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fix(sdk,plugins): an @App's Skilled OpenAPI credential resolver reaches execute_action and this.callTool() of an operation - #1120
A SkilledOpenApiCredentialResolver can be declared in three places: SkilledOpenApiPlugin.init({ providers }), the @App({ providers }) that installs the plugin, and @FrontMcp({ providers }). The nearest one wins. run_workflow honored all three.
When the plugin was installed in an @App that declared the resolver, two paths still got the built-in resolver, which reads credentials, or the server's resolver:
execute_action, which runs an action through its operation tool;
server code that calls an operation tool with this.callTool('<bundleId>.<operationId>').
The cause: the plugin built its operation tools on the scope's providers, which don't include the app's. The plugin's own tools, such as run_workflow, are built on the plugin's providers, which resolve through the plugin, then the app, then the server.
The fix:
SDK: a provider factory can now inject ProviderRegistry. It gets the registry that builds it. For a GLOBAL provider, that's the registry that declares it, so a plugin's provider gets the plugin's own providers. This is two one-line checks in ProviderRegistry: one for GLOBAL factories, one for CONTEXT factories built from views. Before this change, injecting ProviderRegistry built a new, empty registry.
Plugin: the bundle-sync provider injects the plugin's providers and builds the operation tools on them. This also removes a cast of scope.providers to ProviderRegistry. The operation tools now resolve their providers exactly as run_workflow does, at all three levels, including on a splitByApp server.
Scenarios covered: F3 (a custom resolver, such as a vault) and E6 (execute_action through the operation tool).
User-facing change
What changed:
With the plugin installed in an @App, execute_action and this.callTool('<bundleId>.<operationId>') now use the resolver that app declares, as run_workflow does.
A provider factory can inject ProviderRegistry to get the providers it is built in.
Before → after:
An @App({ providers }) resolver reached run_workflow only. The operation tools got the server's resolver or the built-in one, which reads credentials. → All three paths use the nearest resolver: init({ providers }), then the app's, then the server's, then the built-in one.
inject: () => [ProviderRegistry] gave a new, empty registry. → It gives the registry that builds the provider. For a plugin's GLOBAL provider, that's the plugin's own providers.
frontmcp.dev pages affected (if known): the Skilled OpenAPI plugin page (credentials section), and the plugin authoring and providers pages (factory inject).
Skills catalog entries updated:
frontmcp-development/references/create-plugin.md: injecting ProviderRegistry, and building a runtime tool on the plugin's providers.
frontmcp-development/references/openapi-adapter.md: where the resolver can be declared, and that it answers all three paths.
The plugin README no longer documents the limit.
Tests
Added:
plugin-registration.integration.spec.ts, in a real server, checking the authorization header that run_workflow, execute_action and a server tool's this.callTool() each send:
the plugin in an @App that declares the resolver: all three use it (this failed before the fix);
the same on a splitByApp server (this failed before the fix);
the app's resolver over the server's, when another app's tool calls the operation (this failed before the fix);
init({ providers }) over the app's;
init({ providers }) and @FrontMcp({ providers }) on a server-level plugin, and the built-in resolver when none is declared, now on all three paths.
plugin.spec.ts: the operation tools are built on the providers the bundle-sync factory gets.
provider.registry.spec.ts: a GLOBAL factory that injects ProviderRegistry gets the registry that declares it, which resolves through its parent; a CONTEXT factory gets the registry that builds it.
E2E app-resolver.e2e.spec.ts, with a new entrypoint that installs the plugin and its resolver in an @App, and nothing on the server: run_workflow and execute_action both send the token the resolver reads (this failed before the fix).
nx test plugin-skilled-openapi: 50 suites, 723 tests passed.
nx test sdk: 691 suites, 9643 tests passed.
nx test skills: 3 suites, 249 tests passed.
nx test demo-e2e-skilled-openapi: 9 suites, 83 tests passed.
The browser bundle-size e2e: 12 suites, 63 tests passed. The budgets are set to the measured sizes:
create() + one tool grows by 44 bytes, to 1,289,009;
create() + WebMcpPlugin + one tool grows by 44 bytes, to 1,296,199;
the initial chunk of a Vite app doesn't change (763,249).
nx run-many -t typecheck for sdk, plugin-skilled-openapi, demo-e2e-skilled-openapi and demo-e2e-bundle-size passed.
tsc --noEmit on the SDK's and the plugin's tsconfig.lib.json, prettier and eslint (0 errors) passed.
Summary by CodeRabbit
Bug Fixes
Credential resolver settings now apply consistently to workflows, actions, and operation tools, following provider precedence across plugin, app, and server configuration.
Provider factories receive the registry associated with their provider, allowing runtime-created tools to resolve providers through the plugin, installing app, and server.
Documentation
Updated plugin and OpenAPI guidance to explain provider and credential resolver behavior.
…es execute_action and this.callTool() of an operation
With the plugin installed in an @app that declares SkilledOpenApiCredentialResolver, run_workflow used the app's
resolver, but execute_action and server code calling an operation tool with this.callTool('<bundleId>.<operationId>')
got the server's resolver, or the built-in one that reads credentials. The operation tools were built on the scope's
providers, which don't include the app's.
A provider factory can now inject ProviderRegistry: it gets the registry that builds it, which for a GLOBAL provider
is the one that declares it. Injecting it used to build a new, empty registry. The plugin's bundle-sync provider
injects the plugin's own providers and builds the operation tools on them, so they resolve the resolver as
run_workflow does: init({ providers }), then the app's, then the server's, then the built-in one.
The e2e app gains an entrypoint with the plugin and its resolver in an @app. The browser bundle budgets take the 44
bytes of the two checks.
The SDK now injects the active ProviderRegistry into factories. Skilled OpenAPI operation tools use the plugin registry, and tests cover credential resolver selection across workflow, action, and tool calls. The e2e bundle size limits each increase by 44 bytes.
BundleSyncService passes the plugin’s registry to OperationToolFactory. Unit tests verify that operation tools receive plugin providers. The guide describes provider resolution through plugin, app, and server providers.
Integration tests cover resolver selection for workflow, action, and operation-tool calls, including plugin, app, and server provider precedence. The e2e app configures an app-level resolver and checks workflow and action results and authorization headers. Documentation describes the resolver configuration and call paths.
sequenceDiagram
participant Caller
participant SkilledOpenApiPlugin
participant ProviderRegistry
participant BillingAPI
Caller->>SkilledOpenApiPlugin: Call run_workflow, execute_action, or this.callTool()
SkilledOpenApiPlugin->>ProviderRegistry: Resolve SkilledOpenApiCredentialResolver
ProviderRegistry-->>SkilledOpenApiPlugin: Return resolver from plugin, app, or server providers
SkilledOpenApiPlugin->>BillingAPI: Send request with resolver-provided authorization
Loading
Possibly related PRs
agentfront/frontmcp#1088: Adds production-configured Skilled OpenAPI e2e coverage, which this PR extends with app-level resolver behavior.
Suggested reviewers:alexmercerpo
Merge Risk: Moderate · previous review acbe2
A plugin using a separate SDK copy may fail when it injects the provider registry. Make that injection work across SDK copies before merging, unless this compatibility risk is explicitly accepted.
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The title names the main change: an @App's Skilled OpenAPI credential resolver now reaches execute_action and this.callTool() for an operation. The changeset does this. It adds ProviderRegistry inject…
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The description follows the repository template. It has the 'What and why' section, which explains the three resolver declaration points, the cause, and the fix. It has the 'User-facing change' sectio…
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The title names the main change: an @App's Skilled OpenAPI credential resolver now reaches execute_action and this.callTool() for an operation. The changeset does this. It adds ProviderRegistry injection in the SDK and passes the plugin's providers to the operation tool factory, with tests for all three call paths. The title is specific and fits the scope, and the fix(sdk,plugins) prefix matches the touched packages. It is a little long at 122 characters, but it is still clear.
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The description follows the repository template. It has the 'What and why' section, which explains the three resolver declaration points, the cause, and the fix. It has the 'User-facing change' section with what changed, before and after, affected frontmcp.dev pages, and updated skills catalog entries. It has the 'Tests' section, which lists the new tests and the commands run with their results. The template's HTML comments were replaced with real content, and the description is specific enough to review.
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Actionable comments posted: 1
Fix comments: Fix CodeRabbit comments on this PR
Prompt to fix all issues
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Inline comments:
Review comments at @libs/sdk/src/provider/provider.registry.ts:
- Line 471: Replace the `ProviderRegistry` class-identity check in the provider
registry injection path with a cross-copy-stable injection token, and ensure
registry injection resolves to the existing registry rather than the
zero-argument fallback. Add coverage for an ESM server using a CommonJS plugin
factory that injects only the registry.
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* Cherry-pick: fix(adapters,plugins,edge): an older saas bundle, pulled or pushed, doesn't roll the server back
Cherry-picked from #1119 (merged to release/1.11.x)
Original commit: d88f422
Co-Authored-By: frontegg-david <69419539+frontegg-david@users.noreply.github.com>
* Cherry-pick: fix(sdk,plugins): an @app's Skilled OpenAPI credential resolver reaches execute_action and this.callTool() of an operation
Cherry-picked from #1120 (merged to release/1.11.x)
Original commit: 00a3b00
Co-Authored-By: frontegg-david <69419539+frontegg-david@users.noreply.github.com>
* Cherry-pick: fix(adapters,plugins,edge): a push token replayed to another replica or Worker isolate is refused
Cherry-picked from #1122 (merged to release/1.11.x)
Original commit: 1341026
Co-Authored-By: frontegg-david <69419539+frontegg-david@users.noreply.github.com>
* Cherry-pick: fix(plugins): a skill a skills:filter hook hides can't be run by naming its actions
Cherry-picked from #1123 (merged to release/1.11.x)
Original commit: a081fbf
Co-Authored-By: frontegg-david <69419539+frontegg-david@users.noreply.github.com>
* Cherry-pick: fix(sdk): a plugin listed twice in one plugins list is refused at startup instead of keeping only its last entry
Cherry-picked from #1127 (merged to release/1.11.x)
Original commit: 3dbadd3
Co-Authored-By: frontegg-david <69419539+frontegg-david@users.noreply.github.com>
* Cherry-pick: fix(plugins,edge): a Cron run that doesn't apply its bundle fails, and /readyz says the bundle served is stale
Cherry-picked from #1128 (merged to release/1.11.x)
Original commit: 4938d21
Co-Authored-By: frontegg-david <69419539+frontegg-david@users.noreply.github.com>
* Cherry-pick: fix(sdk): connect() with an authToken connects an anonymous caller again on a server without auth
Cherry-picked from #1129 (merged to release/1.11.x)
Original commit: 3d238da
Co-Authored-By: frontegg-david <69419539+frontegg-david@users.noreply.github.com>
* Cherry-pick: fix(auth,adapters,plugins,edge): operators can tell why a pull or push token was refused, while callers still get the generic answer
Cherry-picked from #1130 (merged to release/1.11.x)
Original commit: 913f4f5
Co-Authored-By: frontegg-david <69419539+frontegg-david@users.noreply.github.com>
* Cherry-pick: fix(sdk,auth,plugins): this.authProviders works: the SDK wires the AuthProviders vault from a new authProvidersVault option
Cherry-picked from #1131 (merged to release/1.11.x)
Original commit: e14c30c
Co-Authored-By: frontegg-david <69419539+frontegg-david@users.noreply.github.com>
* Cherry-pick: fix(sdk,auth): /oauth/connect connects a verified caller who has no vault yet, and asks an anonymous one to sign in
Cherry-picked from #1132 (merged to release/1.11.x)
Original commit: f46a87a
Co-Authored-By: frontegg-david <69419539+frontegg-david@users.noreply.github.com>
* Cherry-pick: fix(sdk,plugins): the SDK skill surfaces say a plugin's skills haven't loaded yet, retryable, and carry bundleVersion
Cherry-picked from #1133 (merged to release/1.11.x)
Original commit: 0d1dc94
Co-Authored-By: frontegg-david <69419539+frontegg-david@users.noreply.github.com>
* Cherry-pick: fix(sdk,auth,cli,plugins): the credentials-required error keeps its connect link out of the message, and asks through URL elicitation where the client supports it
Cherry-picked from #1134 (merged to release/1.11.x)
Original commit: 6d8ea24
Co-Authored-By: frontegg-david <69419539+frontegg-david@users.noreply.github.com>
* Cherry-pick: fix(sdk): a health check registered after startup runs in /readyz, and registerHealthProbe returns a remover
Cherry-picked from #1135 (merged to release/1.11.x)
Original commit: 7f2f48f
Co-Authored-By: frontegg-david <69419539+frontegg-david@users.noreply.github.com>
* Cherry-pick: fix(sdk,plugins): a bundle swap sends one list_changed per list it changed, not one per entry
Cherry-picked from #1136 (merged to release/1.11.x)
Original commit: 0296291
Co-Authored-By: frontegg-david <69419539+frontegg-david@users.noreply.github.com>
* Cherry-pick: fix(adapters,plugins,edge): a restarted server serves its cached bundle in place of an older or refused pull, and doesn't write it back
Cherry-picked from #1137 (merged to release/1.11.x)
Original commit: 358d114
Co-Authored-By: frontegg-david <69419539+frontegg-david@users.noreply.github.com>
* Cherry-pick: fix(sdk,adapters,plugins,edge): a push token with a body_sha256 claim can't carry another bundle
Cherry-picked from #1138 (merged to release/1.11.x)
Original commit: b870325
Co-Authored-By: frontegg-david <69419539+frontegg-david@users.noreply.github.com>
* Cherry-pick: fix(plugins,edge): managed mode takes confirm, and the audit log says whether the user confirmed a call
Cherry-picked from #1139 (merged to release/1.11.x)
Original commit: 588289f
Co-Authored-By: frontegg-david <69419539+frontegg-david@users.noreply.github.com>
* Cherry-pick: fix(cli): the generated CLI says unknown command, prints an MCP error prefix once, and offers load_skill only the run lines it has
Cherry-picked from #1140 (merged to release/1.11.x)
Original commit: 4cfe9a2
Co-Authored-By: frontegg-david <69419539+frontegg-david@users.noreply.github.com>
* Cherry-pick: fix(plugins): load_skill's outputSchema describes a loaded skill once
Cherry-picked from #1141 (merged to release/1.11.x)
Original commit: 470010e
Co-Authored-By: frontegg-david <69419539+frontegg-david@users.noreply.github.com>
* Cherry-pick: fix(sdk,cli): skills/load's default answer sends formattedContent again, as 1.11.0 did; format: 'markdown' is the opt-in for the smaller one
Cherry-picked from #1142 (merged to release/1.11.x)
Original commit: a680fe7
Co-Authored-By: frontegg-david <69419539+frontegg-david@users.noreply.github.com>
---------
Co-authored-by: agentfront[bot] <agentfront[bot]@users.noreply.github.com>
Co-authored-by: frontegg-david <69419539+frontegg-david@users.noreply.github.com>
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What and why
Stacks on #1119.
A
SkilledOpenApiCredentialResolvercan be declared in three places:SkilledOpenApiPlugin.init({ providers }), the@App({ providers })that installs the plugin, and@FrontMcp({ providers }). The nearest one wins.run_workflowhonored all three.When the plugin was installed in an
@Appthat declared the resolver, two paths still got the built-in resolver, which readscredentials, or the server's resolver:execute_action, which runs an action through its operation tool;this.callTool('<bundleId>.<operationId>').The cause: the plugin built its operation tools on the scope's providers, which don't include the app's. The plugin's own tools, such as
run_workflow, are built on the plugin's providers, which resolve through the plugin, then the app, then the server.The fix:
ProviderRegistry. It gets the registry that builds it. For a GLOBAL provider, that's the registry that declares it, so a plugin's provider gets the plugin's own providers. This is two one-line checks inProviderRegistry: one for GLOBAL factories, one for CONTEXT factories built from views. Before this change, injectingProviderRegistrybuilt a new, empty registry.scope.providerstoProviderRegistry. The operation tools now resolve their providers exactly asrun_workflowdoes, at all three levels, including on asplitByAppserver.Scenarios covered: F3 (a custom resolver, such as a vault) and E6 (
execute_actionthrough the operation tool).User-facing change
@App,execute_actionandthis.callTool('<bundleId>.<operationId>')now use the resolver that app declares, asrun_workflowdoes.ProviderRegistryto get the providers it is built in.@App({ providers })resolver reachedrun_workflowonly. The operation tools got the server's resolver or the built-in one, which readscredentials. → All three paths use the nearest resolver:init({ providers }), then the app's, then the server's, then the built-in one.inject: () => [ProviderRegistry]gave a new, empty registry. → It gives the registry that builds the provider. For a plugin's GLOBAL provider, that's the plugin's own providers.inject).frontmcp-development/references/create-plugin.md: injectingProviderRegistry, and building a runtime tool on the plugin's providers.frontmcp-development/references/openapi-adapter.md: where the resolver can be declared, and that it answers all three paths.Tests
Added:
plugin-registration.integration.spec.ts, in a real server, checking theauthorizationheader thatrun_workflow,execute_actionand a server tool'sthis.callTool()each send:@Appthat declares the resolver: all three use it (this failed before the fix);splitByAppserver (this failed before the fix);init({ providers })over the app's;init({ providers })and@FrontMcp({ providers })on a server-level plugin, and the built-in resolver when none is declared, now on all three paths.plugin.spec.ts: the operation tools are built on the providers the bundle-sync factory gets.provider.registry.spec.ts: a GLOBAL factory that injectsProviderRegistrygets the registry that declares it, which resolves through its parent; a CONTEXT factory gets the registry that builds it.app-resolver.e2e.spec.ts, with a new entrypoint that installs the plugin and its resolver in an@App, and nothing on the server:run_workflowandexecute_actionboth send the token the resolver reads (this failed before the fix).Run, after merging #1119:
nx test plugin-skilled-openapi: 50 suites, 723 tests passed.nx test sdk: 691 suites, 9643 tests passed.nx test skills: 3 suites, 249 tests passed.nx test demo-e2e-skilled-openapi: 9 suites, 83 tests passed.create()+ one tool grows by 44 bytes, to 1,289,009;create()+ WebMcpPlugin + one tool grows by 44 bytes, to 1,296,199;nx run-many -t typecheckfor sdk, plugin-skilled-openapi, demo-e2e-skilled-openapi and demo-e2e-bundle-size passed.tsc --noEmiton the SDK's and the plugin'stsconfig.lib.json, prettier and eslint (0 errors) passed.Summary by CodeRabbit