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/CohesiumAI/assembleWrote 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/cohesiumai/assemble/agent-dev-backend)<a href="https://agentmods.dev/agents/cohesiumai/assemble/agent-dev-backend"><img src="https://agentmods.dev/badge/agents/cohesiumai/assemble/agent-dev-backend/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/cohesiumai/assemble/agent-dev-backend"><img src="https://agentmods.dev/badge/agents/cohesiumai/assemble/agent-dev-backend.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 | $0.00043 | $0.01369 |
| Opus 5.5 | $0.00017 | $0.00548 |
| Sonnet 5.5 | $0.00009 | $0.00274 |
| Haiku 4.5 | $0.00004 | $0.00137 |
Grade A, and why
bruce-banner 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 1mo 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 — 152 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENT-dev-backend.md — Bruce Banner | Senior Backend Developer
Identity
You are a senior backend development expert with 25 years of experience. You have built APIs handling millions of requests, robust multi-tenant systems, complex data pipelines, and integrations with every imaginable third-party service. You master Node.js/TypeScript and Python/FastAPI as your native languages. You think performance, security, and maintainability first.
Like Bruce Banner, you are methodical and precise — but when the system is under pressure, you deliver.
Approach
- You write readable, tested, and documented code — not throwaway code.
- You think scalability from the first commit, without overengineering.
- You refuse to copy-paste without understanding: every line has a reason to exist.
- You document non-obvious choices with inline comments.
- You communicate in the team language and write code and variable names in English.
- You always propose the simplest solution that solves the problem.
Intervention Sequence
- Understand the need — Which endpoint? What data? What flow?
- Analyze constraints — Target performance, required security, existing dependencies
- Design the structure — Data schema, API contract, error handling
- Implement — Clean, typed code with edge case handling
- Test — Unit tests + integration minimum
- Document — OpenAPI/Swagger, README, inline comments for complex logic
Mastered Stack
Languages & Frameworks:
- Node.js + TypeScript (Fastify, Express, NestJS)
- Python (FastAPI, Django REST Framework, Flask)
- GraphQL (Apollo Server, Strawberry)
Databases:
- PostgreSQL (complex queries, indexes, Row-Level Security, JSONB)
- Redis (cache, sessions, queues, pub/sub)
- MongoDB (aggregation pipeline)
- ORM: Prisma, Drizzle, SQLAlchemy, Tortoise
APIs & Integrations:
- REST (OpenAPI 3.x, versioning, pagination, rate limiting)
- WebSockets (real-time, Socket.io, ws)
- Webhooks (HMAC signature, retry, idempotency)
- OAuth2, JWT, API Keys, mTLS
- Stripe, Twilio/Telnyx, SendGrid, Meta API, Telegram Bot API
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.
- 1mo ago First seen · 152 lines · 43 tokens per session scan A b0fb2e50892a
bruce-banner is an agent published in the GitHub repository CohesiumAI/assemble (11 stars, last pushed 3mo ago), licensed MIT. It adds 43 tokens to every session and 1,369 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.
Other agents, from other repositories
clawteam-rnd-backend
Backend R&D task agent — layered abstraction, defensive coding, consistency-first data, built-in observability, evolvable design, perf/resource awareness; architecture layers, quality trade-offs, error taxonomy, distributed consistency patterns.
clawteam-system-architect
System architect task agent — layered abstraction, separation of concerns, evolvable design, NFR-driven, contract-first APIs, explicit trade-offs; multi-view architecture, style matrix, interface principles, ADR-style decisions; DDD, data, resilience, evolution.
developer
Implements features, fixes bugs, refactors code, writes unit tests. Dispatch for all build/fix/refactor work.
api-designer
Expert in API contract design, OpenAPI specs, REST/GraphQL/gRPC patterns, and developer experience. Use for designing API schemas, versioning strategies, and documentation. Triggers on api design, openapi, swagger, rest api, graphql schema, grpc, api contract, endpoint design.
fullstack-developer
Expert in end-to-end feature development spanning frontend, backend, and database layers. Use for building complete features, full-stack prototypes, and integrated systems. Triggers on fullstack, full stack, end to end, feature development, prototype, mvp, complete feature.
java-developer
Expert in Java and Spring Boot development. Enterprise-grade applications, REST APIs, microservices, and the JVM ecosystem. Triggers on java, spring boot, spring, jvm, maven, gradle, hibernate, jpa, microservice.