glim.sh

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

Annotations already declare readOnlyHint, idempotentHint, and no destructiveness. Description adds context about marketplace detection from URL host, return fields, and format options. However, it doesn't mention potential rate limits or the fact that fetching may also respect request headers like user-agent, which is a minor gap. Overall, it provides moderate additional transparency.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

Description is a single paragraph but well-organized: first sentence states core purpose, second details return info, third explains format options. No fluff, every sentence adds value. Appropriate length for the tool's complexity.

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

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

Given two parameters, full annotations, and no output schema, the description covers everything an agent needs: input constraints, output summary, format options, and marketplace handling. It is self-contained and leaves no obvious gaps.

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

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

Schema coverage is 100% with descriptions. The description adds crucial detail: 'ref' must be a full URL (not ASIN) and carries marketplace info; 'format' defaults to 'text' and 'json' gives full structured data. This enriches the schema without redundancy.

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

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

The description clearly states it fetches Amazon product details from a full product URL, distinguishing it from sibling tools like glim_amazon_search which is for searching. It specifies the verb 'Fetch' and resource 'Amazon product detail', making the purpose unambiguous.

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

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

Explicitly states when to use: pass a full URL from 'glim_amazon_search' or any '/dp/<ASIN>' page. It also provides exclusions: bare ASIN is rejected because it's ambiguous across marketplaces. This gives clear guidance on proper usage.

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

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

Annotations already indicate readOnlyHint=true, openWorldHint=true, idempotentHint=true, destructiveHint=false. Description adds that sort_by 'most_reviewed' re-ranks client-side, explains default dropping of sponsored/suggested, and mentions error handling for invalid slugs. No contradiction with annotations.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

Description is moderately long but front-loaded with the critical rule of mutual exclusivity. Every sentence adds value; no tautology. Minor redundancy in listing TLDs which are already in tld enum, but acceptable for clarity.

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

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

Covers all important aspects: search scope, output fields, pricing details, sort options, filtering via min_reviews, format choices, drill-down direction, error handling. Despite 9 parameters and no output schema, the description is comprehensive enough for an agent to invoke correctly.

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

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

Schema coverage is 100%, baseline 3. Description adds significant meaning: mutual exclusivity of query and category_slug, client-side re-ranking behavior for most_reviewed, pairing min_reviews with sort_by, and error handling for invalid slugs. Goes well beyond schema.

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

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

Clearly states it searches Amazon across multiple TLDs, returns ranked hits with specific fields (price, ratings, ASINs). Differentiates from sibling glim_amazon_get by noting drill-down capability. Verb+resource is specific.

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

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

Explicitly states 'Pass exactly ONE of {query} or {category_slug}.' Guides on using sort_by='most_reviewed' with min_reviews for trust-weighted re-rank. References glim_amazon_get for drill-down. Clear when-to-use and alternatives.

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

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

Annotations already declare readOnlyHint=true, destructiveHint=false, idempotentHint=true, and openWorldHint=true. The description adds rich behavioral context: it details what each ref type returns (e.g., paths, PR with comments, file content), and notes that format 'text' returns compact human-readable output while 'json' returns machine-readable. No contradictions with annotations.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single run-on sentence with many clauses separated by semicolons. It is information-dense but lacks clear structure (e.g., bullet points or sections). This makes it harder to parse quickly, though all necessary information is present.

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

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

Given the tool's complexity (many ref patterns) and lack of an output schema, the description covers all major use cases (repo metadata, PRs, issues, files, trees, commits, etc.). It does not mention rate limits or authentication, but annotations do not require it. Overall, it provides sufficient context for the agent to understand what the tool can fetch.

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

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

All parameters have descriptions in the schema (100% coverage). The description repeats the ref parameter's purpose verbatim, adding no new semantic value. The other parameters (page, format, per_page) are already well-documented in the schema. The description does mention format details but does not surpass the schema's explanation.

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

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

The description explicitly states the tool's purpose: 'Fetch GitHub data from a single ref.' It lists specific URL patterns (e.g., /pull/N, /issues/N) and distinguishes from sibling tools like glim_github_search and glim_web_fetch, leaving no ambiguity about what resource it acts on.

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

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

The description provides clear usage patterns (URL types and what they return) but does not explicitly say when to avoid this tool or prefer a sibling. The sibling tool names hint at alternatives (e.g., glim_github_search for search), but no direct 'use this for X, not Y' guidance is given.

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

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

Annotations already indicate readOnlyHint, openWorldHint, idempotentHint, destructiveHint false. The description adds substantial behavioral context: kind inference, the effect of setting repo with kind=repos (routes to conversations), the impact of sort on relevance ranking, and unsupported qualifiers in code search. No contradictions with annotations.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is relatively long but every sentence adds necessary detail. Key points are front-loaded (the main purpose and search kinds). Minor redundancy (some qualifier lists repeated) could be trimmed slightly, but overall it is efficient for the complexity.

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

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

Given the tool has 6 parameters (1 required), no output schema, and complex search syntax, the description fully covers query construction per kind, kind inference, repo scoping, pagination limits, output format, and crucial caveats (sort ranking behavior, unsupported code search features). No gaps remain for an agent to safely and effectively invoke this tool.

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

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

Schema coverage is 100%, but the description adds significant value beyond the schema. For query, it details GitHub search syntax per kind. For kind, it explains inference rules. For repo, it describes accepted formats (owner/name, URL, partial owner/) and its interaction with the search kind. For format, it clarifies 'text' vs 'json' output differences. These enrich the parameter understanding substantially.

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

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

The description clearly states the tool searches GitHub repositories, conversations (issues+PRs), or code, using full GitHub search syntax. It distinguishes from sibling tools (e.g., glim_web_search) by specifically targeting GitHub, and the three search kinds are explicitly enumerated and differentiated.

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

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

The description provides extensive when-to-use guidance: for each kind (repos, code, conversations) it explains query formation, filters, and limitations. It explicitly warns against using sort for best relevance, and suggests glim_github_get for full content when kind='conversations'. It also explains kind inference rules when the parameter is omitted, and the repo parameter behavior with different kinds.

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

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

Annotations already mark read-only, non-destructive. Description adds context: posts return comments, subreddits/users return metadata and recent activity, and mentions output format impact on tokens. No contradiction with annotations.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

Single sentence, front-loaded with purpose. Efficient but could incorporate a bit more guidance (e.g., pagination mention) without bloating. Still very concise.

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

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

Given 11 parameters and no output schema, the description covers core returns per entity type. Lacks mention of pagination cursor behavior, but schema covers it. Adequate for a get tool.

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

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

Schema coverage is 100%, with each parameter described. The description does not add meaning beyond the schema; it summarizes high-level behavior. Baseline of 3 is appropriate.

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

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

Clearly states the verb 'Fetch' and the resources: Reddit post, subreddit, or user by ref. Distinguishes from sibling 'glim_reddit_search' by focusing on direct ref retrieval rather than searching.

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

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

Implies usage for fetching specific refs, but no explicit guidance on when to use this versus alternatives like 'glim_reddit_search' or 'glim_web_fetch'. Lacks when-not-to-use or alternative recommendations.

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

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

Discloses that responses are compact human-readable text by default with json option, that each result includes top comments, and that pagination uses next_cursor. No contradiction with annotations (readOnly, openWorld, idempotent, non-destructive).

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

Four sentences front-loaded with purpose, then key features, sibling reference, pagination, and docs link. No wasted words.

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

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

Given 8 parameters, pagination, multiple formats, and sibling tool, the description covers purpose, usage, output format, pagination mechanism, and date range. No output schema but return values are adequately described.

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

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

Schema covers all 8 parameters with descriptions (100% coverage). The description adds value by explaining the rich result structure (full content + top comments) and that format='text' saves tokens, going beyond schema details.

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

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

Clearly states 'Search Reddit posts' and explains that results include full content and top comments, distinguishing it from sibling glim_reddit_get for a single post's comment tree.

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

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

Explicitly suggests when to use glim_reddit_get instead, advises on sort orders (keep 'relevance' for queries, use 'top'/'hot' for browsing), and explains pagination with cursor.

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

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

Annotations already indicate readOnly, idempotent, and non-destructive behavior. The description adds rich behavioral context: default output is compact human-readable, format='json' for structured data, expand_urls warning about size, pagination via cursor, and inclusion filters for replies/quotes. No contradictions with annotations.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

Three sentences, front-loaded with core purpose, followed by specific usage instructions and format options. No wasted words; every sentence contributes essential information.

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

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

Covers main functionality, input types, output formats, and a key caveat (expand_urls size impact). However, it does not describe the structure of the compact view or the shape of returned data, which would be helpful given the lack of an output schema.

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

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

Schema description coverage is 100%, so baseline is 3. The description adds value by explaining the two types of 'ref' and what they return, and why expand_urls is off by default. However, most parameter details are already adequately covered in the schema.

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

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

The description clearly states it fetches a tweet or user from a reference, distinguishing between tweet URLs (returning tweet with thread context) and profile URLs (returning user with recent tweets). This specificity and differentiation from sibling tools like glim_twitter_search makes purpose unambiguous.

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

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

Provides clear guidance on using full URLs over numeric ids and how to handle ids as quoted strings. However, it does not explicitly exclude usage patterns like searching or compare directly with siblings, leaving some implicit context.

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

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

Annotations already indicate read-only, idempotent behavior. The description adds that the default output is a compact human-readable list and that JSON format is available. It also links to related tools and docs, providing useful behavioral context beyond annotations.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

Three short sentences, each serving a distinct purpose: state function, explain output format and alternatives, and point to documentation. No wasted words.

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

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

With 7 parameters all documented in schema, no output schema, and strong annotations, the description covers key usage aspects: output format choice, related tool linkage, and documentation reference. It could mention pagination slightly, but the cursor parameter is in schema.

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

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

Schema coverage is 100%, so the description doesn't need to add much. It adds context about default format and the ability to use operators, but doesn't explain parameter syntax beyond what the schema already provides. Baseline 3 with minor increment for the format hint.

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

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

The description clearly states it searches Twitter/X and differentiates from sibling glim_twitter_get by noting that tool is for full thread context. The verb 'Search' and resource 'Twitter/X' are specific, and it also mentions using documented operators.

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

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

Explicitly suggests using glim_twitter_get for full thread context and references docs for operators, providing clear alternatives. It doesn't explicitly state when not to use this tool, but the context is implied.

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

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

The description discloses extensive behavioral traits beyond annotations: auto-tier server-side handling (SSR, SPA, PDFs, paywall detection, residential-proxy escalation, stealth profiles for certain sites), outcome classification values, truncation behavior with download_full_url, and unsupported targets. All align with readOnly/idempotent annotations; no contradictions.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is front-loaded with the core purpose and then provides detailed behavioral information in a structured manner. It is slightly long but every sentence adds value, covering important nuances without extraneous content. Concise for the amount of information conveyed.

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

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

Given the complexity of web fetching (varied site handling, paywall detection, outcome classification), the description covers essential aspects: return format, outcome values, truncation, unsupported targets. It does not detail response size limits or rate limiting, but these are implied by the truncation mention. Sufficiently complete for agent decision-making.

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

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

Schema coverage is 100% (all three parameters described). The description adds significant value beyond schema by explaining the effect of the 'format' parameter (e.g., 'json' returns structured SSR blob for TikTok/Pinterest/YouTube), the presence of YAML frontmatter in output, and the truncation mechanism. Baseline 3 plus extra value justifies a 4.

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

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

The description clearly states the tool fetches a single web page and extracts clean content, with specific verb+resource. It distinguishes from siblings (platform-specific get/search tools and web search) by being a general fetch tool. The extensive details on supported sites and auto-tier processing further clarify its purpose.

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

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

The description lists unsupported targets (e.g., Bluesky search, Instagram post/reel) but does not explicitly state when to use this tool versus sibling tools like glim_web_search or platform-specific get tools. Usage is implied for any URL not covered by specialized tools; no positive 'when to use' guidance is given.

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

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

Annotations already indicate readOnly, openWorld, idempotent, and non-destructive behavior. The description adds useful context on default compact text output and the option for full JSON data, and clarifies that return includes only top excerpt per result by default.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

Two terse sentences plus a cross-reference to sibling tool. Every word adds value, no redundancy. Front-loaded with the core action and return type.

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

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

Given no output schema, the description adequately explains what results contain (titles, URLs, excerpts) and format options. Missing details like result count or pagination, but acceptable for a search tool.

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

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

Schema coverage is 100% with descriptions. The description adds value by explaining the practical difference between text and JSON formats beyond the schema's enum definition, and gives usage context for exclude_domains (noisy aggregators).

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

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

The description clearly states the tool's purpose: semantic web search returning titles, URLs, and excerpts. It distinguishes from sibling tools like glim_web_fetch for full page content and mentions format options for structured data.

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

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

Explicitly suggests using glim_web_fetch for full page content, which guides when not to use this tool. Does not elaborate on when to prefer this over other domain-specific search siblings, but the sibling names imply that this is for general web searches.

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

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

The description goes far beyond annotations: it details server-side cleaning, deduplication, tagging stripping, timestamp format, size reduction (~1/10th), inline vs download_url behavior for long videos, fallback from uploader_provided to auto_generated (with API call counting), and 7-day caching. No contradiction with annotations (readOnlyHint, idempotentHint, etc.).

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is concise (three sentences) and front-loaded with the primary purpose. Each sentence contributes unique information: fetching and cleaning, format behavior, origin fallback and caching. No redundant or extraneous content.

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

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

Despite having no output schema, the description fully explains the two possible return types (inline text or download_url note for 'text'; structured metadata + download_url for 'json'). It also covers caching and API call counting. All behavioral aspects a developer would need to invoke and interpret the tool are covered.

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

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

Schema has 100% description coverage, so baseline is 3. The description adds value by explaining the behavioral implications of the 'format' parameter (inline limit, download_url note) and the fallback behavior for 'origin', which are not in the schema descriptions. This enriches understanding beyond the schema fields.

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

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

The description clearly states it fetches a YouTube video transcript from a URL or ID. It distinguishes from sibling tools which target other platforms (Amazon, GitHub, etc.), leaving no ambiguity about what resource this tool accesses.

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

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

The description explains when to use the tool (to get video transcripts) and contrasts the two formats (text vs json) with clear use cases. It does not explicitly state when not to use it, but the sibling context makes exclusion obvious. A slight gap is not listing non-YouTube sources as out of scope.

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