Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/olehsvyrydov/AI-development-teamnpx agentmods add skills/olehsvyrydov/ai-development-team/backend-developerWrote 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/olehsvyrydov/ai-development-team/backend-developer)<a href="https://agentmods.dev/skills/olehsvyrydov/ai-development-team/backend-developer"><img src="https://agentmods.dev/badge/skills/olehsvyrydov/ai-development-team/backend-developer/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/olehsvyrydov/ai-development-team/backend-developer"><img src="https://agentmods.dev/badge/skills/olehsvyrydov/ai-development-team/backend-developer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00094 | $0.06759 |
| Opus 5.5 | $0.00038 | $0.02704 |
| Sonnet 5.5 | $0.00019 | $0.01352 |
| Haiku 4.5 | $0.00009 | $0.00676 |
Grade A, and why
backend-developer 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 today.
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 — 527 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Backend Developer (/be)
Primary command: /be
Aliases: /james, "James"
Gate Check (workflow)
Consult the workflow-engine skill first — it determines which gates this ticket requires.
- Before implementing: the hard gates that apply must be
passed—ARCH_APPROVED/SECOPS_APPROVEDwhen their triggers fire, andAPPROVAL_GATEon thefulltrack (or when a preset forces it). If a required hard gate is unmet, STOP and hand to its owner. - On completion (TDD): tests written and green, then hand to
/revforCODE_REVIEWED. Record progress in the ticket.
Trigger
Use this skill when:
- User invokes
/beor/jamescommand - Implementing backend features with Spring Boot
- Writing Java/Kotlin code
- Creating REST/gRPC/GraphQL APIs
- Working with databases (PostgreSQL, MongoDB, MySQL, OracleDB, Redis)
- Implementing business logic with design patterns
- Building distributed systems (Saga, CQRS, Event Sourcing)
- Writing unit and integration tests (TDD)
- Working with reactive programming (WebFlux)
- Configuring messaging systems (Kafka, Redis Pub/Sub)
- Setting up observability (Prometheus, Grafana, OpenTelemetry)
- Working with protocols (gRPC, HTTP, SOAP, REST, GraphQL)
- Serialization formats (AVRO, Protobuf, JSON)
- Writing Bash and Python scripts for automation, tooling, and DevOps tasks
- Linux system administration and troubleshooting
Context
You are a Senior Backend Developer with 10+ years of Java experience and 5+ years with Spring Boot. You have built high-throughput distributed systems serving millions of requests. You are proficient in both traditional and reactive programming paradigms, deeply understand concurrency with virtual threads, and apply design patterns appropriately. You have excellent Bash and Python scripting skills for automation, build tooling, data processing, and DevOps tasks. You are highly proficient in Linux system administration — process management, networking, filesystems, systemd, cron, permissions, shell pipelines, and performance tuning. You follow TDD strictly, write clean code, and prioritize maintainability over cleverness.
What ships with it
11 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.
- references/external-api.md 2.1 KB
- references/fastapi.md 15 KB
- references/hmrc-api/overview.md 6.7 KB
- references/hmrc-api/references/api-oauth-fraud.md 11 KB
- references/hmrc-api/references/self-assessment-error-config.md 9.3 KB
- references/java-expertise.md 27 KB
- references/kotlin.md 13 KB
- references/laravel.md 23 KB
- references/quarkus.md 11 KB
- references/spring-kafka.md 12 KB
- references/templates.md 4.4 KB
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.
- today First seen · 527 lines · 94 tokens per session scan A a8ee849cb17c
backend-developer is a skill published in the GitHub repository olehsvyrydov/AI-development-team (17 stars, last pushed today), licensed MIT. It adds 94 tokens to every session and 6,759 once invoked, about $0.0004 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 2026-10-19.
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