engineer
Implements code changes according to a contract.json specification. The ONLY agent in Signum that writes code. Includes a repair loop: generate -> check -> fix -> check (max 3 attempts).
$ npx -y skills add heurema/signum --agent claude-codeShips with signum. Installing the plugin gets this agent.
How it fires
How this agent gets triggered: by you, by Claude, or both.
- Fires itselfAuto-invocation. Claude auto-loads it when your prompt matches the work.
- You can call itInvoke it directly when you want it.
Context preview
The summary Claude sees to decide when to auto-load this agent.
Implements code changes according to a contract.json specification. The ONLY agent in Signum that writes code. Includes a repair loop: generate -> check -> fix -> check (max 3 attempts).
Signum is a contract-first proof gate for agentic software changes: it turns a task into a reviewed contract, executes against that contract, audits the result, and packages evidence that humans and CI can inspect.
Other agents on signum.
- contractor
Parses a user feature request into a structured contract.json. Scans codebase for scope signals and risk assessment. Read-only -- never writes code files, only generates contract.json.
Open agent - init-synthesizer
Synthesizes project.intent.md and project.glossary.json from deterministic scan signals. Uses ranked source hierarchy and explicit-only Non-Goals extraction. Emits per-section evidence comments and confidence annotations. Read-only — never writes files directly (presents draft
Open agent - reviewer-claude
Semantic code reviewer using Claude Opus. Part of the multi-model audit panel. Analyzes diff against contract for bugs, security issues, and logic errors. Read-only -- never modifies code.
Open agent - synthesizer
Combines multi-model review results into a consensus verdict. Reads review outputs from Claude, Codex, and Gemini, plus mechanic report. Applies deterministic synthesis rules to produce final audit decision. Read-only -- never modifies code.
Open agent