Hex Rate Limits

What it does

When your agent uses it

• Handling rate limit errors
• Implementing retry logic
• Optimizing API request throughput for Hex
• With phrases like hex rate limit

Example prompts

• “hex rate limit”
• “hex throttling”
• “hex 429”
• “/hex-rate-limits”

Requirements

• Compatibility (from SKILL.md): Designed for Claude Code
• Pre-approved tools (allowed-tools): Read, Write, Edit

Workflow steps

5 steps, taken from the first numbered list in SKILL.md.

1. 1Classify requests by project and operation, applying per-scope concurrency limits before dispatch.
2. 2Honor server retry guidance when available; otherwise use bounded exponential backoff with jitter and a maximum attempt count.
3. 3Never replay a run, publish, or schedule mutation without its idempotency key, and defer nonessential work before backlog threatens…
4. 4Monitor aggregate limited/deferred counts and synthetic canary success, tuning a single scope at a time with rollback.
5. 5Route exhausted work to reviewed recovery rather than silently dropping or duplicating runs.

What it can do on your machine

Read from SKILL.md and the folder at commit cfae287. It shows what the files ask for, not the result of running them.

• Tool permissions

  Pre-approves these tools, so the agent can use them without asking each time:

  • Read
  • Write
  • Edit

  From allowed-tools in the SKILL.md frontmatter.

• Runs code

  No scripts in the folder and no shell commands in SKILL.md (its code samples are typescript).

  From the folder's file list and the shell code blocks in SKILL.md.

• Network

  Links to these hosts (documentation or services it may open):

  • learn.hex.tech

  From URLs in SKILL.md, links to its own repository left out.

• Credentials

  Names no API keys, tokens, secrets or passwords.

  From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

• Compatibility

  Designed for Claude Code

  From compatibility in the SKILL.md frontmatter.

Context cost

Hex Rate Limits loads about 1.5k tokens when it runs. Until then it costs about 72 tokens; SKILL.md has 371 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~72

When it runs · the whole SKILL.md, loaded when a task matches

~1.5k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from jeremylongshore/tons-of-skills-marketplace at commit cfae287, republished under its MIT licence (© jeremylongshore). 371 words, ~1,549 tokens.

name

hex-rate-limits

description

Implement Hex rate limiting, backoff, and idempotency patterns. Use when handling rate limit errors, implementing retry logic, or optimizing API request throughput for Hex. Trigger with phrases like "hex rate limit", "hex throttling", "hex 429", "hex retry", "hex backoff".

allowed-tools

Read, Write, Edit

compatibility

Designed for Claude Code

version

1.6.0

license

MIT

author

Jeremy Longshore <jeremy@intentsolutions.io>

tags

saas, hex, data, analytics

class HexRateLimiter {
  private minuteTokens: number = 20;
  private hourlyTokens: number = 60;
  private lastMinuteRefill: number = Date.now();
  private lastHourlyRefill: number = Date.now();
  private queue: Array<{ resolve: () => void }> = [];

  async acquire(): Promise<void> {
    this.refill();
    if (this.minuteTokens >= 1 && this.hourlyTokens >= 1) {
      this.minuteTokens -= 1;
      this.hourlyTokens -= 1;
      return;
    }
    return new Promise(resolve => this.queue.push({ resolve }));
  }

  private refill() {
    const now = Date.now();
    this.minuteTokens = Math.min(20, this.minuteTokens + ((now - this.lastMinuteRefill) / 60_000) * 20);
    this.lastMinuteRefill = now;
    this.hourlyTokens = Math.min(60, this.hourlyTokens + ((now - this.lastHourlyRefill) / 3_600_000) * 60);
    this.lastHourlyRefill = now;
    while (this.minuteTokens >= 1 && this.hourlyTokens >= 1 && this.queue.length) {
      this.minuteTokens -= 1;
      this.hourlyTokens -= 1;
      this.queue.shift()!.resolve();
    }
  }
}

const runLimiter = new HexRateLimiter();

async function hexRunWithRetry(
  projectId: string, params: Record<string, any>, maxRetries = 3
): Promise<any> {
  for (let attempt = 0; attempt <= maxRetries; attempt++) {
    await runLimiter.acquire();
    const res = await fetch(`${HEX_BASE}/api/v1/run/${projectId}`, {
      method: "POST", headers,
      body: JSON.stringify({ inputParams: params }),
    });
    if (res.ok) return res.json();
    if (res.status === 429) {
      const delay = 30_000 * Math.pow(2, attempt) + Math.random() * 5000;
      await new Promise(r => setTimeout(r, delay));
      continue;
    }
    if (res.status >= 500 && attempt < maxRetries) {
      await new Promise(r => setTimeout(r, Math.pow(2, attempt) * 3000));
      continue;
    }
    throw new Error(`Hex API ${res.status}: ${await res.text()}`);
  }
  throw new Error("Max retries exceeded");
}

async function batchRunProjects(projects: Array<{ id: string; params: any }>, batchSize = 5) {
  const results: any[] = [];
  for (let i = 0; i < projects.length; i += batchSize) {
    const batch = projects.slice(i, i + batchSize);
    const runs = await Promise.all(
      batch.map(p => hexRunWithRetry(p.id, p.params))
    );
    // Poll for completion
    for (const run of runs) {
      let status = run;
      while (status.status === "RUNNING") {
        await new Promise(r => setTimeout(r, 5000));
        const res = await fetch(`${HEX_BASE}/api/v1/run/${run.runId}/status`, { headers });
        status = await res.json();
      }
      results.push(status);
    }
    if (i + batchSize < projects.length) await new Promise(r => setTimeout(r, 15_000));
  }
  return results;
}

© jeremylongshore, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in skills/.curated/hex-rate-limits of jeremylongshore/tons-of-skills-marketplace.

Open the folder on GitHubat commit cfae287