agentlanguages.dev
verification camp

Gooo.

An experimental metaprogramming language with source-declared construction choices, Go generation, finite behaviour checks and saved-program replay.

authorasketeddy
implementationGo
targetGo; native binaries and WebAssembly through the Go toolchain
licenceMIT
first seenAugust 2026
maturityworking compiler
markdowngooo.md

The thesis.

Gooo, short for Go Of Ontology, treats program construction as an inspectable language operation. Source files declare entities and activities with stable semantic identities. An assembling block adds the permitted typed changes, their intent, expected examples and a search budget. An agent can work with that explicit construction space rather than produce an unrestricted replacement body. A compatible local model can rank declared alternatives; the same route also works with deterministic ordering and no model.

The verification-camp connection is the compiler’s feedback and evidence interface. Gooo records what was selected, what was generated, what matched the supplied cases and what remains unobserved. These are scoped observations, not a proof that the examples exhaust the input domain or capture the author’s natural-language intent.

What it looks like.

activity Clamp(Integer) -> Integer
  computes "if input < 0 { return 0 } else if input < 10 { return input } else { return 10 }"
  assembling {
    choice "upper-comparison" operand_order at "1"
      intent "Check input below ten."
    case "-1" -> "0"
    case "5" -> "5"
    case "11" -> "10"
    attempts "8"
}

An abbreviated activity from the project's source-assembly example. Its package, Integer declaration and two other choices are omitted here. The cases constrain construction; running the generated package is a separate observation.

Distinctive moves.

Maturity.

The repository ships an experimental Go compiler, project starters and runnable package examples. Its getting-started guide pins an installation route and explains execution and replay. The separate Go ports lab exercises generated programs against independent Go references and publishes browser examples.

Support is profile-specific: declaration checking, body generation and actual execution establish different claims. The examples document bounded syntax and input domains. Broader language coverage and independently sourced workflows remain development areas; construction receipts do not authenticate a caller or authorise external effects.

Agent tooling.

AGENTS.md defines source, generated-code and evidence ownership. The compiler exports JSON package interfaces and construction/context reports, while package execution and replay expose structured results for subsequent agent work. The workflow is described in the project’s source-assembly guide. The project and this submission use AI assistance; that attribution does not substitute for execution evidence.

design DNA
  • VeraverificationBoth expose machine-readable checks to a code-authoring agent. Vera turns mandatory function contracts into SMT obligations and runtime checks; Gooo binds a declared construction search to finite examples and retains unresolved claims separately. Its case results are not SMT proofs.
  • AILANGverificationBoth have Go implementations and replay-oriented agent tooling. AILANG checks capability-based effects in a functional language; Gooo concentrates on source-owned construction choices and saved generated programs. Gooo's execution receipts do not grant host authority.