Substrate is a training and runtime platform for teams building long-horizon AI agents. Compose tools, supervise traces, run evals against adversarial suites, and deploy sandboxed workers in fourteen regions — all from a single control plane.
Substrate separates the four things agent teams keep wiring themselves: supervised orchestration, continuous evaluation, sandboxed tool execution, and policy-gated deployment. Each surface is inspectable at the token level.
A typed, version-controlled canvas. Drag tools onto the graph, wire in critics and retrievers, and export the entire pipeline as reproducible config. No hidden state, no invisible prompts.
Agents are a new class of principal. We treat them that way — scoped credentials, egress policy, tamper-evident traces, and a revocation surface your security team can actually use at 3am.
Short-lived credentials, per-tool scopes, automatic rotation. Agents can't borrow human creds.
Hardware-isolated workers, deterministic replay, syscall allowlist per tool. No shared filesystem.
Every span is signed and merkle-chained. Auditors verify against public anchors, not your word.
Revoke an agent, a tool, or an entire region in under 400ms. Runtime acknowledges before returning.
Declarative allow-lists per agent, per environment. OPA-compatible. Denials branch the plan, not crash it.
Per-tenant KMS, BYOK, row-level policy inherited into retrieval. Nothing leaks into evals.
Continuous jailbreak, prompt-injection, and tool-misuse suites run nightly against every pipeline.
SOC 2 II, ISO 27001, HIPAA, GDPR, EU AI Act Annex III. Evidence packaged on export.
Substrate ships with a 30-day evaluation tier: 2M agent steps, every region, every eval suite. White-glove onboarding from a solutions engineer on day one.