microsoft/typespec

View on GitHub

Stars: 5.9k
Forks: 394
Open beginner issues: 0
Indexed issues: 1k
Avg merge: 2d 2h
Merged PRs (30d): 104

Dominant language: Java
License: MIT
Last GitHub push: Sep 18, 2026
Latest indexed: Sep 17, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: good first issue

Beginner friendly Everything

Open All

1,001 open issues indexed

Support Deterministic Naming for model suffix Response to Result Open

emitter:client:csharp feature

Difficulty 5/5 Over a week Newbie friendliness 20/100

microsoft/typespec#11993 · 1 comment · 1 reaction · Opened Sep 16, 2026
[playground] react, react-dom and @fluentui/* should be peerDependencies Open

bug design:needed triaged:core ui:playground

microsoft/typespec#11992 · 1 comment · 1 reaction · 1 assignee · Opened Sep 16, 2026
[Bug]: playground - Published package references monaco workers via hard-coded /assets/... URLs, breaking every consumer Open

bug design:needed triaged:core ui:playground

microsoft/typespec#11991 · 1 comment · 1 reaction · 1 assignee · Opened Sep 16, 2026
[Bug]: OpenAPI3 merges discriminated union envelopes when variants share a payload type Open

bug emitter:openapi3 triaged:core

microsoft/typespec#11979 · 2 comments · 1 reaction · 1 assignee · Opened Sep 15, 2026
[Bug]: http-client-js emits unused private contexts for empty clients Open

bug emitter:client:js

Difficulty 4/5 3-5 days Newbie friendliness 58/100

microsoft/typespec#11978 · 1 comment · 1 reaction · Opened Sep 15, 2026
[http-server-csharp]: Tests for standard ARM template coverage Open

emitter:service:csharp feature triaged:core

microsoft/typespec#11972 · 1 comment · 1 reaction · 1 assignee · Opened Sep 15, 2026
[http-client-csharp] Optional nullable properties cannot emit explicit JSON null Open

bug emitter:client:csharp

microsoft/typespec#11970 · 1 comment · 1 reaction · 1 assignee · Opened Sep 15, 2026
[Bug]: [Python] Modeless ARM LRO callback references undefined `response` Open

bug emitter:client:python

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

microsoft/typespec#11966 · 1 comment · 1 reaction · Opened Sep 15, 2026
[Bug]: FilterVisibility strips visibility decorators Open

compiler:core feature triaged:core

Difficulty 3/5 1-2 days Newbie friendliness 64/100

microsoft/typespec#11952 · 5 comments · 1 reaction · Opened Sep 12, 2026
[http-client-java] Generate synchronous and asynchronous SSE operations Open

emitter:client:java feature

microsoft/typespec#11942 · 1 comment · 1 reaction · 1 assignee · Opened Sep 11, 2026
[http-client-java] Generate polymorphic SSE event models Open

emitter:client:java feature

microsoft/typespec#11943 · 1 reaction · 1 assignee · Opened Sep 11, 2026
[http-client-java] Generate HTTP response-to-SSE decoding in service SDKs Open

emitter:client:java feature

microsoft/typespec#11941 · 1 reaction · 1 assignee · Opened Sep 11, 2026
[Bug]: Python emitter does not escape triple quotes in enum member documentation Open

bug emitter:client:python

Difficulty 3/5 1-2 days Newbie friendliness 74/100

microsoft/typespec#11881 · 1 comment · 1 reaction · Opened Sep 8, 2026
[Python] Remove obsolete CI scripts after CI Gate migration Open

emitter:client:python

microsoft/typespec#11873 · 1 reaction · 1 assignee · Opened Sep 7, 2026
Linter silently drops diagnostics on library templates instantiated by the user project Open

compiler:core design:needed triaged:core

microsoft/typespec#11861 · 1 reaction · 1 assignee · Opened Sep 4, 2026
Http-client-js operation response on the client doesn't carry the return type Open

emitter:client:js

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

microsoft/typespec#11853 · 1 reaction · Opened Sep 3, 2026
Config extends should it merge the linter entry Open

compiler:core design:needed triaged:core

Difficulty 3/5 1-2 days Newbie friendliness 68/100

microsoft/typespec#11849 · 1 reaction · Opened Sep 3, 2026
[http-client-csharp] Model factory loses namespaces for custom constructor parameter types Open

emitter:client:csharp

microsoft/typespec#11846 · 1 reaction · 1 assignee · Opened Sep 3, 2026
[http-client-csharp] Remove internal models referenced only by BinaryData union metadata Open

emitter:client:csharp

Difficulty 4/5 3-5 days Newbie friendliness 55/100

microsoft/typespec#11845 · 1 reaction · Opened Sep 3, 2026
Preserve union metadata when back compat preserves a property type Open

emitter:client:csharp

Difficulty 3/5 1-2 days Newbie friendliness 25/100

microsoft/typespec#11844 · 1 reaction · Opened Sep 2, 2026
[http-client-csharp] Do not include internal union variant types in the generated property description Open

bug emitter:client:csharp

Difficulty 3/5 1-2 days Newbie friendliness 72/100

microsoft/typespec#11843 · 1 reaction · Opened Sep 2, 2026
Support fractional seconds in the unixTimestamp datetime encoding Open

compiler:core design:needed feature triaged:core

microsoft/typespec#11840 · 4 comments · 1 reaction · 1 assignee · Opened Sep 2, 2026
Migrate typespec-vscode language client from push to pull configuration model Open

ide

Difficulty 4/5 3-5 days Newbie friendliness 68/100

microsoft/typespec#11829 · 1 reaction · Opened Sep 2, 2026
[Bug]: openapi3 silently drops every decorator written on a single `@body` property Open

bug emitter:openapi3 triaged:core

Difficulty 3/5 1-2 days Newbie friendliness 74/100

microsoft/typespec#11825 · 1 comment · 1 reaction · Opened Sep 2, 2026
[http-client-csharp] Parallel Azure SDK regeneration races on shared MSBuild intermediate files Open

bug emitter:client:csharp

microsoft/typespec#11822 · 2 reactions · 2 assignees · Opened Sep 2, 2026
[http-client-csharp] Add last-contract backward compatibility for model base types Open

emitter:client:csharp

microsoft/typespec#11816 · 1 comment · 1 reaction · 1 assignee · Opened Sep 2, 2026
Versioning misses a reference to a type removed before the referrer, emitting a dangling ref with no diagnostic Open

bug lib:versioning triaged:core

Difficulty 4/5 3-5 days Newbie friendliness 62/100

microsoft/typespec#11807 · 1 reaction · Opened Sep 1, 2026
[http-client-csharp] Model factory overload disambiguation should use C# overload-resolution analysis Open

emitter:client:csharp feature

Difficulty 5/5 Over a week Newbie friendliness 35/100

microsoft/typespec#11805 · 1 comment · 1 reaction · Opened Sep 1, 2026
[http-client-csharp] Support declarative generated property transformations without full replacement Open

emitter:client:csharp feature

Difficulty 5/5 Over a week Newbie friendliness 25/100

microsoft/typespec#11804 · 3 comments · 1 reaction · Opened Sep 1, 2026
[http-client-csharp] Positional constructor parameter restoration can silently mis-bind after a reorder Open

bug emitter:client:csharp

Difficulty 5/5 Over a week Newbie friendliness 35/100

microsoft/typespec#11787 · 1 comment · 1 reaction · Opened Aug 28, 2026
[http-client-csharp] Disambiguate property names that collide after date-time normalization Open

bug emitter:client:csharp

Difficulty 5/5 Over a week Newbie friendliness 35/100

microsoft/typespec#11784 · 1 comment · 1 reaction · Opened Aug 28, 2026
[http-client-csharp] Resolve GA date-time name ownership for projected properties Open

bug emitter:client:csharp

Difficulty 5/5 Over a week Newbie friendliness 35/100

microsoft/typespec#11783 · 1 comment · 1 reaction · Opened Aug 28, 2026
Unify semantic property matching across generated and custom model bases Open

emitter:client:csharp feature

Difficulty 5/5 Over a week Newbie friendliness 35/100

microsoft/typespec#11765 · 1 comment · 1 reaction · Opened Aug 26, 2026
protobuf emitter maps unknown to Any (should have an option for Struct) Open

design:needed emitter:protobuf triaged:core

Difficulty 4/5 3-5 days Newbie friendliness 48/100

microsoft/typespec#11764 · 1 comment · 1 reaction · Opened Aug 25, 2026
[http-client-python] Add SSE reconnection Open

emitter:client:python feature

microsoft/typespec#11761 · 2 comments · 1 reaction · 1 assignee · Opened Aug 25, 2026
Address Missing Nullable Value Guard in CreateRequest Method for DateTime Params Open

bug emitter:client:csharp

microsoft/typespec#11759 · 1 comment · 2 reactions · 2 assignees · Opened Aug 25, 2026
[java] prototype, allow `@override` decorator apply to protocol method Open

emitter:client:java feature

microsoft/typespec#11757 · 2 comments · 1 reaction · 1 assignee · Opened Aug 25, 2026
[Bug]: openapi3 1.15.0 emits a duplicate, identical schema with a `ReadOrCreateOrUpdateOrDeleteOrQuery` suffix for types shared between an operation and an unreachable derived model Open

bug emitter:openapi3 triaged:core

Difficulty 4/5 3-5 days Newbie friendliness 50/100

microsoft/typespec#11756 · 1 comment · 1 reaction · Opened Aug 25, 2026
[python] add test case for https://github.com/microsoft/typespec/pull/11613 Open

emitter:client:python feature

microsoft/typespec#11754 · 2 comments · 2 reactions · 2 assignees · Opened Aug 25, 2026
[Bug]: @terminalEvent on a model-payload variant emits an unconstrained oneOf branch in OpenAPI 3.2 SSE output Open

bug emitter:openapi3 triaged:core

Difficulty 2/5 1-3 hours Newbie friendliness 82/100

microsoft/typespec#11747 · 1 comment · 1 reaction · Opened Aug 23, 2026
openapi3 convert - make component responses models Open

feature lib:openapi openapi3:converter

microsoft/typespec#11734 · 2 comments · 2 reactions · 2 assignees · Opened Aug 20, 2026
[Bug]: [http-server-csharp] Model with a `Record<unknown>[]` property generates C# that does not compile (missing `using System.Text.Json.Nodes;`) Open

bug emitter:service:csharp triaged:core

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

microsoft/typespec#11733 · 2 comments · 1 reaction · Opened Aug 19, 2026
[Bug]: [Python] Emitted code failed linting Open

bug emitter:client:python

Difficulty 1/5 Under an hour Newbie friendliness 85/100

microsoft/typespec#11729 · 3 comments · 1 reaction · Opened Aug 19, 2026
[python] add test case for https://github.com/microsoft/typespec/pull/11677 Open

emitter:client:python feature

microsoft/typespec#11721 · 1 comment · 2 reactions · 2 assignees · Opened Aug 19, 2026
[Bug]: Quirks while deriving models Open

bug compiler:core triaged:core

Difficulty 4/5 3-5 days Newbie friendliness 42/100

microsoft/typespec#11720 · 4 comments · 1 reaction · Opened Aug 19, 2026
[http-client-csharp] Support composes client option for extension properties Open

emitter:client:csharp feature

microsoft/typespec#11715 · 1 comment · 1 reaction · 1 assignee · Opened Aug 18, 2026
Align @experimental emitterScope with the standard scope convention Open

emitter:client:all feature

Difficulty 4/5 3-5 days Newbie friendliness 55/100

microsoft/typespec#11702 · 1 comment · 1 reaction · Opened Aug 17, 2026
[Bug]: Management emitter leaks into Coverage Overview and lacks a C# table header Open

bug emitter:client:csharp spector

microsoft/typespec#11699 · 1 comment · 1 reaction · 1 assignee · Opened Aug 17, 2026
C# acronym normalization ignores management SDK ApiCompat contracts Open

bug emitter:client:csharp

microsoft/typespec#11696 · 4 comments · 1 reaction · 1 assignee · Opened Aug 17, 2026
Enhance @experimental with diagnostic IDs and dependencies Open

emitter:client:csharp feature lib:http

Difficulty 5/5 Over a week Newbie friendliness 45/100

microsoft/typespec#11690 · 1 comment · 1 reaction · Opened Aug 15, 2026

microsoft/typespec

Get new issues in your inbox