mcp-bbc-goodfood
mcp-bbc-goodfood
Un servidor MCP que lee recetas en BBC Good Food. Solo lectura, sin clave de API, sin cuenta.
Por qué existe
BBC Good Food acepta cualquier valor en una faceta de búsqueda y responde a uno que no conoce con un total de cero. Pide glutenfree en lugar de gluten-free y el sitio dice que nada coincide, con la misma confianza con la que dice que 48 recetas coinciden con la ortografía correcta. Un modelo que adivina una ortografía recibe una ausencia confiada en lugar de un rechazo.
Este servidor publica el vocabulario, para que la pregunta pueda hacerse correctamente.
Related MCP server: mcp-cookbook
La herramienta
list_filters
Lista los ejes a lo largo de los cuales se puede restringir una búsqueda de recetas, con los valores que toma cada uno y cuántas recetas los llevan.
Argumento | Tipo | Significado |
| cadena, opcional | Mide los recuentos dentro de esta búsqueda. Omítelo para el listado completo del sitio. |
El sitio cuenta sus facetas sobre las filas que devuelve una búsqueda, por lo que las dos responden a preguntas diferentes. Dentro de chicken, diet informa gluten-free 48. En todo el listado informa gluten-free 2810. Ninguno es comparable con el otro, y la respuesta dice qué alcance midió.
{
"query": "chicken",
"filters": [
{
"name": "diet",
"label": "Diets",
"options": [{ "value": "gluten-free", "label": "Gluten-free", "count": 48 }],
"option_count": 10
}
],
"filter_count": 9,
"total_available": 363,
"total_is_ceiling": false,
"rows_seen": 30,
"matched_rows": 30,
"source": "BBC Good Food",
"notes": ["…"]
}Lo que las respuestas se niegan a exagerar
Los valores publicados son una lista corta. El sitio muestra los diez valores más frecuentes en un eje y acepta otros que nunca lista: cuisine=mexican restringe una búsqueda a 306 recetas sin aparecer entre los diez. La respuesta dice que la lista es un extracto en lugar de llamarla el conjunto de valores aceptados, porque un servidor que la llamara así rechazaría valores que funcionan.
Un total puede ser un mínimo. El sitio sirve como máximo 10 000 filas para una búsqueda y se detiene ahí. Un total que cae exactamente en esa cifra fue cortado, por lo que indica un mínimo en lugar de un recuento, y total_is_ceiling lo dice.
Un recuento para el que el sitio no publicó nada es null, nunca 0. En una escala que comienza en cero, los dos serían indistinguibles.
El sitio responde a un término del que no tiene nada con filas todas iguales. Buscar foobar devuelve siete recetas — entre ellas un refresco de ruibarbo y una barra de flapjack — coincidiendo por fragmentos, sin que nada marque la respuesta como un fallo. Por lo tanto, cada respuesta informa rows_seen y matched_rows: cuántas filas sirvió el sitio y cuántas de ellas llevan una palabra de la búsqueda. Cuando el segundo es cero y el primero no, una nota dice que el recuento describe lo que el sitio ofreció en lugar de lo que coincidió.
Dos recuentos en lugar de un veredicto. Una búsqueda legítima puede estar ausente de todos los títulos, y un lector que ve 2 de 30 juzga mejor que una bandera que juzga por él.
Instalación
npx mcp-bbc-goodfoodClaude Code
claude mcp add bbc-goodfood -- npx -y mcp-bbc-goodfoodCualquier cliente MCP
{
"mcpServers": {
"bbc-goodfood": {
"command": "npx",
"args": ["-y", "mcp-bbc-goodfood"]
}
}
}Contenedor
docker build -t mcp-bbc-goodfood .
docker run -i --rm mcp-bbc-goodfoodEl contenedor necesita alcanzar www.bbcgoodfood.com y nada más. No toma credenciales, porque no hay ninguna que tomar.
Configuración
Cada ajuste es una variable de entorno, y ninguno es obligatorio. Un valor fuera de su rango se rechaza con una línea en stderr y el valor predeterminado se mantiene: un ajuste que no puede tener efecto lo dice en lugar de ser limitado silenciosamente.
Variable | Predeterminado | Rango |
| — | Tu propio identificador. El de este proyecto se mantiene añadido, para que el sitio pueda contactar a una persona. |
| 1500 | 1000 a 60000 |
| 20000 | 1000 a 120000 |
| 3 | 0 a 8 |
| 900000 | 0 a 86400000, 0 apaga el almacenamiento |
| 200 | 1 a 5000 |
|
|
|
El límite mínimo de ritmo no puede reducirse desde fuera. El sitio es gratuito de leer y no publica ningún retraso de rastreo, lo cual es una razón para ser cuidadoso en lugar de una licencia para ir rápido.
Como biblioteca
La capa de lectura se publica por sí sola, con su ritmo, su almacenamiento y su vocabulario de errores, sin protocolo adjunto:
import { GoodFoodClient } from "mcp-bbc-goodfood/client";Errores
Seis códigos y no más. Un llamador se ramifica en el código que abre el mensaje.
Código | Qué significa |
| El sitio no tiene nada en esa dirección |
| Los argumentos no pudieron producir una solicitud |
| El sitio pidió a este cliente que reduzca la velocidad. No dice nada sobre si algo coincidió |
| Una respuesta llegó en una forma que este servidor no puede leer |
| La solicitud no pudo completarse |
| No llegó ninguna respuesta dentro del plazo |
Atribución
Las recetas, los títulos y los recuentos pertenecen a BBC Good Food. Cada respuesta lleva la fuente, y un listado mostrado a un lector debe acreditar al sitio y enlazar la página.
Contribuciones
Ver CONTRIBUTING.md. Las pruebas van primero, la cobertura tiene un mínimo del 100%, y la regla que todo sigue es que el servidor nunca dice nada que los datos no contengan.
Licenciado bajo MIT.
mcp-bbc-goodfood (français)
Un servidor MCP que lee recetas de BBC Good Food. Solo lectura, sin clave de API y sin cuenta.
Por qué existe
BBC Good Food acepta cualquier valor en una faceta de búsqueda y responde a un valor que no conoce con un total de cero. Pide glutenfree en lugar de gluten-free y el sitio responde que nada coincide, con la seguridad que pone al decir que 48 recetas coinciden con la ortografía correcta. Un modelo que adivina una ortografía recibe una ausencia confiada en lugar de un rechazo.
Este servidor publica el vocabulario, para que la pregunta pueda plantearse.
La herramienta
list_filters
Lista los ejes a lo largo de los cuales se puede restringir una búsqueda de recetas, con los valores que toma cada uno y el número de recetas que los llevan.
Argumento | Tipo | Significado |
| cadena, opcional | Mide los recuentos dentro de esta búsqueda. Sin él, se refieren al listado completo del sitio. |
El sitio cuenta sus facetas sobre las filas que devuelve una búsqueda, por lo que los dos responden a preguntas diferentes. Dentro de chicken, diet anuncia gluten-free 48. En el listado completo, anuncia gluten-free 2810. Ninguno de los dos es comparable con el otro, y la respuesta dice qué alcance midió.
Lo que las respuestas se niegan a afirmar
Los valores publicados son un extracto. El sitio muestra los diez valores más frecuentes de un eje y acepta otros que nunca lista: cuisine=mexican restringe una búsqueda a 306 recetas sin figurar entre los diez. La respuesta dice que la lista es un extracto en lugar de llamarla el conjunto de valores aceptados, porque un servidor que la llamara así rechazaría valores que funcionan.
Un total puede ser un mínimo. El sitio sirve como máximo 10 000 líneas para una búsqueda y se detiene ahí. Un total que cae exactamente en ese número fue cortado, por lo que enuncia un mínimo en lugar de un recuento, y total_is_ceiling lo dice.
Un recuento que el sitio no ha publicado vale null, nunca 0. En una escala que comienza en cero, los dos serían indistinguibles.
El sitio responde igualmente a un término del que no tiene nada. Buscar foobar devuelve siete recetas, entre ellas un cóctel de ruibarbo y una barra de flapjack, acercadas por fragmentos, sin que nada marque la respuesta como un fracaso. Cada respuesta devuelve por tanto rows_seen y matched_rows: cuántas líneas sirvió el sitio y cuántas de ellas llevan una palabra de la búsqueda. Cuando la segunda vale cero y la primera no, una nota dice que el recuento describe lo que el sitio propuso en lugar de lo que corresponde.
Dos recuentos en lugar de un veredicto. Una búsqueda legítima puede no aparecer en ningún título, y un lector que ve 2 de 30 juzga mejor que una bandera que juzgaría por él.
Instalación
npx mcp-bbc-goodfoodClaude Code
claude mcp add bbc-goodfood -- npx -y mcp-bbc-goodfoodCualquier cliente MCP
{
"mcpServers": {
"bbc-goodfood": {
"command": "npx",
"args": ["-y", "mcp-bbc-goodfood"]
}
}
}Contenedor
docker build -t mcp-bbc-goodfood .
docker run -i --rm mcp-bbc-goodfoodEl contenedor debe alcanzar www.bbcgoodfood.com y nada más. No toma ningún identificador, ya que no hay ninguno que tomar.
Configuración
Cada ajuste es una variable de entorno, y ninguna es obligatoria. Un valor fuera de límites se rechaza con una línea en stderr y el valor predeterminado se mantiene: un ajuste que no puede tener efecto lo dice, en lugar de ser limitado en silencio.
Variable | Predeterminado | Límites |
| — | Tu identificador. El del proyecto se mantiene añadido, para que el sitio pueda contactar a una persona. |
| 1500 | 1000 a 60000 |
| 20000 | 1000 a 120000 |
| 3 | 0 a 8 |
| 900000 | 0 a 86400000, 0 apaga el almacenamiento |
| 200 | 1 a 5000 |
|
|
|
El límite mínimo del ritmo no puede reducirse desde fuera. El sitio es gratuito de leer y no publica ningún retraso de exploración, lo que es una razón para ser prudente en lugar de una licencia para ir rápido.
Como biblioteca
La capa de lectura se publica sola, con su ritmo, su almacenamiento y su taxonomía de errores, sin protocolo adjunto:
import { GoodFoodClient } from "mcp-bbc-goodfood/client";Errores
Seis códigos y no uno más. Un llamador se ramifica en el código que abre el mensaje.
Código | Significado |
| El sitio no tiene nada en esta dirección |
| Los argumentos no pudieron producir una solicitud |
| El sitio pidió que se ralentizara. Esto no dice nada sobre lo que coincide |
| Llegó una respuesta en una forma que este servidor no sabe leer |
| La solicitud no pudo completarse |
| No llegó ninguna respuesta dentro del plazo |
Atribución
Las recetas, los títulos y las cuentas pertenecen a BBC Good Food. Cada respuesta lleva la fuente, y un listado mostrado a un lector debe acreditar el sitio y enlazar la página.
Contribuir
Ver CONTRIBUTING.md. Primero las pruebas, un mínimo de cobertura del 100 % y la regla que lo gobierna todo: el servidor nunca dice algo que los datos no respalden.
Bajo licencia MIT.
Available Tools
4 toolsget_recipeRead a recipeARead-onlyIdempotent
Read one recipe on BBC Good Food: its ingredients, its steps, its times, its rating and its nutrition. Pass the 'id' a search_recipes row carries, which is the page's own path. A recipe behind the site's subscription comes back with everything except its ingredients and steps, and says so: its page on the site is where a subscriber reads it. The site writes many of its recipes twice, once for its own readers and once restated for readers in the United States, and 'unit_system' chooses which of the two to read.
| Name | Required | Description | Default |
|---|---|---|---|
| id | Yes | The page's own path, as a search_recipes row carries it. | |
| servings | No | Put the ingredients to this many people. Quantities are then recomputed by this server, not published by the site, and each line says so under 'scaling'. | |
| unit_system | No | Which of the site's own two renditions to read: 'metric' as it writes for its own readers, 'us' as it restates for readers in the United States. Both are the site's words. A recipe it restated nowhere comes back as it published it, said in 'unit_system' and in the notes. |
Output Schema
| Name | Required | Description |
|---|---|---|
| id | Yes | |
| url | Yes | The page. Show this when citing the recipe. |
| diets | Yes | |
| notes | Yes | |
| steps | Yes | Empty when the recipe sits behind the site's subscription. |
| title | Yes | |
| yield | Yes | What the ingredients were put to, and what they were put from. |
| author | Yes | |
| rating | Yes | 1 to 5. Null when nobody has rated it. |
| source | Yes | |
| premium | Yes | True when the recipe sits behind the site's subscription. |
| nutrition | Yes | |
| difficulty | Yes | |
| yield_text | Yes | The site's own wording, such as 'Serves 4 - 6'. |
| description | Yes | |
| ingredients | Yes | Empty when the recipe sits behind the site's subscription. |
| unit_system | Yes | Which of the site's two renditions this answer carries. |
| yield_count | Yes | The first whole number of that wording. |
| cook_minutes | Yes | |
| prep_minutes | Yes | |
| rating_count | Yes | |
| nutrition_per | Yes | The site's own wording for the serving. |
| total_minutes | Yes |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Beyond the readOnly/idempotent annotations, the description reveals that subscription recipes omit ingredients and steps but explicitly say so, and that many recipes exist in two regional renditions selected by unit_system. This is meaningful behavioral context that annotations alone don't provide.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Three sentences, all informative, with the core purpose front-loaded. No redundant filler; each clause earns its place, including the paywall caveat and regional variant explanation.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a single-recipe read operation with a full output schema and strong annotations, the description covers the key edge cases (paywall, regional variants) and the id provenance. Nothing essential for calling it correctly is missing.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The schema already documents all three parameters in detail (100% coverage), including id's source and unit_system's meaning. The description adds no new parameter-level detail beyond restating id's origin and unit_system's role, so a baseline 3 is appropriate.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
States a specific verb ('Read') and resource ('one recipe on BBC Good Food') and enumerates the data fields returned (ingredients, steps, times, rating, nutrition). It clearly differentiates from siblings by focusing on a single recipe rather than searching, filtering, or scaling.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Explicitly tells the agent to pass the 'id' that a search_recipes row carries, anchoring this tool to the search workflow. It also explains the subscription edge case and the unit_system choice, giving context for when these options matter, though it doesn't list explicit exclusions vs siblings.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
list_filtersList the ways a search can be narrowedARead-onlyIdempotent
List the axes a recipe search can be narrowed along on BBC Good Food, with the values each one takes and how many recipes carry them. Pass 'query' to measure the counts inside one search, or leave it out for the site's whole listing. Read this before narrowing a search: the site accepts any value on a facet and answers one it does not know with a total of zero, so a guessed spelling comes back as a confident absence. The values listed are an excerpt of the most frequent ones, and the site accepts others that are not shown.
| Name | Required | Description | Default |
|---|---|---|---|
| query | No | A search to measure the counts inside. The site counts its facets over the rows a search returns, so a count without a query describes the whole listing instead. |
Output Schema
| Name | Required | Description |
|---|---|---|
| notes | Yes | |
| query | Yes | The search the counts were measured in, trimmed. |
| source | Yes | |
| filters | Yes | |
| filter_count | Yes | |
| total_available | Yes | Recipes the site says this scope holds. Null when it published no figure. |
| total_is_ceiling | Yes | True when the total sits on the largest number of rows one search will serve, so it states a floor rather than a count. |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, openWorldHint, idempotentHint, and destructiveHint=false, and the description adds meaningful behavioral detail beyond that: the site returns zero for any unknown facet value, so a guessed spelling looks like a confident absence. It also discloses that the listed values are only an excerpt and other values are accepted, which is important practical information.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is four sentences, front-loaded with the core behavior and followed by the important open-world caveat and excerpt warning. Every sentence earns its place, and there is no filler or repeated schema content.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
With one optional parameter, a rich schema description, an output schema, and annotations, the description covers what an agent needs: how to scope the counts, the fact that counts are measured over search results, and the open-world behavior. There are no obvious gaps that would prevent correct invocation.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage for the single query parameter is 100%, so the schema already explains that counts without a query describe the whole listing. The description restates this idea but does not add much meaning beyond the schema, so a baseline 3 is appropriate.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description states a specific action and resource: listing the axes a recipe search can be narrowed along on BBC Good Food, including values and recipe counts. This clearly distinguishes it from the sibling tools such as search_recipes because it is about enumerating facets rather than performing a search or fetching a recipe.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description gives clear context by saying to read this before narrowing a search, and it explains how to get counts for a specific query versus the whole listing. It does not explicitly name search_recipes as the execution alternative, but the sequencing guidance and facet-counting behavior make the intended use obvious.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
scale_ingredientsScale a list of ingredientsARead-onlyIdempotent
Put a list of ingredient lines to a different number of people. Pass 'factor', or else the pair 'from_servings' and 'to_servings'. Quantities are recomputed by this server and not by the site, and every line says under 'scaling' whether the arithmetic landed exactly, whether the figure was moved to stay usable in a kitchen, or whether the line carried nothing to multiply.
| Name | Required | Description | Default |
|---|---|---|---|
| factor | No | What to multiply every quantity by. Pass this or the servings pair, never both. | |
| ingredients | Yes | The lines to scale, as a recipe writes them, such as '200g plain flour'. | |
| to_servings | No | How many people it should feed. | |
| from_servings | No | How many people the list feeds as written. |
Output Schema
| Name | Required | Description |
|---|---|---|
| notes | Yes | |
| factor | Yes | What every quantity was multiplied by. |
| source | Yes | |
| ingredients | Yes | |
| scaled_count | Yes | Lines whose arithmetic landed exactly. |
| rounded_count | Yes | Lines whose figure was moved. |
| unscaled_count | Yes | Lines that carried no quantity to multiply. |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The description goes beyond the annotations by revealing that quantities are recomputed server-side, not by the website, and explains what each ingredient line will state under 'scaling'. This tells the caller what to expect and that the operation is non-destructive and idempotent. This aligns with the readOnly/idempotent annotations without contradicting them.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is relatively brief and field-oriented. It leads with the primary purpose, covers the parameter modes, and includes the useful scaling behavior. The sentence about scaling statuses is a bit long, but it earns its place because it describes what to expect in the output.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
The description is sufficient for an agent to know when to use the tool, which keys to pass, and what the output will say about each line. Combined with an output schema, full parameter schema coverage, and annotations, no critical behavioral details are missing for safe and correct invocation.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The schema already provides descriptions for all 4 parameters, so the baseline is adequate. The description adds value by explaining the mutually exclusive relationship between 'factor' and the servings pair, something the schema alone does not emphasize. It also gives semantic meaning to the scaling status output without repeating schema details.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description states a strong verb and resource: it scales a list of ingredient lines to a different number of people. It also distinguishes the tool's operation from the siblings (search, listing, fetching) by naming the computation mode. The added detail about 'factor' or 'servings pair' makes the purpose precise.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description explains exactly how the tool should be invoked: pass 'factor' or the 'from_servings'/'to_servings' pair. It clearly communicates the mutually exclusive parameter use. It does not explicitly discuss when to use this tool versus the siblings, but the tool's purpose is sufficiently distinct for an agent to select it without deep inference.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
search_recipesSearch recipesARead-onlyIdempotent
Search recipes on BBC Good Food and return a listing. Narrow it with 'diet', 'cuisine', 'meal_type', 'difficulty' or a bound such as 'max_total_minutes'; call list_filters first for the values each one takes, since the site answers a value it does not know with a count of zero. The site ranks rather than filters: it answers a term it holds nothing for with rows all the same, so read the titles rather than trusting the count. Each row carries the page to read the recipe on.
| Name | Required | Description | Default |
|---|---|---|---|
| diet | No | A value list_filters publishes. | |
| page | No | Which page of rows. Default 1. | |
| sort | No | How the site orders the rows. Default 'relevant'. | |
| limit | No | Rows to return. Default 30. | |
| query | Yes | A dish, an ingredient, a technique. | |
| cuisine | No | A value list_filters publishes. | |
| meal_type | No | A value list_filters publishes. | |
| difficulty | No | A value list_filters publishes. | |
| min_rating | No | At least this many stars, 1 to 5. | |
| max_calories | No | Per serving. | |
| min_servings | No | At least this many servings. | |
| exclude_premium | No | Drop the rows that sit behind the site's subscription. The site offers no such restriction, so the rows are removed from the page after it arrives: a page comes back shorter than the limit asked for, and a short page is not the end of the results. | |
| max_total_minutes | No | Whole recipe, minutes. |
Output Schema
| Name | Required | Description |
|---|---|---|
| notes | Yes | |
| query | Yes | |
| source | Yes | |
| results | Yes | |
| rows_seen | Yes | Rows the site served, before anything was set aside. |
| result_count | Yes | Rows rendered, after anything unreadable was set aside. |
| premium_dropped | Yes | Rows removed from this page for sitting behind the site's subscription. |
| total_available | Yes | Recipes the site says the search holds. |
| total_is_ceiling | Yes | True when the total sits on the most rows one search will serve, so it states a floor. |
| restrictions_lifted | Yes | Restrictions let go of so the search could run again after the restricted one returned nothing. |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Beyond the readOnly/idempotent annotations, it discloses that the site ranks rather than filters, that unknown terms produce identical rows rather than reliable counts, and that each row carries the page to read the recipe on. These are non-obvious behaviors an agent needs to interpret results correctly.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is dense but every sentence contributes: scope, filtering guidance, result-interpretation warning, and page-link follow-up. It is front-loaded with the core purpose and wastes no words.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
With an output schema present and annotations covering read-only, idempotent, and non-destructive behavior, the description covers the remaining operational caveats: filter-value lookup, ranking semantics, and the meaning of rows. Nothing needed to call the tool correctly is missing.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 100%, so the baseline is 3. The description adds little parameter-level meaning beyond pointing to list_filters for filter values and highlighting max_total_minutes as a bound, both of which the schema already covers.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description opens with a specific verb and resource: 'Search recipes on BBC Good Food and return a listing.' It distinguishes itself from list_filters by explicitly instructing to call list_filters first, and from get_recipe by framing the output as a listing whose rows carry the page for reading the recipe.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
It gives explicit usage guidance: call list_filters first for filter values and warns that unknown values return zero counts. It does not explicitly name get_recipe as the alternative for reading a single recipe, though the closing sentence implies that follow-up.
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.
4 tool updates
v1.1.0- Changed
get_recipe23 fields changed- removed
Output schema / properties / author / anyOfRemoved value: -[ - { - "type": "string" - }, - { - "type": "null" - } -] - added
Output schema / properties / author / typeAdded value: +[ + "string", + "null" +] - removed
Output schema / properties / description / anyOfRemoved value: -[ - { - "type": "string" - }, - { - "type": "null" - } -] - added
Output schema / properties / description / typeAdded value: +[ + "string", + "null" +] - removed
Output schema / properties / difficulty / anyOfRemoved value: -[ - { - "type": "string" - }, - { - "type": "null" - } -] - added
Output schema / properties / difficulty / typeAdded value: +[ + "string", + "null" +] - removed
Output schema / properties / ingredients / items / properties / heading / anyOfRemoved value: -[ - { - "type": "string" - }, - { - "type": "null" - } -] - added
Output schema / properties / ingredients / items / properties / heading / typeAdded value: +[ + "string", + "null" +] - changed
Output schema / properties / ingredients / items / properties / ingredients / items / anyOfPrevious value: -[ - { - "additionalProperties": false, - "properties": { - "amount": { - "anyOf": [ - { - "type": "number" - }, - { - "type": "null" - } - ], - "description": "Null when the site states no quantity." - }, - "item": { - "description": "What goes in, without its quantity.", - "type": "string" - }, - "note": { - "anyOf": [ - { - "type": "string" - }, - { - "type": "null" - } - ], - "description": "What to do to it beforehand, such as 'thinly sliced'." - }, - "term": { - "anyOf": [ - { - "type": "string" - }, - { - "type": "null" - } - ], - "description": "The site's own normalised name for it." - }, - "text": { - "description": "The line as the site composes it.", - "type": "string" - }, - "unit": { - "anyOf": [ - { - "type": "string" - }, - { - "type": "null" - } - ] - } - }, - "required": [ - "text", - "amount", - "unit", - "item", - "note", - "term" - ], - "type": "object" - }, - { - "additionalProperties": false, - "properties": { - "amount": { - "anyOf": [ - { - "type": "number" - }, - { - "type": "null" - } - ] - }, - "amount_max": { - "anyOf": [ - { - "type": "number" - }, - { - "type": "null" - } - ] - }, - "original": { - "description": "The line as the site composes it.", - "type": "string" - }, - "scaling": { - "description": "'scaled': the arithmetic landed exactly. 'rounded': the figure moved to stay usable in a kitchen. 'unscaled': the line carried no quantity.", - "enum": [ - "scaled", - "rounded", - "unscaled" - ], - "type": "string" - }, - "text": { - "description": "The line as it now reads.", - "type": "string" - }, - "unit": { - "anyOf": [ - { - "type": "string" - }, - { - "type": "null" - } - ] - } - }, - "required": [ - "text", - "original", - "scaling", - "amount", - "amount_max", - "unit" - ], - "type": "object" - } -]New value: +[ + { + "additionalProperties": false, + "properties": { + "amount": { + "description": "Null when the site states no quantity.", + "type": [ + "number", + "null" + ] + }, + "item": { + "description": "What goes in, without its quantity.", + "type": "string" + }, + "note": { + "description": "What to do to it beforehand, such as 'thinly sliced'.", + "type": [ + "string", + "null" + ] + }, + "term": { + "description": "The site's own normalised name for it.", + "type": [ + "string", + "null" + ] + }, + "text": { + "description": "The line as the site composes it.", + "type": "string" + }, + "unit": { + "type": [ + "string", + "null" + ] + } + }, + "required": [ + "text", + "amount", + "unit", + "item", + "note", + "term" + ], + "type": "object" + }, + { + "additionalProperties": false, + "properties": { + "amount": { + "type": [ + "number", + "null" + ] + }, + "amount_max": { + "type": [ + "number", + "null" + ] + }, + "original": { + "description": "The line as the site composes it.", + "type": "string" + }, + "scaling": { + "description": "'scaled': the arithmetic landed exactly. 'rounded': the figure moved to stay usable in a kitchen. 'unscaled': the line carried no quantity.", + "enum": [ + "scaled", + "rounded", + "unscaled" + ], + "type": "string" + }, + "text": { + "description": "The line as it now reads.", + "type": "string" + }, + "unit": { + "type": [ + "string", + "null" + ] + } + }, + "required": [ + "text", + "original", + "scaling", + "amount", + "amount_max", + "unit" + ], + "type": "object" + } +] - removed
Output schema / properties / nutrition / items / properties / value / anyOfRemoved value: -[ - { - "type": "number" - }, - { - "type": "null" - } -] - added
Output schema / properties / nutrition / items / properties / value / typeAdded value: +[ + "number", + "null" +] - removed
Output schema / properties / nutrition_per / anyOfRemoved value: -[ - { - "type": "string" - }, - { - "type": "null" - } -] - added
Output schema / properties / nutrition_per / typeAdded value: +[ + "string", + "null" +] - removed
Output schema / properties / rating / anyOfRemoved value: -[ - { - "type": "number" - }, - { - "type": "null" - } -] - added
Output schema / properties / rating / typeAdded value: +[ + "number", + "null" +] - removed
Output schema / properties / yield / properties / factor / anyOfRemoved value: -[ - { - "type": "number" - }, - { - "type": "null" - } -] - added
Output schema / properties / yield / properties / factor / typeAdded value: +[ + "number", + "null" +] - removed
Output schema / properties / yield / properties / original_text / anyOfRemoved value: -[ - { - "type": "string" - }, - { - "type": "null" - } -] - added
Output schema / properties / yield / properties / original_text / typeAdded value: +[ + "string", + "null" +] - removed
Output schema / properties / yield / properties / unit / anyOfRemoved value: -[ - { - "type": "string" - }, - { - "type": "null" - } -] - added
Output schema / properties / yield / properties / unit / typeAdded value: +[ + "string", + "null" +] - removed
Output schema / properties / yield_text / anyOfRemoved value: -[ - { - "type": "string" - }, - { - "type": "null" - } -] - added
Output schema / properties / yield_text / typeAdded value: +[ + "string", + "null" +]
- Changed
list_filters4 fields changed- removed
Output schema / properties / filters / items / properties / argument / anyOfRemoved value: -[ - { - "type": "string" - }, - { - "type": "null" - } -] - added
Output schema / properties / filters / items / properties / argument / typeAdded value: +[ + "string", + "null" +] - removed
Output schema / properties / query / anyOfRemoved value: -[ - { - "type": "string" - }, - { - "type": "null" - } -] - added
Output schema / properties / query / typeAdded value: +[ + "string", + "null" +]
- Changed
scale_ingredients6 fields changed- removed
Output schema / properties / ingredients / items / properties / amount / anyOfRemoved value: -[ - { - "type": "number" - }, - { - "type": "null" - } -] - added
Output schema / properties / ingredients / items / properties / amount / typeAdded value: +[ + "number", + "null" +] - removed
Output schema / properties / ingredients / items / properties / amount_max / anyOfRemoved value: -[ - { - "type": "number" - }, - { - "type": "null" - } -] - added
Output schema / properties / ingredients / items / properties / amount_max / typeAdded value: +[ + "number", + "null" +] - removed
Output schema / properties / ingredients / items / properties / unit / anyOfRemoved value: -[ - { - "type": "string" - }, - { - "type": "null" - } -] - added
Output schema / properties / ingredients / items / properties / unit / typeAdded value: +[ + "string", + "null" +]
- Changed
search_recipes8 fields changed- removed
Output schema / properties / results / items / properties / author / anyOfRemoved value: -[ - { - "type": "string" - }, - { - "type": "null" - } -] - added
Output schema / properties / results / items / properties / author / typeAdded value: +[ + "string", + "null" +] - removed
Output schema / properties / results / items / properties / difficulty / anyOfRemoved value: -[ - { - "type": "string" - }, - { - "type": "null" - } -] - added
Output schema / properties / results / items / properties / difficulty / typeAdded value: +[ + "string", + "null" +] - removed
Output schema / properties / results / items / properties / image_url / anyOfRemoved value: -[ - { - "type": "string" - }, - { - "type": "null" - } -] - added
Output schema / properties / results / items / properties / image_url / typeAdded value: +[ + "string", + "null" +] - removed
Output schema / properties / results / items / properties / rating / anyOfRemoved value: -[ - { - "type": "number" - }, - { - "type": "null" - } -] - added
Output schema / properties / results / items / properties / rating / typeAdded value: +[ + "number", + "null" +]
4 tool updates
- Added
get_recipe - Changed
list_filters4 fields changed- added
Output schema / properties / filters / items / properties / argumentAdded value: +{ + "anyOf": [ + { + "type": "string" + }, + { + "type": "null" + } + ], + "description": "The search_recipes argument that restricts this axis. Null where a search takes none. A value listed here is in the site's units and may need converting before it is passed." +} - changed
Output schema / properties / filters / items / properties / name / descriptionPrevious value: -"The argument name a search takes for this axis."New value: +"The site's own name for the axis." - changed
Output schema / properties / filters / items / properties / options / items / properties / value / descriptionPrevious value: -"Pass this back to narrow a search along this axis."New value: +"The value as the site publishes it, in the site's own units." - changed
Output schema / properties / filters / items / requiredPrevious value: -[ - "name", - "label", - "options", - "option_count" -]New value: +[ + "name", + "label", + "argument", + "options", + "option_count" +]
- Added
scale_ingredients - Changed
search_recipes4 fields changed- removed
Output schema / properties / restrictions_droppedRemoved value: -{ - "description": "Restrictions the site could not answer, dropped so the search could run.", - "items": { - "type": "string" - }, - "type": "array" -} - added
Output schema / properties / restrictions_liftedAdded value: +{ + "description": "Restrictions let go of so the search could run again after the restricted one returned nothing.", + "items": { + "type": "string" + }, + "type": "array" +} - changed
Output schema / properties / results / items / properties / id / descriptionPrevious value: -"Opaque to a caller. The site's own identifier for the recipe."New value: +"The page's own path. Pass it to get_recipe to read the recipe." - changed
Output schema / requiredPrevious value: -[ - "query", - "results", - "result_count", - "total_available", - "total_is_ceiling", - "rows_seen", - "restrictions_dropped", - "premium_dropped", - "source", - "notes" -]New value: +[ + "query", + "results", + "result_count", + "total_available", + "total_is_ceiling", + "rows_seen", + "restrictions_lifted", + "premium_dropped", + "source", + "notes" +]
2 tool updates
v0.1.0- First observed
list_filters - First observed
search_recipes
TDQS
Scored across 4 tools
Each tool serves a distinct function: list_filters discovers search axes, search_recipes performs the actual search, get_recipe retrieves details, and scale_ingredients transforms ingredient quantities. There is no overlap in purpose; the dependency between list_filters and search_recipes is clear and complementary.
All tool names follow a consistent verb_noun pattern in snake_case (list_filters, search_recipes, get_recipe, scale_ingredients). The verbs and nouns are specific and predictable, matching the domain perfectly.
Four tools are appropriate for a recipe-focused server. They cover the essential operations without redundancy or bloat, and the scope is well-defined for browsing, searching, and retrieving recipe content.
The tool surface covers the full user workflow for a read-only recipe service: discovering available filters, searching, viewing a recipe, and scaling ingredients. No critical operations are missing for the stated purpose, and the added scaling feature enhances usability without leaving gaps.
Maintenance
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