GitHub
Sans Serif Systems

Open tools and live demos for
natural language programming

Try browser-native utilities now. Local-first CLI packages are planned. Use them to convert fuzzy model outputs into repeatable production execution workflows.

Explore Tools Enter Sans Serif Sentiments

Systems

Tools, interactive canvases, workflow utilities, product docs, and live lab logs.

Sentiments

Essays, field notes, notes, archives, and the thinker/tinkerer/translator writing garden.

Start with the layer you need

Navigate the systems workspace depending on your current validation objective:

Visitor Need Path
Try a browser utility ToolSmith Bench →
Understand the system model Docs Catalog →
See working proof Live Lab Ledger →
Use a thinking canvas Visual Canvases →
Understand the boundary Public / Private →
What this is
  • A public systems lab for AI workflows
  • A set of browser-native helper utilities
  • A documentation surface for AI-assisted work
  • A proof space for governed execution loops
What this is not
  • Not a commercial SaaS platform yet
  • Not autonomous agent deployment
  • Not a live, installable CLI package
  • Not a replacement for human review

What are you trying to build today?

The Natural Language Programming Stack

Interactive architectural layers required to govern agentic workflows without losing control.

Governance Layer
Execution Loops
Workflow Orchestration
Context Architecture
Prompt Specification

Inspect the Architecture

Select or hover any layer in the stack to examine how to control non-deterministic systems in production.

How the Sans Serif Systems stack fits together

An overview of the ecosystem layers from browser utilities to planned agent runtimes.

ToolSmith

Browser Utility Layer

Client-side code generators, schema compilers, and query evaluators running natively in the browser.

Tessera

Job Contract Layer

Reusable schemas and converter specifications defining execution payloads for deterministic code validation.

Governance Engine

Governance & Workflow Layer

Structured state transition tables and human-in-the-loop validation checklists that govern runtime decisions.

BrainBench

SDLC Memory & Control Layer

Unified interface managing context parameters, execution checkpoints, and agent handoff protocols.

Hermes

Agent Runtime Operator

Deterministic execution nodes and parser-guided agents translating prompts into concrete execution scripts.

Content Engine

Documentation Workflow Layer

Dynamic parser generating documentation specs, validation reports, and interactive visual flow diagrams.

Featured Tool Bench

Six focused utilities designed to solve friction points in AI development loops.

Product Status Legend

Browser Prototype Runs client-side in the browser with manual input validation.
Planned CLI Target Intended future local package path for offline CLI setups.
Tessera-compatible Output schema structure is designed for future job contract reuse.
Future Wiring Planned integration lines for secure multi-agent runtimes.
Prompt & Context Live Demo

Prompt ➔ JSON

Convert unstructured prose prompts into production-ready JSON schemas.

Engine ToolSmith
Mode Browser prototype
Contract Tessera-compatible
Future Wiring Tessera JobPack
ℹ Planned CLI target: tesserakit-prompts
Try Live in Browser →
Workflow & Loop Live Demo

Workflow ➔ Diagram

Generate interactive Mermaid flowcharts and schemas from text workflows.

Engine ToolSmith
Mode Browser prototype
Contract Tessera-compatible
Future Wiring Tessera JobPack
ℹ Planned CLI target: tesserakit-recipes
Try Live in Browser →
Prompt & Context Local Prototype

Repo ➔ Context Pack

Gather and compress repository structures into a single XML pack for LLM ingestion.

Engine ToolSmith
Mode Manual input
Contract Tessera-compatible
Future Wiring Tessera JobPack
ℹ Planned CLI target: tesserakit-repo
Open Prototype Sandbox →
Harness & Evaluation Local Prototype

CSV ➔ Eval Harness

Convert raw CSV outputs into structured evaluation datasets and rubrics.

Engine ToolSmith
Mode Browser prototype
Contract Tessera-compatible
Future Wiring Tessera JobPack
ℹ Planned CLI target: tesserakit-evals
Open Prototype Sandbox →
Workflow & Loop Local Prototype

Change Request ➔ HITL Checklist

Analyze codebase change requests to generate human-in-the-loop review gates.

Engine ToolSmith
Mode Browser prototype
Contract Tessera-compatible
Future Wiring Governance Engine
ℹ Planned CLI target: tesserakit-core
Open Prototype Sandbox →
Docs & Assets Local Prototype

Code/Notes ➔ PDF Brief

Transform raw dev notes and diagrams into print-ready documentation briefs.

Engine ToolSmith
Mode Browser prototype
Contract Tessera-compatible
Future Wiring Content Engine
ℹ Planned CLI target: tesserakit-core
Open Prototype Sandbox →
Open Source & Collaboration

Interested in building together?

These utilities are open-source and shaped by community workflows. If you have suggestions for structured templates, new evaluation configurations, or want to collaborate on natural language programming contracts, let's connect.

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