feat: enable channels generator for openapi

[jonaslagoni]

Note

OpenAPI HTTP client generation

• Add OpenAPI support to TypeScript channels (http_client) via new openapi.ts and wiring in channels/index.ts to generate per-operation fetch clients
• Update HTTP fetch protocol: switch response parsing to unmarshal(...), emit common types once, and enhance integration with parameters (path building)
• Extend OpenAPI parameters: add getChannelWithParameters and refine serializeUrl output

Tooling, tests, docs

• Fix YAML generator indentation in MCP config tools
• Normalize bundled docs keys and add AI Assistants Q&A; minor docs content updates
• Add OpenAPI channels tests, snapshots, and runtime example including channels (http_client)

^{Written by Cursor Bugbot for commit ea148b7. This will update automatically on new commits. Configure here.}

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Project	Deployment	Review	Updated (UTC)
the-codegen-project	Ready	Preview, Comment	Jan 22, 2026 8:51pm
the-codegen-project-mcp	Ready	Preview, Comment	Jan 22, 2026 8:51pm

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[cursor]

Cursor Bugbot has reviewed your changes and found 2 potential issues.

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[cursor]

Invalid TypeScript generated for array response types

High Severity

When an OpenAPI operation returns an array type (like Pet[]), the generated code produces invalid TypeScript: Pet[].unmarshal(rawData). This is syntactically invalid because you cannot call methods on type literals. The snapshot at line 1330 confirms this generates non-compiling code. This affects any OpenAPI GET operation returning arrays.

Additional Locations (1)

• src/codegen/generators/typescript/channels/openapi.ts#L113-L132

 

[cursor]

OpenAPI servers not extracted, defaults to localhost

Medium Severity

The renderHttpFetchClient call doesn't pass the servers parameter, even though OpenAPI documents define server URLs (e.g., http://petstore.swagger.io/v2 in the test spec). The generated HTTP clients default to 'localhost:3000' instead of the actual API server from the spec. Users must manually override the server for every request, defeating the purpose of defining servers in the OpenAPI document.