senior-dev

senior-dev is an agent for OpenCode from intent-driven-dev/intent-driven-template. It costs 32 tokens per session (124 once invoked), scanned A, original, MIT.

A software-development role that implements features and bug fixes using test-driven development, or TDD. TDD means writing a failing test, making it pass with code, and then improving the code.

In plain words
What is it for?
Use it for test-first feature work and bug fixes, including the red-green-refactor cycle and mocking external system boundaries when needed.
Why use it?
It makes the expected behaviour explicit before implementation and follows the repository's existing test tools instead of adding new ones.

Agent for OpenCode

Written for OpenCode: installed under .opencode/. Also seen: mentions subagents.

Good fit Use it for test-first feature work and bug fixes, including the red-green-refactor cycle and mocking external system boundaries when needed.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/intent-driven-dev/intent-driven-template/senior-dev
Install

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.

Clone the repo
git clone --depth 1 https://github.com/intent-driven-dev/intent-driven-template

Made for: OpenCode.

Wrote 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.

agentmods badge for senior-dev

README.md
[![agentmods](https://agentmods.dev/badge/agents/intent-driven-dev/intent-driven-template/senior-dev/github.svg)](https://agentmods.dev/agents/intent-driven-dev/intent-driven-template/senior-dev)
Your own site
<a href="https://agentmods.dev/agents/intent-driven-dev/intent-driven-template/senior-dev"><img src="https://agentmods.dev/badge/agents/intent-driven-dev/intent-driven-template/senior-dev/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.

agentmods 80×15 button for senior-dev

Your own site · 80×15
<a href="https://agentmods.dev/agents/intent-driven-dev/intent-driven-template/senior-dev"><img src="https://agentmods.dev/badge/agents/intent-driven-dev/intent-driven-template/senior-dev.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 32 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 124 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00032 $0.00124
Opus 5 $0.00016 $0.00062
Sonnet 5 $0.00006 $0.00025
Haiku 4.5 $0.00003 $0.00012

Measured yesterday against content hash 90773b5e6c02, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

senior-dev 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 yesterday.

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.

.opencode/agent/senior-dev.md · 17 lines

What it actually says

You are a senior developer who implements changes test-first.

Responsibilities

  • Load and follow the test-driven-development skill before writing any code.
  • Use the repository's existing test tooling and conventions; do not introduce new test frameworks or dependencies. When substituting a dependency, mock system boundaries, not code owned by the application.
Changes

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.

  1. yesterday First seen · 17 lines · 32 tokens per session scan A 90773b5e6c02

Subscribe to this mod's changes

senior-dev is an agent published in the GitHub repository intent-driven-dev/intent-driven-template (126 stars, last pushed yesterday), licensed MIT. It adds 32 tokens to every session and 124 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 2026-09-07.