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Parks Open

by ca.parksopen
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Server Details

Live BC Parks campsite and day-pass status with freshness and official booking links.

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Status
Healthy
Uptime
99.4% over 58 days
Last Tested
Transport
Streamable HTTP · MCP 2025-11-25
URL
ChatGPT
–
Claude
–

TDQS

A4.4/5.0

Scored across 8 tools

Disambiguation5/5

Each tool targets a distinct user intent: alerts, day passes, weather, park discovery, booking links, single-park availability trends, policy/info, and exact campsite search. The descriptions explicitly cross-reference alternatives and include 'not for' guidance, which sharply reduces misselection even where availability-related tools could overlap.

Naming Consistency4/5

All tools share the same parksopen_ prefix and snake_case style, making names predictable and readable. Most names follow verb_noun form, but park_availability_calendar and park_info are noun-phrase exceptions, so it is not perfectly uniform.

Tool Count5/5

Eight tools is well scoped for a park availability and trip-planning server. Each tool maps to a clear user need, with no obviously redundant tools or excessive surface area.

Completeness5/5

The surface covers the main lifecycle of park trip planning: discovery, exact campsite availability, single-park calendar views, alerts, weather, day passes, park/policy information, and a handoff booking link. Intentional limits like not booking directly and pausing Ontario inventory are explicit rather than hidden gaps.

Available Tools

8 tools
parksopen_check_alertsClosures, fire bans, advisories, nearby wildfiresA
Read-onlyIdempotent
Inspect

Use this when checking current closures, fire bans, advisories, or nearby wildfires for one park or system-wide. Run it before recommending a park in summer; these are 'verify before you travel' notices, never a booking or safety claim.

NameRequiredDescriptionDefault
parkNopark name; omit for a system-wide summary
systemNoreservation system id, e.g. bc_parks. Omit for the default system.
provinceNoprovince code or URL prefix (bc, on, …) — an alternative to system.

Output Schema

NameRequiredDescription

No output parameters

TDQS

A4.3/5.0
Behavior4/5

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

Annotations already establish read-only, open-world, and idempotent behavior, so the description's extra value comes from clarifying that these are 'verify before you travel' notices and 'never a booking or safety claim.' That caveat prevents the agent from overstating what the data means, which is meaningful behavioral context beyond the annotations.

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

Conciseness5/5

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

Two front-loaded sentences carry the purpose, the recommended timing, and an important interpretive caveat with zero wasted words. Every clause earns its place in the description.

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

Completeness5/5

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

Given full schema coverage, rich annotations, and an output schema, the description is complete enough for correct invocation. It states what the tool checks, when to run it, the scope options, and how to interpret the results, so nothing essential is missing.

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

Parameters3/5

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

Schema description coverage is 100%, so the parameter semantics baseline is 3. The description does add that results can be for 'one park or system-wide,' which aligns with the optional park parameter, but it does not add substantial meaning beyond what the schema already documents.

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 pairs a specific verb, 'checking,' with a concrete resource: current closures, fire bans, advisories, and nearby wildfires, scoped to either one park or system-wide. This clearly differentiates the tool from weather, booking, availability, and park-info siblings without needing to open their schemas.

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 gives explicit usage context: 'Use this when checking current closures...' and 'Run it before recommending a park in summer.' It does not explicitly name alternative tools or state when not to use it, but the timing and scope guidance is clear enough for an agent to select it confidently.

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

parksopen_check_day_passesCheck BC Parks day-pass availabilityA
Read-onlyIdempotent
Inspect

Use this when the user asks whether a BC Parks day-use pass is required, available, sold out, not released yet, or closed for a date, park, access area, or AM/PM slot. It returns the access areas currently covered by live checks across a three-day booking window, with explicit No pass needed versus Sold out states, freshness, coverage limits, the Parks Open comparison page, and the official BC Parks booking handoff. If live inventory is stale, incomplete, or conflicts with published rules, it fails closed and will not claim Available or Sold out.

NameRequiredDescriptionDefault
dateNovisit date, YYYY-MM-DD. Omit for today in British Columbia.
daysNonumber of consecutive dates to compare, 1 to 3; default is the full 3-day booking window
parksNooptional park names, e.g. ['Golden Ears', 'Garibaldi']; omit to return every tracked day-pass park

Output Schema

NameRequiredDescription
toYes
fromYes
liveYes
noteYes
pageYes
parksYes
freshnessYes
booking_urlYes
observed_atYes
suggestionsYes
coverage_throughYes

TDQS

A4.4/5.0
Behavior5/5

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

Beyond the annotations (readOnly, idempotent, openWorld), the description discloses fail-closed behavior under stale/conflicting data, freshness, coverage limits, the comparison page, and the booking handoff. This is rich behavioral context an agent could not infer from structured fields.

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?

Front-loads the usage trigger, then packs return states, coverage limits, and the fail-closed guarantee into dense sentences with little waste. Slightly long, but every clause carries signal.

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

Completeness5/5

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

An output schema exists, so return values need not be explained, yet the description still conveys the key states, freshness, coverage limits, and the fail-closed guarantee. Nothing needed to call this correctly is missing.

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

Parameters3/5

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

Schema description coverage is 100%, so the schema already documents date, days, and parks, including defaults and bounds. The description adds only the three-day booking-window framing, and mentions 'access area' and 'AM/PM slot' which are not parameters, so baseline 3 applies.

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?

States a specific verb+resource (check BC Parks day-pass availability) and enumerates the exact question states it answers (required, available, sold out, not released, closed). It is clearly distinguishable from siblings like parksopen_search_campsites or parksopen_check_alerts.

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 opening 'Use this when the user asks whether...' gives explicit trigger conditions covering date, park, access area, and AM/PM slot. It does not, however, name a sibling alternative or state when-not to use it, so it stops short of a 5.

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

parksopen_check_weatherForecast and air quality at a parkA
Read-onlyIdempotent
Inspect

Use this when the user asks about forecast conditions or air quality at a named park. It returns the Environment Canada forecast (daily high/low/conditions, about 6 days) and AQHI for the nearest station; if the park is beyond range it says so and never invents temperatures.

NameRequiredDescriptionDefault
parkYespark name
systemNoreservation system id, e.g. bc_parks. Omit for the default system.
provinceNoprovince code or URL prefix (bc, on, …) — an alternative to system.

Output Schema

NameRequiredDescription

No output parameters

TDQS

A4.4/5.0
Behavior5/5

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

Beyond the annotations (readOnlyHint, openWorldHint, idempotentHint, destructiveHint), the description discloses the data source (Environment Canada), the format (daily high/low/conditions, about 6 days), the AQHI from nearest station, and the honest behavior of saying when out of range and never inventing temperatures. This adds substantial behavioral context beyond the annotations.

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

Conciseness5/5

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

The description is a single, front-loaded sentence that packs the trigger condition, the output content, and an edge-case guarantee without waste. Every clause adds value, making it concise and well-structured.

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

Completeness4/5

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

The description covers the core purpose, data source, output scope, and a key edge case (out-of-range handling). An output schema exists to define the return structure, so the description doesn't need to repeat that. It is complete for a low-complexity tool, though it doesn't mention error handling for invalid park names, which is a minor gap.

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 coverage is 100%, so the input schema already documents all three parameters (park, system, province) with descriptions. The tool description adds no extra parameter-level detail beyond what the schema provides, so it meets the baseline of 3 but does not exceed it.

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 states a specific action (check forecast and air quality) on a specific resource (named park), and clearly distinguishes from siblings like check_alerts or park_info. The trigger condition is explicit: 'Use this when the user asks about forecast conditions or air quality at a named park.'

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 gives a clear when-to-use trigger ('when the user asks about forecast conditions or air quality at a named park'), but does not explicitly mention when not to use it or name alternative tools. It implies the scope well but lacks an explicit exclusion or alternative routing.

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

parksopen_find_open_parksFind parks with openings (ranked)A
Read-onlyIdempotent
Inspect

Use this when the user has not named a park and wants PARKS ranked by soonest opening or estimated drive time, such as 'where can I camp this weekend' or 'anything near Vancouver with space'. It uses the default tent-compatible inventory and can filter confirmed amenities. Do not use it when van, trailer, RV, or other equipment fit matters; use parksopen_search_campsites with equipment_class. For a named park use parksopen_search_campsites or parksopen_park_availability_calendar.

NameRequiredDescriptionDefault
limitNo
nightsNodefault 2 (weekend) or 1
regionNorestrict to a region name as the site shows it, e.g. 'Vancouver Island'
systemNoreservation system id, e.g. bc_parks. Omit for the default system.
weekendNothis coming weekend (Fri→Sun, 2 nights)
provinceNoprovince code or URL prefix (bc, on, …) — an alternative to system.
amenitiesNoANDed site attributes (confirmed-only; the count is a floor)
near_cityNorank by drive time from this city (Vancouver, Victoria, Nanaimo, Whistler, Kelowna, Kamloops, Cranbrook, Prince George, Fort St. John)
start_dateNoa specific arrival date; omit to find the soonest opening
horizon_daysNohow far ahead to look when no date is fixed; default 14

Output Schema

NameRequiredDescription

No output parameters

TDQS

A4.5/5.0
Behavior4/5

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

Annotations already declare readOnlyHint, openWorldHint, idempotentHint, and destructiveHint=false, so the safety profile is covered. The description adds meaningful behavioral context beyond annotations: it uses the default tent-compatible inventory, can filter confirmed amenities, and ranks results by soonest opening or drive time. This helps the agent understand result semantics without contradicting the annotations.

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

Conciseness5/5

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

Three sentences with no filler: use case and examples first, then default behavior, then clear exclusions with alternatives. Every sentence adds decision-relevant information and the most important scoping constraint is front-loaded.

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

Completeness5/5

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

The description fully covers when to use the tool, when not to use it, and which alternatives to choose. With an output schema present and detailed input schema descriptions, an agent has everything needed to select and invoke the tool correctly. No critical context is missing.

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 90%, so most parameters are already well documented in the schema. The description adds useful context like default tent-compatible inventory and confirmed amenities, but it does not explain individual parameters beyond what the schema provides. Baseline 3 is appropriate because the schema carries the parameter-documentation burden.

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 states a specific action: finding parks ranked by soonest opening or estimated drive time when no park is named. It explicitly distinguishes itself from siblings by defining its scope (unnamed park, ranked results, default tent-compatible inventory), so an agent can select it without inspecting other tools.

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

Usage Guidelines5/5

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

It gives explicit when-to-use guidance with concrete user examples, and states when not to use it: when equipment fit matters or when a specific park is named. It names the exact alternatives (parksopen_search_campsites with equipment_class, parksopen_park_availability_calendar), leaving no ambiguity.

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

parksopen_park_availability_calendarPark availability calendar (8 weeks)A
Read-onlyIdempotent
Inspect

Use this when the user asks 'when is X free', 'how busy is X', or 'which weekend should I try' for ONE named park. It returns nightly open counts for the next 8 weeks, whole-stay counts for four weekends, fill rate, and booking rules. For exact equipment fit or specific dates across many parks use parksopen_search_campsites.

NameRequiredDescriptionDefault
daysNo
parkYespark name — approximate is fine
systemNoreservation system id, e.g. bc_parks
provinceNoprovince code or prefix, e.g. bc

Output Schema

NameRequiredDescription

No output parameters

TDQS

A4.4/5.0
Behavior4/5

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

Beyond the readOnly/idempotent annotations, the description discloses result contents: nightly open counts, whole-stay counts for four weekends, fill rate, and booking rules. It is slightly loose about the 8-week window, which the configurable days parameter can extend up to 92 days, but that is a minor semantic wrinkle.

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?

Three short sentences, each earning its place: one for when to use, one for what it returns, and one for the alternative. The trigger phrases are front-loaded and there is no filler.

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

Completeness4/5

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

Given the output schema, the description does not need to enumerate return fields, and it covers scope, trigger, output highlights, and the main alternative. The only substantive gap is the days parameter, whose effect is neither described in the schema nor clearly connected to the '8 weeks' language in the description.

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

Parameters3/5

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

The schema already documents park, system, and province. The description adds usage context for park ('ONE named park') and implies a default time window ('next 8 weeks', 'four weekends'), but it never explains the days parameter or how it affects the calendar range, leaving that parameter largely undocumented.

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 states a specific action for a bounded resource: 'returns nightly open counts for the next 8 weeks' for 'ONE named park'. It also anchors the trigger phrases ('when is X free', 'how busy is X', 'which weekend should I try'), distinguishing it clearly from sibling tools, especially parksopen_search_campsites.

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

Usage Guidelines5/5

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

It explicitly opens with 'Use this when...' and gives concrete user-query examples. It then names the alternative and the condition for choosing it: 'For exact equipment fit or specific dates across many parks use parksopen_search_campsites.'

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

parksopen_park_infoPark facts, rules and fees (knowledge base)A
Read-onlyIdempotent
Inspect

Use this when the user asks about reservation policy, fees, pets, fires, facilities, or park descriptions, such as 'does X allow dogs' or 'when do reservations open'. Verified policy knowledge currently covers BC Parks only; other systems return an explicit unsupported answer with the official source. Specify system or province for general policy questions; without a park or system the scope is BC Parks. Do not use it for availability (parksopen_search_campsites) or current closures (parksopen_check_alerts).

NameRequiredDescriptionDefault
parkNopark name, when the question is about one park
systemNoreservation system id, e.g. bc_parks
provinceNoprovince code or prefix, e.g. bc
questionYeswhat you want to know (fees, pets, fires, showers, reservations policy…)

Output Schema

NameRequiredDescription

No output parameters

TDQS

A4.7/5.0
Behavior4/5

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

Annotations already declare readOnly, idempotent, openWorld, non-destructive, so the safety profile is covered. The description adds genuinely useful behavior beyond that: verified policy coverage is limited to BC Parks, other systems return an explicit unsupported answer with an official source, and the default scope falls back to BC Parks. It does not discuss answer length or formatting, but the coverage limit and fallback are the important disclosures.

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?

Three dense sentences, front-loaded with the use case, then coverage caveat, then routing exclusions. Every clause carries decision-relevant information with no filler.

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

Completeness5/5

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

An output schema exists, so return-value explanation is unnecessary. Given four optional params at full schema coverage and rich annotations, the description supplies the remaining gaps — coverage limits, default scope, and sibling routing — making it complete for correct invocation.

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?

Schema description coverage is 100%, so the baseline is 3, but the description adds selection semantics the schema lacks: specify system or province for general policy questions, and omitting park/system defaults the scope to BC Parks. That is a real rule about how the optional parameters interact, not a restatement.

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?

States a specific knowledge-base retrieval purpose with concrete topic coverage (reservation policy, fees, pets, fires, facilities) and example questions. The title and description together make it unmistakable versus the availability and alerts siblings.

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

Usage Guidelines5/5

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

Gives both when-to-use ('user asks about reservation policy, fees, pets...') and explicit exclusions routing to parksopen_search_campsites for availability and parksopen_check_alerts for closures. It even names the sibling tools for those cases, leaving nothing to inference.

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

parksopen_search_campsitesSearch campsites by live availabilityA
Read-onlyIdempotent
Inspect

Use this when exact dates or equipment fit matter, for questions like 'is X available', 'find a site for the long weekend', or 'which parks have space for a 32 ft RV'. It reads observed campsite availability for BC Parks. Ontario collection is paused; Ontario live inventory and camping alerts are unavailable. Filters the official sites cannot: exact equipment fit, electrical, waterfront, shade, pets, privacy — across every park at once. Returns only sites observed open for EVERY requested night, with an absolute Parks Open page URL to cite, a booking link into the official reservation flow (we never book for the user), and observed_at for freshness; verify availability on the official site. Not for: fees, rules, facilities (use parksopen_park_info), weather (parksopen_check_weather), closures (parksopen_check_alerts), or dates beyond the provider's booking window.

NameRequiredDescriptionDefault
parkNopark name — approximate is fine (partial, missing 'Provincial', misspelled). Omit to search every park. If it cannot be resolved you get a did-you-mean list.
limitNopage size, default 20
cursorNoopaque cursor from a previous page
systemNoreservation system id, e.g. bc_parks. Omit for every tracked system.
categoryNobooking category; default frontcountry (drive-in campsites)
end_dateYesdeparture, YYYY-MM-DD (exclusive; nights = end − start)
provinceNoprovince code or URL prefix (bc, on, …) — an alternative to system.
amenitiesNoANDed site attributes: electrical, waterfront, pets, some_shade, full_shade, double, near_restroom, walk_in, accessible, pull_through, private, big_rig
start_dateYesarrival, YYYY-MM-DD
min_privacyNo'Good' or 'Excellent'
equipment_classNocanonical class (tent, tent2, tent3, van, trailer_18, rv_32, rv_32_plus) or free text like '30ft trailer'. Default tent.

Output Schema

NameRequiredDescription
noteYes
totalYes
nightsYes
closureYes
resultsYes
next_cursorYes
observed_atYes
suggestionsYes
resolved_parkYes
equipment_classYes

TDQS

A4.2/5.0
Behavior3/5

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

Annotations already declare readOnly/idempotent/non-destructive, so the safety profile is covered. The description adds genuinely useful behavior beyond that: Ontario collection is paused, results are only sites observed open for EVERY requested night, it never books, and availability should be verified officially. However, pagination/limits behavior is left entirely to the schema, so it's not maximally rich for an 11-param 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.

Conciseness4/5

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

Front-loaded with the usage trigger, then coverage caveats, then return shape and exclusions — a logical order with little waste. It is dense and long-winded in places (em-dash chains, the amenities aside), which keeps it just short of a 5.

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

Completeness5/5

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

For a complex, open-world search with an output schema present, the description covers the decision-critical facts: coverage limits (Ontario paused), result semantics (open every night), the no-booking guarantee, freshness via observed_at, and routing to siblings. Nothing an agent needs to call it correctly is missing.

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

Parameters3/5

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

Schema description coverage is 100%, so every parameter including equipment_class, amenities, and date exclusivity is already documented; baseline 3 applies. The description reinforces which params matter ('exact dates or equipment fit', '32 ft RV') but adds no syntax or format detail beyond 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?

States a specific verb+resource ('reads observed campsite availability for BC Parks') and immediately differentiates itself from siblings by listing what it filters that 'the official sites cannot'. An agent can separate it from park_info, check_alerts, check_weather, and park_availability_calendar without opening any schema.

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

Usage Guidelines5/5

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

Opens with an explicit when-to-use trigger with concrete example questions ('is X available', 'long weekend', '32 ft RV'), then gives an explicit 'Not for:' list naming each alternative sibling for fees/rules/weather/closures. Exclusions and alternatives are both spelled out.

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

Tool Schema Changelog

Recent tool additions, removals, and schema changes observed during successful MCP inspections.

  1. 1 tool update
    • Changedparksopen_find_open_parks1 field changed
      • changedInput schema / properties / near_city / description
        Previous value: -"rank by drive time from this city (Vancouver, Victoria, Nanaimo, Whistler, Kelowna, Kamloops, Cranbrook, Prince George, Fort St. John, Toronto, Ottawa)"New value: +"rank by drive time from this city (Vancouver, Victoria, Nanaimo, Whistler, Kelowna, Kamloops, Cranbrook, Prince George, Fort St. John)"
  2. 2 tool updates
    • Changedparksopen_find_open_parks1 field changed
      • changedInput schema / properties / near_city / description
        Previous value: -"rank by drive time from this city (Vancouver, Victoria, Nanaimo, Whistler, Kelowna, Kamloops, Cranbrook, Prince George, Fort St. John)"New value: +"rank by drive time from this city (Vancouver, Victoria, Nanaimo, Whistler, Kelowna, Kamloops, Cranbrook, Prince George, Fort St. John, Toronto, Ottawa)"
    • Changedparksopen_park_info6 fields changed
      • addedInput schema / properties / province
        Added value: +{
+  "description": "province code or prefix, e.g. bc",
+  "type": "string"
+}
      • addedInput schema / properties / system
        Added value: +{
+  "description": "reservation system id, e.g. bc_parks",
+  "type": "string"
+}
      • removedOutput schema / additionalProperties
        Removed value: -false
      • addedOutput schema / anyOf
        Added value: +[
+  {
+    "additionalProperties": false,
+    "properties": {
+      "context": {
+        "type": "string"
+      },
+      "note": {
+        "type": "string"
+      },
+      "park": {
+        "anyOf": [
+          {
+            "additionalProperties": false,
+            "properties": {
+              "name": {
+                "type": "string"
+              },
+              "slug": {
+                "type": "string"
+              }
+            },
+            "required": [
+              "slug",
+              "name"
+            ],
+            "type": "object"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "sources": {
+        "items": {
+          "type": "string"
+        },
+        "type": "array"
+      }
+    },
+    "required": [
+      "park",
+      "context",
+      "sources",
+      "note"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "error": {
+        "type": "string"
+      },
+      "suggestions": {
+        "items": {
+          "type": "string"
+        },
+        "type": "array"
+      }
+    },
+    "required": [
+      "error"
+    ],
+    "type": "object"
+  }
+]
      • removedOutput schema / properties
        Removed value: -{
-  "context": {
-    "type": "string"
-  },
-  "note": {
-    "type": "string"
-  },
-  "park": {
-    "anyOf": [
-      {
-        "additionalProperties": false,
-        "properties": {
-          "name": {
-            "type": "string"
-          },
-          "slug": {
-            "type": "string"
-          }
-        },
-        "required": [
-          "slug",
-          "name"
-        ],
-        "type": "object"
-      },
-      {
-        "type": "null"
-      }
-    ]
-  },
-  "sources": {
-    "items": {
-      "type": "string"
-    },
-    "type": "array"
-  }
-}
      • removedOutput schema / required
        Removed value: -[
-  "park",
-  "context",
-  "sources",
-  "note"
-]
  3. 1 tool update
    • Changedparksopen_check_day_passes1 field changed
      • changedOutput schema / properties / freshness / enum
        Previous value: -[
-  "ok",
-  "no-database",
-  "no-data",
-  "incomplete",
-  "conflict",
-  "stale",
-  "error"
-]New value: +[
+  "ok",
+  "no-database",
+  "no-data",
+  "incomplete",
+  "conflict",
+  "stale",
+  "unknown",
+  "error"
+]
  4. 8 tool updates
    • Changedparksopen_check_alerts1 field changed
      • changedOutput schema / (root)
        Previous value: -nullNew value: +{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "anyOf": [
+    {
+      "additionalProperties": false,
+      "properties": {
+        "alert": {
+          "anyOf": [
+            {
+              "additionalProperties": false,
+              "properties": {
+                "access_status": {
+                  "type": "string"
+                },
+                "closed_to_visitors": {
+                  "type": "boolean"
+                },
+                "detail": {
+                  "type": "string"
+                },
+                "from": {
+                  "type": [
+                    "string",
+                    "null"
+                  ]
+                },
+                "severity": {
+                  "type": "string"
+                },
+                "title": {
+                  "type": "string"
+                },
+                "type": {
+                  "type": "string"
+                },
+                "until": {
+                  "type": [
+                    "string",
+                    "null"
+                  ]
+                },
+                "url": {
+                  "type": "string"
+                }
+              },
+              "required": [
+                "type",
+                "severity",
+                "title"
+              ],
+              "type": "object"
+            },
+            {
+              "type": "null"
+            }
+          ]
+        },
+        "park": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "source": {
+          "type": "string"
+        },
+        "summary": {
+          "additionalProperties": false,
+          "properties": {
+            "examples": {
+              "items": {
+                "type": "string"
+              },
+              "type": "array"
+            },
+            "fireBansOrClosures": {
+              "type": "number"
+            },
+            "parksNearWildfire": {
+              "type": "number"
+            },
+            "total": {
+              "type": "number"
+            }
+          },
+          "required": [
+            "total",
+            "fireBansOrClosures",
+            "parksNearWildfire",
+            "examples"
+          ],
+          "type": "object"
+        }
+      },
+      "required": [
+        "park",
+        "alert",
+        "source"
+      ],
+      "type": "object"
+    },
+    {
+      "additionalProperties": false,
+      "properties": {
+        "error": {
+          "type": "string"
+        },
+        "suggestions": {
+          "items": {
+            "type": "string"
+          },
+          "type": "array"
+        }
+      },
+      "required": [
+        "error"
+      ],
+      "type": "object"
+    }
+  ],
+  "type": "object"
+}
    • Addedparksopen_check_day_passes
    • Changedparksopen_check_weather1 field changed
      • changedOutput schema / (root)
        Previous value: -nullNew value: +{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "anyOf": [
+    {
+      "additionalProperties": false,
+      "properties": {
+        "park": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "weather": {
+          "anyOf": [
+            {
+              "additionalProperties": false,
+              "properties": {
+                "aqhi": {
+                  "type": [
+                    "number",
+                    "null"
+                  ]
+                },
+                "city": {
+                  "type": "string"
+                },
+                "currentTemp": {
+                  "type": [
+                    "number",
+                    "null"
+                  ]
+                },
+                "days": {
+                  "items": {
+                    "additionalProperties": false,
+                    "properties": {
+                      "condition": {
+                        "type": "string"
+                      },
+                      "date": {
+                        "type": "string"
+                      },
+                      "high": {
+                        "type": [
+                          "number",
+                          "null"
+                        ]
+                      },
+                      "icon": {
+                        "type": "string"
+                      },
+                      "label": {
+                        "type": "string"
+                      },
+                      "low": {
+                        "type": [
+                          "number",
+                          "null"
+                        ]
+                      },
+                      "pop": {
+                        "type": [
+                          "number",
+                          "null"
+                        ]
+                      }
+                    },
+                    "required": [
+                      "date",
+                      "label",
+                      "high",
+                      "low",
+                      "icon",
+                      "condition",
+                      "pop"
+                    ],
+                    "type": "object"
+                  },
+                  "type": "array"
+                },
+                "updated": {
+                  "type": [
+                    "string",
+                    "null"
+                  ]
+                }
+              },
+              "required": [
+                "city",
+                "updated",
+                "currentTemp",
+                "days",
+                "aqhi"
+              ],
+              "type": "object"
+            },
+            {
+              "type": "null"
+            }
+          ]
+        }
+      },
+      "required": [
+        "park",
+        "weather"
+      ],
+      "type": "object"
+    },
+    {
+      "additionalProperties": false,
+      "properties": {
+        "error": {
+          "type": "string"
+        },
+        "suggestions": {
+          "items": {
+            "type": "string"
+          },
+          "type": "array"
+        }
+      },
+      "required": [
+        "error"
+      ],
+      "type": "object"
+    }
+  ],
+  "type": "object"
+}
    • Changedparksopen_find_open_parks1 field changed
      • changedOutput schema / (root)
        Previous value: -nullNew value: +{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "anyOf": [
+    {
+      "additionalProperties": false,
+      "properties": {
+        "amenities_applied": {
+          "items": {
+            "type": "string"
+          },
+          "type": "array"
+        },
+        "horizon_days": {
+          "type": "number"
+        },
+        "nights": {
+          "type": "number"
+        },
+        "note": {
+          "type": "string"
+        },
+        "observed_at": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "parks": {
+          "items": {
+            "additionalProperties": false,
+            "properties": {
+              "drive_min": {
+                "type": [
+                  "number",
+                  "null"
+                ]
+              },
+              "earliest_date": {
+                "type": "string"
+              },
+              "earliest_offset_days": {
+                "type": "number"
+              },
+              "ferry": {
+                "type": "boolean"
+              },
+              "page": {
+                "type": "string"
+              },
+              "park": {
+                "type": "string"
+              },
+              "region": {
+                "type": [
+                  "string",
+                  "null"
+                ]
+              },
+              "sites_open": {
+                "type": "number"
+              }
+            },
+            "required": [
+              "park",
+              "page",
+              "region",
+              "earliest_date",
+              "earliest_offset_days",
+              "sites_open",
+              "drive_min",
+              "ferry"
+            ],
+            "type": "object"
+          },
+          "type": "array"
+        },
+        "total_with_openings": {
+          "type": "number"
+        },
+        "window": {
+          "type": [
+            "string",
+            "null"
+          ]
+        }
+      },
+      "required": [
+        "nights",
+        "horizon_days",
+        "window",
+        "amenities_applied",
+        "parks",
+        "total_with_openings",
+        "observed_at",
+        "note"
+      ],
+      "type": "object"
+    },
+    {
+      "additionalProperties": false,
+      "properties": {
+        "error": {
+          "type": "string"
+        },
+        "suggestions": {
+          "items": {
+            "type": "string"
+          },
+          "type": "array"
+        }
+      },
+      "required": [
+        "error"
+      ],
+      "type": "object"
+    }
+  ],
+  "type": "object"
+}
    • Changedparksopen_get_booking_link1 field changed
      • changedOutput schema / (root)
        Previous value: -nullNew value: +{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "anyOf": [
+    {
+      "additionalProperties": false,
+      "properties": {
+        "booking_url": {
+          "type": "string"
+        },
+        "equipment_class": {
+          "type": "string"
+        },
+        "page": {
+          "type": "string"
+        },
+        "park": {
+          "type": "string"
+        },
+        "park_key": {
+          "type": "string"
+        },
+        "system": {
+          "type": "string"
+        }
+      },
+      "required": [
+        "system",
+        "park",
+        "park_key",
+        "equipment_class",
+        "booking_url",
+        "page"
+      ],
+      "type": "object"
+    },
+    {
+      "additionalProperties": false,
+      "properties": {
+        "error": {
+          "type": "string"
+        },
+        "suggestions": {
+          "items": {
+            "type": "string"
+          },
+          "type": "array"
+        }
+      },
+      "required": [
+        "error"
+      ],
+      "type": "object"
+    }
+  ],
+  "type": "object"
+}
    • Changedparksopen_park_availability_calendar1 field changed
      • changedOutput schema / (root)
        Previous value: -nullNew value: +{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "anyOf": [
+    {
+      "additionalProperties": false,
+      "properties": {
+        "fill_rate_pct": {
+          "type": [
+            "number",
+            "null"
+          ]
+        },
+        "nights": {
+          "items": {
+            "additionalProperties": false,
+            "properties": {
+              "date": {
+                "type": [
+                  "string",
+                  "null"
+                ]
+              },
+              "open_sites": {
+                "type": "number"
+              }
+            },
+            "required": [
+              "date",
+              "open_sites"
+            ],
+            "type": "object"
+          },
+          "type": "array"
+        },
+        "note": {
+          "type": "string"
+        },
+        "observed_at": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "page": {
+          "type": "string"
+        },
+        "park": {
+          "type": "string"
+        },
+        "park_key": {
+          "type": "string"
+        },
+        "reservable_sites": {
+          "type": "number"
+        },
+        "rules": {
+          "additionalProperties": false,
+          "properties": {
+            "max_nights": {
+              "type": [
+                "number",
+                "null"
+              ]
+            },
+            "min_lead_days": {
+              "type": "number"
+            },
+            "window": {
+              "type": "string"
+            }
+          },
+          "required": [
+            "window",
+            "min_lead_days",
+            "max_nights"
+          ],
+          "type": "object"
+        },
+        "system": {
+          "type": "string"
+        },
+        "weekends": {
+          "items": {
+            "additionalProperties": false,
+            "properties": {
+              "end": {
+                "type": "string"
+              },
+              "label": {
+                "type": "string"
+              },
+              "open_for_whole_stay": {
+                "type": "number"
+              },
+              "start": {
+                "type": "string"
+              }
+            },
+            "required": [
+              "start",
+              "end",
+              "label",
+              "open_for_whole_stay"
+            ],
+            "type": "object"
+          },
+          "type": "array"
+        }
+      },
+      "required": [
+        "system",
+        "park",
+        "park_key",
+        "page",
+        "reservable_sites",
+        "fill_rate_pct",
+        "nights",
+        "weekends",
+        "rules",
+        "observed_at",
+        "note"
+      ],
+      "type": "object"
+    },
+    {
+      "additionalProperties": false,
+      "properties": {
+        "error": {
+          "type": "string"
+        },
+        "suggestions": {
+          "items": {
+            "type": "string"
+          },
+          "type": "array"
+        }
+      },
+      "required": [
+        "error"
+      ],
+      "type": "object"
+    }
+  ],
+  "type": "object"
+}
    • Changedparksopen_park_info1 field changed
      • changedOutput schema / (root)
        Previous value: -nullNew value: +{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "additionalProperties": false,
+  "properties": {
+    "context": {
+      "type": "string"
+    },
+    "note": {
+      "type": "string"
+    },
+    "park": {
+      "anyOf": [
+        {
+          "additionalProperties": false,
+          "properties": {
+            "name": {
+              "type": "string"
+            },
+            "slug": {
+              "type": "string"
+            }
+          },
+          "required": [
+            "slug",
+            "name"
+          ],
+          "type": "object"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "sources": {
+      "items": {
+        "type": "string"
+      },
+      "type": "array"
+    }
+  },
+  "required": [
+    "park",
+    "context",
+    "sources",
+    "note"
+  ],
+  "type": "object"
+}
    • Changedparksopen_search_campsites1 field changed
      • changedOutput schema / (root)
        Previous value: -nullNew value: +{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "additionalProperties": false,
+  "properties": {
+    "closure": {
+      "anyOf": [
+        {
+          "additionalProperties": false,
+          "properties": {
+            "park": {
+              "type": "string"
+            },
+            "source": {
+              "type": "string"
+            },
+            "title": {
+              "type": "string"
+            },
+            "until": {
+              "type": [
+                "string",
+                "null"
+              ]
+            }
+          },
+          "required": [
+            "park",
+            "title",
+            "until",
+            "source"
+          ],
+          "type": "object"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "equipment_class": {
+      "type": "string"
+    },
+    "next_cursor": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "nights": {
+      "type": "number"
+    },
+    "note": {
+      "type": "string"
+    },
+    "observed_at": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "resolved_park": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "results": {
+      "items": {
+        "additionalProperties": false,
+        "properties": {
+          "attributes": {
+            "additionalProperties": false,
+            "properties": {
+              "adjacent": {
+                "type": [
+                  "string",
+                  "null"
+                ]
+              },
+              "electrical": {
+                "type": [
+                  "string",
+                  "null"
+                ]
+              },
+              "privacy": {
+                "type": [
+                  "string",
+                  "null"
+                ]
+              },
+              "shade": {
+                "type": [
+                  "string",
+                  "null"
+                ]
+              }
+            },
+            "required": [
+              "privacy",
+              "shade",
+              "electrical",
+              "adjacent"
+            ],
+            "type": "object"
+          },
+          "booking_url": {
+            "type": "string"
+          },
+          "fit": {
+            "type": "string"
+          },
+          "loop": {
+            "type": "number"
+          },
+          "nights": {
+            "type": "number"
+          },
+          "page": {
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "park": {
+            "type": "string"
+          },
+          "park_key": {
+            "type": "string"
+          },
+          "site_id": {
+            "type": "number"
+          },
+          "slug": {
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "system": {
+            "type": "string"
+          }
+        },
+        "required": [
+          "system",
+          "park",
+          "park_key",
+          "slug",
+          "page",
+          "site_id",
+          "loop",
+          "nights",
+          "fit",
+          "attributes",
+          "booking_url"
+        ],
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "suggestions": {
+      "items": {
+        "type": "string"
+      },
+      "type": "array"
+    },
+    "total": {
+      "type": "number"
+    }
+  },
+  "required": [
+    "results",
+    "total",
+    "next_cursor",
+    "nights",
+    "equipment_class",
+    "resolved_park",
+    "suggestions",
+    "observed_at",
+    "closure",
+    "note"
+  ],
+  "type": "object"
+}

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