Reference
Capability Matrix
Maturity per feature and target.
The capability matrix is the source of truth for what's stable, useful, experimental, or designed-for. The full live matrix is maintained in the repo at docs/capability-matrix.md — read that for the most accurate detail. This page summarizes the high-level shape.
| Target | Status |
|---|
| Node | Stable MVP. |
| Temporal worker | Stable MVP (live tests opt-in). |
| Docker sandbox | Useful MVP (live tests gated by FABRIC_DOCKER_TEST=1). |
| Cloudflare Workers + Sandbox | Experimental. |
| Foundry Hosted Agents | Build scaffold + preview metadata. |
| Azure Container Apps / ACI / AKS / Databricks | Designed-for, roadmap. |
| Feature | Status |
|---|
Metadata agents (agent({...})) | Stable. |
| Skills (Markdown) | Stable; richer YAML & schemas roadmap. |
| Roles (Markdown) | Stable. |
| Built-in tools (read/write/edit/bash/grep/glob/task) | Stable. |
Agent/session/prompt cwd scoping | Stable. |
| Scoped commands | Stable. |
| Typed result validation | Stable. |
| Tasks (durable child runs) | Stable on Node + Temporal. |
| Approvals | Stable. |
| Checkpoints | Stable; sandbox snapshot integration partial. |
| Artifacts | Stable. |
| Compaction | Stable. |
| Replay | Stable. |
| Provenance + attestation | Stable. |
| SBOM (Syft) | Stable when Syft is on PATH. |
| Cosign signing | Stable when cosign is on PATH. |
| Store | Status |
|---|
| File (default) | Stable. |
| SQLite | Stable. |
| Postgres | Stable. |
| Cloudflare Durable Object | Improving. |
| Cloudflare R2 artifacts/source files | Useful MVP; live Worker/R2 tests opt-in. |
| S3/Azure Blob filesystem sources | Useful MVP via dependency-free connector adapters. |
| Backend | Status |
|---|
| Empty / virtual bash (in-memory) | Stable. |
| Local (host repo) | Stable. |
| Docker | Useful MVP. |
| Cloudflare Sandbox | Experimental. |
| Daytona / E2B / Modal / Kubernetes / Firecracker | Provider-neutral RemoteSandboxApi adapter path; connector recipes via fh add; first-class adapters roadmap. |
