fix(plugin-mcp): use inline block schemas in JSON output by kendelljoseph · Pull Request #15675 · payloadcms/payload

kendelljoseph · 2026-02-18T17:19:31Z

Blocks were previously emitted as $ref references in the JSON Schema. This caused MCP tools to reject block field values during schema validation.

Fixes #15399

… $ref

github-actions · 2026-02-18T17:28:40Z

📦 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	950.34 KB	✅ No change
packages/payload/meta_index.json	esbuild/index.js	1.32 MB	⚠️ +65 B (+0.0%)
packages/payload/meta_shared.json	esbuild/exports/shared.js	168.53 KB	✅ -16 B (-0.0%)
packages/richtext-lexical/meta_client.json	esbuild/exports/client_optimized/index.js	281.79 KB	✅ No change
packages/ui/meta_client.json	esbuild/exports/client_optimized/index.js	1.18 MB	✅ No change
packages/ui/meta_shared.json	esbuild/exports/shared_optimized/index.js	16.32 KB	✅ No change

Largest paths

These visualization shows top 20 largest paths in the bundle.

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

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

Path	Size
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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.

github-actions · 2026-02-27T20:20:14Z

🚀 This is included in version v3.78.0

jhb-dev · 2026-03-03T07:22:33Z

Hi @kendelljoseph, while this PR solves the issue with the MCP plugin, it unfortunately produces a bug with the generated types: #15820

…rty to use in plugin mcp (#15892) Fixes #15820 which is a regression from #15675. This PR adds a new property to use it for plugin mcp internal purposes instead of modifying the behaviour globally.

fix(plugin-mcp): inline block schemas in JSON output instead of using…

8778d5a

… $ref

kendelljoseph requested a review from DanRibbens February 18, 2026 17:19

github-actions Bot added the created-by: Payload team label Feb 18, 2026

kendelljoseph added 2 commits February 18, 2026 12:42

fix(payload): revert additionalProperties to false on block schemas

7882cbf

fix(plugin-mcp): fix blocks field test cleanup and ID extraction

5cdaba5

kendelljoseph marked this pull request as ready for review February 19, 2026 00:08

DanRibbens approved these changes Feb 19, 2026

View reviewed changes

kendelljoseph merged commit a66e844 into main Feb 19, 2026
886 of 900 checks passed

kendelljoseph deleted the fix/mcp-blocks-field branch February 19, 2026 15:51

jhb-dev mentioned this pull request Feb 20, 2026

MCP Plugin: JSON Schema for blocks and relationship fields is incomplete #14930

Closed

jhb-dev mentioned this pull request Mar 3, 2026

generate:types inlines all block types since 3.78, massively bloating payload-types.ts #15820

Closed

r1tsuu mentioned this pull request Mar 10, 2026

fix: generate:types inlines all blocks, add forceInlineBlocks property to use in plugin mcp #15892

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fix(plugin-mcp): use inline block schemas in JSON output#15675

fix(plugin-mcp): use inline block schemas in JSON output#15675
kendelljoseph merged 3 commits into
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fix/mcp-blocks-field

kendelljoseph commented Feb 18, 2026 •

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

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

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

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

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

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

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📦 esbuild Bundle Analysis for payload

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

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

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

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

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

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

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kendelljoseph commented Feb 18, 2026 •

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