camera-mcp
Server Quality Checklist
Latest release: v0.1.0
- Disambiguation4/5
Most tools are clearly distinct, but camera_status and timelapse_status both report on a running timelapse job, which could cause some confusion. However, camera_status focuses on camera state and settings while timelapse_status is specifically about job progress, so the descriptions help differentiate them.
Naming Consistency4/5The naming follows a consistent pattern of domain_action (e.g., timelapse_start, camera_capture), which is predictable. The only minor inconsistency is video_create using 'video' instead of 'timelapse_' prefix, but this is a small deviation and the overall pattern remains clear.
Tool Count5/5With 9 tools, the server is well-scoped for camera control and timelapse workflows. Each tool serves a distinct and necessary function without redundancy, fitting comfortably within the ideal range.
Completeness4/5The tool surface covers the core lifecycle: camera settings/capture/focus, timelapse start/stop/status, session listing, and video creation. Minor gaps exist, such as no ability to delete sessions or download photos directly, but these are not critical for the primary workflow and can be worked around.
Average 3.9/5 across 9 of 9 tools scored. Lowest: 3.1/5.
See the Tool Scores section below for per-tool breakdowns.
- No community issues in the last 6 months
- 2 commits in the last 12 weeks
- No stable releases found
- No critical vulnerability alerts
- No high-severity vulnerability alerts
- No code scanning findings
- CI status not available
This repository is licensed under MIT License.
This repository includes a README.md file.
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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
- Behavior2/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are present, so the description carries full burden. It does not disclose side effects, persistence of settings, error handling, or requirements (e.g., camera connection). The examples hint at value formats but provide no behavioral context.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness5/5Is the description appropriately sized, front-loaded, and free of redundancy?
The description is one short sentence with four examples. It is front-loaded and every word earns its place with no fluff.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness3/5Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a simple two-parameter setter with an output schema, the description is minimally adequate with examples. However, missing usage guidelines and transparency prevent it from being fully complete in context.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters3/5Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 0%, but the description provides concrete examples (iso=800, aperture=5.6, shutterspeed=1/125, iso=Auto) that clarify how to format the value parameter for at least some settings. It doesn't cover all enum values, but adds partial meaning.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose4/5Does the description clearly state what the tool does and how it differs from similar tools?
The description states a specific verb and resource: 'カメラ設定を変更する' (changes camera settings), with examples of valid settings. It is clear what the tool does, though it doesn't explicitly differentiate from sibling tools like camera_status or camera_capture.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines2/5Does the description explain when to use this tool, when not to, or what alternatives exist?
No guidance is provided on when to use this tool versus alternatives. The examples imply usage but there is no explicit context about prerequisites, sequencing with camera_capture, or when not to use it.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
- 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 implies a read-only operation by stating it 'returns' data, but it does not explicitly confirm that no state is modified, nor does it mention potential failure modes (e.g., camera not connected) or authentication requirements. This is adequate for a simple status tool but not fully transparent.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness5/5Is the description appropriately sized, front-loaded, and free of redundancy?
The description is a single concise sentence in Japanese that front-loads the main action and output. It contains no fluff or repetition, and every word contributes to understanding the tool's purpose. This is an exemplary model of conciseness.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness4/5Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
The tool is simple (zero parameters) and has an output schema, so the description need not exhaustively explain return values. It covers the key aspects: connection status, settings, and running timelapse job. However, it omits potential edge-case behavior (e.g., what happens when the camera is disconnected) but this is minor given the output schema likely handles it.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters4/5Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The tool has zero parameters, and the input schema is an empty object with 100% schema coverage. The baseline for 0 parameters is 4, and the description does not need to explain any parameter semantics. The description adds no parameter-related information, which is appropriate given the absence of parameters.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose4/5Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states that the tool returns camera connection status, current settings, and the running timelapse job. It uses a specific verb ('返す' meaning 'returns') and identifies the resource (camera). However, it does not explicitly differentiate itself from sibling tools like timelapse_status, which might also return timelapse-related information, so it misses the full 5.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines2/5Does the description explain when to use this tool, when not to, or what alternatives exist?
The description provides no guidance on when to use this tool versus alternatives, nor does it mention any exclusions or prerequisites. It simply states what the tool does without context, leaving the agent to infer usage from the tool's name and sibling list.
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?
The description discloses a physical limitation (minimum focusing distance) and the live-view context, which adds behavioral context. However, with no annotations, it does not disclose whether the operation is reversible, if it requires specific camera states, or what side effects it might have on the camera state beyond the motor movement.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness5/5Is the description appropriately sized, front-loaded, and free of redundancy?
The description is extremely concise, using two short sentences to convey the action, parameter meaning, and a key physical limitation. Every sentence adds value, and the information is front-loaded with the main verb and resource.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness3/5Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
The description covers the core behavior and one limitation, but it lacks explanations for the 'size' and 'steps' parameters and does not describe return values or error scenarios. The existence of an output schema partially compensates for the return value gap, but the overall description is not fully complete for a 3-parameter tool.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters2/5Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The schema has 0% description coverage for parameters, so the description must compensate. It explains the 'direction' parameter (near/far) but does not explain 'size' or 'steps'. The enum values for 'size' (small/medium/large) and the purpose of 'steps' remain ambiguous, leaving the description insufficient for full parameter understanding.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the action (drive focus motor) and context (during live view), and defines the direction semantics (near/far). It easily distinguishes itself from sibling tools like camera_capture and camera_set, which have different purposes.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines4/5Does the description explain when to use this tool, when not to, or what alternatives exist?
The description clearly implies the tool is for adjusting focus during live view, providing clear context for when to use it. However, it does not explicitly mention alternatives or when not to use it, but the context is sufficiently clear.
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, the description discloses the core behavior (generating an mp4 from session photos) but omits details such as output location, failure behavior, or side effects on source data. It adds useful context about accepting a session name or folder path.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness5/5Is the description appropriately sized, front-loaded, and free of redundancy?
The description is two tight sentences with the action front-loaded and the parameter note on its own line. No filler or redundancy.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness3/5Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
It covers the tool's purpose and the key session input, and the output schema handles return-value documentation. However, it lacks guidance on optional parameters (fps/width) and expected side effects, leaving some ambiguity for a tool with no annotations.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters2/5Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The description explains the critical `session` parameter (session name from `timelapse_list` or folder path) but gives no meaning for `fps` or `width`, which have 0% schema coverage. Since the schema only supplies names/types/defaults, the description does not compensate for the majority of parameters.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5Does the description clearly state what the tool does and how it differs from similar tools?
The description states a clear action ('generate') and specific output ('timelapse video mp4') from 'a session's sequence of photos', which differentiates it from sibling capture/control tools. It also references `timelapse_list` for valid session names.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines4/5Does the description explain when to use this tool, when not to, or what alternatives exist?
It provides clear context that `session` should be a name from `timelapse_list` or a folder path, establishing a prerequisite. However, it does not explicitly name alternatives or state when not to use this tool.
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?
No annotations are provided, so the description carries the full burden. It discloses that a file is saved and the full path is returned, and explains the autofocus parameter behavior. However, it does not mention potential side effects like file overwriting, required permissions, or camera state changes.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness5/5Is the description appropriately sized, front-loaded, and free of redundancy?
The description is two short sentences, front-loaded with the core purpose and output. Every word earns its place—no fluff or repetition.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness4/5Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
The tool is simple with one optional parameter and an output schema. The description covers purpose, output, and parameter semantics. It is adequate for the tool's complexity, though it omits minor details like file naming conventions or storage location, which are not critical for invocation.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters4/5Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The schema has no descriptions (0% coverage), but the description adds meaningful detail: autofocus=False enables fixed-focus shooting, implying autofocus=True is the default. This fully clarifies the only parameter, which is helpful for the agent.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the action: take one shot and return the full path of the saved file. It uses a specific verb (capture) and resource (camera/file), and the output is explicit. This distinguishes it from sibling tools like timelapse_start or video_create.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines3/5Does the description explain when to use this tool, when not to, or what alternatives exist?
The description implies usage for single-shot capture, but does not explicitly mention when to use it over alternatives. The sibling names give context, but the description itself lacks 'when to use' or 'instead of' guidance.
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?
No annotations are provided, so the description carries the full burden. It discloses that the tool returns a list with folder and count, which implies a read-only operation, but it does not explicitly state safety, side effects, or response format details such as ordering or pagination.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness5/5Is the description appropriately sized, front-loaded, and free of redundancy?
The description is a single, concise sentence that states the purpose and content of the response without any extraneous information. It is front-loaded with the action and resource, making it easy to scan.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness4/5Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a simple, parameterless list tool with an output schema, the description adequately covers what is returned. It lacks details like ordering or session fields, but given the simplicity and presence of an output schema, it is sufficiently complete.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters4/5Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The tool has zero parameters, and the schema is empty with 100% coverage. No parameter explanation is needed in the description, and the baseline for zero-parameter tools is 4, which is appropriate here.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool returns a list of past timelapse sessions with folders and counts. The verb '返す' (returns) and specific resource '過去のタイムラプスセッション一覧' make the purpose unambiguous, and it is distinct from sibling tools like timelapse_status by focusing on historical sessions.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines3/5Does the description explain when to use this tool, when not to, or what alternatives exist?
The description implies use for viewing historical session data but does not explicitly mention when to use this tool versus alternatives like timelapse_status or timelapse_start. There is no exclusion or reference to siblings, so usage guidance is only implicit.
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?
No annotations are provided, so the description must carry the behavioral burden. It discloses the stop action and the final status return, but does not specify behavior when no job is running, whether the stop is reversible, or any side effects. This is a moderate gap for a mutation tool.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness5/5Is the description appropriately sized, front-loaded, and free of redundancy?
The description is a single front-loaded sentence that immediately states the action and result. No filler or redundant information.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness4/5Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's simplicity (no parameters, output schema present), the description covers the essential purpose and result. It could benefit from edge-case guidance, but overall it is adequate for a stop operation.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters4/5Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The tool accepts zero parameters. Schema coverage is 100% (empty object). With no parameters, the description does not need to add parameter semantics; the baseline of 4 applies.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the action (stopping) and the target (currently running timelapse job), plus the result (final status). This distinguishes it from sibling tools like timelapse_start and timelapse_status.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines3/5Does the description explain when to use this tool, when not to, or what alternatives exist?
The description implies the use case (stop a running job) but does not explicitly state when to use it or mention alternatives such as timelapse_status for checking status without stopping. No exclusions or prerequisites are given.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
- Behavior4/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the transparency burden. It discloses that the tool 'returns' status data, implying a read-only operation, and specifies the returned content. It does not mention edge cases (e.g., no active job), but for a simple status query this is sufficient.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness5/5Is the description appropriately sized, front-loaded, and free of redundancy?
The description is a single, concise sentence that immediately states the tool's purpose and key return fields. Every word adds value, with no redundancy or filler.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness4/5Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's simplicity (no parameters, a status query) and the presence of an output schema, the description provides sufficient context. It names the core data points returned (shot count, errors, save destination), making the tool's behavior clear without needing extensive elaboration.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters4/5Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The tool has zero parameters, and the schema is trivially 100% covered. Per the guidelines, this is a baseline 4 because there is nothing to document; the description correctly does not add unnecessary parameter details.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool returns the progress status of a timelapse job, specifying the details (shot count, errors, save destination). This action is distinct from sibling tools like timelapse_start/stop or timelapse_list, which manage or list jobs rather than report status.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines3/5Does the description explain when to use this tool, when not to, or what alternatives exist?
The usage context is implied: use this to check the progress of a timelapse job. However, there is no explicit statement of when to use it versus siblings, nor any exclusions or prerequisites. It lacks direct guidance on when not to use it.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
- Behavior4/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden of behavioral disclosure. It discloses that execution is background and returns immediately, and provides operational guidance such as autofocus recommendation at night and auto-exposure behavior. It does not mention side effects like job creation or permission requirements, but covers the most relevant behavioral traits.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness5/5Is the description appropriately sized, front-loaded, and free of redundancy?
The description is well-structured with a concise opening sentence followed by a clear bullet list. Each bullet explains one parameter with relevant context, and no sentence is wasted. It is appropriately sized for a 10-parameter tool.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness5/5Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's complexity (10 parameters, no annotations, output schema exists), the description is remarkably complete. It covers all parameters, default behaviors, lifecycle aspects (stop to end), and practical recommendations, leaving no significant gaps for an agent to operate correctly.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters5/5Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The schema has 0% description coverage, so the description fully compensates by explaining every parameter in detail: what values mean, examples, defaults, and recommendations (e.g., autofocus false at night, ae_target for silhouette). This is exemplary parameter documentation.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the action ('タイムラプス撮影ジョブを開始する' – start a timelapse capture job) and differentiates it from sibling tools like timelapse_stop, timelapse_status, and timelapse_list. It also highlights the background execution and immediate return, further distinguishing its behavior.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines4/5Does the description explain when to use this tool, when not to, or what alternatives exist?
The description provides clear context for when to use the tool (starting a timelapse job) and explains key behaviors like immediate return and background execution. However, it does not explicitly mention when not to use it or offer alternatives, though the sibling names make this somewhat implicit.
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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