synsema

Programming language · secure by default · agent-native

Humans read the page.
Agents read the source.

One URL, content-negotiated. Synsema is a fast, secure-by-default programming language for AI agents that serves both — flip the panel to see the exact Markdown an LLM gets.

Install Read the docs ↗
GET synsema.com/
200 OK · Content-Type: text/markdown
# Synsema
Fast, secure-by-default, agent-native language.

## Performance
- 47,200 req/s (c=50) — ahead of Go (42,800)

## Security
deny-by-default capabilities.
no `require`, no access.

## Agent-native
Same URL serves Markdown + JSON.
See /llms.txt

Synsema

Fast, secure-by-default, agent-native language.

Throughput
47,200req/s
vs Go (net/http)
+10%
Secure by default
✓
Agent-native
✓

↑ same resource, two representations · curl -H "Accept: text/markdown" docs.synsema.com/en/

Fast · req/s @ c=50
47,200 req/s

Ahead of Go (42,800) and Node (38,700)1. Async-native, true multi-core, one static binary, zero runtime.

Secure by default
-- no require, no access require net("api.shop.com") fetch("api.shop.com") ✓ allowed fetch("evil.com") ⊘ blocked

No require, no access — the interpreter refuses. Auth, validation and intent are declarative.

Agent-native

This page is the demo. Every route serves HTML to people and Markdown/JSON to agents, with auto /llms.txt — no extra work.

The docs expose an MCP server — agents can search, read, run code and test it, all via one endpoint.

How it works ↗

1 · measured on a Linux VPS, 6 workloads, c=50, median of runs (first discarded). Reproducible harness: synsema-arena.