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feat(plugin-mcp): add MCP tool annotations#17027

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AlessioGr merged 1 commit into
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feat/annotations
Jun 17, 2026
Merged

feat(plugin-mcp): add MCP tool annotations#17027
AlessioGr merged 1 commit into
mainfrom
feat/annotations

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@AlessioGr

@AlessioGr AlessioGr commented Jun 17, 2026

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Add MCP tool annotations to built-in and custom tools so clients can understand titles and behavior hints like read-only, destructive, idempotent, and open-world. Built-in annotations can be overridden through config, and annotations.title is now also used as the internal display label for tools, which also bridges the gap between internal and external API for labels (custom tools were not able to define a label).

Closes #16744


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📦 esbuild Bundle Analysis for payload

This analysis was generated by esbuild-bundle-analyzer. 🤖

Meta File Out File Size (raw) Note
packages/next/meta_index.json esbuild/index.js 201.84 KB 🆕 Added
packages/payload/meta_index.json esbuild/index.js 1.39 MB 🆕 Added
packages/payload/meta_shared.json esbuild/exports/shared.js 192.54 KB 🆕 Added
packages/richtext-lexical/meta_client.json esbuild/exports/client_optimized/index.js 304.96 KB 🆕 Added
packages/ui/meta_client.json esbuild/exports/client_optimized/index.js 1.37 MB 🆕 Added
packages/ui/meta_shared.json esbuild/exports/shared_optimized/index.js 18.66 KB 🆕 Added
Largest paths These visualization shows top 20 largest paths in the bundle.

Meta file: packages/next/meta_index.json, Out file: esbuild/index.js

Path Size
../../node_modules ${{\color{Goldenrod}{ ████████████████████████▋ }}}$ 98.9%, 197.86 KB
dist/adapters/router.js ${{\color{Goldenrod}{ }}}$ 0.3%, 663 B
dist/adapters/server.js ${{\color{Goldenrod}{ }}}$ 0.3%, 533 B
dist/adapters/layout.js ${{\color{Goldenrod}{ }}}$ 0.3%, 526 B
dist/adapters/views.js ${{\color{Goldenrod}{ }}}$ 0.2%, 409 B
dist/esbuildEntry.js ${{\color{Goldenrod}{ }}}$ 0.0%, 0 B

Meta file: packages/payload/meta_index.json, Out file: esbuild/index.js

Path Size
../../node_modules ${{\color{Goldenrod}{ █████████████████▎ }}}$ 69.3%, 960.51 KB
dist/fields/hooks ${{\color{Goldenrod}{ ▊ }}}$ 3.2%, 43.88 KB
dist/collections/operations ${{\color{Goldenrod}{ ▋ }}}$ 2.9%, 40.22 KB
dist/auth/operations ${{\color{Goldenrod}{ ▎ }}}$ 1.1%, 15.63 KB
dist/utilities/configToJSONSchema.js ${{\color{Goldenrod}{ ▎ }}}$ 1.1%, 14.93 KB
dist/globals/operations ${{\color{Goldenrod}{ ▎ }}}$ 1.0%, 13.36 KB
dist/fields/config ${{\color{Goldenrod}{ ▎ }}}$ 1.0%, 13.22 KB
dist/queues/operations ${{\color{Goldenrod}{ ▏ }}}$ 0.9%, 12.63 KB
dist/fields/validations.js ${{\color{Goldenrod}{ ▏ }}}$ 0.8%, 10.57 KB
dist/bin/generateImportMap ${{\color{Goldenrod}{ ▏ }}}$ 0.7%, 9.56 KB
dist/collections/config ${{\color{Goldenrod}{ ▏ }}}$ 0.7%, 9.21 KB
dist/config/orderable ${{\color{Goldenrod}{ ▏ }}}$ 0.6%, 8.07 KB
dist/uploads/fetchAPI-multipart ${{\color{Goldenrod}{ ▏ }}}$ 0.6%, 7.80 KB
dist/index.js ${{\color{Goldenrod}{ ▏ }}}$ 0.6%, 7.77 KB
dist/hierarchy/utils ${{\color{Goldenrod}{ ▏ }}}$ 0.6%, 7.64 KB
dist/database/migrations ${{\color{Goldenrod}{ ▏ }}}$ 0.5%, 7.55 KB
dist/collections/endpoints ${{\color{Goldenrod}{ }}}$ 0.4%, 6.12 KB
dist/queues/config ${{\color{Goldenrod}{ }}}$ 0.4%, 5.59 KB
dist/auth/strategies ${{\color{Goldenrod}{ }}}$ 0.4%, 5.43 KB
dist/utilities/telemetry ${{\color{Goldenrod}{ }}}$ 0.4%, 5.31 KB
(other) ${{\color{Goldenrod}{ ███████▋ }}}$ 30.7%, 425.67 KB

Meta file: packages/payload/meta_shared.json, Out file: esbuild/exports/shared.js

Path Size
../../node_modules ${{\color{Goldenrod}{ ███████████████████▉ }}}$ 79.5%, 150.12 KB
dist/fields/validations.js ${{\color{Goldenrod}{ █▍ }}}$ 5.6%, 10.57 KB
dist/config/orderable ${{\color{Goldenrod}{ ▍ }}}$ 1.7%, 3.13 KB
dist/fields/baseFields ${{\color{Goldenrod}{ ▍ }}}$ 1.5%, 2.79 KB
dist/utilities/deepCopyObject.js ${{\color{Goldenrod}{ ▎ }}}$ 1.4%, 2.69 KB
dist/auth/cookies.js ${{\color{Goldenrod}{ ▏ }}}$ 0.8%, 1.55 KB
dist/utilities/flattenTopLevelFields.js ${{\color{Goldenrod}{ ▏ }}}$ 0.8%, 1.42 KB
dist/fields/config ${{\color{Goldenrod}{ ▏ }}}$ 0.7%, 1.29 KB
dist/utilities/getVersionsConfig.js ${{\color{Goldenrod}{ ▏ }}}$ 0.6%, 1.04 KB
dist/utilities/flattenAllFields.js ${{\color{Goldenrod}{ }}}$ 0.4%, 794 B
dist/utilities/unflatten.js ${{\color{Goldenrod}{ }}}$ 0.4%, 779 B
dist/utilities/sanitizeUserDataForEmail.js ${{\color{Goldenrod}{ }}}$ 0.4%, 713 B
dist/utilities/getFieldPermissions.js ${{\color{Goldenrod}{ }}}$ 0.3%, 651 B
dist/collections/config ${{\color{Goldenrod}{ }}}$ 0.3%, 570 B
dist/bin/generateImportMap ${{\color{Goldenrod}{ }}}$ 0.3%, 561 B
dist/auth/sessions.js ${{\color{Goldenrod}{ }}}$ 0.3%, 525 B
dist/fields/getFieldPaths.js ${{\color{Goldenrod}{ }}}$ 0.3%, 485 B
dist/utilities/appendDateTimezoneSelectFields.js ${{\color{Goldenrod}{ }}}$ 0.2%, 432 B
dist/utilities/getSafeRedirect.js ${{\color{Goldenrod}{ }}}$ 0.2%, 423 B
dist/utilities/deepMerge.js ${{\color{Goldenrod}{ }}}$ 0.2%, 413 B
(other) ${{\color{Goldenrod}{ █████▏ }}}$ 20.5%, 38.64 KB

Meta file: packages/richtext-lexical/meta_client.json, Out file: esbuild/exports/client_optimized/index.js

Path Size
dist/features/blocks ${{\color{Goldenrod}{ ███ }}}$ 12.3%, 37.13 KB
dist/lexical/ui ${{\color{Goldenrod}{ ██▊ }}}$ 11.3%, 34.16 KB
dist/lexical/plugins ${{\color{Goldenrod}{ ██▋ }}}$ 10.9%, 32.88 KB
dist/features/experimental_table ${{\color{Goldenrod}{ ██▎ }}}$ 9.0%, 27.16 KB
dist/packages/@lexical ${{\color{Goldenrod}{ █▌ }}}$ 6.3%, 18.99 KB
dist/features/link ${{\color{Goldenrod}{ █▌ }}}$ 6.2%, 18.83 KB
dist/features/toolbars ${{\color{Goldenrod}{ █▍ }}}$ 5.5%, 16.58 KB
dist/features/upload ${{\color{Goldenrod}{ █▏ }}}$ 4.7%, 14.09 KB
dist/features/textState ${{\color{Goldenrod}{ ▉ }}}$ 3.7%, 11.08 KB
dist/features/relationship ${{\color{Goldenrod}{ ▊ }}}$ 3.2%, 9.61 KB
dist/lexical/utils ${{\color{Goldenrod}{ ▋ }}}$ 2.9%, 8.79 KB
dist/features/converters ${{\color{Goldenrod}{ ▋ }}}$ 2.8%, 8.36 KB
dist/utilities/fieldsDrawer ${{\color{Goldenrod}{ ▋ }}}$ 2.7%, 8.12 KB
dist/features/debug ${{\color{Goldenrod}{ ▋ }}}$ 2.5%, 7.40 KB
dist/lexical/config ${{\color{Goldenrod}{ ▍ }}}$ 1.7%, 5.08 KB
dist/features/lists ${{\color{Goldenrod}{ ▍ }}}$ 1.7%, 5.00 KB
dist/features/format ${{\color{Goldenrod}{ ▎ }}}$ 1.1%, 3.46 KB
dist/lexical/LexicalEditor.js ${{\color{Goldenrod}{ ▎ }}}$ 1.1%, 3.23 KB
dist/features/horizontalRule ${{\color{Goldenrod}{ ▎ }}}$ 1.1%, 3.18 KB
dist/field/Field.js ${{\color{Goldenrod}{ ▏ }}}$ 0.9%, 2.83 KB
(other) ${{\color{Goldenrod}{ █████████████████████▉ }}}$ 87.7%, 264.60 KB

Meta file: packages/ui/meta_client.json, Out file: esbuild/exports/client_optimized/index.js

Path Size
../../node_modules ${{\color{Goldenrod}{ ██████████▋ }}}$ 42.7%, 580.42 KB
dist/elements/Hierarchy ${{\color{Goldenrod}{ ▊ }}}$ 3.2%, 43.02 KB
dist/elements/BulkUpload ${{\color{Goldenrod}{ ▌ }}}$ 2.1%, 28.33 KB
dist/views/Version ${{\color{Goldenrod}{ ▌ }}}$ 2.0%, 27.40 KB
dist/views/HierarchyList ${{\color{Goldenrod}{ ▍ }}}$ 1.5%, 20.43 KB
dist/elements/Table ${{\color{Goldenrod}{ ▎ }}}$ 1.4%, 19.37 KB
dist/views/Dashboard ${{\color{Goldenrod}{ ▎ }}}$ 1.3%, 17.73 KB
dist/views/Edit ${{\color{Goldenrod}{ ▎ }}}$ 1.3%, 17.45 KB
dist/elements/WhereBuilder ${{\color{Goldenrod}{ ▎ }}}$ 1.3%, 17.39 KB
dist/forms/Form ${{\color{Goldenrod}{ ▎ }}}$ 1.2%, 15.89 KB
dist/fields/Relationship ${{\color{Goldenrod}{ ▎ }}}$ 1.1%, 15.48 KB
dist/fields/Blocks ${{\color{Goldenrod}{ ▎ }}}$ 1.1%, 15.06 KB
dist/fields/Upload ${{\color{Goldenrod}{ ▎ }}}$ 1.1%, 14.40 KB
dist/elements/QueryPresets ${{\color{Goldenrod}{ ▏ }}}$ 0.8%, 10.22 KB
dist/views/List ${{\color{Goldenrod}{ ▏ }}}$ 0.6%, 8.78 KB
dist/elements/PublishButton ${{\color{Goldenrod}{ ▏ }}}$ 0.6%, 8.77 KB
dist/elements/ReactSelect ${{\color{Goldenrod}{ ▏ }}}$ 0.6%, 8.72 KB
dist/elements/HTMLDiff ${{\color{Goldenrod}{ ▏ }}}$ 0.6%, 8.38 KB
dist/elements/LivePreview ${{\color{Goldenrod}{ ▏ }}}$ 0.6%, 8.26 KB
dist/elements/UserMenu ${{\color{Goldenrod}{ ▏ }}}$ 0.6%, 7.98 KB
(other) ${{\color{Goldenrod}{ ██████████████▎ }}}$ 57.3%, 780.45 KB

Meta file: packages/ui/meta_shared.json, Out file: esbuild/exports/shared_optimized/index.js

Path Size
dist/graphics/Logo ${{\color{Goldenrod}{ ███████▋ }}}$ 30.9%, 5.57 KB
../../node_modules ${{\color{Goldenrod}{ ███▋ }}}$ 14.7%, 2.65 KB
dist/graphics/Icon ${{\color{Goldenrod}{ ██▏ }}}$ 8.5%, 1.52 KB
dist/utilities/formatDocTitle ${{\color{Goldenrod}{ █▊ }}}$ 7.3%, 1.32 KB
dist/providers/TableColumns ${{\color{Goldenrod}{ █▏ }}}$ 4.8%, 866 B
dist/utilities/getGlobalData.js ${{\color{Goldenrod}{ █ }}}$ 4.2%, 762 B
dist/utilities/api.js ${{\color{Goldenrod}{ █ }}}$ 4.2%, 756 B
dist/utilities/groupNavItems.js ${{\color{Goldenrod}{ █ }}}$ 4.1%, 745 B
dist/elements/Translation ${{\color{Goldenrod}{ ▋ }}}$ 2.7%, 493 B
dist/utilities/handleTakeOver.js ${{\color{Goldenrod}{ ▌ }}}$ 2.4%, 440 B
dist/utilities/traverseForLocalizedFields.js ${{\color{Goldenrod}{ ▌ }}}$ 2.3%, 419 B
dist/elements/withMergedProps ${{\color{Goldenrod}{ ▍ }}}$ 1.9%, 339 B
dist/utilities/getNavGroups.js ${{\color{Goldenrod}{ ▍ }}}$ 1.9%, 338 B
dist/utilities/getVisibleEntities.js ${{\color{Goldenrod}{ ▍ }}}$ 1.8%, 329 B
dist/elements/WithServerSideProps ${{\color{Goldenrod}{ ▎ }}}$ 1.3%, 232 B
dist/utilities/handleGoBack.js ${{\color{Goldenrod}{ ▎ }}}$ 1.0%, 180 B
dist/fields/mergeFieldStyles.js ${{\color{Goldenrod}{ ▏ }}}$ 0.9%, 157 B
dist/utilities/handleBackToDashboard.js ${{\color{Goldenrod}{ ▏ }}}$ 0.8%, 152 B
dist/forms/Form ${{\color{Goldenrod}{ ▏ }}}$ 0.8%, 148 B
dist/utilities/abortAndIgnore.js ${{\color{Goldenrod}{ ▏ }}}$ 0.8%, 146 B
(other) ${{\color{Goldenrod}{ █████████████████▎ }}}$ 69.1%, 12.47 KB
Details

Next to the size is how much the size has increased or decreased compared with the base branch of this PR.

  • ‼️: Size increased by 20% or more. Special attention should be given to this.
  • ⚠️: Size increased in acceptable range (lower than 20%).
  • ✅: No change or even downsized.
  • 🗑️: The out file is deleted: not found in base branch.
  • 🆕: The out file is newly found: will be added to base branch.

@AlessioGr AlessioGr merged commit 0cf0e32 into main Jun 17, 2026
340 of 343 checks passed
@AlessioGr AlessioGr deleted the feat/annotations branch June 17, 2026 15:52
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2 participants