moeru-ai/airi · error · Error

Identifier "{name}" is used more than once — names need to b

Error message

Identifier "{name}" is used more than once — names need to be unique.

What it means

Thrown by buildConfigFile when a server identifier already exists in seenIdentifiers — two rows share the same trimmed name. The ElectronMcpStdioConfigFile.mcpServers is a keyed object, so duplicate keys would silently overwrite; this guard prevents that data loss.

Source

Thrown at apps/stage-tamagotchi/src/renderer/pages/settings/modules/mcp-config.ts:99

  return config
}

/** Builds the persisted MCP config file from editable rows. */
export function buildConfigFile(
  servers: ServerForm[],
  translateMessage: TranslateMcpMessage,
): ElectronMcpStdioConfigFile {
  const config: ElectronMcpStdioConfigFile = { mcpServers: {} }
  const seenIdentifiers = new Set<string>()

  for (const [index, server] of servers.entries()) {
    const identifier = server.identifier.trim()
    if (!identifier)
      throw new Error(translateMessage('errors.empty-identifier', { index: index + 1 }))

    if (seenIdentifiers.has(identifier))
      throw new Error(translateMessage('errors.duplicate-identifier', { name: identifier }))

    if (!server.command.trim())
      throw new Error(translateMessage('errors.empty-command', { name: identifier }))

    seenIdentifiers.add(identifier)
    config.mcpServers[identifier] = buildServerConfig(server)
  }

  return config
}

/** Builds the JSON editor draft while preserving the current draft when form validation fails. */
export function syncJsonDraftFromServers(
  servers: ServerForm[],
  previousDraft: string,
  translateMessage: TranslateMcpMessage,
  formatError: (error: unknown) => string,
) {

View on GitHub (pinned to 27111382b4)

Solutions

1. Rename one of the colliding server rows to a unique identifier.
2. If the duplicate is unintended, delete the extra row.
3. Add live duplicate detection in the form (highlight duplicate identifiers before save).

function hasDuplicateIdentifiers(servers: ServerForm[]): boolean {
  const ids = servers.map(s => s.identifier.trim()).filter(Boolean)
  return new Set(ids).size !== ids.length
}

function areIdentifiersUnique(servers: ServerForm[]): boolean {
  const seen = new Set<string>()
  for (const s of servers) {
    const id = s.identifier.trim()
    if (!id) continue
    if (seen.has(id)) return false
    seen.add(id)
  }
  return true
}

try {
  buildConfigFile(servers, t)
} catch (e) {
  // highlight duplicate rows in the form
}

When it happens

Trigger: User entered the same identifier on two server rows (e.g. two 'filesystem' entries); pasted a config JSON that listed one server twice; rename left two rows colliding.

Common situations: Copy-pasting a server row without renaming; importing a hand-edited JSON with duplicate keys; merging two configs that share a server name.

Related errors

• Server # {index} is missing an identifier.
• errors.empty-command
• Invalid remote debug port: ${env.APP_REMOTE_DEBUG_PORT}
• No reachable private LAN address is available for the curren
• Failed to apply server channel configuration

AI-assisted analysis of moeru-ai/airi@27111382b4 (2026-08-12). Data as JSON: /api/errors/a3c85bc3ee7c50f2. Report an issue: GitHub.