// api

OpenAPI Contract Guard

Lint an OpenAPI spec and diff two versions to catch breaking API changes before they reach consumers.

Get it on Agensi Find another skill $12 / 60 credits

Format: Agent skill, not a browser app. You need an AI agent that can load its instructions and use the required tools.

Package requirements: Agents that read the open SKILL.md format. Verify runtime and service requirements at the purchase or install destination.

You get: Lints an OpenAPI spec and diffs two versions to catch breaking API changes before they reach consumers.

Licence and purchase details

Review the package licence at the destination.

Review the offer and access method at your chosen marketplace. Agensi provides connected-agent access, not a download. Buying a skill does not include an AI-agent subscription or setup service.

See tested hosts, versions and workflow limits.

What it flags

Within a spec: missing operationId, responses with no schema, untyped params, operations with no security, unbounded arrays or strings.
Across versions: removed paths and operations.
A removed response code.
A parameter becoming required.
Narrowed types and removed enum values.
Removed response fields.

How to run

It analyzes JSON specs; convert YAML to JSON first (the agent can do that). Read-only.

Good to know

Heuristic structural diff. Semantic compatibility and ref-heavy specs may need a manual pass.

// choose with context

Is OpenAPI Contract Guard the right skill?

Best fit

Lints an OpenAPI spec and diffs two versions to catch breaking API changes before they reach consumers.

It returns

Lints an OpenAPI spec and diffs two versions to catch breaking API changes before they reach consumers.

Do not use it as

Do not treat a successful run as proof beyond the supplied files, declared scope, and evidence the skill actually checked.

Compatibility, access, version, and licence

Reads or accesses: Only the files or context you deliberately provide; review the listing before granting additional access.
Compatibility: Agents that read the open SKILL.md format. Verify runtime and service requirements at the purchase or install destination.
Version: Verify the current package version at the linked destination.
Licence: Review the package licence and seller terms at the linked destination.

What happens next

Open the Agensi listing, check the current offer and connect a supported agent. Agensi loads the skill through its connector; it no longer provides a download. Approve any purchase before use. Check Agensi’s current connection guide before changing an existing connection.

Questions

What is the wedge?

Version-to-version breaking-change detection, the thing that pages a team when consumers break.

Does it change anything?

No. It is read-only and flags issues for you to act on.

Break nothing your consumers depend on.

Current price and purchase option are shown on Agensi. Use a supported agent connection on Agensi. Review the requirements above before getting started.

Get OpenAPI Contract Guard on Agensi