feat: upload files through the MCP server for action File fields - #1815

Merged

Scra3 merged 39 commits into

mainfrom

feature/prd-913-upload-files-through-the-mcp-server

Aug 17, 2026

Commits on Aug 12, 2026

feat(datasource-toolkit): expose a shared data uri codec

alban bertolini
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claude
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dc93471
feat(agent-client): encode file values for action File fields

alban bertolini
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claude
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5ace7c8
refactor: reuse the shared data uri codec

alban bertolini
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claude
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ebc69ac
feat(mcp-server): enable action file fields via an upload side-channel

committed
d0e8682
fix: address the review of the file upload side-channel

alban bertolini
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claude
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4c585f3
fix: address the automated review findings

alban bertolini
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claude
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8b6a0c6
refactor(mcp-server): expose the upload destination as a tool

alban bertolini
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claude
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2c57469
test(mcp-server): cover the file upload configuration and destination

alban bertolini
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claude
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d1b2bbc
fix: make a bad file value diagnosable by the caller

alban bertolini
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claude
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97660d5
docs(_example): demonstrate action file uploads end to end

alban bertolini
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claude
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d7ca657
fix(_example): contain the local upload storage to its root

alban bertolini
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claude
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f34cfca
fix(mcp-server): restore the scope check the route enforced, and name every object

alban bertolini
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claude
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e12cdc5
fix(_example): cap the body the local upload storage accepts

alban bertolini
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claude
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8c68ab4
fix(datasource-toolkit): reject a malformed data uri readably

alban bertolini
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claude
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bed0bbc
fix(mcp-server): bound a storage read and the queue behind it

alban bertolini
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claude
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49d688a
feat(mcp-server): let the standalone server enable file uploads

alban bertolini
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claude
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d46434f
fix: stop rejecting work the limits were never meant to reject

alban bertolini
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claude
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914548c
feat(mcp-server): hold uploads in memory when no storage is configured

alban bertolini
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claude
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4242b06
fix(mcp-server): harden the in-memory upload store against concurrency and aborts
alban bertolini
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1810811
fix(mcp-server): accept an in-memory upload that replaces one of the same key
alban bertolini
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5094c9b
test(mcp-server): upload to the url the in-memory store actually hands out
alban bertolini
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9cd8e81
fix(mcp-server): name the refused upload first when an object is missing
alban bertolini
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2ea1881
refactor(mcp-server): cut what the in-memory store did not need
alban bertolini
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51f1c67

Commits on Aug 13, 2026

docs(mcp-server): name the two conditions a hosted client needs to upload
alban bertolini
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4cd35f3
fix(mcp-server): stop claiming a checksum header the default backend never sends
alban bertolini
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b8c461f
refactor(mcp-server)!: rename requestFileUpload to requestActionFileUpload
alban bertolini
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31fb616
fix(mcp-server): make the in-memory upload url genuinely single-use
alban bertolini
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f6ce069
feat(mcp-server)!: enable action file uploads by default
alban bertolini
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d724e28
docs(mcp-server): stop naming a settings path the user may not have
alban bertolini
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24e0547
docs(mcp-server): drop cloud agents from the single-instance warning
alban bertolini
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bb62c80
fix(agent-client)!: keep getType() on the wire form, collapse it apart
alban bertolini
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63062ec
fix(mcp-server): survive a retry, and stop trusting a broken storage module
alban bertolini
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a961a95
docs(mcp-server): say why the store refuses early, and what getSize may reject
alban bertolini
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49bd1d1
test(agent-testing): restore the list type this package always asserted
alban bertolini
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f720ae5

Commits on Aug 14, 2026

docs(mcp-server): the Claude Desktop upload is verified, not expected
alban bertolini
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cee8109
fix(mcp-server): keep a required file field satisfiable, and add a way off
alban bertolini
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2190fd5
docs(mcp-server): make the sha256 pin the stated default, not an aside
alban bertolini
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b6f30be
fix(mcp-server): review the delta the reviews had not covered
alban bertolini
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cb63a04

Commits on Aug 17, 2026

docs(mcp-server): cowork verified too, and the filename is a label
alban bertolini
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d6913ab