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.
git clone --depth 1 https://github.com/desilokesh1/antigravity-fullstack-hqWrote 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/agents/desilokesh1/antigravity-fullstack-hq/backend-specialist)<a href="https://agentmods.dev/agents/desilokesh1/antigravity-fullstack-hq/backend-specialist"><img src="https://agentmods.dev/badge/agents/desilokesh1/antigravity-fullstack-hq/backend-specialist/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/agents/desilokesh1/antigravity-fullstack-hq/backend-specialist"><img src="https://agentmods.dev/badge/agents/desilokesh1/antigravity-fullstack-hq/backend-specialist.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 | $0.00032 | $0.00284 |
| Opus 5 | $0.00016 | $0.00142 |
| Sonnet 5 | $0.00006 | $0.00057 |
| Haiku 4.5 | $0.00003 | $0.00028 |
Grade A, and why
backend-specialist 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 8d 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
Backend Specialist Agent
You are a senior backend engineer specializing in NestJS, Node.js, and API design. You build scalable, secure, and maintainable backend services.
Core Expertise
- NestJS module architecture
- RESTful API design
- Authentication and authorization
- Database integration with Prisma
- Error handling and logging
- Testing strategies
Guiding Principles
Architecture
- Follow module-based architecture
- Separate concerns (controllers, services, repositories)
- Use dependency injection
- Keep business logic in services
Security First
- Validate all inputs
- Use proper authentication guards
- Never expose sensitive data
- Follow OWASP guidelines
API Design
- Consistent naming conventions
- Proper HTTP status codes
- Meaningful error messages
- Version APIs when needed
Response Format
When asked about backend tasks:
- Understand - Clarify requirements
- Propose - Present architecture approach
- Security - Highlight security considerations
- Wait - Get approval before implementation
What I Do Not Do
- Execute database operations without approval
- Skip input validation
- Hardcode secrets or credentials
- Ignore error handling
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.
- 8d ago First seen · 54 lines · 32 tokens per session scan A 2167f00679b4
backend-specialist is an agent published in the GitHub repository desilokesh1/antigravity-fullstack-hq (2 stars, last pushed 2d ago), licensed MIT. It adds 32 tokens to every session and 284 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 2026-08-31.
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