Operations that reason.
Intelligent planning. Human approval. Deterministic execution.
Describe any operational objective — deploy, investigate, maintain, query. Synth plans against your actual infrastructure, explains every decision, and executes exactly what you approved.
Source-available · Self-hosted · MCP-native
Artifact Intake
Drop an artifact to begin
payments-api
v3.2.1 · container
Paused — move cursor to resume
Simple to Set Up
Two components. One command.
Synth runs as two lightweight services — the Synth server and Envoy — that communicate over HTTP. No complex infrastructure. No vendor lock-in. Self-hosted by design.
The brain
Central server that manages operations, partitions, and environments. Runs the intelligent agent, exposes the REST API, and hosts the MCP server.
The hands
Lightweight agents deployed on target machines. Execute operation steps, probe targets, run health checks, and report results back to Synth.
Operation Types
One system. Every kind of operational work.
A deployment is one type of operation. Synth handles six — all through the same intelligent pipeline: plan, approve, execute, debrief.
Artifact to target
Analyze what you're deploying, probe the target, produce a plan. The original operation — and still the most common.
"Deploy payments-api v2.4.1 to production"
Mutating work, no artifact
Corrective actions, credential rotation, configuration changes. Envoy probes current state, plans the safest path.
"Rotate TLS certificates on the web tier"
Read-only fleet discovery
Ask a question about infrastructure state. Envoy probes, Synth reasons, the Debrief is the deliverable.
"What's the cert expiry status across prod?"
Iterative diagnostic probing
Each finding informs what to probe next. Produces a diagnostic report with a proposed resolution — ready to approve and execute.
"Something is slow on the API tier, investigate"
Condition-based automation
Define a condition and a response intent. When the threshold is crossed, Synth spawns a child operation automatically.
"When disk > 85%, run log-cleanup"
Multi-operation sequences
Plan multiple operation types as one coherent sequence. Single approval, dependency ordering, full lineage.
"Deploy v2.4, rotate API keys, run post-deploy verification"
Intelligent Decisions
Every action explained. Every decision logged.
The agent resolves variables, plans operations, handles conflicts, and diagnoses failures — then explains all of it in plain language. When something goes wrong at 2am, the Debrief tells you exactly what happened and what to do next.
Agent analyzed web-app v2.4.1 and planned a 3-step pipeline: install, migrate, verify. Skipped cache-warmup — no Redis configured.
APP_ENV defined in both partition (production) and environment (staging). Resolved using environment-wins policy. Logged both values for audit.
Health check failed on attempt 1/3 (ECONNREFUSED on port 9410). Root cause: migration step increased startup time. Retried after 5s — passed.
Pipeline Plan
Planned 3-step pipeline for web-app v2.4.1
Steps: install-deps → run-migrations → health-check
Configuration
Resolved 4 variables across partition and environment
1 conflict: APP_ENV — environment value wins (staging)
Execution
All 3 steps completed successfully in 17.5s
install-deps: 14.2s | migrations: 3.1s | health: 0.2s
Verification
Health check passed — HTTP 200 on /health in 42ms
Endpoint: http://acme-web:3000/health
Completed
Deployment succeeded — all checks passed, artifacts written
Capabilities
Intelligence where friction used to be
Scoped Isolation
Partitions give operations their own variables, history, and configuration. Use them when you need isolation — no cross-partition data access or failure propagation. Operations work with or without partition context.
Decision Transparency
Every agent decision is logged in plain language. When something goes wrong, the Debrief tells you exactly what happened, why, and what to do next — specific enough to act on at 2am.
Immutable Record
Every operation captures the exact state at execution time — objective, plan, variables, outcome. Re-run any past operation with confidence. Full audit trail from intent to result.
Protocol-Native
Built on Model Context Protocol from the foundation. Connect external data sources, monitoring tools, and CI/CD systems through standardized MCP servers — not custom integrations.
Any Model, Any Provider
Claude, GPT, Gemini, Grok, DeepSeek, Ollama, or any OpenAI-compatible endpoint. Run the intelligence entirely on your infrastructure — no data leaves your network.
Hardened by Default
Prompt injection protection, SSRF validation, secrets masking, path traversal guards, and webhook HMAC verification. RBAC with SAML/OIDC/LDAP integration.
Architecture
How it all connects
Every operation follows the same path: intent to intelligent planning, to human approval, to deterministic execution, to plain-language explanation.
Engineer declares intent
What needs to happen, which targets, and any partition or environment context.
Synth reasons and plans
SynthThe agent analyzes the objective, probes target systems, resolves variables, and generates a plan — steps are not predefined, they're reasoned from what it actually finds.
Engineer reviews and approves
Every planned step is visible before execution. Dry-run observations show what will change. Nothing runs until approved.
Envoy executes deterministically
EnvoyThe approved plan runs exactly as shown — no re-reasoning, no improvisation. Five handlers cover files, processes, config, containers, and verification.
Debrief explains everything
DebriefEvery decision from both Synth and Envoy is logged in plain language — 21 decision types covering planning, conflicts, diagnostics, and outcomes.
Container Image
payments-api
v3.2.1
Dependencies
Deployments
34
97% success
Corrections
1
from feedback
What Synth Understands
Node.js application built with Express. PostgreSQL dependency via pg package. Health endpoint at /health. Listens on PORT (default 8080).
Configuration Expectations
Inferred Deployment Pattern
Systemd-managed service. Stop → replace binaries → apply config → start → verify health endpoint.
Deployment Plan
web-app
→ production
Standard 5-step deploy with one config change
• API_ENDPOINT updated to v2 — validated in staging for 4h
Envoy's Plan
Stop service gracefully
↩ restart service from current binaries
Backup current binaries
↩ restore from backup directory
Deploy new artifact and apply config
↩ restore binaries from backup
Apply environment config (1 variable changed)
↩ restore previous environment file
Start service and verify health
↩ N/A — read-only verification step
Operational Depth
Built for engineers who get paged
Synth is designed for the worst moments — when something goes wrong at 2am and you need to understand what happened immediately, not after reading logs for twenty minutes.
Failure Diagnosis
When a step fails, the agent investigates: is it a network issue, a config problem, or an application error? The Debrief explains the root cause and suggests next steps.
Health Awareness
Pre-flight and post-deploy health checks. Envoys report readiness state, lifecycle phase, and deployment capacity. Synth won't send work to a draining or degraded Envoy.
Variable Resolution
Variables cascade from environment to partition to operation. Conflicts are detected and resolved by configurable policy. Every resolution is logged — no more mystery overrides.
Pioneer Program
Run Synth in production. Pay nothing.
We're looking for engineering teams to run Synth against real workflows. You get full Enterprise access. We get honest feedback.
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Synth is source-available and self-hosted. Get started in minutes.