https://scalar.com/resources/changelog Releases across Scalar products — API Client, API Reference, Agent, and Mock Server Fri, 26 Jun 2026 00:00:00 GMT https://scalar.com/resources/changelog/api-client#1.1.11-2026-06-26 https://scalar.com/resources/changelog/api-client#1.1.11-2026-06-26 Fri, 26 Jun 2026 00:00:00 GMT Synced example pickers and improved array parameter display Example selections now sync across all operations, making it easier to see the same use case throughout your API. Array parameters in deepObject style also display with the correct trailing brackets to match the actual request. Selecting a request or response example now applies that choice to every operation that defines the same example Array parameters in deepObject style now show trailing brackets (like filter[ids][]) so the table matches the serialized request Editing array parameter values preserves the array type when writing back to the request Read full release notes https://scalar.com/resources/changelog/api-reference#1.62.0-2026-06-26 https://scalar.com/resources/changelog/api-reference#1.62.0-2026-06-26 Fri, 26 Jun 2026 00:00:00 GMT API Reference UI localization, AsyncAPI protocol filters, and custom legal links This release adds built-in localization support for seven languages with automatic RTL layout for Arabic, introduces protocol and server filters to AsyncAPI navigation, and ships an OpenAPI extension for custom legal links. Configure API Reference UI language with built-in English, Russian, Spanish, French, German, Simplified Chinese, and Arabic translations, plus automatic RTL direction for Arabic locales Filter AsyncAPI sidebar navigation by protocol and server to narrow down operations reachable over a selected protocol or server Render custom legal links (privacy policy, imprint) in the introduction using the new x-scalar-links OpenAPI extension Request and response example pickers now sync across operations—selecting an example on one operation selects it on every operation that defines it Show propertyNames type and format constraints (like string · uuid) for map keys in schema documentation Read full release notes https://scalar.com/resources/changelog/api-client#1.1.10-2026-06-22 https://scalar.com/resources/changelog/api-client#1.1.10-2026-06-22 Mon, 22 Jun 2026 00:00:00 GMT Request signing, auth token fixes, and parameter editing improvements This release adds a new hook for request signing use cases, fixes auth tokens being dropped when document names contain spaces or special characters, and improves the behavior of query parameter renaming in the request editor. New requestBuilt hook and onRequestBuilt callback receive the exact fetch Request sent over the wire, making request body signing possible for multipart/form-data and other use cases Fixed Bearer tokens being dropped when documents loaded via sources have non-slug-safe names (spaces, special characters) Renaming auto-expanded query parameter keys now commits the change on blur and persists in both the request and table Header mutations in the new requestBuilt hook apply to the outgoing request (unlike onBeforeRequest which rebuilds after the callback) Query parameters not defined in the schema are now surfaced as their own rows after renaming Read full release notes https://scalar.com/resources/changelog/api-reference#1.61.0-2026-06-22 https://scalar.com/resources/changelog/api-reference#1.61.0-2026-06-22 Mon, 22 Jun 2026 00:00:00 GMT AsyncAPI operations, messages, and protocols now render inline This release brings AsyncAPI documentation to parity with dedicated AsyncAPI tools by rendering operations and their message payloads inside each channel. Server and protocol labels now appear throughout, making it clear which servers and transports each channel and message uses. AsyncAPI operations and their messages (with payload and header schemas) now render nested inside each channel in both modern and classic layouts Channel headers show which servers they are available on and their protocols, while message headers display every protocol they are carried over New requestBuilt client plugin hook and onRequestBuilt callback expose the exact fetch Request sent over the wire, enabling request signing with accurate body hashes Fixed oneOf and anyOf being dropped when nested inside allOf, so composition variants now render alongside merged base properties Object properties factored out alongside composition keywords (anyOf, oneOf, allOf, not) now render correctly instead of being hidden Read full release notes https://scalar.com/resources/changelog/mock-server#0.12.0-2026-06-22 https://scalar.com/resources/changelog/mock-server#0.12.0-2026-06-22 Mon, 22 Jun 2026 00:00:00 GMT Mock AsyncAPI documents and validate all parameter styles The mock server can now generate event-driven APIs from AsyncAPI 3.1 documents, serving channels over WebSocket and Server-Sent Events. Request validation has been extended to cover header and cookie parameters, and all OpenAPI serialization styles are now deserialized before validation. AsyncAPI 3.1 documents are mocked through a new createAsyncApiMockServer function that serves channels over WebSocket and SSE. Messages are generated from payload schemas using the same generator as REST endpoints, and custom transports can be added through an extension point. The Docker mock server auto-detects AsyncAPI documents and starts the event-driven engine automatically. Header and cookie parameters are validated against their schemas, with case-insensitive header matching and spec-compliant filtering of Accept, Content-Type, and Authorization. Array and object parameters are deserialized by their OpenAPI style (form, simple, deepObject, label, matrix, and delimiter styles) before validation, so complex query strings and path segments validate correctly. Read full release notes https://scalar.com/resources/changelog/api-client#1.1.9-2026-06-17 https://scalar.com/resources/changelog/api-client#1.1.9-2026-06-17 Wed, 17 Jun 2026 00:00:00 GMT Editable Watch Mode sources and improved input performance This release makes it easier to manage Watch Mode documents and improves responsiveness across request, authentication, and environment variable tables. Edit the Watch Mode source URL directly in document settings without needing to delete and re-import your collection Faster, more responsive input fields for parameters, headers, and environment variables with the new lightweight CodeInputLite component OAuth2 and OpenID Connect token requests now route through the desktop app's secure IPC layer Read full release notes https://scalar.com/resources/changelog/api-reference#1.60.0-2026-06-17 https://scalar.com/resources/changelog/api-reference#1.60.0-2026-06-17 Wed, 17 Jun 2026 00:00:00 GMT Plugin view slots, sidebar customization, and layout polish This release adds a new plugin extension point at the top of your documentation and lets plugin views appear in the sidebar. It also ships a handful of fixes that improve deep linking, schema rendering, and responsive layout behavior. Plugins can now inject components before the introduction section with the new content.start view slot Plugin views can opt in to sidebar navigation with the sidebar visibility option Deep links to nested schema properties now expand collapsed sections and scroll into view automatically The introduction loading skeleton now mirrors the real layout so the page does not jump when your document loads Fixed sidebar overlap at exactly 1000px wide by aligning mobile and desktop breakpoints Read full release notes https://scalar.com/resources/changelog/mock-server#0.11.1-2026-06-17 https://scalar.com/resources/changelog/mock-server#0.11.1-2026-06-17 Wed, 17 Jun 2026 00:00:00 GMT Smarter response selection and format fixes This release improves how the mock server chooses which response to return when your API defines multiple status codes, and fixes edge cases with line-delimited JSON formats and array responses. The mock server now prefers 2xx success responses over error codes when no specific status is requested, making default mocks more realistic JSONL and NDJSON responses are now correctly formatted as single-line records instead of pretty-printed JSON Singular examples are automatically wrapped in arrays when the response schema expects an array Read full release notes https://scalar.com/resources/changelog/api-client#1.1.8-2026-06-11 https://scalar.com/resources/changelog/api-client#1.1.8-2026-06-11 Thu, 11 Jun 2026 00:00:00 GMT Path item references and SDK tab sync This release fixes OpenAPI specs that use path item references and improves code example consistency across the client. Operations now appear correctly when OpenAPI paths use $ref to reference components.pathItems Authentication scheme dropdown now opens reliably when multiple API reference modals are present Selecting a language in Client Libraries now switches all operation code examples to that language Read full release notes https://scalar.com/resources/changelog/api-reference#1.59.3-2026-06-11 https://scalar.com/resources/changelog/api-reference#1.59.3-2026-06-11 Thu, 11 Jun 2026 00:00:00 GMT Path item references, redirects, and SDK tab sync This release fixes rendering when path items use component references, improves navigation for custom section labels, and syncs SDK installation tabs with code examples across all operations. Operations now appear correctly when OpenAPI path items reference components.pathItems instead of inlining methods Old model bookmarks automatically redirect to custom section slugs when you have renamed the models section Selecting a language in SDK installation tabs now switches every operation's code sample to that language Empty info link lists no longer push down the download button on mobile Read full release notes https://scalar.com/resources/changelog/mock-server#0.11.0-2026-06-11 https://scalar.com/resources/changelog/mock-server#0.11.0-2026-06-11 Thu, 11 Jun 2026 00:00:00 GMT Request validation and improved authentication The mock server now validates incoming requests against your OpenAPI schema by default, returning detailed contract violations instead of mock responses when parameters or bodies do not match. Authentication evaluation has been corrected to follow the OpenAPI specification. Request validation is now on by default—path, query parameters, and JSON bodies are checked against the schema, returning 422 with violation details when they do not match Use the Prefer header to control mock responses: code=404 picks a specific status, example=bob selects a named example from the examples map Authentication now evaluates security requirements as OR-of-ANDs, inherits document-level security when operations define none, and validates credential shape for Basic and Bearer tokens Set validateRequest: false to restore previous behavior and always return mock responses Read full release notes https://scalar.com/resources/changelog/api-client#1.1.6-2026-06-09 https://scalar.com/resources/changelog/api-client#1.1.6-2026-06-09 Tue, 09 Jun 2026 00:00:00 GMT Polish and bug fixes shipped Read full release notes https://scalar.com/resources/changelog/api-reference#1.59.2-2026-06-09 https://scalar.com/resources/changelog/api-reference#1.59.2-2026-06-09 Tue, 09 Jun 2026 00:00:00 GMT Restore deprecated source field for SDK installation commands The deprecated source field on x-scalar-sdk-installation is now supported again for backward compatibility. When present, it is automatically appended to the description as a fenced code block, or used on its own when there is no description. The description field remains the recommended way to document installation commands. Read full release notes https://scalar.com/resources/changelog/api-reference#1.59.1-2026-06-09 https://scalar.com/resources/changelog/api-reference#1.59.1-2026-06-09 Tue, 09 Jun 2026 00:00:00 GMT Fixed examples panel layout in operation view Read full release notes https://scalar.com/resources/changelog/api-client#1.1.5-2026-06-08 https://scalar.com/resources/changelog/api-client#1.1.5-2026-06-08 Mon, 08 Jun 2026 00:00:00 GMT SDK code samples, AsyncAPI servers, and form encoding fixes This release adds support for SDK-generated code samples from popular tools, introduces an AsyncAPI server selector, and fixes how form data is sent to match your API specification. Read custom code samples from x-scalar-examples, x-stainless-snippets, x-stainless-examples, and x-readme.code-samples extensions Added AsyncAPI server selector with variable editing and persistence Fixed multipart and urlencoded form data to respect OpenAPI encoding styles like deepObject Simplified the client picker when only one option is available Read full release notes https://scalar.com/resources/changelog/api-reference#1.59.0-2026-06-08 https://scalar.com/resources/changelog/api-reference#1.59.0-2026-06-08 Mon, 08 Jun 2026 00:00:00 GMT AsyncAPI server and channel parameters, CSP nonce support, and expanded schemas This release brings full AsyncAPI server selection and channel parameter rendering to the API reference, adds Content Security Policy support with a nonce option for strict script-src, and introduces an expandAllSchemaProperties configuration to show nested properties by default. AsyncAPI channel address parameters are now rendered in the API reference, showing their enum, default, and example values alongside operation parameters A server selector for AsyncAPI documents displays constructed connection URLs and persists selection and variable changes to the workspace store Pass a nonce option to run the API reference under a strict script-src Content Security Policy with no unsafe-inline or unsafe-eval The new expandAllSchemaProperties configuration expands nested schema properties by default while keeping manual collapse controls available Custom SDK installation instructions from x-scalar-sdk-installation now render in the introduction card with support for rich Markdown and multiple code blocks per language Read full release notes https://scalar.com/resources/changelog/agent#0.12.7-2026-06-08 https://scalar.com/resources/changelog/agent#0.12.7-2026-06-08 Mon, 08 Jun 2026 00:00:00 GMT Polish and bug fixes shipped Read full release notes https://scalar.com/resources/changelog/mock-server#0.10.17-2026-06-08 https://scalar.com/resources/changelog/mock-server#0.10.17-2026-06-08 Mon, 08 Jun 2026 00:00:00 GMT Improved OpenAPI reference resolution performance The mock server now resolves OpenAPI $ref nodes on demand instead of processing the entire document upfront, improving startup time and memory usage for large specifications. References are now resolved lazily only when needed for generating responses Nested references (like a Planet referencing a User) now resolve correctly in examples Broken references are handled gracefully without failing document processing Read full release notes https://scalar.com/resources/changelog/api-client#1.1.4-2026-06-01 https://scalar.com/resources/changelog/api-client#1.1.4-2026-06-01 Mon, 01 Jun 2026 00:00:00 GMT Code splitting, WebSocket support, and performance improvements This release introduces a new ESM standalone build with code splitting that reduces the initial bundle size by ~570 KB, adds WebSocket session support for AsyncAPI operations, and improves first-request performance when using scripts. New ESM standalone build with code splitting reduces initial load from 3.32 MB to 2.73 MB Fixed code samples with duplicate languages (like Python and Python Async) now appearing as separate selectable entries Scripts sandbox now warms up on mount to eliminate lag on the first request Added WebSocket session transport with plugin hooks for AsyncAPI operations Read full release notes https://scalar.com/resources/changelog/api-reference#1.58.0-2026-06-01 https://scalar.com/resources/changelog/api-reference#1.58.0-2026-06-01 Mon, 01 Jun 2026 00:00:00 GMT AsyncAPI support and improved bundle performance This release brings AsyncAPI documents closer to feature parity with OpenAPI. AsyncAPI specs now render schemas as Models, display channels in the content area, and surface introduction headings in the sidebar and search. We also shipped a new ESM standalone bundle with code splitting that reduces the initial load by over 500 KB. AsyncAPI schemas render as Models in the sidebar, content, and search alongside OpenAPI schemas AsyncAPI channels appear in the content area with their address and description, grouped by tags when configured New ESM standalone bundle with code splitting drops initial load from 3.32 MB to 2.73 MB by lazy-loading the API client modal and icon library Configure the Models section label with modelsSectionLabel to use OpenAPI-style Schemas terminology or custom labels Customize the browser tab title with setPageTitle, called whenever the section in view changes Read full release notes https://scalar.com/resources/changelog/api-reference#1.57.5-2026-05-27 https://scalar.com/resources/changelog/api-reference#1.57.5-2026-05-27 Wed, 27 May 2026 00:00:00 GMT Response content type selector works with expanded responses When every response is expanded by default, the content type picker now stays above the response body and remains clickable. Read full release notes https://scalar.com/resources/changelog/api-client#1.1.3-2026-05-22 https://scalar.com/resources/changelog/api-client#1.1.3-2026-05-22 Fri, 22 May 2026 00:00:00 GMT Script execution and build reliability improvements This release fixes script execution in production builds and strengthens environment configuration validation to catch missing variables before deployment. Fixed pre-request and post-request scripts not running in production Electron builds Build now fails early when required environment variables are missing Added analytics tracking for document saves and registry sync operations Read full release notes https://scalar.com/resources/changelog/api-client#1.1.2-2026-05-21 https://scalar.com/resources/changelog/api-client#1.1.2-2026-05-21 Thu, 21 May 2026 00:00:00 GMT Logout now works correctly in the desktop app We fixed a navigation issue that caused the Electron desktop app to break when logging out, and improved how environment variables are loaded across different build targets. Read full release notes https://scalar.com/resources/changelog/api-client#1.1.1-2026-05-21 https://scalar.com/resources/changelog/api-client#1.1.1-2026-05-21 Thu, 21 May 2026 00:00:00 GMT Improved multipart forms and better security This release brings cleaner multipart form handling, better deep-linking from API Reference, and hardened security across the board. Nested object properties in multipart forms now expand into individual editable rows and serialize as clean JSON parts Opening the client from API Reference now lands you directly on the selected operation Response previews are now protected against XSS and referrer leakage Pre-request and post-response scripts run in an isolated sandbox, removing unsafe-eval from the main app Web client now defaults to proxy.scalar.com while desktop skips the proxy unless you configure one Read full release notes https://scalar.com/resources/changelog/api-reference#1.57.3-2026-05-21 https://scalar.com/resources/changelog/api-reference#1.57.3-2026-05-21 Thu, 21 May 2026 00:00:00 GMT Custom fetch support and clearer schema examples You can now pass a custom fetch implementation through API Reference configuration so Test Request calls honor options like credentials. Schema examples also render more reliably for null, whitespace-only, and value or externalValue shapes. Added customFetch configuration and deprecated the previous fetch option with an automatic migration path. Fixed rendering for null, whitespace-only, and value or externalValue schema examples. Read full release notes https://scalar.com/resources/changelog/api-client#1.1.0-2026-05-16 https://scalar.com/resources/changelog/api-client#1.1.0-2026-05-16 Sat, 16 May 2026 00:00:00 GMT Improved sidebar filtering and analytics fixes This release brings better document organization with combined title and namespace filtering in the sidebar, plus fixes for analytics tracking and content security. Sidebar now filters documents by both title and namespace together with clearer controls Fixed analytics events not tracking login and logout actions Improved team picker to match dashboard design Relaxed image loading restrictions to support HTTPS sources Read full release notes https://scalar.com/resources/changelog/api-reference#1.57.2-2026-05-15 https://scalar.com/resources/changelog/api-reference#1.57.2-2026-05-15 Fri, 15 May 2026 00:00:00 GMT Security badge layout stays intact The security badge no longer shrinks in tight layouts, so operation headers stay readable on smaller screens. Read full release notes https://scalar.com/resources/changelog/api-client#1.0.13-2026-05-14 https://scalar.com/resources/changelog/api-client#1.0.13-2026-05-14 Thu, 14 May 2026 00:00:00 GMT Scalar Client 1.0 — team workspaces, registry sync, conflict resolution, and a rebuilt experience Intro walkthrough — What's new in Scalar Client 1.0 Scalar Client 1.0 is the first major release of the open-source HTTP client as a focused desktop and web app. Workspaces are now built around teams and the Scalar Registry: you can sync in real time, resolve conflicts when edits diverge, and manage API descriptions and versions without leaving the client. Local workspaces stay fast and offline-friendly with explicit save and revert before anything ships upstream. Team workspaces and Scalar Registry Team workspaces and Scalar Registry Team workspaces and Scalar Registry First-class team workspaces with a stable team identity that survives slug renames on the server. Live sync with the Scalar Registry so shared API descriptions stay aligned across machines. Conflict detection and resolution when local edits and registry changes disagree. Team switching from the header menu, with routing that follows the active team after sign-in. Returning to a workspace restores the tabs and routes you had open last time. Local workspaces Local workspaces Local workspaces Save and revert flows for local-only drafts so you can experiment safely before publishing. Clear separation between personal local workspaces and team-backed workspaces. IndexedDB-backed persistence with a migration path from older localStorage installs. Registry from the client Registry from the client Registry from the client Add, update, and remove API descriptions tied to the registry without switching tools. Create and manage document versions from the same UI you use to send requests. Integrated registry adapter so the client speaks the same contracts as the hosted product. Client shell, layout, and polish Layout tuned for small screens: breadcrumbs tuck away, workspace switching moves into the menu, and the address bar stacks cleanly with send actions. Command palette surfaces inline validation instead of silently disabling invalid actions. Electron window transparency and splash handling so team workspace reloads and resize flashes feel steadier. Monaco editor bundling moved to ESM-aligned workers for a more reliable desktop build. Read the full changelog on GitHub https://scalar.com/resources/changelog/api-reference#1.57.0-2026-05-14 https://scalar.com/resources/changelog/api-reference#1.57.0-2026-05-14 Thu, 14 May 2026 00:00:00 GMT AsyncAPI support, better search, and cleaner teardown API Reference now treats AsyncAPI documents as first-class citizens alongside OpenAPI, with clearer badges, download labels, and improved search across polymorphic schemas. Added AsyncAPI badges and a Download AsyncAPI Document action. Improved search ranking for parameters, request bodies, and model fields, including oneOf, anyOf, and allOf schemas. Fixed listener leaks when createApiReference instances are destroyed repeatedly. Raised the mobile sidebar z-index so it stays above page content. Resolved $ref values in additionalProperties before rendering schemas. Read full release notes https://scalar.com/resources/changelog/agent#0.12.0-2026-05-14 https://scalar.com/resources/changelog/agent#0.12.0-2026-05-14 Thu, 14 May 2026 00:00:00 GMT AsyncAPI documents in the Agent workspace The Agent chat UI now understands workspace documents that can be either OpenAPI or AsyncAPI, so mixed API descriptions load through the same flow. Read full release notes https://scalar.com/resources/changelog/agent#0.10.14-2026-05-04 https://scalar.com/resources/changelog/agent#0.10.14-2026-05-04 Mon, 04 May 2026 00:00:00 GMT Smaller initial bundle for the chat UI Tailwind CSS is now code-split so the Agent chat interface loads less CSS up front. Read full release notes https://scalar.com/resources/changelog/agent#0.10.10-2026-04-27 https://scalar.com/resources/changelog/agent#0.10.10-2026-04-27 Mon, 27 Apr 2026 00:00:00 GMT More reliable document loading from the platform Document fetches now include the platform token so authenticated doc requests succeed consistently. Read full release notes https://scalar.com/resources/changelog/agent#0.10.9-2026-04-26 https://scalar.com/resources/changelog/agent#0.10.9-2026-04-26 Sun, 26 Apr 2026 00:00:00 GMT Clearer messaging around Agent credits We updated the copy around Agent credits so free limits and usage are easier to understand in the chat UI. Read full release notes https://scalar.com/resources/changelog/mock-server#0.10.2-2026-04-21 https://scalar.com/resources/changelog/mock-server#0.10.2-2026-04-21 Tue, 21 Apr 2026 00:00:00 GMT OAuth refresh endpoints in mock authentication routes Mock Server now generates authentication routes for OAuth refreshUrl endpoints defined in your OpenAPI security schemes. Read full release notes https://scalar.com/resources/changelog/mock-server#0.10.0-2026-04-15 https://scalar.com/resources/changelog/mock-server#0.10.0-2026-04-15 Wed, 15 Apr 2026 00:00:00 GMT Random data generation for mock responses Mock Server can now generate random but schema-aware data for responses, making local testing feel closer to real API behavior. Read full release notes