Feishu Rate Limit Skill

Intelligent rate limit handling for Feishu/Lark API. Avoid 429 errors and ensure batch operations complete successfully.

Quick Reference

Trigger Conditions

Activate this skill when:

• All Feishu API calls (feishu_doc, feishu_bitable_*, feishu_drive, feishu_wiki, etc.)
• Encountering 429 (rate limit) errors
• Batch operations on Feishu data
• Large data writes/queries to Feishu
• User mentions "Feishu API", "Lark API", "429", "rate limit", "飞书限流"

Feishu API Limits

Custom App Limits

Document API Special Limits

Official Docs: https://open.feishu.cn/document/platform-notices/platform-updates-/custom-app-api-call-limit

Call Strategy

Basic Interval Rules

Initial interval: 1 second
Minimum interval: 1 second
Maximum interval: 10 seconds
Warning threshold: 50 calls/minute

Sliding Window Strategy

class FeishuRateLimiter:
    """Feishu API Rate Limiter"""
    
    def __init__(self):
        self.base_interval = 1.0      # Base interval 1s
        self.current_interval = 1.0   # Current interval
        self.max_interval = 10.0      # Max interval
        self.recent_calls = []        # Recent call records
        self.window_size = 60         # Stats window 60s
        self.max_retries = 3          # Max retries
    
    def before_call(self):
        """Wait before call"""
        time.sleep(self.current_interval)
        self.recent_calls.append(time.time())
        self._adjust_interval()
    
    def _adjust_interval(self):
        """Dynamically adjust interval based on recent call frequency"""
        now = time.time()
        # Count calls in last 60s
        recent = [t for t in self.recent_calls if now - t < self.window_size]
        self.recent_calls = recent
        call_count = len(recent)
        
        # Adjust interval based on frequency
        if call_count > 50:  # Near limit (100/min)
            self.current_interval = min(self.current_interval * 1.5, self.max_interval)
        elif call_count > 30:
            self.current_interval = min(self.current_interval * 1.2, self.max_interval)
        elif call_count < 10 and self.current_interval > self.base_interval:
            # Reduce interval when calls are infrequent
            self.current_interval = max(self.current_interval * 0.9, self.base_interval)
    
    def on_rate_limit(self, retry_after=None):
        """Called when 429 error occurs"""
        if retry_after:
            wait_time = retry_after
        else:
            wait_time = self.current_interval * 2
        
        self.current_interval = min(wait_time, self.max_interval)
        time.sleep(self.current_interval)
    
    def on_success(self):
        """Gradually restore normal interval after success"""
        if self.current_interval > self.base_interval:
            self.current_interval = max(self.current_interval * 0.8, self.base_interval)

Retry Strategy

When 429 error occurs:
1. Parse Retry-After header (if present)
2. Wait specified time OR current_interval × 2
3. Retry (max 3 times)
4. If still fails, log error and notify user

Implementation Guide

1. Batch Operation Processing

❌ Wrong approach:
Write 100 records at once

✅ Correct approach:
for batch in chunks(records, 10):
    for record in batch:
        feishu_bitable_create_record(record)
        sleep(1)  # 1s per record
    sleep(5)  # Extra 5s between batches

2. Prefer Batch APIs

Priority:
1. Batch APIs (create_records, batch_update)
2. Single API + smart interval
3. Concurrent requests (reads only, use cautiously)

3. Smart Caching Strategy

For frequently queried data:
- User info: Cache 24 hours
- Field definitions: Cache 1 hour
- Document structure: Cache 30 minutes
- Department list: Cache 2 hours

Error Handling Flow

┌─────────────────┐
│   API Call      │
└────────┬────────┘
         ▼
┌─────────────────┐
│   Check Response│
└────────┬────────┘
         ▼
    ┌────┴────┐
    │ 429?    │
    └────┬────┘
         │
    ┌────┴────────────────────────────┐
    │ Yes                             │ No
    ▼                                 ▼
┌─────────────────┐          ┌─────────────────┐
│ Check Retry-After│          │   Continue      │
└────────┬────────┘          └─────────────────┘
         ▼
┌─────────────────┐
│  Wait specified │
│  OR interval×2  │
└────────┬────────┘
         ▼
┌─────────────────┐
│  Retries < 3?   │
└────────┬────────┘
         │
    ┌────┴────┐
    │ Yes     │ No
    ▼         ▼
┌─────────┐  ┌─────────────────┐
│ Retry   │  │ Log error, notify│
└─────────┘  └─────────────────┘

Configuration Parameters

feishu_rate_limit:
  enabled: true
  base_interval_ms: 1000      # Base interval 1s
  max_interval_ms: 10000      # Max interval 10s
  max_retries: 3              # Max retries
  window_size_sec: 60         # Stats window 60s
  warning_threshold: 50       # Warning threshold (calls/min)
  batch_size: 10              # Batch size
  batch_delay_ms: 5000        # Delay between batches

Common Scenarios

Scenario 1: Batch Create Bitable Records

Task: Create 200 records

Strategy:
1. Split: 10 records per batch
2. Batch interval: 5 seconds
3. Record interval: 1 second
4. Estimated time: ~40 seconds

Implementation:
batch_1: 10 records → wait 5s
batch_2: 10 records → wait 5s
...
batch_20: 10 records → Done

Scenario 2: Document Batch Write

Task: Write 50 paragraphs to document

Strategy:
1. Paragraph interval: 2-3s (Document API stricter)
2. Every 10 paragraphs: Extra 10s wait
3. Estimated time: ~3-4 minutes

Notes:
- Document API limits are stricter
- Double wait time on 429

Scenario 3: Mixed Operations

Task: Read 100 records + update 50 records

Strategy:
1. Read operations: Can be concurrent
2. Update operations: Serial + 1s interval
3. Mixed: Wait after read before update

Recommendation:
- Batch read first (cacheable)
- Split updates into batches

Best Practices

Troubleshooting

Problem: Frequent 429 Errors

Analysis:

• Call frequency too high
• No interval control implemented
• Batch operations not split

Solution:

1. Increase base interval to 2 seconds
2. Reduce batch size
3. Implement sliding window monitoring

Problem: Operation Timeout

Analysis:

• Wait time too long
• Too many retries

Solution:

1. Adjust max_interval parameter
2. Reduce single operation data volume
3. Use async processing

Integration with Other Skills

Related Resources

• 📖 Feishu API Limits Documentation
• 📖 OpenClaw Feishu Solution
• 📖 Feishu Developer Community
• 📖 OpenClaw Documentation

Version: 1.0.0
License: MIT