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 rrezartprebreza/spring-boot-skills --skill spring-cloud-gatewaygit clone --depth 1 https://github.com/rrezartprebreza/spring-boot-skillsWrote 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/rrezartprebreza/spring-boot-skills/spring-cloud-gateway)<a href="https://agentmods.dev/skills/rrezartprebreza/spring-boot-skills/spring-cloud-gateway"><img src="https://agentmods.dev/badge/skills/rrezartprebreza/spring-boot-skills/spring-cloud-gateway/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/rrezartprebreza/spring-boot-skills/spring-cloud-gateway"><img src="https://agentmods.dev/badge/skills/rrezartprebreza/spring-boot-skills/spring-cloud-gateway.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector 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 | $0.00043 | $0.00417 |
| Opus 5 | $0.00022 | $0.00209 |
| Sonnet 5 | $0.00009 | $0.00083 |
| Haiku 4.5 | $0.00004 | $0.00042 |
Grade A, and why
spring-cloud-gateway 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 10d 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.
What it actually says
Spring Cloud Gateway
Keep the gateway an edge adapter. Do not move domain workflows into filters.
Compatibility first
- Select the Spring Cloud release train compatible with the exact Boot 3 minor.
- Import the Spring Cloud BOM and omit individual Spring Cloud dependency versions.
- Prefer the reactive gateway unless the project deliberately uses the MVC variant.
Route rules
- Use stable route IDs and explicit predicates.
- Strip untrusted forwarding, identity, and internal headers at the edge.
- Add correlation headers only after removing client-supplied values.
- Keep path rewriting and host changes visible in route configuration.
- Set connect and response timeouts globally, with narrow route overrides.
Security and resilience
- Authenticate at the edge and authorize again in downstream services.
- Relay tokens only to intended audiences.
- Rate-limit by trusted identity or API key, not an unverified header.
- Retry only idempotent operations and only before response commitment.
- Use circuit breakers for failing dependencies; never hide sustained failure with unlimited retries.
Testing and operations
- Test predicates, filters, header removal, status mapping, and timeouts.
- Use WireMock or a containerized upstream for integration tests.
- Emit route ID, outcome, latency, and upstream metrics with bounded tags.
Examples
- See
examples/good-routes.ymlandexamples/bad-routes.yml.
Gotchas
- Agent trusts
X-User-Idfrom the public request - derive identity after authentication. - Agent retries POST requests by default - retry only operations proven idempotent.
- Agent adds business orchestration to a gateway filter - keep domain logic downstream.
- Agent omits response timeouts - stalled upstreams can exhaust gateway resources.
- Agent mixes incompatible Spring Cloud and Boot versions - use the official compatibility matrix.
What ships with it
3 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.
- 10d ago First seen · 51 lines · 43 tokens per session scan A 592cfdf3ed82
spring-cloud-gateway is a skill published in the GitHub repository rrezartprebreza/spring-boot-skills (260 stars, last pushed 2d ago), licensed MIT. It adds 43 tokens to every session and 417 once invoked, about $0.0002 per session on Opus 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.
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