* Promote fields parameter beyond Insiders
Keep fields_param as an independently controlled feature flag while removing it from the Insiders expansion.
Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
* Make fields parameter available by default
Remove the fields_param feature flag and legacy tool variants so selected read tools always advertise and honor fields.
Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
Copilot-Session: 5c43cc70-27b5-47b4-bbd1-99d20f42d61b
---------
Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
Copilot-Session: 5c43cc70-27b5-47b4-bbd1-99d20f42d61b
* chore(deps): upgrade go-sdk to v1.7.0-pre.1 (new MCP spec)
Bumps github.com/modelcontextprotocol/go-sdk v1.6.1 -> v1.7.0-pre.1, the
pre-release that implements the new stateless MCP spec (SEP-2575 server/discover,
SEP-2567 sessionless, MRTR per SEP-2322).
The only source-visible change is tool annotation serialization: the new SDK
drops `omitempty` on ToolAnnotations.ReadOnlyHint and IdempotentHint, so false
values are now emitted explicitly. Regenerated the 113 affected toolsnaps to
match. No behavioural changes; build, vet, test and lint all pass.
Refs: github/copilot-mcp-core#1709
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* chore: regenerate license files
Auto-generated by license-check workflow
* ci(mcp-diff): pin to cross-spec-aware mcp-server-diff (3c2d5ea)
Pins both the stdio and streamable-http MCP Server Diff jobs to the 3.0
branch of SamMorrowDrums/mcp-server-diff (commit 3c2d5ea), which normalizes
cross-spec-version churn: _meta protocol plumbing, CacheableResult cache
hints, the initialize envelope, and tool-annotation default hints. Without it
the go-sdk v1.6.1 -> v1.7.0-pre.1 bump would surface ~113 spurious
idempotentHint/readOnlyHint:false diffs from the SDK dropping omitempty.
Temporary commit pin; move to the v3.0.0 tag once it ships.
Refs: github/copilot-mcp-core#1709
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* ci(mcp-diff): bump to a2ba618 (stateless server/discover probe)
a2ba618 adds the SEP-2575 server/discover stateless probe path, so each
server is probed at its own newest supported spec (base v1.6.1 via
initialize/2025-11-25, this branch via server/discover/2026-07-28) rather
than negotiating both down to the legacy handshake. Produces an honest,
signal-only cross-spec diff. Still a temporary commit pin; moves to v3.0.0
once tagged.
Refs: github/copilot-mcp-core#1709
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* ci(mcp-diff): use full commit SHA for action pin
Actions rejects shortened SHAs ('not supported'); use the full
a2ba618c42293fb36e67be88e59c60d5608a302a so the action resolves.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* ci(mcp-diff): track 3.0 HEAD (8fc26d8, becomes v3.0.0)
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* feat(inventory): project owner/repo to Mcp-Param-* headers (SEP-2243)
Annotates owner/repo tool params with x-mcp-header so the SDK projects them
to Mcp-Param-owner/Mcp-Param-repo request headers. A remote proxy can route
and filter on owner/repo from headers instead of re-parsing the JSON-RPC body
(headers are SDK-validated against the body). No-op for tools without these
params; old-protocol traffic unaffected.
Refs: github/copilot-mcp-core#1709, #1828
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* fix(inventory): preserve instructions in ForMCPRequest incl. server/discover
ForMCPRequest dropped the generated instructions when narrowing the per-request
inventory, so HTTP server/discover (and initialize) returned empty instructions
even though the full inventory had them. Preserve instructions on the copy and
treat server/discover like initialize. Fixes discover<->initialize parity flagged
on go-sdk#1034 (root cause was here, not the SDK).
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* ci(mcp-diff): pin to mcp-server-diff v3.0.0
Release is out; move both jobs from the 3.0-branch SHA to v3.0.0
(3521651, full SHA since Actions rejects short SHAs).
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* test(github): enforce owner/repo header projection across all tools
Export HeaderParams + AnnotateHeaderParams and add a coverage test over the
full all-toolsets inventory asserting every owner/repo param projects to its
Mcp-Param-* header. Guards the remote proxy's per-request header read so a new
tool can never silently ship without it (would fall back to body re-parsing).
Adding a future routing param is one entry in inventory.HeaderParams.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* fix(inventory): clone schema before header annotation to avoid shared-map race
AnnotateHeaderParams mutated the *jsonschema.Schema (and per-property Extra
maps) shared with the original tool definition via the caller's shallow copy.
Under per-request registration (remote server), concurrent requests could race
on — and fatally panic from — the same Extra map. Now clone only what we touch
(schema value, Properties map, annotated property schemas + their Extra maps);
the original is never written. Adds a no-mutation test and a 64-goroutine
race regression (go test -race clean).
Addresses Copilot review on #2787.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
---------
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
The current `search_code` query description is hand-wavy and gives the
model little usable guidance on GitHub code search syntax, which (per
analysis in #2390 across thousands of agent sessions) leads to repeated
422 ERROR_TYPE_QUERY_PARSING_FATAL responses from agents that guess at
plausible-but-invalid syntax.
Re-applies the spirit of #2442 by @jluocsa, originally suggested by
@danmoseley in #2390, but corrected against the actual endpoint this
tool calls.
Critically, this tool uses go-github's `client.Search.Code`, which hits
the legacy REST `/search/code` endpoint — NOT the new code search
("Blackbird"). Verified against the live API:
symbol:WithContext repo:github/github-mcp-server -> 0
/Get|Set/ repo:github/github-mcp-server -> 0
path:**/*.go func repo:github/github-mcp-server -> 0
filename:*.md repo:github/github-mcp-server -> 0
(Foo OR Bar) -path:vendor language:go -> 422
So `symbol:`, `/regex/`, path globs, filename globs, and parenthesized
boolean groups — features the proposal in #2442 listed — silently
return zero or fail. Documenting them would teach the model syntax
that doesn't work on this endpoint.
The new description focuses on what's actually supported by legacy
code search and the real bugs observed in #2390:
- `path:dir` is a prefix, NOT a glob (displaces `path:**/*.ts` guesses).
- `filename:exact.ext` is exact, NOT a glob (displaces `filename:*.md`).
- `/regex/` and `\|` inside quotes don't work — call this out so the
model stops generating them.
- `symbol:` doesn't work on this endpoint — call this out.
- Parenthesized boolean groups 422 — call this out so the model
stops wrapping `OR` chains in parens.
- Adds `extension:`, `in:file`, `in:path`, `size:`, `filename:`, `user:`
qualifiers that the previous text omitted.
- Implicit AND, `OR`, `NOT`, and `"quoted phrase"` for exact match are
documented positively.
- 256-char query limit.
All four examples in the new description are verified against the live
GitHub API and return non-zero results.
Co-authored-by: jluocsa <103165870+jluocsa@users.noreply.github.com>
Co-authored-by: danmoseley <6385855+danmoseley@users.noreply.github.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Sort all JSON object keys alphabetically at every level in toolsnaps by
unmarshaling and remarshaling. This leverages Go's built-in behavior where
json.Marshal automatically sorts map keys alphabetically, ensuring
consistent field ordering and eliminating noop churn in diffs.
Co-authored-by: SamMorrowDrums <4811358+SamMorrowDrums@users.noreply.github.com>
Tommaso Moro