Yes. For non-C++ users, the README explicitly recommends downloading a pre-built protoc binary from the release page instead of building the C++ source.

• Each release provides protoc-$VERSION-$PLATFORM.zip, containing the protoc binary and the standard .proto files.
• Python has a separate python source directory, showing that compiler installation and target-language runtime installation are separate steps.
• Source builds are recommended when using main, modifying protobuf code, or using C++ itself.
• If the required old version is no longer on the release page, the README points to the Maven repository; however, it does not specify the Python runtime installation command.

No, at least not as the primary exchange format for this browser API. Your hard requirement is human readability and manual editing, while protobuf uses binary encoding and depends on schemas and generated code.

• The project insight explicitly says protobuf data is not human-readable and is less convenient than JSON or XML for troubleshooting and manual modification.
• Consumers must share and correctly manage the schema; without the schema or generated code, parsing and debugging become more difficult.
• The README points JavaScript users to the separate protobuf-javascript repository, showing that JavaScript support exists but does not mean browsers can consume the format directly without tooling.
• The project prioritizes compact messages, type constraints, and parsing efficiency, which does not match the stated requirement to inspect and edit responses directly.

Yes, it is suitable because the project combines .proto schemas, the protoc compiler, and language-specific runtimes into a cross-language data exchange toolchain.

• A .proto file can define message types, fields, and service interfaces as a shared contract, reducing duplicated implementations across C++, Java, and Python.
• The README lists C++, Java, and Python runtimes and points Go users to protocolbuffers/protobuf-go, allowing these languages to work from the same schema.
• protoc generates message classes, accessors, serialization, and deserialization code, but transport, authentication, retries, and service discovery still require other components.
• The team must manage protoc, generator plugins, and language runtime versions together; otherwise generated-code incompatibilities may occur.

It depends. Protocol Buffers provides field-number mechanisms for schema evolution, but compatibility depends on strict schema discipline and is not automatic.

• The project insight states that field numbers support gradual evolution, provided published numbers are not reused and existing semantics are not changed.
• Deleted fields should retain their numbers and names; careless reuse can cause old and new versions to decode data incorrectly, including silent corruption.
• Java and C# runtimes are listed in the README, but cross-language behavior also depends on Proto syntax, generator versions, runtime versions, and type-system differences.
• Unknown fields, enum extensions, oneof, and field-presence semantics require explicit handling, or gateways and mixed-version services may lose data.

Yes, provided that both the dependency version and source are explicitly pinned. The README supports Bzlmod with Bazel 8+ and recommends released versions or fixed commits on release branches.

• In MODULE.bazel, protobuf can be declared with bazel_dep(name = "protobuf", version = <VERSION>), with an optional repo_name override.
• The README warns that main may contain source-incompatible changes and insufficiently tested behavior, so tracking it does not meet a stable production-build constraint.
• If building from source, the README recommends pinning C++ projects to a release commit on a release branch; the WORKSPACE example also includes a sha256 field for source verification.
• Bazel 8+, Bzlmod, rules_java, and rules_python configuration still has to match the dependencies actually used by the project.

It depends. The project covers these languages, but installation sources and maintenance boundaries are not uniform, so it fits a release pipeline with version governance rather than a team expecting one package to manage every dependency automatically.

• The README places the C++, Python, and PHP runtimes in this repository, while Go, Dart, and JavaScript point to separate repositories; Dart is not maintained through the same entry point.
• protoc is a separate compiler written in C++; non-C++ users generally download a pre-built binary, while runtimes are installed per language.
• The project insight warns that upgrading protoc without matching the target runtime or generator plugin can cause compilation failures or behavioral differences.
• The README links to a version support policy but does not provide language-specific support windows or a complete compatibility matrix in the selected text.

Yes, provided that you treat it as a schema-driven serialization format rather than a complete communications framework; that matches your requirement for a data format only.

• The project is positioned as a serialization mechanism for structured data and emphasizes language neutrality, platform neutrality, and extensibility.
• The project insight says protobuf is generally more compact and cheaper to parse than generic text formats, making it relevant to resource-sensitive infrastructure and embedded scenarios.
• The C++ installation path includes both protoc and the C++ runtime, which supports building and integrating it into a C++ project.
• Transport, authentication, authorization, retries, and flow control are not provided by protobuf. Since your stated requirement excludes those features, their absence is not a blocker.