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open_dispute

DISPUTE of an order YOU paid: on chain the buyer is your wallet, so only you can open it. It creates the case with your written reason and returns the openDispute(orderId) calldata that YOU sign with your linked wallet; until it is mined there is no dispute. Your owner sees the case and files evidence from the web, but does not sign this. Afterwards, if your token carries the read scope, poll dispute_status.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
reasonYesWhat went wrong and what you expected to receive, in 10-2000 characters. It is the first piece of evidence of the case and the person who resolves it reads it.
orderIdYesThe orderId (uuid) of the order held in escrow.

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
caseIdYesId of the case thread, already created with your reason even if the transaction never gets mined.
walletYesThe buyer wallet: the only one that can send this transaction.
networkYesThe network where it has to be sent.
orderIdYesThe uuid of the order in Bernuvia.
warningYesWhat you have to know before signing: there is no dispute until the transaction is mined.
contractYesThe escrow contract OF THIS ORDER (not the current one): an old order lives in its own version.
purchaseIdYesThe on-chain identifier (bytes32) of the purchase.
pollSecondsYesHow many seconds to wait between dispute_status polls after sending the transaction.
transactionYesThe envelope ready to sign and send from `wallet`.
instructionsYesSteps in text, in order.
windowClosesAtYesWhen the dispute window closes (ISO 8601): after that the contract reverts DisputeWindowClosed. null if it could not be determined.
caseAlreadyExistedYestrue if the thread was already open and no new one was created.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed29 schema fields changed
    • removedInput schema / allOf
      Removed value: -[
      -  {
      -    "anyOf": [
      -      {
      -        "required": [
      -          "orderId"
      -        ]
      -      },
      -      {
      -        "required": [
      -          "ordenId"
      -        ]
      -      }
      -    ]
      -  },
      -  {
      -    "anyOf": [
      -      {
      -        "required": [
      -          "reason"
      -        ]
      -      },
      -      {
      -        "required": [
      -          "motivo"
      -        ]
      -      }
      -    ]
      -  }
      -]
    • removedInput schema / properties / motivo
      Removed value: -{
      -  "deprecated": true,
      -  "description": "DEPRECATED alias of `reason`: it still works, but use `reason` (it will be removed in a future round, no date yet). What went wrong and what you expected to receive, in 10-2000 characters. It is the first piece of evidence of the case and the person who resolves it reads it.",
      -  "type": "string"
      -}
    • removedInput schema / properties / ordenId
      Removed value: -{
      -  "deprecated": true,
      -  "description": "DEPRECATED alias of `orderId`: it still works, but use `orderId` (it will be removed in a future round, no date yet). The ordenId (uuid) of the order held in escrow.",
      -  "type": "string"
      -}
    • changedInput schema / properties / orderId / description
      Previous value: -"The ordenId (uuid) of the order held in escrow."New value: +"The orderId (uuid) of the order held in escrow."
    • addedInput schema / required
      Added value: +[
      +  "orderId",
      +  "reason"
      +]
    • removedInput schema / x-bernuvia-aliases
      Removed value: -{
      -  "orderId": "ordenId",
      -  "reason": "motivo"
      -}
    • removedOutput schema / properties / advertencia
      Removed value: -{
      -  "description": "What you have to know before signing: there is no dispute until the transaction is mined.",
      -  "type": "string"
      -}
    • addedOutput schema / properties / caseAlreadyExisted
      Added value: +{
      +  "description": "true if the thread was already open and no new one was created.",
      +  "type": "boolean"
      +}
    • addedOutput schema / properties / caseId
      Added value: +{
      +  "description": "Id of the case thread, already created with your reason even if the transaction never gets mined.",
      +  "type": "string"
      +}
    • removedOutput schema / properties / casoId
      Removed value: -{
      -  "description": "Id of the case thread, already created with your motivo even if the transaction never gets mined.",
      -  "type": "string"
      -}
    • removedOutput schema / properties / casoYaExistia
      Removed value: -{
      -  "description": "true if the thread was already open and no new one was created.",
      -  "type": "boolean"
      -}
    • removedOutput schema / properties / compraId
      Removed value: -{
      -  "description": "The on-chain identifier (bytes32) of the purchase.",
      -  "type": "string"
      -}
    • addedOutput schema / properties / contract
      Added value: +{
      +  "additionalProperties": true,
      +  "description": "The escrow contract OF THIS ORDER (not the current one): an old order lives in its own version.",
      +  "properties": {
      +    "version": {
      +      "description": "Escrow version (1, 2, 3 or 31 = v3.1).",
      +      "type": "number"
      +    }
      +  },
      +  "required": [
      +    "version"
      +  ],
      +  "type": "object"
      +}
    • removedOutput schema / properties / contrato
      Removed value: -{
      -  "additionalProperties": true,
      -  "description": "The escrow contract OF THIS ORDER (not the current one): an old order lives in its own version.",
      -  "properties": {
      -    "version": {
      -      "description": "Escrow version (1, 2, 3 or 31 = v3.1).",
      -      "type": "number"
      -    }
      -  },
      -  "required": [
      -    "version"
      -  ],
      -  "type": "object"
      -}
    • removedOutput schema / properties / instrucciones
      Removed value: -{
      -  "description": "Steps in text, in order.",
      -  "items": {
      -    "type": "string"
      -  },
      -  "type": "array"
      -}
    • addedOutput schema / properties / instructions
      Added value: +{
      +  "description": "Steps in text, in order.",
      +  "items": {
      +    "type": "string"
      +  },
      +  "type": "array"
      +}
    • addedOutput schema / properties / network
      Added value: +{
      +  "additionalProperties": true,
      +  "description": "The network where it has to be sent.",
      +  "properties": {
      +    "chainId": {
      +      "description": "Chain id (137 = Polygon).",
      +      "type": "number"
      +    }
      +  },
      +  "required": [
      +    "chainId"
      +  ],
      +  "type": "object"
      +}
    • removedOutput schema / properties / ordenId
      Removed value: -{
      -  "description": "The uuid of the order in Bernuvia.",
      -  "type": "string"
      -}
    • addedOutput schema / properties / orderId
      Added value: +{
      +  "description": "The uuid of the order in Bernuvia.",
      +  "type": "string"
      +}
    • addedOutput schema / properties / pollSeconds
      Added value: +{
      +  "description": "How many seconds to wait between dispute_status polls after sending the transaction.",
      +  "type": "number"
      +}
    • addedOutput schema / properties / purchaseId
      Added value: +{
      +  "description": "The on-chain identifier (bytes32) of the purchase.",
      +  "type": "string"
      +}
    • removedOutput schema / properties / red
      Removed value: -{
      -  "additionalProperties": true,
      -  "description": "The network where it has to be sent.",
      -  "properties": {
      -    "chainId": {
      -      "description": "Chain id (137 = Polygon).",
      -      "type": "number"
      -    }
      -  },
      -  "required": [
      -    "chainId"
      -  ],
      -  "type": "object"
      -}
    • removedOutput schema / properties / sondeoSegundos
      Removed value: -{
      -  "description": "How many seconds to wait between dispute_status polls after sending the transaction.",
      -  "type": "number"
      -}
    • removedOutput schema / properties / transaccion
      Removed value: -{
      -  "additionalProperties": true,
      -  "description": "The envelope ready to sign and send from `wallet`.",
      -  "properties": {
      -    "calculadoEn": {
      -      "description": "When the fees were estimated (ISO 8601). Absent if they could not be estimated.",
      -      "type": "string"
      -    },
      -    "data": {
      -      "description": "Already encoded calldata (0x…).",
      -      "type": "string"
      -    },
      -    "descripcion": {
      -      "description": "What the transaction does and what the contract requires.",
      -      "type": "string"
      -    },
      -    "gasLimitSugerido": {
      -      "description": "Suggested gas limit in DECIMAL (string). Kept for compatibility.",
      -      "type": "string"
      -    },
      -    "gasLimitSugeridoHex": {
      -      "description": "The SAME limit in HEXADECIMAL with 0x: it is the one the JSON-RPC requires.",
      -      "type": "string"
      -    },
      -    "maxFeePerGasSugerido": {
      -      "description": "maxFeePerGas in wei, in DECIMAL (string). Absent if the fees could not be estimated.",
      -      "type": "string"
      -    },
      -    "maxFeePerGasSugeridoHex": {
      -      "description": "The SAME maxFeePerGas in HEXADECIMAL with 0x: what the JSON-RPC requires.",
      -      "type": "string"
      -    },
      -    "maxPriorityFeePerGasSugerido": {
      -      "description": "maxPriorityFeePerGas in wei, in DECIMAL (string). Absent if they could not be estimated.",
      -      "type": "string"
      -    },
      -    "maxPriorityFeePerGasSugeridoHex": {
      -      "description": "The SAME maxPriorityFeePerGas in HEXADECIMAL with 0x: what the JSON-RPC requires.",
      -      "type": "string"
      -    },
      -    "nombre": {
      -      "description": "Contract function: openDispute, cancelDispute or resolveDisputeByTimeout.",
      -      "type": "string"
      -    },
      -    "to": {
      -      "description": "Address of the escrow contract of this order.",
      -      "type": "string"
      -    },
      -    "value": {
      -      "description": "Native POL to send, in HEXADECIMAL with 0x (JSON-RPC QUANTITY): always \"0x0\".",
      -      "type": "string"
      -    }
      -  },
      -  "required": [
      -    "nombre",
      -    "to",
      -    "data",
      -    "value",
      -    "gasLimitSugerido",
      -    "gasLimitSugeridoHex",
      -    "descripcion"
      -  ],
      -  "type": "object"
      -}
    • addedOutput schema / properties / transaction
      Added value: +{
      +  "additionalProperties": true,
      +  "description": "The envelope ready to sign and send from `wallet`.",
      +  "properties": {
      +    "calculatedAt": {
      +      "description": "When the fees were estimated (ISO 8601). Absent if they could not be estimated.",
      +      "type": "string"
      +    },
      +    "data": {
      +      "description": "Already encoded calldata (0x…).",
      +      "type": "string"
      +    },
      +    "description": {
      +      "description": "What the transaction does and what the contract requires.",
      +      "type": "string"
      +    },
      +    "gasLimitSuggested": {
      +      "description": "Suggested gas limit in DECIMAL (string). Kept for compatibility.",
      +      "type": "string"
      +    },
      +    "gasLimitSuggestedHex": {
      +      "description": "The SAME limit in HEXADECIMAL with 0x: it is the one the JSON-RPC requires.",
      +      "type": "string"
      +    },
      +    "maxFeePerGasSuggested": {
      +      "description": "maxFeePerGas in wei, in DECIMAL (string). Absent if the fees could not be estimated.",
      +      "type": "string"
      +    },
      +    "maxFeePerGasSuggestedHex": {
      +      "description": "The SAME maxFeePerGas in HEXADECIMAL with 0x: what the JSON-RPC requires.",
      +      "type": "string"
      +    },
      +    "maxPriorityFeePerGasSuggested": {
      +      "description": "maxPriorityFeePerGas in wei, in DECIMAL (string). Absent if they could not be estimated.",
      +      "type": "string"
      +    },
      +    "maxPriorityFeePerGasSuggestedHex": {
      +      "description": "The SAME maxPriorityFeePerGas in HEXADECIMAL with 0x: what the JSON-RPC requires.",
      +      "type": "string"
      +    },
      +    "name": {
      +      "description": "Contract function: openDispute, cancelDispute or resolveDisputeByTimeout.",
      +      "type": "string"
      +    },
      +    "to": {
      +      "description": "Address of the escrow contract of this order.",
      +      "type": "string"
      +    },
      +    "value": {
      +      "description": "Native POL to send, in HEXADECIMAL with 0x (JSON-RPC QUANTITY): always \"0x0\".",
      +      "type": "string"
      +    }
      +  },
      +  "required": [
      +    "name",
      +    "to",
      +    "data",
      +    "value",
      +    "gasLimitSuggested",
      +    "gasLimitSuggestedHex",
      +    "description"
      +  ],
      +  "type": "object"
      +}
    • removedOutput schema / properties / ventanaCierraEn
      Removed value: -{
      -  "description": "When the dispute window closes (ISO 8601): after that the contract reverts DisputeWindowClosed. null if it could not be determined.",
      -  "type": [
      -    "string",
      -    "null"
      -  ]
      -}
    • addedOutput schema / properties / warning
      Added value: +{
      +  "description": "What you have to know before signing: there is no dispute until the transaction is mined.",
      +  "type": "string"
      +}
    • addedOutput schema / properties / windowClosesAt
      Added value: +{
      +  "description": "When the dispute window closes (ISO 8601): after that the contract reverts DisputeWindowClosed. null if it could not be determined.",
      +  "type": [
      +    "string",
      +    "null"
      +  ]
      +}
    • changedOutput schema / required
      Previous value: -[
      -  "ordenId",
      -  "compraId",
      -  "wallet",
      -  "red",
      -  "contrato",
      -  "transaccion",
      -  "casoId",
      -  "casoYaExistia",
      -  "ventanaCierraEn",
      -  "sondeoSegundos",
      -  "advertencia",
      -  "instrucciones"
      -]New value: +[
      +  "orderId",
      +  "purchaseId",
      +  "wallet",
      +  "network",
      +  "contract",
      +  "transaction",
      +  "caseId",
      +  "caseAlreadyExisted",
      +  "windowClosesAt",
      +  "pollSeconds",
      +  "warning",
      +  "instructions"
      +]
  2. Changed30 schema fields changed
    • changedInput schema / properties / motivo / description
      Previous value: -"ALIAS RETIRADO de `reason`: sigue funcionando, pero usa `reason` (se quitará en una tanda futura, aún sin fecha). / DEPRECATED alias of `reason`. Qué falló y qué esperabas recibir, en 10-2000 caracteres. Es la primera prueba del caso y la lee la persona que resuelve."New value: +"DEPRECATED alias of `reason`: it still works, but use `reason` (it will be removed in a future round, no date yet). What went wrong and what you expected to receive, in 10-2000 characters. It is the first piece of evidence of the case and the person who resolves it reads it."
    • changedInput schema / properties / ordenId / description
      Previous value: -"ALIAS RETIRADO de `orderId`: sigue funcionando, pero usa `orderId` (se quitará en una tanda futura, aún sin fecha). / DEPRECATED alias of `orderId`. El ordenId (uuid) de la orden en custodia."New value: +"DEPRECATED alias of `orderId`: it still works, but use `orderId` (it will be removed in a future round, no date yet). The ordenId (uuid) of the order held in escrow."
    • changedInput schema / properties / orderId / description
      Previous value: -"El ordenId (uuid) de la orden en custodia."New value: +"The ordenId (uuid) of the order held in escrow."
    • changedInput schema / properties / reason / description
      Previous value: -"Qué falló y qué esperabas recibir, en 10-2000 caracteres. Es la primera prueba del caso y la lee la persona que resuelve."New value: +"What went wrong and what you expected to receive, in 10-2000 characters. It is the first piece of evidence of the case and the person who resolves it reads it."
    • changedOutput schema / properties / advertencia / description
      Previous value: -"Lo que hay que saber antes de firmar: no hay disputa hasta que la transacción se mine."New value: +"What you have to know before signing: there is no dispute until the transaction is mined."
    • changedOutput schema / properties / casoId / description
      Previous value: -"Id del hilo del caso, ya creado con tu motivo aunque la transacción no llegue a minarse."New value: +"Id of the case thread, already created with your motivo even if the transaction never gets mined."
    • changedOutput schema / properties / casoYaExistia / description
      Previous value: -"true si el hilo ya estaba abierto y no se creó uno nuevo."New value: +"true if the thread was already open and no new one was created."
    • changedOutput schema / properties / compraId / description
      Previous value: -"El identificador on-chain (bytes32) de la compra."New value: +"The on-chain identifier (bytes32) of the purchase."
    • changedOutput schema / properties / contrato / description
      Previous value: -"El contrato de custodia DE ESTA ORDEN (no el vigente): una orden antigua vive en su versión."New value: +"The escrow contract OF THIS ORDER (not the current one): an old order lives in its own version."
    • changedOutput schema / properties / contrato / properties / version / description
      Previous value: -"Versión del escrow (1, 2, 3 o 31 = v3.1)."New value: +"Escrow version (1, 2, 3 or 31 = v3.1)."
    • changedOutput schema / properties / instrucciones / description
      Previous value: -"Pasos en texto, en orden."New value: +"Steps in text, in order."
    • changedOutput schema / properties / ordenId / description
      Previous value: -"El uuid de la orden en Bernuvia."New value: +"The uuid of the order in Bernuvia."
    • changedOutput schema / properties / red / description
      Previous value: -"La red donde hay que enviarla."New value: +"The network where it has to be sent."
    • changedOutput schema / properties / red / properties / chainId / description
      Previous value: -"Id de la cadena (137 = Polygon)."New value: +"Chain id (137 = Polygon)."
    • changedOutput schema / properties / sondeoSegundos / description
      Previous value: -"Cada cuántos segundos sondear dispute_status tras enviar la transacción."New value: +"How many seconds to wait between dispute_status polls after sending the transaction."
    • changedOutput schema / properties / transaccion / description
      Previous value: -"El sobre listo para firmar y enviar desde `wallet`."New value: +"The envelope ready to sign and send from `wallet`."
    • changedOutput schema / properties / transaccion / properties / calculadoEn / description
      Previous value: -"Cuándo se estimaron las tarifas (ISO 8601). Ausente si no se pudieron estimar."New value: +"When the fees were estimated (ISO 8601). Absent if they could not be estimated."
    • changedOutput schema / properties / transaccion / properties / data / description
      Previous value: -"Calldata ya codificado (0x…)."New value: +"Already encoded calldata (0x…)."
    • changedOutput schema / properties / transaccion / properties / descripcion / description
      Previous value: -"Qué hace la transacción y qué exige el contrato."New value: +"What the transaction does and what the contract requires."
    • changedOutput schema / properties / transaccion / properties / gasLimitSugerido / description
      Previous value: -"Límite de gas sugerido en DECIMAL (cadena). Se conserva por compatibilidad."New value: +"Suggested gas limit in DECIMAL (string). Kept for compatibility."
    • changedOutput schema / properties / transaccion / properties / gasLimitSugeridoHex / description
      Previous value: -"El MISMO límite en HEXADECIMAL con 0x: es el que exige el JSON-RPC."New value: +"The SAME limit in HEXADECIMAL with 0x: it is the one the JSON-RPC requires."
    • changedOutput schema / properties / transaccion / properties / maxFeePerGasSugerido / description
      Previous value: -"maxFeePerGas en wei, en DECIMAL (cadena). Ausente si no se pudieron estimar las tarifas."New value: +"maxFeePerGas in wei, in DECIMAL (string). Absent if the fees could not be estimated."
    • changedOutput schema / properties / transaccion / properties / maxFeePerGasSugeridoHex / description
      Previous value: -"El MISMO maxFeePerGas en HEXADECIMAL con 0x: lo que exige el JSON-RPC."New value: +"The SAME maxFeePerGas in HEXADECIMAL with 0x: what the JSON-RPC requires."
    • changedOutput schema / properties / transaccion / properties / maxPriorityFeePerGasSugerido / description
      Previous value: -"maxPriorityFeePerGas en wei, en DECIMAL (cadena). Ausente si no se pudieron estimar."New value: +"maxPriorityFeePerGas in wei, in DECIMAL (string). Absent if they could not be estimated."
    • changedOutput schema / properties / transaccion / properties / maxPriorityFeePerGasSugeridoHex / description
      Previous value: -"El MISMO maxPriorityFeePerGas en HEXADECIMAL con 0x: lo que exige el JSON-RPC."New value: +"The SAME maxPriorityFeePerGas in HEXADECIMAL with 0x: what the JSON-RPC requires."
    • changedOutput schema / properties / transaccion / properties / nombre / description
      Previous value: -"Función del contrato: openDispute, cancelDispute o resolveDisputeByTimeout."New value: +"Contract function: openDispute, cancelDispute or resolveDisputeByTimeout."
    • changedOutput schema / properties / transaccion / properties / to / description
      Previous value: -"Dirección del contrato de custodia de esta orden."New value: +"Address of the escrow contract of this order."
    • changedOutput schema / properties / transaccion / properties / value / description
      Previous value: -"POL nativo a enviar, en HEXADECIMAL con 0x (QUANTITY del JSON-RPC): siempre \"0x0\"."New value: +"Native POL to send, in HEXADECIMAL with 0x (JSON-RPC QUANTITY): always \"0x0\"."
    • changedOutput schema / properties / ventanaCierraEn / description
      Previous value: -"Cuándo se cierra la ventana de disputa (ISO 8601): después el contrato revierte DisputeWindowClosed. null si no se pudo determinar."New value: +"When the dispute window closes (ISO 8601): after that the contract reverts DisputeWindowClosed. null if it could not be determined."
    • changedOutput schema / properties / wallet / description
      Previous value: -"La wallet compradora: la única que puede enviar esta transacción."New value: +"The buyer wallet: the only one that can send this transaction."
  3. First observed

TDQS

A4.3/5.0
Behavior5/5

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

With no annotations, the description carries the full burden and does so well: it discloses that no dispute exists until the returned calldata is signed and mined, that the agent must sign with its linked wallet, that the owner files evidence separately, and that polling dispute_status requires a read scope.

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?

It is a single dense but front-loaded paragraph where each clause adds a distinct behavioral fact (buyer-only, signed calldata, not yet mined, owner files evidence, poll status). It could be broken into shorter units for scanability but contains no filler.

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

Completeness4/5

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

Given an output schema exists, the description need not detail return values, and it instead focuses on the signing workflow and follow-up status polling, which is the right emphasis. It is largely complete for a two-parameter mutation 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%, so the schema already documents both orderId (uuid escrow order) and reason (10-2000 chars, first evidence). The description reinforces that reason is the written case statement but adds no syntax or format detail beyond the schema.

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

Purpose5/5

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

It states a specific verb (open a dispute) on a specific resource (an order YOU paid), and clarifies the on-chain identity of the buyer. This cleanly distinguishes it from adjacent siblings such as dispute_status, withdraw_dispute, and close_expired_dispute.

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?

It gives a clear precondition (only the buyer of the order can open it) and routes the agent to dispute_status for follow-up. It does not, however, contrast this with alternatives like withdraw_dispute or close_expired_dispute, so the when-not case is left implicit.

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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