http-client

A set of rules for making HTTP requests, which are messages sent between software systems over the web. It covers separate clients, retries, request limits, protection against SSRF attacks, and a mock client for testing.

In plain words
What is it for?
Use it when implementing or reviewing HTTP calls, adding retry or rate-limit behavior, preventing SSRF, or testing code without contacting real services.
Why use it?
It helps keep network requests consistent and reduces common reliability and security mistakes, such as unlimited retries or requests to unsafe internal addresses.

Cursor rule

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add rules/symkit/bundles-rules/http-client
Clone the repo
git clone --depth 1 https://github.com/SymKit/bundles-rules
Per session 0 Nothing until a file matches its globs; then the whole rule loads.
When invoked 1,593 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 1 finding. Scan, not verified.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00000 $0.01593
Opus 5 $0.00000 $0.00796
Sonnet 5 $0.00000 $0.00319
Haiku 4.5 $0.00000 $0.00159

Measured yesterday against content hash 7d394bd5246e, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade C, and why

http-client scanned grade C with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Cloud metadata endpointhighServer-side request forgery

One request to 169.254.169.254 can return temporary IAM credentials.

// User can target http://169.254.169.254 (AWS metadata) or internal services
ai/cursor/rules/http-client.mdc · 229 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. yesterday First seen · 229 lines · 0 tokens per session scan C 7d394bd5246e

Subscribe to this mod's changes

http-client is a cursor rule published in the GitHub repository SymKit/bundles-rules (3 stars, last pushed 5mo ago), with no licence file. It costs nothing until one of its globs matches a file; then it loads 1,593 tokens. A static security scan graded it C with 1 finding (cloud metadata endpoint). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.