apollo-rate-limits

Implement Apollo.io rate limiting and backoff. Use when handling rate limits, implementing retry logic, or optimizing API request throughput. Trigger with phrases like "apollo rate limit", "apollo 429", "apollo throttling", "apollo backoff", "apollo request limits".

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Repository: jeremylongshore/claude-code-plugins-plus-skills
Letzte Quellaktivität: 17. Juli 2026 um 22:18
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name	apollo-rate-limits
description	Implement Apollo.io rate limiting and backoff. Use when handling rate limits, implementing retry logic, or optimizing API request throughput. Trigger with phrases like "apollo rate limit", "apollo 429", "apollo throttling", "apollo backoff", "apollo request limits".
allowed-tools	Read, Grep, Bash(curl:*)
version	1.13.0
license	MIT
author	Jeremy Longshore <jeremy@intentsolutions.io>
tags	["saas","apollo","api"]
compatibility	Designed for Claude Code, also compatible with Codex and OpenClaw

Apollo Rate Limits

Overview

Implement robust rate limiting and backoff for the Apollo.io API. Apollo uses fixed-window rate limiting with per-endpoint limits. Unlike hourly quotas, Apollo limits are per minute with a burst limit per second. Exceeding them returns HTTP 429.

Prerequisites

Valid Apollo API key
Node.js 18+

Instructions

Step 1: Understand Apollo's Rate Limit Structure

Apollo's official rate limits (as of 2025):

Endpoint Category           | Limit/min | Burst/sec | Notes
----------------------------+-----------+-----------+-------------------------------
People Search               | 100       | 10        | /mixed_people/api_search (free)
People Enrichment           | 100       | 10        | /people/match (1 credit each)
Bulk People Enrichment      | 10        | 2         | /people/bulk_match (up to 10/call)
Organization Search         | 100       | 10        | /mixed_companies/search
Organization Enrichment     | 100       | 10        | /organizations/enrich
Contacts CRUD               | 100       | 10        | /contacts/*
Sequences                   | 100       | 10        | /emailer_campaigns/*
Deals                       | 100       | 10        | /opportunities/*

Response headers on every successful call:

x-rate-limit-limit — max requests per window
x-rate-limit-remaining — requests remaining in current window
retry-after — seconds to wait (only on 429 responses)

Step 2: Build a Per-Endpoint Rate Limiter

// src/apollo/rate-limiter.ts
export class SlidingWindowLimiter {
  private timestamps: number[] = [];

  constructor(
    private maxRequests: number = 100,
    private windowMs: number = 60_000,
  ) {}

  async acquire(): Promise<> {
     now = .();
    
    . = ..( now - t < .);

     (.. >= .) {
       oldestInWindow = .[];
       waitMs = . - (now - oldestInWindow) + ;
      .();
        ( (r, waitMs));
    }

    ..(.());
  }

   ():  {
     now = .();
    . = ..( now - t < .);
     . - ..;
  }
}


  limiters = {
  :  (, ),
  :  (, ),
  :  (, ),
  :  (, ),
  :  (, ),
};

// src/apollo/backoff.ts
export async function withBackoff<T>(
  fn: () => Promise<T>,
  opts: { maxRetries?: number; baseMs?: number; maxMs?: number } = {},
): Promise<T> {
  const { maxRetries = 5, baseMs = 1000, maxMs = 60_000 } = opts;

  for (let attempt = 0; attempt <= maxRetries; attempt++) {
    try {
      return await fn();
    } catch (err: any) {
      const status = err.response?.status;
      if (status !== 429 && status < 500) throw err;
      if (attempt === maxRetries) throw err;

      // Prefer Retry-After header, fall back to exponential backoff
      const retryAfter = err.response?.headers?.['retry-after'];
      const delayMs = retryAfter
        ? parseInt(retryAfter, 10) * 1000
        : Math.min(baseMs * 2 ** attempt + Math.random() * 500, maxMs);

      console.warn(`[Apollo] ${status} attempt ${attempt + 1}/${maxRetries + 1}, retry in ${Math.round(delayMs / 1000)}s`);
      await new Promise((r) => setTimeout(r, delayMs));
    }
  }
  throw new Error('Unreachable');
}

// src/apollo/queue.ts
import PQueue from 'p-queue';
import { limiters } from './rate-limiter';

type EndpointCategory = keyof typeof limiters;

const queues: Record<EndpointCategory, PQueue> = {
  search: new PQueue({ concurrency: 5, intervalCap: 10, interval: 1000 }),
  enrichment: new PQueue({ concurrency: 5, intervalCap: 10, interval: 1000 }),
  bulkEnrichment: new PQueue({ concurrency: 2, intervalCap: 2, interval: 1000 }),
  contacts: new PQueue({ concurrency: 5, intervalCap: 10, interval: 1000 }),
  sequences: new PQueue({ concurrency: 3, intervalCap: 5, interval: 1000 }),
};

export async function queuedRequest<T>(
  category: EndpointCategory,
  fn: () => Promise<T>,
): Promise<T> {
  await limiters[category].acquire();
  return queues[category].add(() => fn()) as Promise<T>;
}

// src/apollo/rate-monitor.ts
import { AxiosInstance, AxiosResponse } from 'axios';

export function attachRateMonitor(client: AxiosInstance) {
  client.interceptors.response.use((response: AxiosResponse) => {
    const limit = response.headers['x-rate-limit-limit'];
    const remaining = response.headers['x-rate-limit-remaining'];

    if (limit && remaining) {
      const pct = Math.round(((parseInt(limit) - parseInt(remaining)) / parseInt(limit)) * 100);
      if (pct >= 80) {
        console.warn(`[Apollo] Rate limit ${pct}% used (${remaining}/${limit} remaining) on ${response.config.url}`);
      }
    }
    return response;
  });
}

Scenario	Strategy
429 with `retry-after`	Wait the specified seconds, then retry
429 without header	Exponential backoff: 1s, 2s, 4s, 8s, up to 60s
Bulk enrichment limited	Use dedicated queue with 2/sec burst limit
Near quota (>80%)	Log warning, defer non-critical requests

import { queuedRequest } from './apollo/queue';
import { withBackoff } from './apollo/backoff';

const domains = ['stripe.com', 'notion.so', 'linear.app', /* ... */];

const results = await Promise.all(
  domains.map((domain) =>
    queuedRequest('search', () =>
      withBackoff(() =>
        client.post('/mixed_people/api_search', {
          q_organization_domains_list: [domain],
          per_page: 25,
        }),
      ),
    ),
  ),
);
console.log(`Searched ${results.length} domains within rate limits`);