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# WASI Proposals Support
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The following table summarizes Wasmtime's support for WASI [proposals]. If a
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proposal is not listed, then it is not supported by Wasmtime.
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[proposals]: https://github.com/WebAssembly/WASI/blob/main/Proposals.md
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| WASI Proposal | Supported in Wasmtime? | Enabled by default? | CLI Flag Name [^cli] |
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|----------------------------------------|-------------------------|----------------------|-----------------------------|
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| [I/O][wasi-io] | **Yes** | **Yes** | `wasi-common` |
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| [Filesystem][wasi-filesystem] | **Yes** | **Yes** | `wasi-common` |
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| [Clocks][wasi-clocks] | **Yes** | **Yes** | `wasi-common` |
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| [Random][wasi-random] | **Yes** | **Yes** | `wasi-common` |
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| [Poll][wasi-poll] | **Yes** | **Yes** | `wasi-common` |
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| [Machine Learning (wasi-nn)][wasi-nn] | **Yes** | No | `experimental-wasi-nn` |
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| [Blob Store][wasi-blob-store] | No | No | N/A |
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| [Crypto][wasi-crypto] | No | No | N/A |
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| [Distributed Lock Service][wasi-distributed-lock-service] | No | No | N/A |
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| [gRPC][wasi-grpc] | No | No | N/A |
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| [HTTP][wasi-http] | No | No | N/A |
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| [Key-value Store][wasi-kv-store] | No | No | N/A |
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| [Message Queue][wasi-message-queue] | No | No | N/A |
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| [Parallel][wasi-parallel] | No (see [#4949]) | No | N/A |
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| [Pub/sub][wasi-pubsub] | No | No | N/A |
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| [Runtime Config][wasi-runtime-config] | No | No | N/A |
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| [Sockets][wasi-sockets] | No | No | N/A |
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| [SQL][wasi-sql] | No | No | N/A |
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| [Threads][wasi-threads] | **Yes** | No | `experimental-wasi-threads` |
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[^cli]: The CLI flag name refers to to the `--wasi-modules` argument of the
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`wasmtime` executable; e.g., `--wasi-modules=wasi-crypto`. See `wasmtime run
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--help` for more information on the flag's default value and configuration.
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[^crypto]: Build Wasmtime with `--features=wasi-crypto` to enable this.
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[#4949]: https://github.com/bytecodealliance/wasmtime/pull/4949
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[wasi-blob-store]: https://github.com/WebAssembly/wasi-blob-store
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[wasi-clocks]: https://github.com/WebAssembly/wasi-clocks
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[wasi-classic-command]: https://github.com/WebAssembly/wasi-classic-command
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[wasi-crypto]: https://github.com/WebAssembly/wasi-crypto
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[wasi-data]: https://github.com/singlestore-labs/wasi-data
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[wasi-distributed-lock-service]: https://github.com/WebAssembly/wasi-distributed-lock-service
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[wasi-filesystem]: https://github.com/WebAssembly/wasi-filesystem
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[wasi-grpc]: https://github.com/WebAssembly/wasi-grpc
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[wasi-handle-index]: https://github.com/WebAssembly/wasi-handle-index
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[wasi-http]: https://github.com/WebAssembly/wasi-http
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[wasi-io]: https://github.com/WebAssembly/wasi-io
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[wasi-kv-store]: https://github.com/WebAssembly/wasi-kv-store
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[wasi-message-queue]: https://github.com/WebAssembly/wasi-message-queue
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[wasi-misc]: https://github.com/WebAssembly/wasi-misc
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[wasi-threads]: https://github.com/WebAssembly/wasi-native-threads
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[wasi-nn]: https://github.com/WebAssembly/wasi-nn
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[wasi-random]: https://github.com/WebAssembly/wasi-random
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[wasi-parallel]: https://github.com/WebAssembly/wasi-parallel
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[wasi-poll]: https://github.com/WebAssembly/wasi-poll
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[wasi-proxy-wasm]: https://github.com/proxy-wasm/spec
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[wasi-pubsub]: https://github.com/WebAssembly/wasi-pubsub
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[wasi-runtime-config]: https://github.com/WebAssembly/wasi-runtime-config
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[wasi-sockets]: https://github.com/WebAssembly/wasi-sockets
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[wasi-sql]: https://github.com/WebAssembly/wasi-sql
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[wasi-url]: https://github.com/WebAssembly/wasi-url
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