MCP Server Replicate

by gerred

Overview Schema Related Servers Score Discussions

Python

Remote

Server Quality Checklist

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Latest release: v1.0.0
Disambiguation4/5
Most tools have distinct purposes, but there is some overlap between 'search_available_models' and 'search_models' that could cause confusion, as both involve searching for models. The descriptions help differentiate them slightly, but the boundaries are not entirely clear.
Naming Consistency5/5
Tool names follow a consistent snake_case pattern with clear verb_noun structures throughout, such as 'create_prediction', 'get_model_details', and 'list_collections'. There are no deviations in naming conventions, making the set predictable and readable.
Tool Count3/5
With 18 tools, the count is borderline high for a server focused on Replicate's AI model platform. While it covers various aspects like predictions, models, and webhooks, it may feel slightly heavy and could benefit from consolidation to reduce complexity.
Completeness4/5
The tool set provides good coverage for the Replicate domain, including prediction lifecycle (create, get, cancel), model discovery (list, get, search), and webhook management. Minor gaps exist, such as missing tools for updating or deleting predictions or models, but agents can work around these with the available operations.
Average 2.9/5 across 18 of 18 tools scored. Lowest: 1.7/5.
See the Tool Scores section below for per-tool breakdowns.
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This repository is licensed under MIT License.
This repository includes a README.md file.
No tool usage detected in the last 30 days. Usage tracking helps demonstrate server value.
Tip: use the "Try in Browser" feature on the server page to seed initial usage.
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```
{
  "$schema": "https://glama.ai/mcp/schemas/server.json",
  "maintainers": [
    "your-github-username"
  ]
}
```
Then . Browse examples.
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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

Behavior1/5
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 but offers almost none. 'Handle resource subscription requests' doesn't indicate whether this creates a persistent subscription, what happens when subscribed, whether authentication is required, potential side effects, or what the tool actually does beyond the vague 'handle' verb. This is inadequate for a tool that presumably establishes some ongoing relationship with resources.
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 extremely concise at just 4 words, which could be appropriate if it were more informative. However, this brevity results in under-specification rather than efficient communication. The single sentence is front-loaded but doesn't contain enough substance to be truly helpful.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness1/5
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a subscription tool with no annotations, no output schema, and 0% schema description coverage, the description is completely inadequate. It doesn't explain what 'generation' refers to, what subscribing achieves, what the response looks like, or any behavioral characteristics. Given the complexity implied by the sibling tools (prediction, generation, webhooks), this description leaves critical gaps about the tool's purpose and operation.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters2/5
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The description provides zero information about parameters, while the schema has 0% description coverage for the single parameter 'request'. The schema shows 'request' contains 'uri' and 'session_id' sub-parameters, but neither the description nor schema descriptions explain what format the URI should follow, what constitutes a valid session_id, or what 'SubscriptionRequest' actually means in this context. The description fails to compensate for the complete lack of schema documentation.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose2/5
Does the description clearly state what the tool does and how it differs from similar tools?
The description 'Handle resource subscription requests' is vague and tautological - it essentially restates the tool name 'subscribe_to_generation' without specifying what kind of resources or what 'generation' refers to. While it indicates this is for subscription operations, it doesn't clarify what 'generation' means in this context or distinguish it from sibling tools like 'unsubscribe_from_generation'.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines1/5
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 this subscription is needed, or how it differs from related tools like 'unsubscribe_from_generation' or 'create_prediction'. The agent receives no contextual guidance about appropriate use cases.
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?
No annotations are provided, so the description carries the full burden of behavioral disclosure. It mentions 'status and results' and implies a retrieval operation, but doesn't describe key behaviors: whether it's idempotent, if it polls or waits (hinted by 'wait' parameter but not explained), error handling, or response format. For a tool with parameters like 'wait' and 'max_retries', 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 states the core purpose without unnecessary words. It's appropriately sized for a simple tool, though it could be more informative. The structure is front-loaded with the main action, but it lacks elaboration that might be needed given the tool's complexity.
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?
Given the tool has 3 parameters (with 0% schema coverage), no annotations, and no output schema, the description is incomplete. It doesn't explain the retrieval process, handle potential states (e.g., pending, completed), or detail the results format. For a prediction status tool, this leaves critical gaps in understanding how to use it effectively.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters2/5
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0%, so the schema provides no parameter descriptions. The description adds no information about the three parameters (prediction_id, wait, max_retries) beyond what's inferred from their names. It doesn't explain what prediction_id refers to, how wait affects behavior, or what max_retries controls. This fails to compensate for the low schema coverage.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose3/5
Does the description clearly state what the tool does and how it differs from similar tools?
The description states the tool's purpose ('Get the status and results of a prediction'), which is clear but vague. It specifies the verb 'Get' and resource 'prediction', but doesn't distinguish it from siblings like 'create_prediction' or 'cancel_prediction' beyond the basic action. The purpose is understandable but lacks specificity about what kind of prediction or context.
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. It doesn't mention prerequisites (e.g., needing a prediction_id from create_prediction), exclusions, or comparisons to siblings like cancel_prediction. Without such context, an agent might struggle to select this tool appropriately in a workflow.
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 carries the full burden of behavioral disclosure. 'Handle resource unsubscribe requests' implies a mutation operation but doesn't specify what happens after unsubscribing (e.g., whether it stops notifications, frees resources, or affects billing). It lacks details on permissions needed, error conditions, or side effects, leaving critical behavioral traits undocumented.
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 extremely concise—a single sentence with no wasted words. It's front-loaded with the core action ('Handle resource unsubscribe requests') and doesn't include unnecessary elaboration. While under-specified, it's structurally efficient for its limited content.
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 mutation tool with no annotations, no output schema, and a parameter that's a nested object, the description is incomplete. It doesn't explain what 'generation' means in this context, what resources can be unsubscribed from, what the tool returns, or how it differs from 'cancel_prediction'. Given the complexity implied by the sibling tools (e.g., predictions, generations, webhooks), more context is needed for effective 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?
The description provides no parameter information beyond the generic 'resource unsubscribe requests'. With 0% schema description coverage and 1 parameter (a nested object with 2 sub-parameters), the schema fully documents the input structure. The description adds no meaningful semantics about what 'request' should contain or how 'uri' and 'session_id' relate to unsubscribing, so it 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.
Purpose2/5
Does the description clearly state what the tool does and how it differs from similar tools?
The description 'Handle resource unsubscribe requests' restates the tool name 'unsubscribe_from_generation' in slightly different words, making it tautological. It doesn't specify what 'resource' means or what 'generation' refers to, leaving the purpose vague. The description fails to distinguish this tool from its sibling 'subscribe_to_generation' beyond the obvious direction difference.
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. It doesn't mention prerequisites, conditions for unsubscribing, or relationships with other tools like 'subscribe_to_generation' or 'cancel_prediction'. The agent must infer usage from the name alone, which is insufficient for effective tool selection.
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?
No annotations are provided, so the description carries full burden. It states the tool generates an image but doesn't disclose behavioral traits such as whether it's a read/write operation, potential costs, rate limits, authentication needs, or what happens on failure (e.g., error handling). The description is minimal and misses critical context for a generative tool.
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 extremely concise with a single sentence that directly states the tool's function. It's front-loaded with no wasted words, making it easy to parse quickly. However, this conciseness comes at the cost of completeness, as noted in other dimensions.
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?
Given the tool's complexity (7 parameters, generative function), lack of annotations, and no output schema, the description is incomplete. It doesn't explain what the tool returns (e.g., image URL, binary data), error conditions, or usage constraints. For an image generation tool with rich parameters, this minimal description leaves too much unspecified.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters2/5
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0%, so the description must compensate. It only mentions 'specified parameters' generically without explaining what parameters exist (e.g., prompt, style, quality) or their meanings. With 7 parameters including one required ('prompt'), this lack of semantic detail is a significant gap, failing to add value beyond the bare schema.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose3/5
Does the description clearly state what the tool does and how it differs from similar tools?
The description states the tool's purpose ('Generate an image') which is clear but vague. It specifies the action and resource but lacks detail about what kind of image generation (e.g., AI-generated, from templates) or how it differs from sibling tools like 'create_prediction' or 'open_image_with_system'. It's not tautological but doesn't provide specific differentiation.
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. It mentions 'using the specified parameters' but doesn't indicate context, prerequisites, or exclusions. With multiple sibling tools like 'create_prediction' and 'search_models', this lack of guidance leaves the agent uncertain about tool selection.
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?
No annotations are provided, so the description carries the full burden of behavioral disclosure. It states the tool retrieves information, implying a read-only operation, but does not specify authentication requirements, rate limits, error handling, or what 'detailed information' includes. This leaves significant gaps in understanding the tool's behavior.
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 no wasted words. It is appropriately sized for a simple tool and front-loaded with the core purpose, making it easy to scan and understand quickly.
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?
Given the lack of annotations and output schema, the description is incomplete. It does not explain what 'detailed information' includes, such as fields or structure of the returned data, nor does it cover behavioral aspects like error cases. For a tool with no structured documentation, this leaves too many unknowns for effective use.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters2/5
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The input schema has 1 parameter with 0% description coverage, and the tool description does not add any semantic information about the parameter. It does not explain what a 'collection_slug' is, its format, or how to obtain it. This fails to compensate for the low schema coverage, leaving the parameter poorly documented.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose3/5
Does the description clearly state what the tool does and how it differs from similar tools?
The description states the tool's purpose ('Get detailed information about a specific collection'), which is clear but vague. It specifies the verb ('Get') and resource ('collection'), but lacks detail on what 'detailed information' entails. It does not distinguish from sibling tools like 'list_collections', which likely lists collections rather than providing details for one.
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. It does not mention prerequisites, such as needing a collection slug, or compare it to sibling tools like 'list_collections' or 'get_model_details'. There is no explicit or implied context for usage.
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 carries the full burden of behavioral disclosure. It mentions 'semantic search' but doesn't explain what that means operationally—e.g., how results are ranked, if there are rate limits, authentication needs, or what the output format looks like. It lacks details on critical behavioral traits for a search tool.
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 no wasted words. It is appropriately sized and front-loaded, making it easy to parse quickly.
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?
Given no annotations, no output schema, and 0% schema description coverage for a search tool with 1 parameter, the description is incomplete. It doesn't explain return values, error conditions, or behavioral nuances, leaving significant gaps for an AI agent to use it correctly.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters2/5
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0%, so the description must compensate. It mentions 'semantic search' but doesn't add meaning beyond the schema's 'query' parameter—e.g., no examples of query formats, expected input semantics, or how the query is used in search. With 1 parameter and low coverage, this is insufficient.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose3/5
Does the description clearly state what the tool does and how it differs from similar tools?
The description 'Search for models using semantic search' states the verb ('search') and resource ('models'), but is vague about scope and differentiation from siblings like 'search_available_models' and 'list_models'. It specifies 'semantic search' but doesn't clarify what that entails compared to other search/list tools.
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 'search_available_models' or 'list_models'. The description implies a search context but offers no explicit when/when-not instructions or prerequisites for usage.
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 carries the full burden of behavioral disclosure. It states the tool validates parameters, implying a read-only check, but doesn't specify if it returns validation results, errors, or success status, nor does it mention any side effects, permissions, or rate limits. This leaves the agent uncertain about the tool's behavior beyond its 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 extremely concise with a single sentence, 'Validate parameters against a template schema.', which is front-loaded and wastes no words. It efficiently conveys the core idea without unnecessary elaboration, making it easy to parse quickly.
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?
Given the complexity of validation (involving parameters and schemas), no annotations, no output schema, and 1 parameter with 0% schema coverage, the description is incomplete. It doesn't explain what happens after validation, what the output might be, or how to interpret results, leaving significant gaps for the agent to operate effectively.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters2/5
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The schema description coverage is 0%, and the description adds minimal meaning beyond the schema. It mentions 'parameters' and 'template schema', which loosely relates to the 'input' parameter, but doesn't explain what 'input' should contain (e.g., parameters object and template reference) or the expected structure. With 1 parameter and low coverage, the description fails to compensate adequately.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose3/5
Does the description clearly state what the tool does and how it differs from similar tools?
The description 'Validate parameters against a template schema' clearly states the tool's function (validation) and target (parameters and template schema), but it's vague about what 'template schema' refers to and doesn't distinguish it from sibling tools like 'list_templates' or 'create_prediction'. It provides a basic purpose without specificity.
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. It doesn't mention prerequisites, such as needing a template from 'list_templates', or differentiate it from other validation-related operations that might be implied by siblings like 'create_prediction'. The description offers no context for usage decisions.
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 carries full burden for behavioral disclosure. It states the action ('Cancel') but doesn't explain what cancellation entails (e.g., whether it's reversible, if resources are freed, error conditions, or response format). For a mutation tool with zero annotation coverage, this leaves significant behavioral gaps.
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 extremely concise at just four words, front-loading the essential action and target. Every word earns its place with zero redundancy or unnecessary elaboration.
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?
Given this is a mutation tool with no annotations, no output schema, and minimal parameter documentation, the description is inadequate. It doesn't explain what happens after cancellation, potential side effects, error scenarios, or how this interacts with sibling prediction tools, leaving the agent with insufficient context for reliable invocation.
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 description doesn't mention parameters at all, and with 0% schema description coverage for the single 'prediction_id' parameter, the schema provides only basic type information. However, since there's only one parameter and its purpose is somewhat inferable from context, this meets the baseline for minimal viability without adding meaningful semantic value.
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 ('Cancel') and target resource ('a running prediction'), providing a specific verb+resource combination. However, it doesn't distinguish this tool from potential alternatives among its siblings, as there's no explicit comparison to tools like 'get_prediction' or 'create_prediction' that might handle prediction lifecycle differently.
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 minimal guidance with 'running prediction' implying usage context, but lacks explicit when-to-use rules, prerequisites (e.g., prediction must be active), or alternatives (e.g., what to do if prediction is already completed). No exclusions or comparisons to sibling tools are mentioned.
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?
No annotations are provided, so the description carries the full burden. It mentions the confirmation mechanism and return behavior, which adds some context. However, it lacks critical details like authentication requirements, rate limits, cost implications, or whether this is a read/write operation, leaving significant gaps in behavioral understanding.
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 appropriately sized and front-loaded, starting with the core purpose. The Args and Returns sections are structured but slightly verbose; every sentence adds value, such as clarifying the confirmation logic, making it efficient overall.
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?
Given the complexity (2 parameters with nested objects, no output schema, and no annotations), the description is incomplete. It explains the confirmation flow but omits details on error handling, response formats, or integration with siblings like 'get_prediction'. For a tool that creates predictions, this leaves too many unknowns.
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 0%, so the description must compensate. It explains that 'input' includes 'Model input parameters including version or model details' and 'confirmed' relates to user confirmation, adding meaning beyond the bare schema. However, it doesn't detail the structure of 'input' or provide examples, so it only partially addresses the coverage gap.
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 ('Create a new prediction') and resource ('using a specific model version on Replicate'), making the purpose understandable. However, it doesn't explicitly differentiate from sibling tools like 'generate_image' or 'subscribe_to_generation', which might also involve prediction-like operations, so it misses the highest clarity level.
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. It doesn't mention prerequisites, such as needing a model version, or compare it to siblings like 'generate_image' or 'search_available_models'. Without this context, users might struggle to select the correct tool.
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?
No annotations are provided, so the description carries the full burden of behavioral disclosure. It states the tool retrieves information, implying it is a read-only operation, but does not disclose other behavioral traits such as authentication needs, rate limits, error handling, or what 'detailed information' entails. For a tool with zero annotation coverage, this is a significant gap.
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 the main purpose stated clearly in the first sentence. The Args and Returns sections are structured efficiently, adding necessary details without redundancy. Every sentence earns its place, making it concise and well-organized.
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?
Given the complexity of a tool with one parameter but no annotations and no output schema, the description is incomplete. It lacks details on what 'detailed information' includes, how errors are handled, or any behavioral context. For a tool in this context, more information is needed to ensure the agent can use it effectively.
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 description adds some meaning beyond the input schema by specifying the format of 'model_id' as 'owner/name', which is not covered in the schema (0% description coverage). However, it does not fully compensate for the lack of schema descriptions, as it only addresses one parameter and does not explain its significance or constraints in detail.
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 detailed information about a specific model.' It specifies the verb ('Get') and resource ('model'), but does not distinguish it from sibling tools like 'list_models' or 'search_models', which might provide similar or overlapping functionality. The purpose is clear but lacks sibling differentiation.
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. It does not mention sibling tools such as 'list_models' or 'search_models', nor does it specify prerequisites or contexts for usage. The only implied usage is when detailed information for a specific model is needed, but this is not explicit.
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?
No annotations are provided, so the description carries the full burden of behavioral disclosure. It states the tool lists models with optional filtering, but it does not cover important aspects such as pagination, rate limits, authentication requirements, or what the output format looks like. This leaves significant gaps in understanding how the tool behaves in practice.
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 that directly states the tool's purpose and key feature (filtering by owner). It is front-loaded with no unnecessary words, making it highly concise and well-structured for quick understanding.
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?
Given the lack of annotations and output schema, the description is incomplete. It does not address behavioral traits like pagination or error handling, and while it mentions filtering, it does not explain the return values or any limitations. For a tool with no structured support, more context is needed to be fully helpful.
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 description adds meaning by specifying that the 'owner' parameter is for 'optional filtering', which clarifies its purpose beyond the schema's title 'Owner'. However, with 0% schema description coverage and only one parameter, the description provides basic context but does not fully compensate for the lack of detailed schema documentation, aligning with the baseline for minimal param info.
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 verb ('List') and resource ('available models on Replicate'), making the purpose specific and understandable. However, it does not explicitly distinguish this tool from sibling tools like 'search_available_models' or 'search_models', which might offer similar functionality, so it falls short of a perfect 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 mentions 'optional filtering by owner', which provides some implied context for usage, but it does not offer explicit guidance on when to use this tool versus alternatives like 'search_available_models' or 'search_models'. No exclusions or detailed scenarios are provided, resulting in minimal guidance.
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?
No annotations are provided, so the description carries full burden. It states it 'lists' hardware options, implying a read-only operation, but doesn't disclose behavioral traits like whether it requires authentication, has rate limits, returns paginated results, or what format the output takes. This is a significant gap for a tool with zero annotation coverage.
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 that directly states the tool's purpose without unnecessary words. It's front-loaded and appropriately sized for a simple listing tool.
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?
Given no annotations, no output schema, and a simple purpose, the description is incomplete. It lacks details on output format, authentication needs, or usage context, which are essential for an AI agent to invoke it correctly. The simplicity of the tool doesn't excuse these gaps.
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 tool has 0 parameters, and schema description coverage is 100%, so no parameter documentation is needed. The description doesn't add param info beyond the schema, but with no params, a baseline of 4 is appropriate as there's nothing to compensate for.
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 ('List') and resource ('available hardware options for running models'), providing specific purpose. However, it doesn't differentiate from sibling tools like 'list_collections' or 'list_models' beyond the hardware focus, missing explicit distinction.
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. The description implies it's for hardware options related to models, but there's no mention of prerequisites, when not to use it, or how it compares to siblings like 'search_available_models' or 'get_model_details'.
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?
No annotations are provided, so the description carries full burden. It mentions returns a 'List of matching models with scores', adding some behavioral context about output format. However, it lacks details on pagination, rate limits, authentication needs, or error conditions, which are critical for a search operation with potential large datasets.
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 structured Args and Returns sections. Every sentence earns its place by clarifying inputs and outputs without redundancy, making it efficient and easy to parse.
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, 0% schema coverage, and no output schema, the description provides basic purpose and parameter hints but is incomplete. It doesn't cover behavioral aspects like response format details, error handling, or usage context relative to siblings, which are needed for a search tool in a model management system.
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 0%, so the schema provides no parameter descriptions. The description adds basic semantics for 'query' (search query describing desired model) and 'style' (optional style filter), compensating partially. However, it doesn't explain what 'style' entails (e.g., artistic, realistic) or query syntax, leaving gaps for the 2 parameters.
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 verb 'search' and resource 'available models', specifying it finds models matching a query. It distinguishes from siblings like 'list_models' (which likely lists all without filtering) and 'get_model_details' (which retrieves specific model info). However, it doesn't explicitly contrast with 'search_models' (a sibling with similar name), leaving some ambiguity.
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 like 'list_models' or 'search_models' (a sibling with similar name). The description implies usage for query-based filtering, but doesn't specify scenarios, prerequisites, or exclusions, leaving the agent to infer context from tool names alone.
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?
No annotations are provided, so the description carries the full burden of behavioral disclosure. It states it's a list operation, implying read-only behavior, but doesn't add any context beyond that—such as pagination, rate limits, authentication needs, or what 'available' entails. This leaves significant gaps for a tool with zero annotation coverage.
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 that directly states the tool's purpose without any wasted words. It's front-loaded and appropriately sized for a simple list tool.
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 simplicity (0 parameters, no output schema), the description is minimally adequate but lacks depth. Without annotations, it should ideally provide more behavioral context (e.g., response format, limitations). However, for a basic list operation, it meets the minimum threshold without being fully informative.
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 tool has 0 parameters, and schema description coverage is 100%, so there's no need for parameter details in the description. The baseline for this case is 4, as the description appropriately avoids redundant information and the schema fully covers the parameter aspect.
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 verb ('List') and resource ('available model collections on Replicate'), making the purpose unambiguous. However, it doesn't explicitly differentiate from sibling tools like 'list_models' or 'list_templates', which also list resources on Replicate, so it doesn't achieve full sibling differentiation.
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. With siblings like 'list_models', 'list_templates', and 'search_available_models', there's no indication of context, prerequisites, or exclusions for selecting this tool over others.
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 carries full burden but only states what the tool does without disclosing behavioral traits. It doesn't mention if this is a read-only operation, pagination behavior, rate limits, authentication needs, or what 'schemas' entail in the output, leaving significant gaps.
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 that front-loads the core action ('List all available templates') without any wasted words. It's appropriately sized for a simple tool with no parameters.
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 simplicity (0 params, no output schema, no annotations), the description is minimally adequate but lacks depth. It doesn't explain what 'schemas' includes or behavioral context, making it incomplete for full agent understanding despite the low complexity.
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 tool has 0 parameters with 100% schema description coverage, so no parameter documentation is needed. The description doesn't add param info, which is fine here, but it could slightly clarify output semantics (e.g., what 'schemas' means), keeping it from a perfect score.
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 verb ('List') and resource ('all available templates with their schemas'), making the purpose understandable. However, it doesn't differentiate from sibling tools like 'list_collections' or 'list_models' beyond mentioning templates specifically, which prevents a perfect 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 like 'validate_template_parameters' or other list tools. It lacks context about prerequisites, timing, or exclusions, offering only a basic statement of function.
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 carries the full burden of behavioral disclosure. It mentions that the tool opens an image with the system's default application and returns a status dict, but lacks details on permissions needed, potential side effects (e.g., launching external apps), error handling, or rate limits. This is inadequate for a tool that interacts with the system environment.
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 extremely concise and well-structured: a clear purpose statement followed by formatted Args and Returns sections. Every sentence earns its place, with no 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.
Completeness2/5
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's complexity (interacting with system applications) and the lack of annotations and output schema, the description is incomplete. It doesn't explain what the 'status dict' contains, potential security implications, or how errors are handled, leaving significant gaps for an AI agent to use it correctly in varied contexts.
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 description explicitly documents the single parameter 'image_url' and its purpose ('URL of the image to open'), adding meaningful context beyond the schema's 0% coverage. Since there's only one parameter and the description fully explains it, this compensates well for the schema's lack of descriptions.
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 ('Open an image URL') and the target resource ('with the system's default application'), providing a complete verb+resource combination. It distinguishes itself from sibling tools like 'generate_image' or 'get_prediction' by focusing on opening existing images rather than creating or retrieving them.
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. While it's clear what the tool does, there's no mention of prerequisites (e.g., needing a valid image URL), when not to use it (e.g., for non-image files), or alternative tools for similar functions among the siblings.
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 carries the full burden of behavioral disclosure. It mentions the tool retrieves a secret for verification purposes but lacks details on permissions required, whether the secret is sensitive or reusable, rate limits, or error conditions. This leaves significant gaps in understanding the tool's behavior.
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, clear sentence that directly states the tool's purpose without any unnecessary words. It is front-loaded and efficiently communicates the essential information, 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.
Completeness3/5
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's simplicity (0 parameters, no output schema, no annotations), the description is adequate but minimal. It covers the basic purpose but lacks context on security implications, return format, or integration with sibling tools like 'verify_webhook', which could enhance completeness for an AI agent.
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 tool has 0 parameters, and the input schema has 100% description coverage (though empty). The description does not need to compensate for any parameter documentation gaps, so it meets the baseline expectation for a parameterless tool by not introducing confusion.
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') and resource ('signing secret for verifying webhook requests'), making the tool's purpose immediately understandable. It distinguishes this tool from its sibling 'verify_webhook' by focusing on retrieving the secret rather than performing verification.
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 (when webhook verification is needed) but does not explicitly state when to use this tool versus alternatives like 'verify_webhook'. No guidance is provided on prerequisites, timing, or exclusions, leaving usage somewhat ambiguous.
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?
With no annotations provided, the description carries the full burden of behavioral disclosure. It explains the cryptographic verification process and return value (True/False), which is helpful. However, it doesn't mention error conditions, performance characteristics, or security implications beyond the basic verification logic.
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 structured and efficient: a clear purpose statement followed by well-organized Args and Returns sections. Every sentence earns its place by providing essential information without redundancy. The formatting with indentation enhances readability.
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 verification tool with 3 parameters and no output schema, the description provides excellent coverage of the tool's purpose, parameters, and return value. The main gap is the lack of error handling information, but given the tool's straightforward boolean return and the detailed parameter explanations, this is a minor omission.
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?
The description adds significant value beyond the input schema, which has 0% description coverage. It clearly explains each parameter's purpose: 'payload' is the webhook payload to verify, 'signature' comes from the X-Replicate-Signature header, and 'secret' should be obtained from get_webhook_secret. This provides essential context not present in the 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?
The description clearly states the specific action ('verify that a webhook request came from Replicate') and the technical method used ('using HMAC-SHA256'). It distinguishes this tool from all sibling tools, which focus on predictions, models, collections, and webhook management rather than verification.
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 provides clear context for when to use this tool (verifying webhook authenticity from Replicate) and references a related tool ('get_webhook_secret') for obtaining the secret parameter. However, it doesn't explicitly state when NOT to use it or name alternative verification methods.
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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