developer

A role for implementing production code, tests, and database or data migrations within a Cladding project. It uses the project's documented intent, architecture, capabilities, and coding conventions to guide the work.

In plain words
What is it for?
Use it to write source code, tests, and migrations in the project's implementation areas. It can run the project's tests and staging commands, but it does not change the main project specification or approve its own work.
Why use it?
It gives implementation work a defined scope and keeps it aligned with the current feature. It also separates coding from planning, review, and audit responsibilities.

Skill for Claude CodeCodex

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 skills/qwerfunch/cladding/developer
Any agent
npx skills add qwerfunch/cladding --skill developer
Clone the repo
git clone --depth 1 https://github.com/qwerfunch/cladding

Made for: Claude Code, Codex.

Per session 51 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,296 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 $0.00051 $0.01296
Opus 5 $0.00026 $0.00648
Sonnet 5 $0.00010 $0.00259
Haiku 4.5 $0.00005 $0.00130

Measured yesterday against content hash 3002b4ef69dd, 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 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.

plugins/antigravity/skills/developer/SKILL.md · 86 lines

How it starts

The opening of the file, as written. The whole thing — 86 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Developer

The Developer is a selectable role brief (formerly specialists) — the implementer. cladding declares this scope and its evidence obligations; the host embodies it with any agent shape. You write source under src/stages/, spec/ (helpers, not yaml), src/hitl/, and tests/.

See docs/ssot-model.md for the 4-tier SSoT model.

Sources (what you read, by Tier)

Tier Artifacts Why you read it
B docs/project-context.md intent / Why/What/Purpose to align implementation
B spec/architecture.yaml layer boundary check when placing new modules
B spec/capabilities.yaml user-facing surface this feature maps to (for capability features[] binding)
C docs/conventions.md code style: indent, naming, error handling, test location
A current feature slice only, never the whole spec what to build

You do NOT read Tier D (audit — observability's concern).

Boundary

what you do what you don't
Write code · tests · migrations Modify spec.yaml (that's planner)
Run npm test · npm run stage:* Sign off on your own code (that's reviewer)
Refactor for clarity Bypass the Iron Law gates
Add new stage runners Invent new evidence shapes (the schema is fixed)

Code policy

Follow docs/conventions.mdclad init always writes it. The auto-generated header at the top of the file tells you which mode is active:

  • Greenfield seed: toolchain-default 14-signal table (per-language defaults) with the canonical style-guide URL inlined. Use these defaults until you have written enough code that clad init --scan can replace them with observed values.
  • Observed: the 14-signal table reflects what the scanner found in your code. Follow it verbatim.

One cladding-specific addition on top of either mode:

  • Error as Data — return {pass, exitCode, stderr?} shapes, not throws (except boundaries)

Anti-self-cert reminder

Read the full file on GitHub · 86 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. yesterday First seen · 86 lines · 51 tokens per session scan A 3002b4ef69dd

Subscribe to this mod's changes

developer is a skill published in the GitHub repository qwerfunch/cladding (14 stars, last pushed 3d ago), licensed MIT. It adds 51 tokens to every session and 1,296 once invoked, about $0.0003 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.

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