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Glama

UK Property Intelligence

Server Details

UK property data MCP server. Wraps Land Registry, Rightmove, EPC, rental yields, stamp duty, and Companies House into 13 tools.

Status
Healthy
Last Tested
Transport
Streamable HTTP
URL

Glama MCP Gateway

Connect through Glama MCP Gateway for full control over tool access and complete visibility into every call.

MCP client
Glama
MCP server

Full call logging

Every tool call is logged with complete inputs and outputs, so you can debug issues and audit what your agents are doing.

Tool access control

Enable or disable individual tools per connector, so you decide what your agents can and cannot do.

Managed credentials

Glama handles OAuth flows, token storage, and automatic rotation, so credentials never expire on your clients.

Usage analytics

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

100% free. Your data is private.
Tool DescriptionsA

Average 4/5 across 13 of 13 tools scored. Lowest: 3.3/5.

Server CoherenceA
Disambiguation4/5

Most tools have distinct purposes, though property_yield and rental_analysis both touch on yield calculation, which could cause minor confusion. Otherwise, each tool is clearly scoped.

Naming Consistency5/5

All tool names follow a consistent snake_case pattern, typically object_action (e.g., company_profile, property_blocks, rightmove_search), making them predictable and easy to understand.

Tool Count5/5

With 13 tools covering company data, planning, transactions, EPC, rentals, listings, and stamp duty, the count is well-suited to the domain without being overwhelming or incomplete.

Completeness4/5

The toolset covers core property intelligence areas comprehensively, though a direct planning application data tool is missing (only URL provided) and no demographics or school data are included, which are minor gaps.

Available Tools

13 tools
company_profileAInspect

Get the full Companies House record for a company by number.

Returns registered address, status, incorporation date, officers, and filing history. Use company_search to find a company number by name.

ParametersJSON Schema
NameRequiredDescriptionDefault
company_numberYesCompanies House number (e.g. '00445790').

Output Schema

ParametersJSON Schema
NameRequiredDescription

No output parameters

Behavior4/5

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

No annotations are provided, so the description must fully convey behavioral traits. It describes the tool as retrieving a full record, implying a read-only operation with no destructive side effects. It could be more explicit about safety (e.g., 'This is a read-only operation'), but the verb 'Get' and the listing of returned data sufficiently indicate transparency.

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

Conciseness5/5

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

The description consists of two short sentences with no wasted words. It front-loads the core purpose and immediately provides useful output details. Every sentence adds value.

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 simple tool with a single parameter and an existing output schema, the description is fully complete. It tells the user what to expect (full record with specific fields) and how to obtain the needed input (company_search). No gaps remain.

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 input schema covers 100% of parameters with a description for company_number. The tool description does not add any additional meaning beyond what the schema already provides. Per the scoring guide, when schema coverage is high, a baseline of 3 is appropriate without extra param info.

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

Purpose5/5

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

The description clearly states 'Get the full Companies House record for a company by number.' It specifies the resource (company by number) and lists the types of data returned (address, status, incorporation date, officers, filing history). It also distinguishes from the sibling tool company_search by explaining when to use that instead.

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

Usage Guidelines5/5

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

The description explicitly says when to use this tool (when you have a company number) and directs the user to use company_search to find the number by name. This provides clear contextual guidance and prevents misuse.

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

ppd_transactionsAInspect

Search Land Registry transactions by postcode, address, date range, or price.

Use for specific property history ("what has 10 Downing Street sold for?") or filtered market queries ("all sales over 500k in SW1 last year").

ParametersJSON Schema
NameRequiredDescriptionDefault
paonNoPrimary address (house name/number) for address-based search
townNoTown name for address-based search
limitNoMax results to return (default 25)
streetNoStreet name for address-based search
to_dateNoEnd date filter (ISO format)
postcodeNoUK postcode (e.g. "SW1A 1AA") - required for postcode search
from_dateNoStart date filter (ISO format, e.g. "2023-01-01")
max_priceNoMaximum price filter in £
min_priceNoMinimum price filter in £
property_typeNoFilter by type: F=flat, D=detached, S=semi, T=terraced

Output Schema

ParametersJSON Schema
NameRequiredDescription

No output parameters

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 describes the search behavior but omits details like result limits beyond default, pagination, error handling, or response format. Adding such details would improve transparency.

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

Conciseness5/5

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

The description is extremely concise: two sentences plus examples, no wasted words. The purpose is front-loaded, and every sentence adds meaningful guidance.

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 10 optional parameters and an output schema exists, the description covers the high-level search modes. It could note that at least one search criterion is expected (since no required params) and briefly mention typical data fields returned, but overall it is fairly complete.

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

Parameters3/5

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

The input schema has 100% description coverage, so the description adds only marginal value (e.g., grouping parameters into search types). It does not elaborate on parameter interactions or formatting beyond schema descriptions.

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

Purpose5/5

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

The description clearly states the tool searches Land Registry transactions by multiple criteria and provides concrete examples (e.g., specific property history, filtered market queries), effectively distinguishing it from sibling tools focused on reports, yields, or company data.

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 explicitly advises when to use the tool ('specific property history' or 'filtered market queries'), offering clear context. However, it does not explicitly mention when not to use it or name specific alternatives, though the sibling list implies alternatives.

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

property_blocksAInspect

Find buildings with multiple flat sales — block buying opportunities.

Groups Land Registry transactions by building to identify blocks being sold off, investor exits, and bulk-buy opportunities.

ParametersJSON Schema
NameRequiredDescriptionDefault
limitNoMaximum number of blocks to return (default 50)
monthsNoLookback period in months (default 24)
postcodeYesUK postcode (e.g. "B1 1AA")
search_levelNoSearch granularity — "postcode", "sector", or "district" (default "sector")sector
property_typeNoPPD property type filter — "F" for flats, None for all types (default "F")F
min_transactionsNoMinimum sales per building to qualify (default 2)

Output Schema

ParametersJSON Schema
NameRequiredDescription

No output parameters

Behavior3/5

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

No annotations provided, so description must convey behavior. It explains grouping by building and filtering by minimum transactions, which is adequate. However, it omits side effects, permissions, or data freshness. A bit more detail on output nature would improve transparency.

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

Conciseness5/5

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

Two concise sentences with no wasted words. The first sentence front-loads the core purpose ('Find buildings with multiple flat sales'). Ideal structure for quick comprehension.

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 tool's grouping logic and target use cases. With an output schema present, return values are documented. Minor gap: the description says 'flat sales' but the property_type default is 'F' (flats), and can be changed to null for all types, which is not highlighted.

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?

Input schema provides full descriptions for all 6 parameters (100% coverage). The tool description adds no additional parameter meaning beyond the schema, so baseline score of 3 is appropriate.

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

Purpose5/5

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

The description clearly states the tool finds buildings with multiple flat sales for bulk-buy opportunities, using specific verbs like 'group' and 'identify'. It distinguishes from siblings like ppd_transactions (individual transactions) and property_comps (comparables).

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?

Provides clear context for use-case (block buying, investor exits), but does not explicitly state when not to use it or compare with alternatives. The sibling tool list provides implicit differentiation.

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

property_compsAInspect

Comparable property sales from Land Registry Price Paid Data.

Returns clean residential standard sales by default. Bulk transfers (transaction_category "B") and commercial units are excluded unless you opt back in. Auto-escalates to wider search area if fewer than 5 results found.

ParametersJSON Schema
NameRequiredDescriptionDefault
limitNoMax transactions to return (default 30)
monthsNoLookback period in months (default 24)
addressNoOptional street address to identify subject property and show percentile rank
postcodeYesUK postcode (e.g. "SW1A 1AA", "NG11 9HD")
enrich_epcNoAdd floor area, price/sqft, and EPC rating to each comp (default true)
search_levelNoSearch area granularity - usually leave as defaultsector
auto_escalateNoWiden search area if fewer than 5 results (default true). Set false to keep results local — useful when district-level escalation would include irrelevant areas.
property_typeNoResidential filter. None (default) = residential set (F+D+S+T). "F"=flat, "D"=detached, "S"=semi, "T"=terraced, "O"=commercial-only. Pass "ALL" for the raw firehose including commercial.
filter_outliersNoWhen True, applies a 1.5×IQR price filter (needs ≥4 prices). Default False — median is naturally robust; opt in for a cleaner mean.
transaction_categoryNo"A" (default) = standard residential sales only. Pass None to include category-B (bulk transfers, intra-group conveyances).A

Output Schema

ParametersJSON Schema
NameRequiredDescription

No output parameters

Behavior4/5

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

The description discloses key behaviors: default exclusion of bulk transfers and commercial units, and auto-escalation of search area. Since no annotations are provided, the description carries the full burden and adequately covers the main behavioral traits. It does not mention read-only status but that is implicit. 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.

Conciseness5/5

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

The description is three sentences, front-loaded with the tool's purpose, followed by core behavioral details. Every sentence adds essential information with no redundancy or fluff.

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

Completeness4/5

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

Given the tool's complexity (10 parameters, output schema exists), the description covers the most important aspects: default filtering, auto-escalation, and the exclusion of certain transaction categories. It omits mention of the address percentile rank feature, but the schema description for that parameter covers it. Overall sufficient for an agent to understand core behavior.

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 baseline is 3. The description adds value by explaining the rationale behind defaults (e.g., why bulk transfers are excluded by default) and how auto_escalate interacts with search_level. This narrative ties parameters together beyond the schema's individual descriptions.

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

Purpose5/5

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

The description clearly states the tool returns comparable property sales from Land Registry Price Paid Data. It specifies that by default it returns clean residential standard sales, excluding bulk transfers and commercial units, and mentions auto-escalation. This distinguishes it from sibling tools like ppd_transactions which likely provide raw transaction data.

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 indicates when to use the default behavior (residential comps) and when to opt in for bulk/commercial. It explains the auto-escalation feature and provides guidance on setting auto_escalate to false for local results. However, it does not explicitly compare to sibling tools 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.

property_epcAInspect

EPC certificate data for a UK property or postcode area.

With address: returns the matched certificate for that property — energy rating, score, floor area, construction age, heating costs.

Without address: returns all certificates at the postcode with area-level aggregation (rating distribution, floor area range, property type breakdown). Use this for area analysis rather than a single-property lookup.

ParametersJSON Schema
NameRequiredDescriptionDefault
addressNoStreet address for exact match (omit for area view)
postcodeYesUK postcode (e.g. "SW1A 1AA")

Output Schema

ParametersJSON Schema
NameRequiredDescription

No output parameters

Behavior4/5

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

With no annotations, the description carries full burden for behavioral disclosure. It thoroughly describes what happens in both modes: returning matched certificate details for a property or area-level aggregates. It does not mention error handling, idempotency, or rate limits, but for a read-only lookup tool, the described behavior is sufficient. The output schema (present but not detailed) covers the return structure.

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 concise: two short paragraphs and a bullet-like list. It front-loads the purpose, then immediately presents the two distinct cases. Every sentence adds value, with no redundancy or fluff. The structure is logical and easy to parse.

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 the tool's simple input schema (2 parameters) and the presence of an output schema (handling return structure), the description covers the necessary information. It explains the dual-mode behavior, the data fields returned in each case, and when to use each. This is complete for an agent to select and invoke the tool correctly.

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

Parameters4/5

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

The input schema already describes both parameters ('postcode' and 'address') adequately (100% coverage). The description adds value by explaining how the 'address' parameter modifies the tool's behavior: exact match when provided, area view when omitted. This goes beyond the schema's description and clarifies usage semantics.

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

Purpose5/5

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

The description clearly states the tool provides EPC certificate data for UK properties. It distinguishes two modes: with an address for a single property (returning specific energy details) and without an address for area-level aggregation (returning distribution, range, breakdown). This specificity and differentiation from sibling tools like 'property_report' or 'property_yield' earns a top score.

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 explicitly explains when to use each mode: 'Use this for area analysis rather than a single-property lookup' for the without-address case. It implies the with-address mode for exact property lookup. While it doesn't list alternatives or explicit when-not-to-use scenarios, the context is clear enough. A minor gap is not addressing prerequisites beyond the required postcode.

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

property_reportAInspect

Full data pull for a UK property in one call.

Returns sale history, area comps, EPC rating, rental market listings, current sales market listings, rental yield calculation, and price range from area median.

Requires a street address + postcode for subject property identification. Postcode-only (e.g. "NG1 2NS") returns area-level data without a subject property — use property_comps or property_yield for postcode-only queries.

ParametersJSON Schema
NameRequiredDescriptionDefault
addressYesStreet address with postcode, e.g. "10 Downing Street, SW1A 2AA"
ppd_monthsNoLookback period for comparable sales (default 24)
property_typeNoFilter comparable sales by type: F=flat, D=detached, S=semi, T=terraced (default all)
search_radiusNoRadius in miles for Rightmove searches (default 0.5)
include_rentalsNoInclude Rightmove rental market analysis (default true)
include_sales_marketNoInclude Rightmove sales market (default true)

Output Schema

ParametersJSON Schema
NameRequiredDescription

No output parameters

Behavior3/5

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

No annotations exist, so the description carries full burden. It indicates a read operation ('data pull') but does not explicitly state non-destructive nature, rate limits, or potential costs. The list of returned data partially signals behavior, but lacks explicit safety or performance notes.

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

Conciseness4/5

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

The description is concise and front-loaded with the core purpose. It lists returned data in a readable format, though slightly verbose; could be tighter with bullet points.

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 the complexity (multiple return sections) and presence of an output schema, the description fully covers what the tool returns and its usage constraints, making it complete for an agent.

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 description adds minimal value beyond what the schema already describes. It reinforces the address requirement but doesn't introduce new parameter semantics.

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

Purpose5/5

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

The description clearly states it is a 'Full data pull for a UK property in one call' and enumerates the returned data types. It explicitly distinguishes from siblings by noting that for postcode-only queries, property_comps or property_yield should be used instead.

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?

Provides explicit instructions: requires a street address + postcode for subject property; postcode-only yields area-level data; directs to specific sibling tools for such queries.

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

property_yieldBInspect

Calculate rental yield for a UK postcode.

Combines Land Registry sales data with Rightmove rental listings to produce a gross yield figure.

ParametersJSON Schema
NameRequiredDescriptionDefault
monthsNoSales lookback period in months (default 24)
radiusNoRental search radius in miles (default 0.5)
postcodeYesUK postcode (e.g. "NG11", "SW1A 1AA")
search_levelNo"sector" (recommended), "district", or "postcode"sector
property_typeNoFilter comparable sales by type: F=flat, D=detached, S=semi, T=terraced (default all)

Output Schema

ParametersJSON Schema
NameRequiredDescription

No output parameters

Behavior3/5

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

No annotations provided, so description must shoulder the burden. It mentions the tool combines data sources but lacks details on side effects, limitations, or output format. Vague wording like 'produce a gross yield figure' could be more precise.

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?

Extremely concise: two sentences front-loading the main purpose. No unnecessary words or repetition.

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

Completeness3/5

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

Output schema exists but description is minimal for a financial calculation tool. No mention of calculation method, data recency, or edge cases. Adequate for a straightforward tool but could be more informative.

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?

Input schema covers all 5 parameters with good descriptions (100% coverage). The tool description adds no additional parameter meaning beyond what the schema already provides, so baseline score is appropriate.

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

Purpose4/5

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

The description clearly states the tool calculates rental yield for a UK postcode, using specific data sources. However, it does not explicitly differentiate from sibling tools like rental_analysis, though the combination of sales and rental data is unique.

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

Usage Guidelines2/5

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

No guidance on when to use this tool versus alternatives, no prerequisites or constraints mentioned. The description only states what it does, not when 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.

rental_analysisAInspect

Rental market analysis for a UK postcode.

Returns median/average rent, listing count, and rent range. Optionally calculates gross yield from a given purchase price. Auto-escalates search radius if local listings are sparse (thin market).

ParametersJSON Schema
NameRequiredDescriptionDefault
radiusNoSearch radius in miles (default 0.5)
postcodeYesUK postcode (e.g. "NG1 1AA")
auto_escalateNoWiden radius if fewer than 3 listings found (default true)
building_typeNoFilter by building type: F=flat, D=detached, S=semi, T=terraced (default all)
purchase_priceNoOptional purchase price to calculate gross yield

Output Schema

ParametersJSON Schema
NameRequiredDescription

No output parameters

Behavior4/5

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

With no annotations, the description discloses key behavioral traits: auto-escalation of search radius for thin markets and optional yield calculation. This is useful context beyond the schema, though additional details like data freshness or rate limits are omitted.

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, front-loaded with purpose, followed by outputs and notable features. No wasted words; each sentence earns its place.

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 5 parameters, the description covers core purpose, outputs, and key behavior (auto-escalation). Lacks detail on radius escalation step size or handling of missing data, but overall adequate for tool selection.

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%, and the description complements it by explaining how parameters relate to outputs (e.g., purchase_price for yield). However, it does not add significant new meaning beyond the schema's own parameter descriptions.

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

Purpose5/5

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

The description clearly states the tool is for rental market analysis in a UK postcode, listing specific outputs (median/average rent, listing count, rent range) and optional yield calculation. It distinguishes itself from sibling tools like property_yield and rightmove_search.

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

Usage Guidelines3/5

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

The description implies usage context (UK postcode, rent analysis) but does not explicitly guide when to use this vs. alternatives like property_yield for yield-focused queries or rightmove_search for listings. No when-not-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.

rightmove_listingAInspect

Fetch full details for a Rightmove listing by ID or URL.

Returns price, tenure, lease years remaining, service charge, ground rent, council tax band, floor area, key features, nearest stations, and floorplan URLs. Set include_images=True to also fetch and return image URLs (use rightmove_listing without include_images for basic detail, check image_urls field for photos).

ParametersJSON Schema
NameRequiredDescriptionDefault
max_imagesNoMax image URLs to include when include_images=True (default 8)
property_idYesRightmove property URL (e.g. "https://www.rightmove.co.uk/properties/12345678") or numeric ID (e.g. "12345678")
include_imagesNoInclude image URLs in the response (default False)

Output Schema

ParametersJSON Schema
NameRequiredDescription

No output parameters

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. It discloses that the tool fetches data and lists returned fields, but it does not explicitly state read-only behavior, authentication requirements, or potential rate limits. The behavioral disclosure is adequate but not thorough.

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

Conciseness4/5

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

The description is front-loaded with the main purpose, then lists return fields concisely, and ends with a usage note. It is efficient but could be shorter by omitting redundant details already in the schema. Still, it is well-structured and easy to parse.

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 presence of an output schema, the description does not need to explain return values. It covers the tool's capabilities (fetching details, optionally images) and mentions default behavior. It is reasonably complete for a data retrieval tool, though missing error handling or fallback behavior.

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 baseline is 3. The description adds context by explaining the effect of include_images and providing an example for property_id, but these add little beyond the schema's own descriptions. The description does not provide additional semantic value for the parameters.

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

Purpose5/5

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

The description clearly states it fetches full details for a Rightmove listing by ID or URL, with a specific verb and resource. It distinguishes itself from sibling tools (e.g., rightmove_search searches listings, others provide specific subsets) by focusing on a single listing's comprehensive details.

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

Usage Guidelines2/5

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

The description provides internal guidance on setting include_images for image URLs but offers no guidance on when to use this tool versus sibling tools like property_report or property_epc. It does not specify alternatives or exclusion conditions, leaving the agent without clear decision criteria.

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

stamp_dutyBInspect

Calculate UK Stamp Duty Land Tax (SDLT) for a residential property.

ParametersJSON Schema
NameRequiredDescriptionDefault
priceYesPurchase price in £
non_residentNoTrue if buyer not UK resident (+2% surcharge)
first_time_buyerNoTrue for first-time buyer relief (up to £300k nil rate)
additional_propertyNoTrue if buying additional property (+5% surcharge)

Output Schema

ParametersJSON Schema
NameRequiredDescription

No output parameters

Behavior2/5

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

No annotations to supplement behavioral details. The description only says 'calculate', implying a read operation, but lacks disclosure of authentication needs, rate limits, or whether it uses current tax rates. Minimal transparency beyond the basic function.

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?

Single sentence, no wasted words. Front-loaded with core purpose. Concise and to the point.

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 presence of an output schema, the description need not detail return values. However, it could mention that it uses current SDLT rates or handles reliefs. Overall adequate for a calculator tool.

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

Parameters3/5

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

Schema description coverage is 100% with each parameter having clear descriptions (e.g., price in £, surcharges). The tool description adds no extra parameter information beyond what the schema already provides, so baseline score of 3 is appropriate.

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?

Description clearly states it calculates UK Stamp Duty Land Tax for residential properties. The verb 'calculate' and specific resource 'SDLT' make the purpose unambiguous and distinguish it from sibling tools like property_comps or rental_analysis.

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

Usage Guidelines2/5

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

No guidance on when to use this tool versus siblings. It does not mention alternaive tools for non-residential property or other tax calculators. The description provides no context for appropriate usage scenarios.

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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