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ByteAsk
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Your AI C++ EngineerWrites C++.
Proves it compiles, runs, and passes.

ByteAsk is an AI coding agent for C and C++.Every change arrives compiled, sanitized and tested against your build.

Set up ByteAsk (https://byteask.ai) for me.Show the full promptFull promptHide the full promptHide
Set up ByteAsk (https://byteask.ai) for me.

Here are your instructions: https://byteask.ai/agent-guide.txt
Read them in full and follow them step by step.
Ask me what you need in one message, then do the whole setup yourself.
Never spend money without asking me first.
Book a demoManual setup
Works with
  • Claude Code
  • Codex
  • Cursor
  • Windsurf
  • VS Code

ByteAsk sets up from the coding agent on your laptop.

Send yourself the setup prompt and paste it there.

  1. read build
  2. find code
  3. test first
  4. fix
  5. lint
  6. sanitize
Fixed #2019: contains("/b/x"_json_pointer) now returns false. Updated the old exception expectations, added regression coverage, updated documentation, and regenerated the single header.
Built test-json_pointer and ran both variants:
test-json_pointer_default Passed
test-json_pointer_all Passed
100% tests passed, 0 tests failed out of 2
The standalone ASan/UBSan reproducer also passed. The test build used DOCTEST_CONFIG_NO_POSIX_SIGNALS to work around this host’s compatibility issue with old doctest.
Playing recordingRecorded result

Where AI falls short in C++.

Question 9: what issues or blockers have you faced when using AI assistants for C++ coding? AI-generated output is incorrect: 77.5%. Lack of trust in output: 69.9%. Lack of understanding relevant context: 51.4%.

  • 77.5%

    AI output is incorrect

  • 69.9%

    do not trust AI output

  • 51.4%

    AI lacks relevant context

Standard C++ Foundation, 2026 Annual C++ Developer Survey

In C++, the name is not the code.

validate(order);327 matches · 86 files
  1. Namespaces
  2. Overloading
  3. Virtual functions
  4. Templates
  5. Build config
  6. +322 more: comments, tests, mocks
Which one actually gets called?

Review a diff that already ran your build, tests and sanitizers

  1. Ticket

    Assign it in Jira or Linear, or mention @ByteAsk in Slack.

  2. Context

    It finds the code your production build runs, with its callers and tests.

  3. Model

    It gets the few functions that matter, not the whole repository.

  4. Build and test

    It builds the change and runs your tests before and after.

  5. Checks

    Sanitizers and static analysis run on the code it touched.

  6. Pull request

    You review a diff that already compiles and passes.

Works with the toolchain you already use

  • C/C++
  • LLVM
  • GCC
  • clang
  • Compiler Explorer
  • gdb
  • Valgrind
  • ASan, UBSan, TSan
  • perf
  • make
  • CMake
  • QuickBench
  • vcpkg
  • Conan
  • Git
  • GitHub
  • GitLab
  • Bitbucket
  • Jira
  • Linear
  • Slack
  • Microsoft Teams
  • Jenkins
  • GitHub Actions
  • Confluence

Cites the standard for your industry

Your code stays inside your walls

On-prem, air-gapped, or bring your own model key.

Book a demoSee Enterprise

Deployment and controls

On-prem and air-gapped
Run ByteAsk inside your network, including networks with no route to the internet.
Your keys, your gateway
Company API keys through a ByteAsk gateway in your network, with model and provider allowlists.
SSO, SCIM and roles
SAML single sign-on, SCIM provisioning and role-based access control.
Audit logs
Every session and tool call on record, with spend limits per user and per organization.
Retention you set
Custom data retention controls and IP allowlisting.
DPA, SLA and purchase orders
Data processing agreement, uptime SLA, invoicing and purchase orders.
Zero data retention
Your prompts and code are processed to answer the request, then dropped. Nothing is kept. Read the privacy policy
Not used to train models
Your repositories are not used to train any model. Ours or anyone's.
Passwordless sign-in
A signed magic link logs you in. No password to manage, and nothing to paste or leak.

Common questions

Does it work with my agent?

Yes. ByteAsk Context connects over MCP, so any agent that speaks MCP can use it. Claude Code also gets it through hooks: before the first step it hands over the few places the fix most likely belongs, and after an edit it builds and runs only the affected tests.

Claude Code already has an LSP plugin (clangd). Why do I need ByteAsk Context?

An LSP answers questions about one symbol at a time: where it's defined, where it's used, whether your last edit compiles. To use it, the agent first has to know which symbol matters, so it still searches the codebase. ByteAsk Context starts from the issue itself. Before the agent's first step, it hands over the few places the fix most likely belongs, with their code, callers and the tests that cover them, all from a compiler-accurate index of your real build. After an edit, it builds and runs only the affected tests. It doesn't stop at compile errors.

In our same-model tests on hard C++ issues, Claude Code with ByteAsk Context used 59% fewer tokens, cost 39% less and finished 43% faster than Claude Code with the clangd plugin.

Why use ByteAsk instead of Claude Code, Cursor or Codex?

They are good general-purpose agents. ByteAsk adds the two things C and C++ need.

Context. It reads your build, not just your text: the preset, flags and macros your production binary compiles. On the same model, it finds the right function first 54% of the time instead of 36% (Multi-SWE-bench C++, 129 issues).

Harness. Every change is compiled, run under AddressSanitizer, UBSan and ThreadSanitizer, and tested before you see it. When your program crashes or hangs, it joins the gdb session you already have open.

It works with the models you already use, or your own key.

Do I have to use your models?

No. Sign in and use OpenAI, Anthropic and Google models through ByteAsk with no API key to paste, or bring your own key, in which case traffic goes straight to the provider. You can also point ByteAsk at your own OpenAI-compatible server, including vLLM, Ollama, llama.cpp, LM Studio, TGI, SGLang or a LiteLLM proxy.

Can we run it inside our own network?

Yes, on the Enterprise plan: on-prem deployment including air-gapped networks, company API keys through a ByteAsk gateway in your network, SSO, SCIM, audit logs and IP allowlisting.

Which editors does it work in?

VS Code, Cursor, JetBrains IDEs, Neovim, Emacs and Zed, plus Windsurf and VSCodium through Open VSX. Every connector needs the byteask CLI on your PATH, since the editor plugin drives the same CLI.

Set up ByteAsk with one prompt

Rolling out to a team?
Book a demo or contact us.

Set up ByteAsk (https://byteask.ai) for me.

Here are your instructions: https://byteask.ai/agent-guide.txt
Read them in full and follow them step by step.
Ask me what you need in one message, then do the whole setup yourself.
Never spend money without asking me first.
Manual setup
Works with
  • Claude Code
  • Codex
  • Cursor
  • Windsurf
  • VS Code

ByteAsk sets up from the coding agent on your laptop.

Send yourself the setup prompt and paste it there.