com.valotcg/valo-iav1.0.1 Domain verified
Trading card prices and sheets for Pokémon and 13 other TCGs: Cardmarket, US market, eBay, PSA
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https://api.valotcg.com/mcp
Valo.Data API key (vd_live_…), created at https://valotcg.com/developers/account
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compare_prices Read-only
Price summaries of up to 10 cards and sealed products (`sealed:{id}`) side by side. 1 credit, +1 per card and include.
Up to 10 card ids, or sealed product ids prefixed with `sealed:` (e.g. `sealed:1234`).
Extra card blocks, billed per card.
Install
Pick your client. Values in capitals, like YOUR_TOKEN, are yours to fill in.
Run in a terminal
claude mcp add --transport http valo-ia https://api.valotcg.com/mcp \ --header 'Authorization: YOUR_CREDENTIALS'
Headers
Authorization(required): Valo.Data API key (vd_live_…), created at https://valotcg.com/developers/account
Tools (16)
compare_pricesPrice summaries of up to 10 cards and sealed products (`sealed:{id}`) side by side. 1 credit, +1 per card and include.
read-only
compare_prices
Price summaries of up to 10 cards and sealed products (`sealed:{id}`) side by side. 1 credit, +1 per card and include.
| Argument | Type | Description |
|---|---|---|
| ids* | array | Up to 10 card ids, or sealed product ids prefixed with `sealed:` (e.g. `sealed:1234`). |
| include | array | Extra card blocks, billed per card. |
Input schema (JSON)
{
"type": "object",
"title": "CompareArguments",
"required": [
"ids"
],
"properties": {
"ids": {
"type": "array",
"items": {
"anyOf": [
{
"type": "integer"
},
{
"type": "string"
}
]
},
"title": "Ids",
"maxItems": 10,
"minItems": 1,
"description": "Up to 10 card ids, or sealed product ids prefixed with `sealed:` (e.g. `sealed:1234`)."
},
"include": {
"type": "array",
"items": {
"enum": [
"graded",
"population"
],
"type": "string"
},
"title": "Include",
"description": "Extra card blocks, billed per card."
}
},
"additionalProperties": false
}edition_overviewChase cards, sealed products with prices and price coverage of one edition. 3 credits.
read-only
edition_overview
Chase cards, sealed products with prices and price coverage of one edition. 3 credits.
| Argument | Type | Description |
|---|---|---|
| edition_id* | integer | Valo.Data edition id (`list_editions`). |
Input schema (JSON)
{
"type": "object",
"title": "EditionArguments",
"required": [
"edition_id"
],
"properties": {
"edition_id": {
"type": "integer",
"title": "Edition Id",
"maximum": 2147483647,
"minimum": 1,
"description": "Valo.Data edition id (`list_editions`)."
}
},
"additionalProperties": false
}get_cardFull sheet of one card: edition, number, rarity, images, marketplace ids (Growth and up). 1 credit.
read-only
get_card
Full sheet of one card: edition, number, rarity, images, marketplace ids (Growth and up). 1 credit.
| Argument | Type | Description |
|---|---|---|
| card_id* | integer | Valo.Data card id. |
Input schema (JSON)
{
"type": "object",
"title": "CardArguments",
"required": [
"card_id"
],
"properties": {
"card_id": {
"type": "integer",
"title": "Card Id",
"maximum": 2147483647,
"minimum": 1,
"description": "Valo.Data card id."
}
},
"additionalProperties": false
}get_card_pricesCurrent prices of one card from Cardmarket, the US market and eBay sales, each in its native currency. 1 credit, +1 per include.
read-only
get_card_prices
Current prices of one card from Cardmarket, the US market and eBay sales, each in its native currency. 1 credit, +1 per include.
| Argument | Type | Description |
|---|---|---|
| card_id* | integer | Valo.Data card id. |
| include | array | Cards only: `graded` (+1 credit), `population` (+1 credit, Starter plan and above). |
Input schema (JSON)
{
"type": "object",
"title": "CardPricesArguments",
"required": [
"card_id"
],
"properties": {
"card_id": {
"type": "integer",
"title": "Card Id",
"maximum": 2147483647,
"minimum": 1,
"description": "Valo.Data card id."
},
"include": {
"type": "array",
"items": {
"enum": [
"graded",
"population"
],
"type": "string"
},
"title": "Include",
"default": [],
"description": "Cards only: `graded` (+1 credit), `population` (+1 credit, Starter plan and above)."
}
},
"additionalProperties": false
}get_cards_batchCurrent prices of up to 100 cards and sealed products (`sealed:{id}`) in one call. 1 credit per call, +1 per card and include.
read-only
get_cards_batch
Current prices of up to 100 cards and sealed products (`sealed:{id}`) in one call. 1 credit per call, +1 per card and include.
| Argument | Type | Description |
|---|---|---|
| ids* | array | Up to 100 card ids, or sealed product ids prefixed with `sealed:` (e.g. `sealed:1234`). |
| include | array | Extra blocks, billed per card. |
Input schema (JSON)
{
"type": "object",
"title": "CardsBatchArguments",
"required": [
"ids"
],
"properties": {
"ids": {
"type": "array",
"items": {
"anyOf": [
{
"type": "integer"
},
{
"type": "string"
}
]
},
"title": "Ids",
"maxItems": 100,
"minItems": 1,
"description": "Up to 100 card ids, or sealed product ids prefixed with `sealed:` (e.g. `sealed:1234`)."
},
"include": {
"type": "array",
"items": {
"enum": [
"graded",
"population"
],
"type": "string"
},
"title": "Include",
"description": "Extra blocks, billed per card."
}
},
"additionalProperties": false
}get_price_historyDaily price history of one source for a card or a sealed product, bounded by the plan's history. 3 credits.
read-only
get_price_history
Daily price history of one source for a card or a sealed product, bounded by the plan's history. 3 credits.
| Argument | Type | Description |
|---|---|---|
| source* | string | |
| card_id | any | Valo.Data card id; or give `sealed_id`. |
| date_to | any | Defaults to today. |
| variant | string | Cards only: `foil` for the foil curve. |
| condition | any | With `market_language=fr`: this condition only (default: best of each day). |
| date_from | any | Defaults to the oldest day the plan allows. |
| sealed_id | any | Valo.Data sealed product id; or give `card_id`. |
| market_language | any | Cards only: `fr` for the cheapest French Cardmarket offer of a French card (`source=cardmarket`, `variant=default`); only observed days are returned. |
Input schema (JSON)
{
"type": "object",
"title": "PriceHistoryArguments",
"required": [
"source"
],
"properties": {
"source": {
"enum": [
"cardmarket",
"us_market",
"ebay"
],
"type": "string",
"title": "Source"
},
"card_id": {
"anyOf": [
{
"type": "integer",
"maximum": 2147483647,
"minimum": 1
},
{
"type": "null"
}
],
"title": "Card Id",
"default": null,
"description": "Valo.Data card id; or give `sealed_id`."
},
"date_to": {
"anyOf": [
{
"type": "string",
"format": "date"
},
{
"type": "null"
}
],
"title": "Date To",
"default": null,
"description": "Defaults to today."
},
"variant": {
"enum": [
"default",
"foil"
],
"type": "string",
"title": "Variant",
"default": "default",
"description": "Cards only: `foil` for the foil curve."
},
"condition": {
"anyOf": [
{
"enum": [
"NM",
"EX",
"GD",
"LP",
"PL",
"PO"
],
"type": "string"
},
{
"type": "null"
}
],
"title": "Condition",
"default": null,
"description": "With `market_language=fr`: this condition only (default: best of each day)."
},
"date_from": {
"anyOf": [
{
"type": "string",
"format": "date"
},
{
"type": "null"
}
],
"title": "Date From",
"default": null,
"description": "Defaults to the oldest day the plan allows."
},
"sealed_id": {
"anyOf": [
{
"type": "integer",
"maximum": 2147483647,
"minimum": 1
},
{
"type": "null"
}
],
"title": "Sealed Id",
"default": null,
"description": "Valo.Data sealed product id; or give `card_id`."
},
"market_language": {
"anyOf": [
{
"type": "string",
"const": "fr"
},
{
"type": "null"
}
],
"title": "Market Language",
"default": null,
"description": "Cards only: `fr` for the cheapest French Cardmarket offer of a French card (`source=cardmarket`, `variant=default`); only observed days are returned."
}
},
"additionalProperties": false
}get_sealed_pricesCurrent prices of one sealed product, each source in its native currency. 1 credit.
read-only
get_sealed_prices
Current prices of one sealed product, each source in its native currency. 1 credit.
| Argument | Type | Description |
|---|---|---|
| sealed_id* | integer | Valo.Data sealed product id. |
Input schema (JSON)
{
"type": "object",
"title": "SealedArguments",
"required": [
"sealed_id"
],
"properties": {
"sealed_id": {
"type": "integer",
"title": "Sealed Id",
"maximum": 2147483647,
"minimum": 1,
"description": "Valo.Data sealed product id."
}
},
"additionalProperties": false
}identify_cardIdentify a card from free text (name, number, edition, language in any order, typos tolerated): up to 5 candidates, best first, with the signals that matched. 1 credit.
read-only
identify_card
Identify a card from free text (name, number, edition, language in any order, typos tolerated): up to 5 candidates, best first, with the signals that matched. 1 credit.
| Argument | Type | Description |
|---|---|---|
| game | any | Game slug; every game when omitted. |
| query* | string | Name, number and edition in any order, e.g. "dracaufeu 199 151 fr", "OP05-119 luffy". |
| language | any | Only items printed in this language. |
Input schema (JSON)
{
"type": "object",
"title": "IdentifyCardArguments",
"required": [
"query"
],
"properties": {
"game": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Game",
"default": null,
"description": "Game slug; every game when omitted."
},
"query": {
"type": "string",
"title": "Query",
"maxLength": 120,
"minLength": 2,
"description": "Name, number and edition in any order, e.g. \"dracaufeu 199 151 fr\", \"OP05-119 luffy\"."
},
"language": {
"anyOf": [
{
"enum": [
"fr",
"en",
"ja",
"zh",
"de",
"es",
"it",
"pt"
],
"type": "string"
},
{
"type": "null"
}
],
"title": "Language",
"default": null,
"description": "Only items printed in this language."
}
},
"additionalProperties": false
}list_editionsEditions (sets) of a game, newest first, with their ids; `q` finds one by its name or set code. 1 credit per page.
read-only
list_editions
Editions (sets) of a game, newest first, with their ids; `q` finds one by its name or set code. 1 credit per page.
| Argument | Type | Description |
|---|---|---|
| q | any | Part of the edition name or its set code, accents and case ignored, e.g. `flammes`, `SV06`. |
| game* | string | Game slug from `list_games`, e.g. `pokemon`, `onepiece`, `lorcana`. |
| cursor | any | `next_cursor` of the previous page. |
| language | any | Only items printed in this language. |
| page_size | integer |
Input schema (JSON)
{
"type": "object",
"title": "ListEditionsArguments",
"required": [
"game"
],
"properties": {
"q": {
"anyOf": [
{
"type": "string",
"maxLength": 80,
"minLength": 2
},
{
"type": "null"
}
],
"title": "Q",
"default": null,
"description": "Part of the edition name or its set code, accents and case ignored, e.g. `flammes`, `SV06`."
},
"game": {
"type": "string",
"title": "Game",
"description": "Game slug from `list_games`, e.g. `pokemon`, `onepiece`, `lorcana`."
},
"cursor": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Cursor",
"default": null,
"description": "`next_cursor` of the previous page."
},
"language": {
"anyOf": [
{
"enum": [
"fr",
"en",
"ja",
"zh",
"de",
"es",
"it",
"pt"
],
"type": "string"
},
{
"type": "null"
}
],
"title": "Language",
"default": null,
"description": "Only items printed in this language."
},
"page_size": {
"type": "integer",
"title": "Page Size",
"default": 50,
"maximum": 100,
"minimum": 1
}
},
"additionalProperties": false
}list_gamesGames of the catalogue with their slugs, card languages and price coverage per source. 0 credit.
read-only
list_games
Games of the catalogue with their slugs, card languages and price coverage per source. 0 credit.
No arguments.
Input schema (JSON)
{
"type": "object",
"title": "NoArguments",
"properties": {},
"additionalProperties": false
}price_summaryThe price the ValoTCG app shows for a card or a sealed product, in EUR, with its source, reliability and 7, 30 and 90-day changes. 1 credit, +1 per include.
read-only
price_summary
The price the ValoTCG app shows for a card or a sealed product, in EUR, with its source, reliability and 7, 30 and 90-day changes. 1 credit, +1 per include.
| Argument | Type | Description |
|---|---|---|
| card_id | any | Valo.Data card id; or give `sealed_id`. |
| include | array | Cards only: `graded` (+1 credit), `population` (+1 credit, Starter plan and above). |
| sealed_id | any | Valo.Data sealed product id; or give `card_id`. |
Input schema (JSON)
{
"type": "object",
"title": "PriceSummaryArguments",
"properties": {
"card_id": {
"anyOf": [
{
"type": "integer",
"maximum": 2147483647,
"minimum": 1
},
{
"type": "null"
}
],
"title": "Card Id",
"default": null,
"description": "Valo.Data card id; or give `sealed_id`."
},
"include": {
"type": "array",
"items": {
"enum": [
"graded",
"population"
],
"type": "string"
},
"title": "Include",
"default": [],
"description": "Cards only: `graded` (+1 credit), `population` (+1 credit, Starter plan and above)."
},
"sealed_id": {
"anyOf": [
{
"type": "integer",
"maximum": 2147483647,
"minimum": 1
},
{
"type": "null"
}
],
"title": "Sealed Id",
"default": null,
"description": "Valo.Data sealed product id; or give `card_id`."
}
},
"additionalProperties": false
}scan_cardRecognise the card in a photo (Valo.Vision): up to 5 Valo.Data cards, best first; chain with price_summary for its price. 1 scan per analysed photo; a refused photo or an error costs nothing. Photos are processed in memory and never stored.
read-only
scan_card
Recognise the card in a photo (Valo.Vision): up to 5 Valo.Data cards, best first; chain with price_summary for its price. 1 scan per analysed photo; a refused photo or an error costs nothing. Photos are processed in memory and never stored.
| Argument | Type | Description |
|---|---|---|
| game* | string | Game of the card, e.g. `pokemon`. |
| image* | string | The photo, base64 encoded (a `data:image/…;base64,` URL is accepted): JPEG, PNG or WebP, at most 8 MB once decoded, shortest side at least 480 px. |
| language | any | Language of the card, used as a filter; every open language when omitted. |
Input schema (JSON)
{
"type": "object",
"title": "ScanCardArguments",
"required": [
"image",
"game"
],
"properties": {
"game": {
"type": "string",
"title": "Game",
"pattern": "^[a-z0-9_]{1,64}$",
"description": "Game of the card, e.g. `pokemon`."
},
"image": {
"type": "string",
"title": "Image",
"minLength": 1,
"description": "The photo, base64 encoded (a `data:image/…;base64,` URL is accepted): JPEG, PNG or WebP, at most 8 MB once decoded, shortest side at least 480 px."
},
"language": {
"anyOf": [
{
"enum": [
"fr",
"en",
"ja",
"zh",
"de",
"es",
"it",
"pt"
],
"type": "string"
},
{
"type": "null"
}
],
"title": "Language",
"default": null,
"description": "Language of the card, used as a filter; every open language when omitted."
}
},
"additionalProperties": false
}search_cardsSearch the cards of a game by name or number, edition, language or rarity. 1 credit per page.
read-only
search_cards
Search the cards of a game by name or number, edition, language or rarity. 1 credit per page.
| Argument | Type | Description |
|---|---|---|
| q | any | Name (FR/EN) or number. |
| game* | string | Game slug from `list_games`, e.g. `pokemon`, `onepiece`, `lorcana`. |
| cursor | any | `next_cursor` of the previous page. |
| rarity | any | Canonical rarity code (e.g. `holo_rare`) or the rarity label as printed (case-insensitive). |
| language | any | Only items printed in this language. |
| page_size | integer | |
| edition_id | any | Only this edition (`list_editions`). |
Input schema (JSON)
{
"type": "object",
"title": "SearchCardsArguments",
"required": [
"game"
],
"properties": {
"q": {
"anyOf": [
{
"type": "string",
"maxLength": 80,
"minLength": 2
},
{
"type": "null"
}
],
"title": "Q",
"default": null,
"description": "Name (FR/EN) or number."
},
"game": {
"type": "string",
"title": "Game",
"description": "Game slug from `list_games`, e.g. `pokemon`, `onepiece`, `lorcana`."
},
"cursor": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Cursor",
"default": null,
"description": "`next_cursor` of the previous page."
},
"rarity": {
"anyOf": [
{
"type": "string",
"maxLength": 100
},
{
"type": "null"
}
],
"title": "Rarity",
"default": null,
"description": "Canonical rarity code (e.g. `holo_rare`) or the rarity label as printed (case-insensitive)."
},
"language": {
"anyOf": [
{
"enum": [
"fr",
"en",
"ja",
"zh",
"de",
"es",
"it",
"pt"
],
"type": "string"
},
{
"type": "null"
}
],
"title": "Language",
"default": null,
"description": "Only items printed in this language."
},
"page_size": {
"type": "integer",
"title": "Page Size",
"default": 20,
"maximum": 100,
"minimum": 1
},
"edition_id": {
"anyOf": [
{
"type": "integer",
"maximum": 2147483647,
"minimum": 1
},
{
"type": "null"
}
],
"title": "Edition Id",
"default": null,
"description": "Only this edition (`list_editions`)."
}
},
"additionalProperties": false
}search_sealedSearch the sealed products of a game (boosters, displays, ETB…) by name, edition, type or language. 1 credit per page.
read-only
search_sealed
Search the sealed products of a game (boosters, displays, ETB…) by name, edition, type or language. 1 credit per page.
| Argument | Type | Description |
|---|---|---|
| q | any | Product name. |
| game* | string | Game slug from `list_games`, e.g. `pokemon`, `onepiece`, `lorcana`. |
| cursor | any | `next_cursor` of the previous page. |
| language | any | Only items printed in this language. |
| page_size | integer | |
| edition_id | any | Only this edition (`list_editions`). |
| product_type | any | e.g. booster, display, etb. |
Input schema (JSON)
{
"type": "object",
"title": "SearchSealedArguments",
"required": [
"game"
],
"properties": {
"q": {
"anyOf": [
{
"type": "string",
"maxLength": 80,
"minLength": 2
},
{
"type": "null"
}
],
"title": "Q",
"default": null,
"description": "Product name."
},
"game": {
"type": "string",
"title": "Game",
"description": "Game slug from `list_games`, e.g. `pokemon`, `onepiece`, `lorcana`."
},
"cursor": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Cursor",
"default": null,
"description": "`next_cursor` of the previous page."
},
"language": {
"anyOf": [
{
"enum": [
"fr",
"en",
"ja",
"zh",
"de",
"es",
"it",
"pt"
],
"type": "string"
},
{
"type": "null"
}
],
"title": "Language",
"default": null,
"description": "Only items printed in this language."
},
"page_size": {
"type": "integer",
"title": "Page Size",
"default": 20,
"maximum": 100,
"minimum": 1
},
"edition_id": {
"anyOf": [
{
"type": "integer",
"maximum": 2147483647,
"minimum": 1
},
{
"type": "null"
}
],
"title": "Edition Id",
"default": null,
"description": "Only this edition (`list_editions`)."
},
"product_type": {
"anyOf": [
{
"type": "string",
"maxLength": 50
},
{
"type": "null"
}
],
"title": "Product Type",
"default": null,
"description": "e.g. booster, display, etb."
}
},
"additionalProperties": false
}top_moversLargest price rises or falls of a game or an edition over 7, 30 or 90 days (cards of 10 EUR and more). 3 credits.
read-only
top_movers
Largest price rises or falls of a game or an edition over 7, 30 or 90 days (cards of 10 EUR and more). 3 credits.
| Argument | Type | Description |
|---|---|---|
| game* | string | Game slug from `list_games`, e.g. `pokemon`, `onepiece`, `lorcana`. |
| limit | integer | |
| period | integer | Period in days. |
| language | any | Only items printed in this language. |
| reliable | boolean | `true`: only the moves the recommended price backs (not of `low` confidence, the market of the move within x2 of it, a Cardmarket trend within x2 of its 30-day average, no market moving the other way, two markets for a price doubled or halved). |
| direction | string | `up`: rises, `down`: falls. |
| edition_id | any | Only this edition of the game. |
Input schema (JSON)
{
"type": "object",
"title": "TopMoversArguments",
"required": [
"game"
],
"properties": {
"game": {
"type": "string",
"title": "Game",
"description": "Game slug from `list_games`, e.g. `pokemon`, `onepiece`, `lorcana`."
},
"limit": {
"type": "integer",
"title": "Limit",
"default": 10,
"maximum": 25,
"minimum": 1
},
"period": {
"enum": [
7,
30,
90
],
"type": "integer",
"title": "Period",
"default": 30,
"description": "Period in days."
},
"language": {
"anyOf": [
{
"enum": [
"fr",
"en",
"ja",
"zh",
"de",
"es",
"it",
"pt"
],
"type": "string"
},
{
"type": "null"
}
],
"title": "Language",
"default": null,
"description": "Only items printed in this language."
},
"reliable": {
"type": "boolean",
"title": "Reliable",
"default": false,
"description": "`true`: only the moves the recommended price backs (not of `low` confidence, the market of the move within x2 of it, a Cardmarket trend within x2 of its 30-day average, no market moving the other way, two markets for a price doubled or halved)."
},
"direction": {
"enum": [
"up",
"down"
],
"type": "string",
"title": "Direction",
"default": "up",
"description": "`up`: rises, `down`: falls."
},
"edition_id": {
"anyOf": [
{
"type": "integer",
"maximum": 2147483647,
"minimum": 1
},
{
"type": "null"
}
],
"title": "Edition Id",
"default": null,
"description": "Only this edition of the game."
}
},
"additionalProperties": false
}top_pricedMost valuable cards or sealed products of a game, by the price the ValoTCG app shows (EUR): every edition and language, or one edition, one language, one sealed product type. 3 credits.
read-only
top_priced
Most valuable cards or sealed products of a game, by the price the ValoTCG app shows (EUR): every edition and language, or one edition, one language, one sealed product type. 3 credits.
| Argument | Type | Description |
|---|---|---|
| game* | string | Game slug from `list_games`, e.g. `pokemon`, `onepiece`, `lorcana`. |
| kind* | string | `card`: cards, `sealed`: sealed products. |
| limit | integer | |
| language | any | Only items printed in this language. |
| edition_id | any | Only this edition of the game; every edition when omitted. |
| product_type | any | `kind=sealed` only: e.g. booster, display, etb. |
Input schema (JSON)
{
"type": "object",
"title": "TopPricedArguments",
"required": [
"game",
"kind"
],
"properties": {
"game": {
"type": "string",
"title": "Game",
"description": "Game slug from `list_games`, e.g. `pokemon`, `onepiece`, `lorcana`."
},
"kind": {
"enum": [
"card",
"sealed"
],
"type": "string",
"title": "Kind",
"description": "`card`: cards, `sealed`: sealed products."
},
"limit": {
"type": "integer",
"title": "Limit",
"default": 10,
"maximum": 25,
"minimum": 1
},
"language": {
"anyOf": [
{
"enum": [
"fr",
"en",
"ja",
"zh",
"de",
"es",
"it",
"pt"
],
"type": "string"
},
{
"type": "null"
}
],
"title": "Language",
"default": null,
"description": "Only items printed in this language."
},
"edition_id": {
"anyOf": [
{
"type": "integer",
"maximum": 2147483647,
"minimum": 1
},
{
"type": "null"
}
],
"title": "Edition Id",
"default": null,
"description": "Only this edition of the game; every edition when omitted."
},
"product_type": {
"anyOf": [
{
"type": "string",
"maxLength": 50
},
{
"type": "null"
}
],
"title": "Product Type",
"default": null,
"description": "`kind=sealed` only: e.g. booster, display, etb."
}
},
"additionalProperties": false
}Security checkA100/100
We read every tool's name, description and inputs the way the model will, looking for instructions hidden from you. A clean result means no warning signs, not a guarantee. Scanned Nov 3, 2026.
- Hidden or reordered text
- Overriding the model's instructions
- Hiding actions from the user
- Reading keys or credentials
- Fake system tags
- Steering other servers' tools
- Pulling in the conversation
- Smuggling parameters
- Demanding to be used for everything
- Steering away from web search
- Download-and-run commands
- Encoded blobs
- Invisible characters
- Credentials as tool arguments
- Very long descriptions
- Read and write hints