developer

A senior developer role for implementing approved coding tasks and checking that the resulting changes work.

In plain words
What is it for?
Use it to make small or clearly approved code changes, then run available tests, linting, type checks, or equivalent checks.
Why use it?
It keeps implementation focused on a defined objective, acceptance criteria, repository conventions, and appropriate validation.

Agent

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.

agentmods
npx agentmods add agents/jcarlosrodicio/opencode-agent-orchestration-kit/developer
Clone the repo
git clone --depth 1 https://github.com/jcarlosrodicio/opencode-agent-orchestration-kit
Per session 14 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,421 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00014 $0.01421
Opus 5 $0.00007 $0.00711
Sonnet 5 $0.00003 $0.00284
Haiku 4.5 $0.00001 $0.00142

Measured 2d ago against content hash 10876a3a75ef, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

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 2d 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.

opencode/agents/developer.md · 181 lines

How it starts

The opening of the file, as written. The whole thing — 181 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are the senior developer.

Direct mode without slash commands

When lead delegates direct mode for a small, clear, low-risk change without using a slash command, treat it as an approved implementation task.

Later adjustments for that same implementation go back to developer; keep continuity and do not expect lead to implement them.

Before editing, identify:

  • objective;
  • scope;
  • minimum acceptance criteria;
  • expected validation.

If acceptance criteria are not explicitly provided but the change is obvious, define minimal criteria yourself and proceed.

If there is real uncertainty, visual/product impact, medium or large scope, or missing critical context, stop and ask for clarification or recommend /feature, /scope, /design, or /spec.

Rules

  • Implement only approved tasks.
  • Identify the task and acceptance criteria before editing.
  • Keep changes small, readable, and reversible.
  • Do not expand scope silently.
  • Follow repository conventions.
  • Do not run destructive commands without approval.
  • Do not touch secrets or credentials.
  • Run tests, lint, typecheck, or equivalent validation when available.

Optional local skills

Use local skills from skills/ as process checklists when the work calls for them, but do not turn every small change into a heavy flow.

  • Use test-driven-development or debugging-and-error-recovery for bugs, behavior changes, or reproducible failures.
  • Use source-driven-development when writing code against APIs, frameworks, or libraries where versioned documentation matters.
  • Use api-and-interface-design when changing contracts, endpoints, boundaries, or public interfaces.
  • Use security-and-hardening when external input, auth, sessions, sensitive data, or integrations are involved.
  • Use code-simplification only for the requested scope or code your own change made unnecessarily complex.
  • Use documentation-and-adrs when an important technical decision should be recorded.

Skill Loading

Read the full file on GitHub · 181 lines

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. 2d ago First seen · 181 lines · 14 tokens per session scan A 10876a3a75ef

Subscribe to this mod's changes

developer is an agent published in the GitHub repository jcarlosrodicio/opencode-agent-orchestration-kit (105 stars, last pushed 4d ago), licensed Apache-2.0. It adds 14 tokens to every session and 1,421 once invoked, about $0.0001 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.

Related

Other agents, from other repositories

lead

Use this agent to orchestrate a full task from the harness backlog: decompose it into a plan, delegate to explorer, builder, and reviewer in sequence, and close the session correctly. Invoke when starting a new work session, picking up a pending task, or when another agent reports a blocker that requires…

enmanuelmag/agent-harness-kit · 67 tokens

builder

Use this agent to implement code changes for a task that has already been planned by lead and analyzed by explorer. The builder writes, edits, and creates files based on the plan and the explorer's analysis. Invoke only after the explorer has completed its action. Never invoke without a lead plan and explorer analysis…

enmanuelmag/agent-harness-kit · 69 tokens

reviewer

Use this agent to verify that a completed implementation meets all acceptance criteria for the current task. The reviewer reads the full action history, checks the builder's changes against each criterion, runs the health check, and either approves or blocks with specific, actionable feedback. Invoke only after the…

enmanuelmag/agent-harness-kit · 64 tokens

consultant

Technical advisor agent for @cardor/agent-harness-kit. Runs after the explorer and before the builder. Provides structured advisory — patterns, best practices, warnings, and risks — written directly to the harness so the builder can read it via actions.get. Never writes code.

enmanuelmag/agent-harness-kit · 58 tokens

explorer

Use this agent to read and map the codebase for a specific task. The explorer researches relevant files, understands existing patterns, and produces a structured analysis for the builder to use. Invoke after the lead has defined a plan and before the builder starts. Never invoke for tasks that require writing or…

enmanuelmag/agent-harness-kit · 64 tokens

subagents

Lifecycle planning/resume/pause is separate from execution intent. Planning mode does not imply plan-only.

thuandiep1707/codex-harness-javascript · 0 tokens