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Devrites api interface

Skill ViktorsBaikers/DevRites/pack/generated/claude/skills/devrites-api-interface

Stop your AI from shipping half-baked code. A disciplined senior-engineer workflow for Claude Code (spec, vet, build, prove, review, seal, ship) that keeps each feature's state on disk, catches spec drift mid-build, gates every phase on your project's principles, and refuses to claim "done" without proof.

Install
npx -y skills add ViktorsBaikers/DevRites --skill devrites-api-interface

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What its author says it does

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Design stable API/interface contracts before implementation: REST/GraphQL endpoints, module boundaries, type contracts, FE/BE splits. Use when the user says "design the API" or a slice crosses a boundary. Not for helpers.

SKILL.md

3.8 KB, as published. Nobody here has run it

devrites-api-interface: contract before implementation

When a slice crosses a boundary (FE/BE, service/service, module/module) or exposes a public interface, define the contract first so both sides can proceed and the interface stays stable.

Define the contract first

  • Shape: request/response or function signature; field names, types, optionality, units. Follow the project's existing naming and conventions.
  • Status & errors: success codes, error codes, error body shape, validation messages. Errors are part of the contract, not an afterthought.
  • Semantics: idempotency, pagination, ordering, nullability, side effects.
  • Versioning/compat: is this new or a change to an existing contract? A breaking change to an existing consumer is a user decision (and a drift event if unplanned).

Stability principles

  • Design for the caller. The interface should make the common case easy and the wrong call hard.
  • Prefer addition over modification. A new field is additive and optional; changing a field's type or removing one is a breaking change. You can add later. You can't un-ship a shape consumers already read (observable behavior is the contract: deprecation.md Hyrum's law).
  • One-Version Rule. Design as if only one version of this interface will ever exist: extend the single contract rather than fork a v2 you then maintain in parallel. Forking multiplies the surface and breeds diamond-dependency conflicts; bump a version only when an addition genuinely can't stay backward-compatible.
  • Match existing endpoints/modules in style: don't introduce a competing convention.
  • Validate at the boundary, and only there (untrusted → trusted); don't trust caller-supplied trust signals (IDs, roles). Validation does not belong between two internal typed functions, on your own database's data, or in a utility already called by validated code. A check inside the trusted core hides the bug in the boundary that should have caught it. A third-party API response is external input: always untrusted. (Three-tier boundary: security.md; see rite-review/reference/security-review.md.)

Type craft: make the wrong call unrepresentable

  • Brand your ids. A bare string/number id is assignable to any other id, so the compiler won't stop you passing a userId where a taskId is due. Give each a nominal brand (type TaskId = string & { readonly __brand: 'TaskId' }) and the mix-up becomes a type error, not a production incident.
  • Model variants as discriminated unions, each state carrying only its own fields, so an impossible combination can't be constructed in the first place.

Enables the split

A clear contract lets /rite-plan split proceed: the backend slice can land against the contract with a stub consumer; the frontend slice can build against a mock or the real contract. Neither side blocks on the other.

Doubt the contract

Before standing the interface, run devrites-doubt: boundary decisions are exactly the non-trivial kind worth an adversarial check.

Done when

The contract is complete only when every field carries a type + optionality + unit, every success and error status code is enumerated with its error-body shape, the devrites-doubt verdict is accept, and the contract + rationale are recorded in decisions.md. A contract that pins only the happy-path shape is not done.

Keep looking

Skills are one crate of 328,083. Ordering is by how many stacks a row turns up in, so the top of any crate is what has actually been picked rather than what has the most stars.