Rate Limit Header Parser — Throttle Info Decoder
Parse and visualize X-RateLimit headers from raw HTTP API responses. Paste response headers to instantly see your quota state — limit, remaining, used, and reset time — displayed as color-coded progress meters. Supports GitHub, OpenAI, Twitter/X, Shopify, and IETF standard rate limit headers.
How to Use Rate Limit Header Parser — Throttle Info Decoder
How to Use the Rate Limit Header Parser
Step 1: Copy Your HTTP Response Headers
Copy the raw response headers from an API call. You can get these from:
- Browser DevTools → Network tab → select a request → Response Headers section
- curl — run
curl -I https://api.example.com/endpointor use-vflag - Postman / Insomnia — copy the response headers panel
- Code — log the headers from your HTTP client (axios, fetch, requests, etc.)
Step 2: Paste into the Input
Paste the raw header text into the left textarea. Include the HTTP status line if present — it will be ignored. The parser accepts any format where each header is on its own line as Name: Value.
Step 3: Use Quick Examples
Click one of the example buttons to load a real-world header set:
- GitHub API — standard X-RateLimit with resource and used fields
- OpenAI API — dual-dimension limits (requests and tokens)
- Twitter/X — X-Rate-Limit style with Unix reset timestamp
- IETF Draft — RateLimit standard with relative reset seconds
Step 4: Read the Visual Results
The right panel shows:
- Provider badge — auto-detected API provider (GitHub, OpenAI, etc.)
- Quota meter per dimension — a progress bar colored green (healthy), amber (caution at 70%+), or red (critical at 90%+)
- Limit / Remaining / Used — the three key quota values
- Resets in — time until the quota window resets, calculated from the reset timestamp or relative seconds
- Retry-After — shown as a warning card if present, indicating how long to wait before retrying
- Parsed Headers — a scrollable table of all key-value pairs found in the input
Supported Header Formats
X-RateLimit-Limit/X-RateLimit-Remaining/X-RateLimit-Reset/X-RateLimit-Used(GitHub, Cloudflare, generic)X-Rate-Limit-Limit/X-Rate-Limit-Remaining/X-Rate-Limit-Reset(Twitter/X)x-ratelimit-limit-requests/x-ratelimit-remaining-requests/x-ratelimit-reset-requests(OpenAI requests)x-ratelimit-limit-tokens/x-ratelimit-remaining-tokens/x-ratelimit-reset-tokens(OpenAI tokens)RateLimit-Limit/RateLimit-Remaining/RateLimit-Reset(IETF draft standard)X-Shopify-Shop-Api-Call-Limit(format: "used/limit", e.g., "32/40")Retry-After(seconds or HTTP-date)
Frequently Asked Questions
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