feat: add retry, health command, output controls, and 429 exit code (DIS-136)

src/cli.ts

@@ -4,14 +4,15 @@ import {
   accountsCommand,
   collectionsCommand,
   eventsCommand,
+  healthCommand,
   listingsCommand,
   nftsCommand,
   offersCommand,
   searchCommand,
   swapsCommand,
   tokensCommand,
 } from "./commands/index.js"
-import type { OutputFormat } from "./output.js"
+import type { OutputFilterOptions, OutputFormat } from "./output.js"
 import { parseIntOption } from "./parse.js"
 
 const EXIT_API_ERROR = 1
@@ -41,14 +42,21 @@ program
   .option("--format <format>", "Output format (json, table, or toon)", "json")
   .option("--base-url <url>", "API base URL")
   .option("--timeout <ms>", "Request timeout in milliseconds", "30000")
+  .option("--retries <n>", "Max retries on 429/5xx errors", "3")
   .option("--verbose", "Log request and response info to stderr")
+  .option(
+    "--fields <fields>",
+    "Comma-separated list of fields to include in output",
+  )
+  .option("--max-items <n>", "Truncate array output to first N items")
 
 function getClient(): OpenSeaClient {
   const opts = program.opts<{
     apiKey?: string
     chain: string
     baseUrl?: string
     timeout: string
+    retries: string
     verbose?: boolean
   }>()
 
@@ -65,6 +73,7 @@ function getClient(): OpenSeaClient {
     chain: opts.chain,
     baseUrl: opts.baseUrl,
     timeout: parseIntOption(opts.timeout, "--timeout"),
+    retries: parseIntOption(opts.retries, "--retries"),
     verbose: opts.verbose,
   })
 }
@@ -76,15 +85,32 @@ function getFormat(): OutputFormat {
   return "json"
 }
 
-program.addCommand(collectionsCommand(getClient, getFormat))
-program.addCommand(nftsCommand(getClient, getFormat))
-program.addCommand(listingsCommand(getClient, getFormat))
-program.addCommand(offersCommand(getClient, getFormat))
-program.addCommand(eventsCommand(getClient, getFormat))
-program.addCommand(accountsCommand(getClient, getFormat))
-program.addCommand(tokensCommand(getClient, getFormat))
-program.addCommand(searchCommand(getClient, getFormat))
-program.addCommand(swapsCommand(getClient, getFormat))
+function getFilters(): OutputFilterOptions {
+  const opts = program.opts<{
+    fields?: string
+    maxItems?: string
+  }>()
+  return {
+    fields: opts.fields
+      ?.split(",")
+      .map(f => f.trim())
+      .filter(Boolean),
+    maxItems: opts.maxItems
+      ? parseIntOption(opts.maxItems, "--max-items")
+      : undefined,
+  }
+}
+
+program.addCommand(collectionsCommand(getClient, getFormat, getFilters))
+program.addCommand(nftsCommand(getClient, getFormat, getFilters))
+program.addCommand(listingsCommand(getClient, getFormat, getFilters))
+program.addCommand(offersCommand(getClient, getFormat, getFilters))
+program.addCommand(eventsCommand(getClient, getFormat, getFilters))
+program.addCommand(accountsCommand(getClient, getFormat, getFilters))
+program.addCommand(tokensCommand(getClient, getFormat, getFilters))
+program.addCommand(searchCommand(getClient, getFormat, getFilters))
+program.addCommand(swapsCommand(getClient, getFormat, getFilters))
+program.addCommand(healthCommand(getClient))
 
 async function main() {
   try {

src/client.ts

@@ -4,21 +4,37 @@ declare const __VERSION__: string
 
 const DEFAULT_BASE_URL = "https://api.opensea.io"
 const DEFAULT_TIMEOUT_MS = 30_000
+const DEFAULT_RETRIES = 3
 const USER_AGENT = `opensea-cli/${__VERSION__}`
 
+function isRetryable(status: number): boolean {
+  return status === 429 || status >= 500
+}
+
+function retryDelay(attempt: number, retryAfter?: string): number {
+  if (retryAfter) {
+    const seconds = Number.parseFloat(retryAfter)
+    if (!Number.isNaN(seconds)) return seconds * 1000
+  }
+  const base = Math.min(1000 * 2 ** attempt, 30_000)
+  return base + Math.random() * base * 0.5
+}
+
 export class OpenSeaClient {
   private apiKey: string
   private baseUrl: string
   private defaultChain: string
   private timeoutMs: number
   private verbose: boolean
+  private retries: number
 
   constructor(config: OpenSeaClientConfig) {
     this.apiKey = config.apiKey
     this.baseUrl = config.baseUrl ?? DEFAULT_BASE_URL
     this.defaultChain = config.chain ?? "ethereum"
     this.timeoutMs = config.timeout ?? DEFAULT_TIMEOUT_MS
     this.verbose = config.verbose ?? false
+    this.retries = config.retries ?? DEFAULT_RETRIES
   }
 
   private get defaultHeaders(): Record<string, string> {
@@ -40,26 +56,14 @@ export class OpenSeaClient {
       }
     }
 
-    if (this.verbose) {
-      console.error(`[verbose] GET ${url.toString()}`)
-    }
-
-    const response = await fetch(url.toString(), {
-      method: "GET",
-      headers: this.defaultHeaders,
-      signal: AbortSignal.timeout(this.timeoutMs),
-    })
-
-    if (this.verbose) {
-      console.error(`[verbose] ${response.status} ${response.statusText}`)
-    }
-
-    if (!response.ok) {
-      const body = await response.text()
-      throw new OpenSeaAPIError(response.status, body, path)
-    }
-
-    return response.json() as Promise<T>
+    return this.fetchWithRetry<T>(
+      url,
+      {
+        method: "GET",
+        headers: this.defaultHeaders,
+      },
+      path,
+    )
   }
 
   async post<T>(
@@ -83,31 +87,71 @@ export class OpenSeaClient {
       headers["Content-Type"] = "application/json"
     }
 
-    if (this.verbose) {
-      console.error(`[verbose] POST ${url.toString()}`)
-    }
+    return this.fetchWithRetry<T>(
+      url,
+      {
+        method: "POST",
+        headers,
+        body: body ? JSON.stringify(body) : undefined,
+      },
+      path,
+    )
+  }
+
+  getDefaultChain(): string {
+    return this.defaultChain
+  }
 
-    const response = await fetch(url.toString(), {
-      method: "POST",
-      headers,
-      body: body ? JSON.stringify(body) : undefined,
-      signal: AbortSignal.timeout(this.timeoutMs),
-    })
+  private async fetchWithRetry<T>(
+    url: URL,
+    init: RequestInit,
+    path: string,
+  ): Promise<T> {
+    let lastError: OpenSeaAPIError | undefined
+
+    for (let attempt = 0; attempt <= this.retries; attempt++) {
+      if (attempt > 0 && lastError) {
+        const delay = retryDelay(attempt - 1, lastError.retryAfter)
+        if (this.verbose) {
+          console.error(
+            `[verbose] retry ${attempt}/${this.retries}` +
+              ` after ${Math.round(delay)}ms`,
+          )
+        }
+        await new Promise(resolve => setTimeout(resolve, delay))
+      }
 
-    if (this.verbose) {
-      console.error(`[verbose] ${response.status} ${response.statusText}`)
-    }
+      if (this.verbose) {
+        console.error(`[verbose] ${init.method} ${url.toString()}`)
+      }
 
-    if (!response.ok) {
-      const text = await response.text()
-      throw new OpenSeaAPIError(response.status, text, path)
-    }
+      const response = await fetch(url.toString(), {
+        ...init,
+        signal: AbortSignal.timeout(this.timeoutMs),
+      })
 
-    return response.json() as Promise<T>
-  }
+      if (this.verbose) {
+        console.error(`[verbose] ${response.status} ${response.statusText}`)
+      }
 
-  getDefaultChain(): string {
-    return this.defaultChain
+      if (response.ok) {
+        return response.json() as Promise<T>
+      }
+
+      const body = await response.text()
+      lastError = new OpenSeaAPIError(
+        response.status,
+        body,
+        path,
+        response.headers.get("retry-after") ?? undefined,
+      )
+
+      if (!isRetryable(response.status) || attempt === this.retries) {
+        throw lastError
+      }
+    }
+
+    throw lastError!
   }
 }
 
@@ -116,6 +160,7 @@ export class OpenSeaAPIError extends Error {
     public statusCode: number,
     public responseBody: string,
     public path: string,
+    public retryAfter?: string,
   ) {
     super(`OpenSea API error ${statusCode} on ${path}: ${responseBody}`)
     this.name = "OpenSeaAPIError"

src/commands/accounts.ts

@@ -1,12 +1,13 @@
 import { Command } from "commander"
 import type { OpenSeaClient } from "../client.js"
-import type { OutputFormat } from "../output.js"
+import type { OutputFilterOptions, OutputFormat } from "../output.js"
 import { formatOutput } from "../output.js"
 import type { Account } from "../types/index.js"
 
 export function accountsCommand(
   getClient: () => OpenSeaClient,
   getFormat: () => OutputFormat,
+  getFilters?: () => OutputFilterOptions,
 ): Command {
   const cmd = new Command("accounts").description("Query accounts")
 
@@ -17,7 +18,7 @@ export function accountsCommand(
     .action(async (address: string) => {
       const client = getClient()
       const result = await client.get<Account>(`/api/v2/accounts/${address}`)
-      console.log(formatOutput(result, getFormat()))
+      console.log(formatOutput(result, getFormat(), getFilters?.()))
     })
 
   return cmd

src/commands/collections.ts

@@ -1,6 +1,6 @@
 import { Command } from "commander"
 import type { OpenSeaClient } from "../client.js"
-import type { OutputFormat } from "../output.js"
+import type { OutputFilterOptions, OutputFormat } from "../output.js"
 import { formatOutput } from "../output.js"
 import { parseIntOption } from "../parse.js"
 import type {
@@ -14,6 +14,7 @@ import type {
 export function collectionsCommand(
   getClient: () => OpenSeaClient,
   getFormat: () => OutputFormat,
+  getFilters?: () => OutputFilterOptions,
 ): Command {
   const cmd = new Command("collections").description(
     "Manage and query NFT collections",
@@ -26,7 +27,7 @@ export function collectionsCommand(
     .action(async (slug: string) => {
       const client = getClient()
       const result = await client.get<Collection>(`/api/v2/collections/${slug}`)
-      console.log(formatOutput(result, getFormat()))
+      console.log(formatOutput(result, getFormat(), getFilters?.()))
     })
 
   cmd
@@ -62,7 +63,7 @@ export function collectionsCommand(
           limit: parseIntOption(options.limit, "--limit"),
           next: options.next,
         })
-        console.log(formatOutput(result, getFormat()))
+        console.log(formatOutput(result, getFormat(), getFilters?.()))
       },
     )
 
@@ -75,7 +76,7 @@ export function collectionsCommand(
       const result = await client.get<CollectionStats>(
         `/api/v2/collections/${slug}/stats`,
       )
-      console.log(formatOutput(result, getFormat()))
+      console.log(formatOutput(result, getFormat(), getFilters?.()))
     })
 
   cmd
@@ -87,7 +88,7 @@ export function collectionsCommand(
       const result = await client.get<GetTraitsResponse>(
         `/api/v2/traits/${slug}`,
       )
-      console.log(formatOutput(result, getFormat()))
+      console.log(formatOutput(result, getFormat(), getFilters?.()))
     })
 
   return cmd

src/commands/events.ts

@@ -1,13 +1,14 @@
 import { Command } from "commander"
 import type { OpenSeaClient } from "../client.js"
-import type { OutputFormat } from "../output.js"
+import type { OutputFilterOptions, OutputFormat } from "../output.js"
 import { formatOutput } from "../output.js"
 import { parseIntOption } from "../parse.js"
 import type { AssetEvent } from "../types/index.js"
 
 export function eventsCommand(
   getClient: () => OpenSeaClient,
   getFormat: () => OutputFormat,
+  getFilters?: () => OutputFilterOptions,
 ): Command {
   const cmd = new Command("events").description("Query marketplace events")
 
@@ -48,7 +49,7 @@ export function eventsCommand(
           limit: parseIntOption(options.limit, "--limit"),
           next: options.next,
         })
-        console.log(formatOutput(result, getFormat()))
+        console.log(formatOutput(result, getFormat(), getFilters?.()))
       },
     )
 
@@ -80,7 +81,7 @@ export function eventsCommand(
           limit: parseIntOption(options.limit, "--limit"),
           next: options.next,
         })
-        console.log(formatOutput(result, getFormat()))
+        console.log(formatOutput(result, getFormat(), getFilters?.()))
       },
     )
 
@@ -109,7 +110,7 @@ export function eventsCommand(
           limit: parseIntOption(options.limit, "--limit"),
           next: options.next,
         })
-        console.log(formatOutput(result, getFormat()))
+        console.log(formatOutput(result, getFormat(), getFilters?.()))
       },
     )
 
@@ -145,7 +146,7 @@ export function eventsCommand(
             next: options.next,
           },
         )
-        console.log(formatOutput(result, getFormat()))
+        console.log(formatOutput(result, getFormat(), getFilters?.()))
       },
     )