, no output schema, no annotations), the description is mostly complete. It explains what the tool does and what data it returns, but without an output schema, it could benefit from more detail on the return format or error cases. The lack of annotations means the description should cover more behavioral aspects, which it partially does but not fully.

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

Parameters3/5

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

The schema description coverage is 100%, so the input schema already fully documents the 'id' parameter. The description does not add any additional meaning or context beyond what the schema provides, such as examples of valid IDs or usage notes, resulting in a baseline score of 3.

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 specific action ('Get full details') and resource ('a specific launch by its Launch Library 2 ID'), and distinguishes it from siblings by focusing on individual launch details rather than lists or searches. It explicitly mentions the data returned, which helps differentiate its purpose from the sibling tools that handle multiple launches.

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 implies usage context by specifying 'by its Launch Library 2 ID', suggesting this tool is for retrieving details when you have a specific launch ID. However, it does not explicitly state when to use this tool versus alternatives like get_past_launches or search_launches, nor does it provide exclusions or prerequisites, leaving some ambiguity for the agent.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

get_past_launchesCInspect

Browse past rocket launches. Returns launch name, actual launch time, status, launch pad, rocket type, and mission description.

ParametersJSON Schema
NameRequiredDescriptionDefault
limitNoNumber of launches to return (default 10)
Behavior2/5

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

No annotations are provided, so the description carries full burden. It discloses what data is returned (name, net launch time, etc.) but lacks behavioral context like rate limits, authentication needs, pagination behavior, error conditions, or whether this is a read-only operation. The description doesn't contradict annotations (none exist).

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?

Two concise sentences: one stating the action and source, another listing returned fields. Efficiently front-loaded with core purpose. Could be slightly improved by integrating return details more smoothly.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a simple read operation with 1 optional parameter and no output schema, the description is adequate but has gaps. It specifies the data source and return fields, but lacks context on limitations, errors, or sibling tool differentiation. Without annotations or output schema, more behavioral transparency would be beneficial.

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

Parameters3/5

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

Schema description coverage is 100%, so the schema already documents the 'limit' parameter with its default. The description adds no parameter-specific information beyond what's in the schema. Baseline 3 is appropriate when schema does the heavy lifting.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's purpose: 'Get past rocket launches from Launch Library 2' with specific verb+resource. It distinguishes from 'get_upcoming_launches' by specifying 'past' launches, but doesn't explicitly differentiate from 'get_launch' (singular) or 'search_launches'.

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

Usage Guidelines2/5

Does 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 doesn't mention when to choose this over 'get_launch' (singular), 'get_upcoming_launches', or 'search_launches'. Only implicit context from 'past' in the name.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

get_upcoming_launchesCInspect

Check upcoming rocket launches. Returns launch name, scheduled time, status, launch pad, rocket type, and mission description.

ParametersJSON Schema
NameRequiredDescriptionDefault
limitNoNumber of launches to return (default 10)
Behavior2/5

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

With no annotations, the description carries the full burden of behavioral disclosure. It mentions the return fields (name, net launch time, etc.) but lacks details on permissions, rate limits, pagination, or error handling. For a read operation with external data, this is a significant gap in transparency.

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?

The description is a single, efficient sentence that front-loads the purpose and key return data. It avoids redundancy but could be slightly more structured by separating usage context from output details.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given no annotations and no output schema, the description provides basic purpose and return fields but misses behavioral aspects like data freshness, source reliability, or error cases. It's adequate for a simple read tool but lacks depth for robust agent use.

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

Parameters3/5

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

Schema description coverage is 100%, with the single parameter 'limit' documented in the schema. The description adds no parameter-specific information beyond implying a default behavior for upcoming launches, so it meets the baseline of 3 without compensating for any gaps.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the action ('Get upcoming rocket launches') and the data source ('from Launch Library 2'), distinguishing it from sibling tools like get_past_launches. It specifies the verb (get) and resource (upcoming rocket launches), though it doesn't explicitly contrast with search_launches in scope or method.

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

Usage Guidelines2/5

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

No guidance is provided on when to use this tool versus alternatives like get_past_launches or search_launches. The description implies it's for upcoming launches but doesn't specify contexts, exclusions, or prerequisites, leaving usage decisions ambiguous.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

recallAInspect

Retrieve a previously stored memory by key, or list all stored memories (omit key). Use this to retrieve context you saved earlier in the session or in previous sessions.

ParametersJSON Schema
NameRequiredDescriptionDefault
keyNoMemory key to retrieve (omit to list all keys)
Behavior4/5

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It effectively describes the tool's behavior: retrieving memories by key or listing all memories, with persistence across sessions. However, it doesn't mention error handling (e.g., what happens if key doesn't exist) or performance characteristics.

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?

The description is perfectly concise with two sentences that each serve distinct purposes: the first explains the core functionality, the second provides usage context. There's no wasted language or redundancy.

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?

For a simple retrieval tool with good schema coverage but no output schema, the description provides adequate context about what the tool does and when to use it. However, without an output schema, it doesn't describe the return format (e.g., structure of retrieved memories), leaving some ambiguity.

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?

The schema has 100% description coverage, so the baseline is 3. The description adds meaningful context by explaining the semantic difference between providing a key (retrieve specific memory) and omitting it (list all keys), which goes beyond the schema's technical specification.

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's purpose with specific verbs ('retrieve', 'list') and resources ('previously stored memory', 'all stored memories'). It distinguishes this tool from siblings like 'remember' (which stores) and 'forget' (which deletes) by focusing on retrieval operations.

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?

The description provides explicit guidance on when to use this tool: 'to retrieve context you saved earlier in the session or in previous sessions.' It also specifies when to omit the key parameter ('omit key to list all keys'), giving clear operational instructions.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

rememberAInspect

Store a key-value pair in your session memory. Use this to save intermediate findings, user preferences, or context across tool calls. Authenticated users get persistent memory; anonymous sessions last 24 hours.

ParametersJSON Schema
NameRequiredDescriptionDefault
keyYesMemory key (e.g., "subject_property", "target_ticker", "user_preference")
valueYesValue to store (any text — findings, addresses, preferences, notes)
Behavior4/5

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It does an excellent job describing key behavioral traits: it explains the persistence model (authenticated vs. anonymous), storage duration (24 hours for anonymous), and the cross-tool context capability. The only minor gap is lack of information about storage limits or potential errors, but overall it provides substantial behavioral context beyond basic functionality.

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?

The description is perfectly concise with just two sentences that each earn their place. The first sentence states the core functionality with examples, and the second provides critical behavioral context about persistence. There's zero wasted language, and the most important information is 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?

For a 2-parameter tool with no annotations and no output schema, the description provides excellent context about what the tool does, when to use it, and key behavioral characteristics. The only minor gap is the lack of information about return values or potential errors, but given the tool's relative simplicity and the comprehensive behavioral disclosure, this is nearly complete.

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

Parameters3/5

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

Schema description coverage is 100%, so the schema already fully documents both parameters. The description doesn't add any parameter-specific information beyond what's in the schema. However, it does provide context about what types of values are appropriate to store ('intermediate findings, user preferences, or context'), which gives semantic meaning to the 'value' parameter. Baseline 3 is appropriate when schema does the heavy lifting.

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 specific action ('Store a key-value pair') and resource ('in your session memory'), distinguishing it from sibling tools like 'recall' (likely for retrieval) and 'forget' (likely for deletion). It provides concrete examples of what can be stored ('intermediate findings, user preferences, or context across tool calls'), making the purpose unambiguous and well-differentiated.

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?

The description explicitly states when to use this tool ('to save intermediate findings, user preferences, or context across tool calls') and provides clear context about persistence differences ('Authenticated users get persistent memory; anonymous sessions last 24 hours'). This gives the agent specific guidance on appropriate use cases and important behavioral constraints.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

search_launchesBInspect

Search launches by keyword (rocket name, mission, agency). Returns matching launches with name, time, status, pad, rocket, and mission.

ParametersJSON Schema
NameRequiredDescriptionDefault
limitNoNumber of results to return (default 10)
queryYesSearch keyword (e.g. "Falcon 9", "Artemis", "ISS")
Behavior2/5

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

With no annotations provided, the description carries full burden. It discloses the return format (matching launches with specific fields) but lacks critical behavioral details: it doesn't mention pagination, rate limits, authentication needs, error handling, or whether results are sorted. For a search tool, this is a significant gap in transparency.

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?

The description is efficiently structured in two sentences: the first states the purpose and search scope, the second specifies the return format. Every word earns its place with no redundancy or fluff, making it easy to parse quickly.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool's moderate complexity (search with two parameters), no annotations, and no output schema, the description is partially complete. It covers the basic purpose and return fields but omits behavioral aspects like result limits, sorting, or error cases. It's adequate for minimal use but lacks depth for robust agent operation.

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

Parameters3/5

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

Schema description coverage is 100%, so the schema already documents both parameters fully. The description adds minimal value beyond the schema: it mentions searchable fields (rocket name, mission name, agency) which helps interpret 'query', but doesn't provide additional syntax or format details. This meets the baseline for high schema coverage.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's purpose: 'Search launches by keyword' with specific searchable fields (rocket name, mission name, agency, etc.). It distinguishes from sibling tools by focusing on keyword search rather than retrieving specific launches (get_launch) or time-based lists (get_past_launches, get_upcoming_launches). However, it doesn't explicitly name these alternatives for full differentiation.

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

Usage Guidelines3/5

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

The description implies usage context through 'Search launches by keyword' and the examples, suggesting it's for finding launches matching search terms rather than retrieving by ID or time. However, it lacks explicit guidance on when to use this versus siblings like get_past_launches for chronological listings or get_launch for specific IDs, 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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