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.
npx skills add aj-geddes/useful-ai-prompts --skill api-gateway-configurationgit clone --depth 1 https://github.com/aj-geddes/useful-ai-promptsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/aj-geddes/useful-ai-prompts/api-gateway-configuration)<a href="https://agentmods.dev/skills/aj-geddes/useful-ai-prompts/api-gateway-configuration"><img src="https://agentmods.dev/badge/skills/aj-geddes/useful-ai-prompts/api-gateway-configuration/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/aj-geddes/useful-ai-prompts/api-gateway-configuration"><img src="https://agentmods.dev/badge/skills/aj-geddes/useful-ai-prompts/api-gateway-configuration.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket warn
- Snyk pass
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00039 | $0.00582 |
| Opus 5.5 | $0.00016 | $0.00233 |
| Sonnet 5.5 | $0.00008 | $0.00116 |
| Haiku 4.5 | $0.00004 | $0.00058 |
Grade A, and why
api-gateway-configuration scanned grade A with 0 findings 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 2mo ago.
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.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 100 lines — stays where its author put it; the contents beside it link to each section on GitHub.
API Gateway Configuration
Table of Contents
Overview
Design and configure API gateways to handle routing, authentication, rate limiting, and request/response transformation for microservice architectures.
When to Use
- Setting up reverse proxies for microservices
- Centralizing API authentication
- Implementing request/response transformation
- Managing traffic across backend services
- Rate limiting and quota enforcement
- API versioning and routing
Quick Start
Minimal working example:
# kong.yml - Kong Gateway configuration
_format_version: "2.1"
_transform: true
services:
- name: user-service
url: http://user-service:3000
routes:
- name: user-routes
paths:
- /api/users
- /api/profile
plugins:
- name: rate-limiting
config:
minute: 100
policy: local
- name: jwt
config:
secret: your-secret-key
key_claim_name: "sub"
- name: cors
config:
origins:
- "http://localhost:3000"
// ... (see reference guides for full implementation)
Reference Guides
Detailed implementations in the references/ directory:
| Guide | Contents |
|---|---|
| Kong Configuration | Kong Configuration |
| Nginx Configuration | Nginx Configuration |
| AWS API Gateway Configuration | AWS API Gateway Configuration |
| Traefik Configuration | Traefik Configuration |
| Node.js Gateway Implementation | Node.js Gateway Implementation |
Best Practices
✅ DO
- Centralize authentication at gateway level
- Implement rate limiting globally
- Add comprehensive logging
- Use health checks for backends
- Cache responses when appropriate
- Implement circuit breakers
- Monitor gateway metrics
- Use HTTPS in production
What ships with it
7 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 2mo ago First seen · 100 lines · 39 tokens per session scan A 99b04624b9bf
api-gateway-configuration is a skill published in the GitHub repository aj-geddes/useful-ai-prompts (376 stars, last pushed 8mo ago), licensed MIT. It adds 39 tokens to every session and 582 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
api-gateway-configuration compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| api-gateway-configurationaj-geddes/useful-ai-prompts | Skill | 376 | 8mo ago | MIT | A | 39 | Claude Code, Codex |
| mem0-oss-to-platformmem0ai/mem0 | Skill | 68k | 2d ago | Apache-2.0 | A | 217 | Claude Code, Codex |
| azure-mgmt-botservice-dotnetmicrosoft/skills | Skill | 3.2k | yesterday | MIT | A | 78 | Claude Code |
| fastapi-router-pymicrosoft/skills | Skill | 3.2k | yesterday | MIT | A | 46 | Claude Code |
| dev-runtimelangwatch/langwatch | Skill | 5.0k | yesterday | Apache-2.0 | A | 172 | Claude Code |
| api-designericrisco/rsc-harness | Skill | 503 | 2d ago | MIT | A | 105 | Claude Code, Codex |
| migrate-segw-to-raparc-mcp/arc-1 | Skill | 252 | yesterday | MIT | A | 106 | Claude Code |