--- name: generate-adversarial-api-test-cases-from-an-openapi-9b996b4b33cc slug: "generate-adversarial-api-test-cases-from-openapi-or-graphql-schema" description: "Use Schemathesis when an agent needs to turn an API schema into broad negative and edge-case coverage instead of hand-writing examples. The skill exercises live endpoints or app hooks, explores unexpected combinations, and reports failures that ordinary happy-path tests miss." github_stars: 3214 verification: "security_reviewed" source: "https://github.com/schemathesis/schemathesis" author: "schemathesis" category: "Security & Verification" framework: "Multi-Framework" tool_ecosystem: github_repo: "schemathesis/schemathesis" github_stars: 3214 --- # Generate adversarial API test cases from an OpenAPI or GraphQL schema Use Schemathesis when an agent needs to turn an API schema into broad negative and edge-case coverage instead of hand-writing examples. The skill exercises live endpoints or app hooks, explores unexpected combinations, and reports failures that ordinary happy-path tests miss. ## Installation Use the upstream install or setup path that matches your environment: - uv pip install schemathesis Requirements and caveats from upstream: - Python versions - **Python Tests:** - python Basic usage or getting-started notes: - uvx schemathesis run https://example.schemathesis.io/openapi.json - uvx schemathesis run https://your-api.com/openapi.json - **Command Line:** - Source: https://github.com/schemathesis/schemathesis - Extracted from upstream docs: https://raw.githubusercontent.com/schemathesis/schemathesis/HEAD/README.md ## Source - [Agent Skill Exchange](https://agentskillexchange.com/skills/generate-adversarial-api-test-cases-from-openapi-or-graphql-schema/) --- Source attribution: agentskillexchange Original project: https://github.com/agentskillexchange/skills/blob/7964af467fccaf7d68a4b705bb2e26081fbdd3e8/skills/generate-adversarial-api-test-cases-from-openapi-or-graphql-schema/SKILL.md License: MIT License information: https://opensource.org/license/mit Original upstream instructions; downloaded from Mega AI Hub. ## Upstream license notice MIT License Copyright (c) 2026 Agent Skill Exchange Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # Mega AI Hub resource metadata Creator / publisher: agentskillexchange Original project: https://github.com/agentskillexchange/skills/blob/7964af467fccaf7d68a4b705bb2e26081fbdd3e8/skills/generate-adversarial-api-test-cases-from-openapi-or-graphql-schema/SKILL.md Attribution basis: Source repository record Fields of work: Development & Engineering Roles: Backend Developer, DevOps / SRE, QA / Test Engineer Specialties: API, Testing Tools: GitHub, Schemathesis Country applicability: Country not specified Classification basis: Source catalog labels Instruction SHA-256: 7acfc56aa7f23dab27077b2eef4f5e2d27e8af8f09d5388ba724ab97bc175330