diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
index c650d04c..51dab839 100644
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@@ -32,6 +32,9 @@ jobs:
         with:
           go-version-file: go.mod
 
+      - name: Set up wams-tools.wasm
+        run: make internal/wasmtools/wasm-tools.wasm
+
       - name: Run Go tests
         run: go test ${{ env.go-modules }}
 
diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 4186b5c2..e6ce91c8 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -34,8 +34,13 @@ jobs:
         with:
           go-version-file: go.mod
 
+      - name: Set up wams-tools.wasm
+        run: make internal/wasmtools/wasm-tools.wasm
+
       - name: Vet Go code
-        run: go vet ${{ env.go-modules }} ./tests/...
+        run: |
+          make build
+          go vet ${{ env.go-modules }} ./tests/...
 
   # Test with Go
   test-go:
@@ -61,6 +66,9 @@ jobs:
         with:
           version: ${{ env.wasm-tools-version }}
 
+      - name: Set up wams-tools.wasm
+        run: make internal/wasmtools/wasm-tools.wasm
+
       - name: Run Go tests
         run: go test -v ${{ env.go-modules }}
 
@@ -147,6 +155,9 @@ jobs:
         with:
           version: ${{ env.wasm-tools-version }}
 
+      - name: Set up wams-tools.wasm
+        run: make internal/wasmtools/wasm-tools.wasm
+
       - name: Set up Wasmtime
         uses: bytecodealliance/actions/wasmtime/setup@v1
         with:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index f3b2d256..0b2d0b4a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,12 @@
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/), and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [Unreleased]
+
+### Added
+
+- `internal/wasmtools` now loads compiled `wasm-tools` Wasm module from the `wasm-tools` crate and executes it using wazero. This allows `wit-bindgen-go` to run on any platform without needing to install `wasm-tools` natively.
+
 ## [v0.5.0] — 2024-12-14
 
 ### Changed
diff --git a/Makefile b/Makefile
index 2bbe3468..34d76b6e 100644
--- a/Makefile
+++ b/Makefile
@@ -5,8 +5,8 @@ wit_files = $(sort $(shell find testdata -name '*.wit' ! -name '*.golden.*'))
 json: $(wit_files)
 
 .PHONY: $(wit_files)
-$(wit_files):
-	wasm-tools component wit -j --all-features $@ > $@.json
+$(wit_files): internal/wasmtools/wasm-tools.wasm
+	wasmtime --dir . internal/wasmtools/wasm-tools.wasm component wit -j --all-features $@ > $@.json
 
 # golden recompiles the .golden.wit test files.
 .PHONY: golden
@@ -21,12 +21,26 @@ generated: clean json
 .PHONY: clean
 clean:
 	rm -rf ./generated/*
+	rm -f internal/wasmtools/wasm-tools.wasm.gz
 
 # tests/generated writes generated Go code to the tests directory
 .PHONY: tests/generated
 tests/generated: json
 	go generate ./tests
 
+# build builds the cmd/wit-bindgen-go binary
+.PHONY: build
+build: internal/wasmtools/wasm-tools.wasm
+	go build -o wit-bindgen-go ./cmd/wit-bindgen-go
+
+internal/wasmtools/wasm-tools.wasm: internal/wasmtools/wasm-tools.wasm.gz
+	gzip -dc $< > $@
+
+internal/wasmtools/wasm-tools.wasm.gz:
+	cd internal/wasmtools && \
+	cargo build --target wasm32-wasip1 --release -p wasm-tools
+	gzip -c internal/wasmtools/target/wasm32-wasip1/release/wasm-tools.wasm > $@
+
 # test runs Go and TinyGo tests
 GOTESTARGS :=
 GOTESTMODULES := ./... ./cm/...
diff --git a/go.mod b/go.mod
index f6c8812a..e1c9915c 100644
--- a/go.mod
+++ b/go.mod
@@ -17,6 +17,7 @@ require (
 	github.com/klauspost/compress v1.17.11 // indirect
 	github.com/opencontainers/go-digest v1.0.0 // indirect
 	github.com/sirupsen/logrus v1.9.3 // indirect
+	github.com/tetratelabs/wazero v1.8.2 // indirect
 	github.com/ulikunitz/xz v0.5.12 // indirect
 	golang.org/x/sync v0.10.0 // indirect
 	golang.org/x/sys v0.28.0 // indirect
diff --git a/go.sum b/go.sum
index 70199c4b..e88216ac 100644
--- a/go.sum
+++ b/go.sum
@@ -29,6 +29,8 @@ github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81P
 github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
 github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
+github.com/tetratelabs/wazero v1.8.2 h1:yIgLR/b2bN31bjxwXHD8a3d+BogigR952csSDdLYEv4=
+github.com/tetratelabs/wazero v1.8.2/go.mod h1:yAI0XTsMBhREkM/YDAK/zNou3GoiAce1P6+rp/wQhjs=
 github.com/ulikunitz/xz v0.5.12 h1:37Nm15o69RwBkXM0J6A5OlE67RZTfzUxTj8fB3dfcsc=
 github.com/ulikunitz/xz v0.5.12/go.mod h1:nbz6k7qbPmH4IRqmfOplQw/tblSgqTqBwxkY0oWt/14=
 github.com/urfave/cli/v3 v3.0.0-beta1 h1:6DTaaUarcM0wX7qj5Hcvs+5Dm3dyUTBbEwIWAjcw9Zg=
diff --git a/internal/wasmtools/.gitignore b/internal/wasmtools/.gitignore
new file mode 100644
index 00000000..fb6223a0
--- /dev/null
+++ b/internal/wasmtools/.gitignore
@@ -0,0 +1,2 @@
+target
+wasm-tools.wasm
diff --git a/internal/wasmtools/Cargo.lock b/internal/wasmtools/Cargo.lock
new file mode 100644
index 00000000..f8349ee9
--- /dev/null
+++ b/internal/wasmtools/Cargo.lock
@@ -0,0 +1,755 @@
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+[[package]]
+name = "smallvec"
+version = "1.13.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3c5e1a9a646d36c3599cd173a41282daf47c44583ad367b8e6837255952e5c67"
+
+[[package]]
+name = "spdx"
+version = "0.10.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bae30cc7bfe3656d60ee99bf6836f472b0c53dddcbf335e253329abb16e535a2"
+dependencies = [
+ "smallvec",
+]
+
+[[package]]
+name = "stable_deref_trait"
+version = "1.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a8f112729512f8e442d81f95a8a7ddf2b7c6b8a1a6f509a95864142b30cab2d3"
+
+[[package]]
+name = "strsim"
+version = "0.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7da8b5736845d9f2fcb837ea5d9e2628564b3b043a70948a3f0b778838c5fb4f"
+
+[[package]]
+name = "syn"
+version = "2.0.89"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "44d46482f1c1c87acd84dea20c1bf5ebff4c757009ed6bf19cfd36fb10e92c4e"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
+[[package]]
+name = "tempfile"
+version = "3.14.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "28cce251fcbc87fac86a866eeb0d6c2d536fc16d06f184bb61aeae11aa4cee0c"
+dependencies = [
+ "cfg-if",
+ "fastrand",
+ "once_cell",
+ "rustix",
+ "windows-sys 0.59.0",
+]
+
+[[package]]
+name = "termcolor"
+version = "1.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "06794f8f6c5c898b3275aebefa6b8a1cb24cd2c6c79397ab15774837a0bc5755"
+dependencies = [
+ "winapi-util",
+]
+
+[[package]]
+name = "terminal_size"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4f599bd7ca042cfdf8f4512b277c02ba102247820f9d9d4a9f521f496751a6ef"
+dependencies = [
+ "rustix",
+ "windows-sys 0.59.0",
+]
+
+[[package]]
+name = "unicode-ident"
+version = "1.0.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "adb9e6ca4f869e1180728b7950e35922a7fc6397f7b641499e8f3ef06e50dc83"
+
+[[package]]
+name = "unicode-width"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1fc81956842c57dac11422a97c3b8195a1ff727f06e85c84ed2e8aa277c9a0fd"
+
+[[package]]
+name = "unicode-xid"
+version = "0.2.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ebc1c04c71510c7f702b52b7c350734c9ff1295c464a03335b00bb84fc54f853"
+
+[[package]]
+name = "utf8parse"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "06abde3611657adf66d383f00b093d7faecc7fa57071cce2578660c9f1010821"
+
+[[package]]
+name = "wasm-encoder"
+version = "0.221.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "de35b6c3ef1f53ac7a31b5e69bc00f1542ea337e7e7162dc34c68b537ff82690"
+dependencies = [
+ "leb128",
+ "wasmparser",
+]
+
+[[package]]
+name = "wasm-metadata"
+version = "0.221.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9fca0d366d1be722f23e9e918e3b926945b21343424bb7a56e845beed82377bf"
+dependencies = [
+ "anyhow",
+ "indexmap",
+ "serde",
+ "serde_derive",
+ "serde_json",
+ "spdx",
+ "wasm-encoder",
+ "wasmparser",
+]
+
+[[package]]
+name = "wasm-tools"
+version = "1.221.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f493321aefc926ad54a0c60859eafd3a426418b41132f6bbe0148f816cdd0735"
+dependencies = [
+ "anyhow",
+ "clap",
+ "env_logger",
+ "log",
+ "serde_json",
+ "tempfile",
+ "termcolor",
+ "wasm-encoder",
+ "wasmparser",
+ "wasmprinter",
+ "wast",
+ "wat",
+ "wit-component",
+ "wit-encoder",
+ "wit-parser",
+]
+
+[[package]]
+name = "wasm-tools-go"
+version = "0.0.0"
+dependencies = [
+ "wasm-tools",
+]
+
+[[package]]
+name = "wasmparser"
+version = "0.221.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8659e755615170cfe20da468865c989da78c5da16d8652e69a75acda02406a92"
+dependencies = [
+ "bitflags",
+ "hashbrown",
+ "indexmap",
+ "semver",
+]
+
+[[package]]
+name = "wasmprinter"
+version = "0.221.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7f4234d0682f373b1878cefd5b3d99843312478ee4f603b2cea34cc2135f0a65"
+dependencies = [
+ "anyhow",
+ "termcolor",
+ "wasmparser",
+]
+
+[[package]]
+name = "wast"
+version = "221.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9d8eb1933d493dd07484a255c3f52236123333f5befaa3be36182a50d393ec54"
+dependencies = [
+ "bumpalo",
+ "gimli",
+ "leb128",
+ "memchr",
+ "unicode-width",
+ "wasm-encoder",
+]
+
+[[package]]
+name = "wat"
+version = "1.221.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c813fd4e5b2b97242830b56e7b7dc5479bc17aaa8730109be35e61909af83993"
+dependencies = [
+ "wast",
+]
+
+[[package]]
+name = "winapi-util"
+version = "0.1.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cf221c93e13a30d793f7645a0e7762c55d169dbb0a49671918a2319d289b10bb"
+dependencies = [
+ "windows-sys 0.59.0",
+]
+
+[[package]]
+name = "windows-sys"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "282be5f36a8ce781fad8c8ae18fa3f9beff57ec1b52cb3de0789201425d9a33d"
+dependencies = [
+ "windows-targets",
+]
+
+[[package]]
+name = "windows-sys"
+version = "0.59.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e38bc4d79ed67fd075bcc251a1c39b32a1776bbe92e5bef1f0bf1f8c531853b"
+dependencies = [
+ "windows-targets",
+]
+
+[[package]]
+name = "windows-targets"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9b724f72796e036ab90c1021d4780d4d3d648aca59e491e6b98e725b84e99973"
+dependencies = [
+ "windows_aarch64_gnullvm",
+ "windows_aarch64_msvc",
+ "windows_i686_gnu",
+ "windows_i686_gnullvm",
+ "windows_i686_msvc",
+ "windows_x86_64_gnu",
+ "windows_x86_64_gnullvm",
+ "windows_x86_64_msvc",
+]
+
+[[package]]
+name = "windows_aarch64_gnullvm"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "32a4622180e7a0ec044bb555404c800bc9fd9ec262ec147edd5989ccd0c02cd3"
+
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "09ec2a7bb152e2252b53fa7803150007879548bc709c039df7627cabbd05d469"
+
+[[package]]
+name = "windows_i686_gnu"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8e9b5ad5ab802e97eb8e295ac6720e509ee4c243f69d781394014ebfe8bbfa0b"
+
+[[package]]
+name = "windows_i686_gnullvm"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0eee52d38c090b3caa76c563b86c3a4bd71ef1a819287c19d586d7334ae8ed66"
+
+[[package]]
+name = "windows_i686_msvc"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "240948bc05c5e7c6dabba28bf89d89ffce3e303022809e73deaefe4f6ec56c66"
+
+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "147a5c80aabfbf0c7d901cb5895d1de30ef2907eb21fbbab29ca94c5b08b1a78"
+
+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "24d5b23dc417412679681396f2b49f3de8c1473deb516bd34410872eff51ed0d"
+
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
+
+[[package]]
+name = "wit-component"
+version = "0.221.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8d6af482af5d64ecae38fe2cbd973c2fda25c4ce6d1cc2abc71c2f3ea81838ed"
+dependencies = [
+ "anyhow",
+ "bitflags",
+ "indexmap",
+ "log",
+ "serde",
+ "serde_derive",
+ "serde_json",
+ "wasm-encoder",
+ "wasm-metadata",
+ "wasmparser",
+ "wast",
+ "wat",
+ "wit-parser",
+]
+
+[[package]]
+name = "wit-encoder"
+version = "0.221.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "456c7064427baef19f7645f4e18f30437b3d1946a1e1cd17d0f9f37d4984cf12"
+dependencies = [
+ "id-arena",
+ "pretty_assertions",
+ "semver",
+ "serde",
+ "wit-parser",
+]
+
+[[package]]
+name = "wit-parser"
+version = "0.221.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "61f5b0a971faff0855a827ef06b25528263a718907bed4056992382316f1e68e"
+dependencies = [
+ "anyhow",
+ "id-arena",
+ "indexmap",
+ "log",
+ "semver",
+ "serde",
+ "serde_derive",
+ "serde_json",
+ "unicode-xid",
+ "wasmparser",
+ "wat",
+]
+
+[[package]]
+name = "yansi"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cfe53a6657fd280eaa890a3bc59152892ffa3e30101319d168b781ed6529b049"
diff --git a/internal/wasmtools/Cargo.toml b/internal/wasmtools/Cargo.toml
new file mode 100644
index 00000000..e142ef29
--- /dev/null
+++ b/internal/wasmtools/Cargo.toml
@@ -0,0 +1,14 @@
+[package]
+name = "wasm-tools-go"
+
+[dependencies]
+wasm-tools = { version = "1.221.0", default-features = false, features = [
+	"component",
+] }
+
+[profile.release]
+lto = true # compile with link-time optimization
+codegen-units = 1 # compile with a single codegen unit
+opt-level = "z" # optimize for size
+panic = "abort" # panic=abort will remove the panic code
+strip = true # strip the debug information
diff --git a/internal/wasmtools/src/lib.rs b/internal/wasmtools/src/lib.rs
new file mode 100644
index 00000000..36db4933
--- /dev/null
+++ b/internal/wasmtools/src/lib.rs
@@ -0,0 +1 @@
+// intentionally left empty
diff --git a/internal/wasmtools/types.go b/internal/wasmtools/types.go
new file mode 100644
index 00000000..91dd6271
--- /dev/null
+++ b/internal/wasmtools/types.go
@@ -0,0 +1,12 @@
+package wasmtools
+
+import (
+	"context"
+	"io"
+	"io/fs"
+)
+
+// Runner is an interface for running Wasm modules.
+type Runner interface {
+	Run(ctx context.Context, args []string, stdin io.Reader, fsMap map[fs.FS]string, name *string) (stdout io.Reader, stderr io.Reader, err error)
+}
diff --git a/internal/wasmtools/wasm-tools.wasm.gz b/internal/wasmtools/wasm-tools.wasm.gz
new file mode 100644
index 00000000..dde0933b
Binary files /dev/null and b/internal/wasmtools/wasm-tools.wasm.gz differ
diff --git a/internal/wasmtools/wasmtools.go b/internal/wasmtools/wasmtools.go
new file mode 100644
index 00000000..329ee44c
--- /dev/null
+++ b/internal/wasmtools/wasmtools.go
@@ -0,0 +1,87 @@
+//go:build !tinygo
+// +build !tinygo
+
+package wasmtools
+
+import (
+	"bytes"
+	"context"
+	"crypto/rand"
+	_ "embed"
+	"fmt"
+	"io"
+	"io/fs"
+	"time"
+
+	"github.com/tetratelabs/wazero"
+	"github.com/tetratelabs/wazero/imports/wasi_snapshot_preview1"
+)
+
+//go:embed wasm-tools.wasm
+var wasmTools []byte
+
+// Instance is a compiled wazero instance.
+type Instance struct {
+	runtime wazero.Runtime
+	module  wazero.CompiledModule
+}
+
+// New creates a new wazero instance.
+func New(ctx context.Context) (*Instance, error) {
+	c := wazero.NewRuntimeConfig().WithCloseOnContextDone(true)
+	r := wazero.NewRuntimeWithConfig(ctx, c)
+	if _, err := wasi_snapshot_preview1.Instantiate(ctx, r); err != nil {
+		return nil, fmt.Errorf("error instantiating WASI: %w", err)
+	}
+
+	module, err := r.CompileModule(ctx, wasmTools)
+	if err != nil {
+		return nil, fmt.Errorf("error compiling wasm module: %w", err)
+	}
+	return &Instance{runtime: r, module: module}, nil
+}
+
+// Close closes the wazero runtime resource.
+func (w *Instance) Close(ctx context.Context) error {
+	return w.runtime.Close(ctx)
+}
+
+// Run runs the wasm module with the context, arguments, stdin, filesystem map, and name.
+// It returns the stdout, stderr, and error.
+// The execution times out after 10 seconds.
+func (w *Instance) Run(ctx context.Context, args []string, stdin io.Reader, fsMap map[fs.FS]string, name *string) (stdout io.Reader, stderr io.Reader, err error) {
+	stdoutBuffer := &bytes.Buffer{}
+	stderrBuffer := &bytes.Buffer{}
+
+	config := wazero.NewModuleConfig().
+		WithStdout(stdoutBuffer).
+		WithStderr(stderrBuffer).
+		WithRandSource(rand.Reader).
+		WithSysNanosleep().
+		WithSysNanotime().
+		WithSysWalltime().
+		WithArgs(append([]string{"wasm-tools.wasm"}, args...)...)
+	if name != nil {
+		config = config.WithName(*name)
+	}
+	if stdin != nil {
+		config = config.WithStdin(stdin)
+	}
+
+	fsConfig := wazero.NewFSConfig()
+	for f, guestPath := range fsMap {
+		fsConfig = fsConfig.WithFSMount(f, guestPath)
+	}
+	config = config.WithFSConfig(fsConfig)
+
+	// timeout to 10 seconds
+	ctx, cancel := context.WithTimeout(ctx, 10*time.Second)
+	defer cancel()
+
+	_, err = w.runtime.InstantiateModule(ctx, w.module, config)
+	if err != nil {
+		return nil, nil, fmt.Errorf("error instantiating wasm module: %w", err)
+	}
+
+	return stdoutBuffer, stderrBuffer, nil
+}
diff --git a/internal/wasmtools/wasmtools_tinygo.go b/internal/wasmtools/wasmtools_tinygo.go
new file mode 100644
index 00000000..d7c19d82
--- /dev/null
+++ b/internal/wasmtools/wasmtools_tinygo.go
@@ -0,0 +1,25 @@
+//go:build tinygo
+// +build tinygo
+
+package wasmtools
+
+import (
+	"context"
+	"errors"
+	"io"
+	"io/fs"
+)
+
+type Instance struct{}
+
+func New(ctx context.Context) (*Instance, error) {
+	return &Instance{}, errors.New("wasm-tools functionality is disabled under TinyGo")
+}
+
+func (w *Instance) Close(ctx context.Context) error {
+	return nil
+}
+
+func (w *Instance) Run(ctx context.Context, args []string, stdin io.Reader, fsMap map[fs.FS]string, name *string) (stdout io.Reader, stderr io.Reader, err error) {
+	return nil, nil, errors.New("wasm-tools functionality is disabled under TinyGo")
+}
diff --git a/wit/load.go b/wit/load.go
index 7d90b132..d2a7843d 100644
--- a/wit/load.go
+++ b/wit/load.go
@@ -2,11 +2,15 @@ package wit
 
 import (
 	"bytes"
+	"context"
 	"errors"
 	"fmt"
 	"io"
+	"io/fs"
 	"os"
-	"os/exec"
+	"path/filepath"
+
+	"go.bytecodealliance.org/internal/wasmtools"
 )
 
 // LoadJSON loads a [WIT] JSON file from path.
@@ -48,27 +52,32 @@ func loadWIT(path string, reader io.Reader) (*Resolve, error) {
 		return nil, errors.New("cannot set both path and reader; provide only one")
 	}
 
-	wasmTools, err := exec.LookPath("wasm-tools")
-	if err != nil {
-		return nil, err
-	}
-
-	var stdout, stderr bytes.Buffer
+	ctx := context.Background()
+	args := []string{"component", "wit", "-j", "--all-features"}
+	fsMap := make(map[fs.FS]string)
+	var stdin io.Reader
 
-	cmdArgs := []string{"component", "wit", "-j", "--all-features"}
 	if path != "" {
-		cmdArgs = append(cmdArgs, path)
+		args = append(args, path)
+		dir := filepath.Dir(path)
+		fsMap[os.DirFS(dir)] = dir
+	} else {
+		stdin = reader
 	}
-
-	cmd := exec.Command(wasmTools, cmdArgs...)
-	cmd.Stdout = &stdout
-	cmd.Stderr = &stderr
-	cmd.Stdin = reader
-
-	if err := cmd.Run(); err != nil {
-		fmt.Fprint(os.Stderr, stderr.String())
+	wasmTools, err := wasmtools.New(ctx)
+	if err != nil {
 		return nil, err
 	}
-
-	return DecodeJSON(&stdout)
+	stdout, stderr, err := wasmTools.Run(ctx, args, stdin, fsMap, nil)
+	if err != nil {
+		return nil, fmt.Errorf("error executing wasm-tools: %w", err)
+	}
+	if stderr != nil {
+		buf := new(bytes.Buffer)
+		buf.ReadFrom(stderr)
+		if buf.Len() > 0 {
+			return nil, fmt.Errorf("%s", buf.String())
+		}
+	}
+	return DecodeJSON(stdout)
 }
diff --git a/wit/testdata_test.go b/wit/testdata_test.go
index 5946e8c4..e37cc9b4 100644
--- a/wit/testdata_test.go
+++ b/wit/testdata_test.go
@@ -2,8 +2,10 @@ package wit
 
 import (
 	"bytes"
+	"context"
 	"flag"
 	"fmt"
+	"io/fs"
 	"os"
 	"os/exec"
 	"strings"
@@ -11,6 +13,7 @@ import (
 	"testing"
 
 	"go.bytecodealliance.org/internal/relpath"
+	"go.bytecodealliance.org/internal/wasmtools"
 
 	"github.com/sergi/go-diff/diffmatchpatch"
 )
@@ -78,26 +81,33 @@ func TestGoldenWITRoundTrip(t *testing.T) {
 		// t.Skip is not available in TinyGo, requires runtime.Goexit()
 		return
 	}
-	if !canWasmTools() {
-		t.Log("skipping test: wasm-tools not installed or cannot fork/exec (TinyGo)")
+	ctx := context.Background()
+	wasmTools, err := wasmtools.New(ctx)
+	if err != nil {
+		t.Logf("wasm-tools not available: %v", err)
 		return
 	}
-	err := loadTestdata(func(path string, res *Resolve) error {
+
+	err = loadTestdata(func(path string, res *Resolve) error {
 		data := res.WIT(nil, "")
 		t.Run(path, func(t *testing.T) {
-			// Run the generated WIT through wasm-tools to generate JSON.
-			cmd := exec.Command("wasm-tools", "component", "wit", "-j", "--all-features")
-			cmd.Stdin = strings.NewReader(data)
-			stdout := &bytes.Buffer{}
-			stderr := &bytes.Buffer{}
-			cmd.Stdout = stdout
-			cmd.Stderr = stderr
-			err := cmd.Run()
+			args := []string{"component", "wit", "-j", "--all-features"}
+			stdin := strings.NewReader(data)
+
+			fsMap := make(map[fs.FS]string)
+			stdout, stderr, err := wasmTools.Run(ctx, args, stdin, fsMap, &path)
 			if err != nil {
-				t.Error(err, stderr.String())
+				t.Errorf("wasm-tools: %v", err)
 				return
 			}
-
+			if stderr != nil {
+				buf := new(bytes.Buffer)
+				buf.ReadFrom(stderr)
+				if buf.Len() > 0 {
+					t.Error(buf.String())
+					return
+				}
+			}
 			// Parse the JSON into a Resolve.
 			res2, err := DecodeJSON(stdout)
 			if err != nil {