OpenAPI Specification
The OpenAPI Specification (OAS), previously known as the Swagger Specification, is a specification for a programming language-agnostic, machine-readable interface definition language for describing, producing, consuming, and visualizing web services. OpenAPI documents describe API services and are represented in YAML or JSON formats.
- GitHub: https://github.com/topics/openapi
- Wikipedia: https://en.wikipedia.org/wiki/OpenAPI_Specification
- Repo: https://github.com/OAI/OpenAPI-Specification
- Created by: OpenAPI Initiative, Tony Tam, Darrel Miller, Mike Ralphson, Ron Ratovsky, Uri Sarid, Jason Harmon
- Released: August 10, 2011
- Related Topics: json-schema, raml, rest-api,
- Aliases: open-api, swagger-spec, swagger-specification, openapi-spec, openapi-specification, open-api-specification, oas, openapi-description,
- Last updated: 2026-07-08 00:22:40 UTC
- JSON Representation
https://github.com/grofei/ps-bconnectopenapi
Powershell module for the baramundi OpenAPI Interface. This module is NOT a product of baramundi software GmbH.
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https://github.com/n8n-code/n8n-nodes-0x-cross-chain
Cross-chain API bridging assets across EVM, Solana, Tron, HyperCore with real-time quotes and status tracking.
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https://github.com/n8n-code/n8n-nodes-ondo-finance
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https://github.com/marvinvista/agentic-ready
Audit whether agents can find, call, trust, price, and defend your B2B product.
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https://github.com/corrreia/dev-mcp
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https://github.com/dhslegen/disciplined-delivery-toolkit
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https://github.com/burin-labs/harn-openapi
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https://github.com/p-fruck/rt-openapi
Deterministic OpenAPI spec generation for RequestTracker REST 2.0 API
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https://github.com/tarundattagondi/mcp-curate
Turn an OpenAPI/Swagger spec into a high-quality, curated MCP server — consolidates endpoints into clear tools and proves it with an eval harness.
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Open-source stateless utility tools for AI agents: URL, DNS, TLS, OpenAPI, x402, JWT, CSV/JSON, cron, and composite reports.
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https://github.com/yfedoseev/pdf_oxide_api
The fastest, smallest, most secure self-hostable PDF REST API — stateless single-shot HTTP service wrapping the pdf_oxide Rust engine (text/markdown/html extraction, AcroForm fill with first-class Japanese/CJK, merge/split, pipeline). Distroless Docker, ~8-16MB.
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https://github.com/phaethix/api-doc-generator
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https://github.com/wavix/wavix-openapi
OpenAPI specification for the Wavix API
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https://github.com/jeremi/registry-docs
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https://github.com/rspereiratech/openapi-collection-generator-core
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https://github.com/akaliutau/spring-boot-3-reference-design
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https://github.com/walter0329/attributes
🔍 Validate method parameters, return values, and property access in PHP 8.3+ with compact, reusable attributes for efficient, framework-agnostic checking.
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https://github.com/redte-ch/redistributeme
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