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fix(mcp): clarify missing remote server URL - #6725

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FlowiseAI:mainfrom
uuzzrm:codex/fix-custom-mcp-config-error
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fix(mcp): clarify missing remote server URL#6725
uuzzrm wants to merge 1 commit into
FlowiseAI:mainfrom
uuzzrm:codex/fix-custom-mcp-config-error

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@uuzzrm

@uuzzrm uuzzrm commented Aug 12, 2026

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Fixes #6716

The Custom MCP node can receive a stdio-style config without a URL, but the current error only says that a URL is required for SSE transport. That leaves the configuration mistake unclear.

This updates the error to describe the two supported paths: provide a URL for a remote MCP server, or set CUSTOM_MCP_PROTOCOL=stdio and provide command/args for a local server.

Tests:

  • MCP core Jest suite: 81 passed
  • ESLint on the changed files
  • git diff --check

The package-wide TypeScript check still reports three existing errors in ChainTool/core.ts, MCP/core.ts, and Chroma/core.ts; those paths are outside this change.

dblagbro added a commit to dblagbro/flow-wiser that referenced this pull request Aug 12, 2026
…ill merging (#18)

The 2026-08-05 snapshot was taken because "upstream repository moves to public
archive on 2026-08-10, which locks issues and pull requests". That did not
happen. Verified 2026-08-12: archived=false, disabled=false, comments still
working, and three pull requests merged on 2026-08-07 -- after the documented
2026-07-29 code freeze and after the snapshot was taken.

Upstream is frozen, not closed. Contributions can still be commented on and, on
this evidence, still merged.

This contradicts docs/PROJECT-LOG.md, docs/product.md and docs/STATUS.md, which
all assert the archive happened. It also makes a public comment on upstream
FlowiseAI#6706 wrong. Both are flagged in DELTA-2026-08-12.md rather than corrected here,
because the licensing narrative is REVIEW REQUIRED and belongs to a human.

Synced:
  * 3 new PRs captured as git am-able patches -- FlowiseAI#6714, FlowiseAI#6723, FlowiseAI#6725
  * 3 upstream-MERGED fixes this fork does not have, captured to
    merged-after-snapshot/ -- FlowiseAI#6680, FlowiseAI#6708, FlowiseAI#6709, all maintainer-authored
  * prs/index.json refreshed 347 -> 346, issues 698 -> 701
  * both indexes normalised to a single JSON array; the originals were 11
    concatenated per-page arrays that parse only with jq -s. Data was complete
    in both, only the shape changed.

Licence check applied to all six new patches: no diff hunks against
packages/server/src/enterprise/ or IdentityManager.ts. All clean, no stripping
required, and no hunk content was read to determine it -- decisions made on the
diff --git path headers alone, per docs/CLEANROOM-PROTOCOL.md.

DELTA-2026-08-12.md also records where Flow-Wiser has already solved a still-open
upstream PR, with the fork's fix being the more complete one in every confirmed
case: FlowiseAI#6670 and FlowiseAI#6642 (the unpinned Docker version -- this fork's founding
defect, still open upstream from two independent reporters), FlowiseAI#6706
(connect-sqlite3), and FlowiseAI#4805 (Node 22, open since 2025-07-06 for the change
ADR-0004 completed this week across ten locations rather than three).

Contributing any of it back is an outward action and is left for authorization.

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
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Successfully merging this pull request may close these issues.

Custom MCP in Agent node: 'Invalid MCP Server Config: Error: URL is required for SSE transport' when mcpServerConfig lacks a url key

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