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chore: bump @modelcontextprotocol/sdk from 1.29.0 to 1.30.0 - #29

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chore: bump @modelcontextprotocol/sdk from 1.29.0 to 1.30.0#29
dangrondahl merged 1 commit into
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dependabot/npm_and_yarn/modelcontextprotocol/sdk-1.30.0

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@dependabot dependabot Bot commented on behalf of github Aug 11, 2026

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Bumps @modelcontextprotocol/sdk from 1.29.0 to 1.30.0.

Release notes

Sourced from @​modelcontextprotocol/sdk's releases.

1.30.0

What's Changed

New Contributors

Full Changelog: modelcontextprotocol/typescript-sdk@v1.29.0...1.30.0

Commits
  • 2d889f2 chore: bump version to 1.30.0 (#2563)
  • e3f3daa Fix SSE keep-alive timer lifecycle in Streamable HTTP server transport (v1.x)...
  • bb5a718 fix(deps): widen @​hono/node-server past GHSA-frvp-7c67-39w9 (#2549)
  • 1dad263 fix: send SSE keep-alive comment frames from Streamable HTTP server transport...
  • 69749aa Validate Content-Type by parsed media type instead of substring match (v1.x) ...
  • 369513d fix: support Zod 3.25 method literals (#2368)
  • e7ee57c v1 stdio buffer limit (#2239)
  • c36e1ef Add end-to-end test suite (#2167)
  • bf1e022 chore(ci): switch publish to OIDC trusted publishing (#1839)
  • 9edbab7 fix(server): prioritize zod issues and format them (#1503)
  • See full diff in compare view
Maintainer changes

This version was pushed to npm by GitHub Actions, a new releaser for @​modelcontextprotocol/sdk since your current version.


@dependabot dependabot Bot added dependencies Pull requests that update a dependency file javascript Pull requests that update javascript code labels Aug 11, 2026
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dependabot Bot force-pushed the dependabot/npm_and_yarn/modelcontextprotocol/sdk-1.30.0 branch from aff505c to a30ae39 Compare August 11, 2026 14:45
@claude

claude Bot commented Aug 11, 2026

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Claude finished @dependabot[bot]'s task in 2m 53s —— View job


Dependency review: @modelcontextprotocol/sdk 1.29.0 → 1.30.0

  • Read the diff and confirm scope / semver
  • Check SDK release notes for behaviour changes affecting this repo
  • Verify how the SDK is used (src/index.ts tool registration + annotations)
  • Re-check the @hono/node-server advisory point from the previous review
  • Install, build, and run tests — not runnable in this session (see caveat)

Verdict: safe to merge. Minor bump, lockfile-only, no API surface this repo touches changed. Two things worth knowing about, neither blocking.


1. Scope and semver ✅

Lockfile-only, 4 lines: version, resolved, integrity, and one transitive range. package.json still declares ^1.29.0, which 1.30.0 satisfies — no manifest change needed, no major crossed. engines.node on the SDK is still >=18, comfortably under this repo's >=22 floor.

The only substantive change to the dependency tree is the SDK's own range for @hono/node-server, widened to ^1.19.9 || ^2.0.5.

2. Release-note triage against this codebase

The SDK only enters this repo at two import sites (src/index.ts:2-3): McpServer and StdioServerTransport. Sorting the changelog against that:

Change Relevant here?
Validate Content-Type by parsed media type (#2444) No — Streamable HTTP server transport only
SSE keep-alive frames + timer lifecycle (#2538, #2547) No — Streamable HTTP only
@hono/node-server widening (#2549) Not at runtime — see §3
v1 stdio buffer limit (#2239) Yes — this is the transport this repo uses
fix(server): prioritize zod issues and format them (#1503) Yes, cosmetically — changes tool-input validation error text

More than half the release is Streamable-HTTP work that this server never loads, which is why the risk here is low.

The stdio buffer limit is the one change that lands on a code path this repo actually runs. It caps the inbound read buffer on StdioServerTransport (src/index.ts:103). Inbound traffic here is small (tool calls carrying a query string or a params object), and a read-buffer cap should not constrain the large JSON responses this server writes outbound — execute_read_action results can be sizeable even after pickFields. I could not read the SDK source to confirm the cap's default value or that it is inbound-only, so I'd treat that as an assumption rather than a verified fact. Cheap to confirm once merged: run a real execute_read_action against a broad endpoint with no fields filter and check the response arrives intact.

Validation error formatting (#1503) changes the message shape when an LLM passes a bad actionId/params/fields to a tool. Nothing asserts that text, so this is purely a change in what the model reads back. No action.

3. The @hono/node-server advisory — previous review's point still stands

The widening in #2549 was specifically to escape GHSA-frvp-7c67-39w9, but the lockfile still resolves @hono/node-server to 1.19.13 (package-lock.json:470). Dependabot updated the SDK entry without re-resolving an already-locked transitive dep that still satisfies the new range, so the ^2.0.5 branch is not taken — the tree is byte-identical to before on that package.

Two honest caveats on my end: npm/gh api and the web tools were not permitted in this run, so I could not run npm audit or read the advisory to confirm whether 1.19.13 is in the affected range. If the advisory has a 1.x patch at or below 1.19.13, this is a non-issue and the widening is just the SDK opening the door to hono v2.

What I can say with confidence: this is not reachable at runtime here — the server only ever constructs StdioServerTransport, so hono and the Streamable HTTP path are never imported. But it is a published runtime dependency of @kosli/mcp-server, so it will surface in consumers' npm audit regardless of reachability. If audit does flag it:

"overrides": { "@hono/node-server": "^2.0.5" }

Fix this →

4. Pre-existing: zod is a phantom dependency

Not introduced by this PR, but this bump is exactly what governs it, so it's worth surfacing here. src/index.ts:4 imports zod directly, and zod is not in package.json dependencies — it resolves only because the SDK depends on it (^3.25 || ^4.0, currently hoisted to 4.3.6).

That range spans a major, and this release's fix: support Zod 3.25 method literals (#2368) confirms the SDK is actively maintaining both majors. So which zod lands in a consumer's tree is decided by the SDK and by whatever else is installed alongside it — nothing in this repo's manifest pins it. A consumer with zod 3 elsewhere could hoist v3 under npx @kosli/mcp-server, and any v4-only surface in the tool schemas would break at runtime, not at build time. Declaring it explicitly costs one line and removes the whole class of problem:

"dependencies": {
  "@modelcontextprotocol/sdk": "^1.29.0",
  "zod": "^4.0.0"
}

Fix this →

Worth its own PR against main rather than piggybacking on a Dependabot branch.

5. Verification status

CI passed on the recreated branch (run 31702525330) — build, tests, and the .mcpb pack smoke test, on both Node 22 and 24. That covers the tsc check of registerTool against the new type definitions, which is the most likely place a breaking SDK change would show up.

I could not reproduce it locally: node_modules is absent on this checkout and npm ci was not an approved command in this session, so the build, test suite, and npm audit are CI's word rather than mine here.

One gap that colours how much green CI proves: nothing under test/ imports the SDK (the suite covers the catalog, client, search, and scripts), and CI never launches the server. So the runtime handshake — registerTool actually registering, annotations reaching the client, stdio framing — is unexercised in both. A type-clean SDK regression would ship undetected. A small startup smoke test would close that, and would have made this review conclusive rather than mostly-static:

Add a startup smoke test →


Summary of what I did: reviewed the diff, checked semver and the Node floor, triaged all ten changelog entries against the two SDK import sites, re-examined the @hono/node-server finding from the earlier review, and read CI's result. Not done: local build/test/npm audit (no node_modules, npm not permitted here) and direct confirmation of the advisory's affected range (web tools not permitted). No files changed.
· branch dependabot/npm_and_yarn/modelcontextprotocol/sdk-1.30.0

Comment thread package-lock.json
"license": "MIT",
"dependencies": {
"@hono/node-server": "^1.19.9",
"@hono/node-server": "^1.19.9 || ^2.0.5",

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The SDK widened this range specifically to get past GHSA-frvp-7c67-39w9, but the lockfile still resolves @hono/node-server to 1.19.13 (line 470) — the widened ^2.0.5 branch is not taken, so if the advisory covers 1.x this bump does not actually pick up the fix.

Not reachable at runtime here (this server only uses StdioServerTransport, so the hono/Streamable-HTTP path is never loaded), but it will still show up in npm audit and in the published dependency tree. Worth running npm audit on this branch and, if 1.19.13 is flagged, adding an override:

"overrides": { "@hono/node-server": "^2.0.5" }

@dependabot
dependabot Bot force-pushed the dependabot/npm_and_yarn/modelcontextprotocol/sdk-1.30.0 branch from a30ae39 to 22f897d Compare August 13, 2026 12:14
@dangrondahl

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@dependabot rebase

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dependabot Bot commented on behalf of github Aug 13, 2026

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Looks like this PR is already up-to-date with main! If you'd still like to recreate it from scratch, overwriting any edits, you can request @dependabot recreate.

@dangrondahl

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@dependabot recreate

Bumps [@modelcontextprotocol/sdk](https://github.com/modelcontextprotocol/typescript-sdk) from 1.29.0 to 1.30.0.
- [Release notes](https://github.com/modelcontextprotocol/typescript-sdk/releases)
- [Commits](modelcontextprotocol/typescript-sdk@v1.29.0...1.30.0)

---
updated-dependencies:
- dependency-name: "@modelcontextprotocol/sdk"
  dependency-version: 1.30.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
@dependabot
dependabot Bot force-pushed the dependabot/npm_and_yarn/modelcontextprotocol/sdk-1.30.0 branch from 22f897d to d6620d3 Compare August 13, 2026 12:57
@dangrondahl
dangrondahl enabled auto-merge (squash) August 13, 2026 13:02
@dangrondahl
dangrondahl merged commit 0388f5c into main Aug 13, 2026
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@dangrondahl
dangrondahl deleted the dependabot/npm_and_yarn/modelcontextprotocol/sdk-1.30.0 branch August 13, 2026 13:02
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