MCP: stacked improvements (5 commits for upstream PRs)#15
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This was referenced Jun 25, 2026
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Return body_text as a paginated slice instead of the full message body. Adds offset, center_at, max_chars (default 2000, max 4000), body_length, body_returned, and has_more so agents can page through long messages or jump to a match via center_at (byte offset from search_in_message). Values above maxBodyChars clamp to 4000; zero or negative max_chars use the default. Guard against Engine.GetMessage returning (nil, nil) for not-found. Return UTF-8-adjusted offset, body_returned, and has_more so sequential paging (offset += body_returned) does not skip multibyte characters. Co-authored-by: endolith <endolith@gmail.com>
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New tool finds all occurrences of a term in one message body, returning char_offset, line, and a centered snippet per match. Adds extractContextChar helper (used by search results in a follow-up PR) with UTF-8-safe windows. Co-authored-by: endolith <endolith@gmail.com>
search_messages (no mode) searches metadata only via SearchFast — subject, snippet, sender, labels, dates. Full-body keyword search moves to the new search_message_bodies tool with context excerpts around matched terms. Vector/hybrid modes stay on search_messages; hybrid results hydrate via GetMessageSummariesByIDs (no per-hit GetMessage) matching upstream kenn-io#388. Co-authored-by: endolith <endolith@gmail.com>
Add ChunkScoringBackend.ScoreMessageChunks to score every embedded chunk within a message against the query vector. - search_messages mode=vector|hybrid: each hit includes matches[] (up to 5 chunks, best similarity first; optional min_score) - search_in_message mode=vector: paginated semantic chunk matches - search_message_bodies: context_snippets renamed to matches[] with char_offset and line for consistency across search tools Hybrid engine returns QueryVector in ResultMeta to avoid re-embedding when enriching search results. Co-authored-by: endolith <endolith@gmail.com>
Document supported search_messages query operators (subset of Gmail syntax), metadata-only default search vs search_message_bodies for body FTS, body query syntax (ANDed terms, quoted phrases, filter vs free-text), and matches_truncated on capped excerpt lists. Clarify aggregate group_by=time buckets by calendar year. Add schema contract tests and toolPropertyDescription helper for mcp-go map schemas. Update docs/usage/chat.md. Co-authored-by: endolith <endolith@gmail.com>
Rebase left duplicate bodyByteSlice/contextWindow helpers; keep a single bodyByteSliceRange-based implementation. Use local assert helpers in new tests for testify-helper-check. Co-authored-by: endolith <endolith@gmail.com>
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(See kenn-io#388 and kenn-io#421) |
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Summary
Five independent commits on
main, each suitable for a separate upstream PR. This PR is the full stack (commit 5 of 5); merge in order or review commit-by-commit.Commit stack (oldest → newest)
098a7fesplit/mcp1-get-message-pagingget_messagebody reading (+ max_chars clamp)d819d71split/mcp2-search-in-messagesearch_in_messagetoolcc0b70bsplit/mcp3-search-message-bodiessearch_message_bodies; metadata-onlysearch_messages; hybrid bulk hydrationb9f1ef6split/mcp4-vector-chunk-matchesmatches[]; unified match shape across search tools994be4asplit/mcp5-tool-schema-docsPagination (
search_messages/list_messageslimits) is already on upstreammain(kenn-io#388).Supersedes
Closes the scattered fork PRs #8–#12, #14 in favor of this stack.
Usage
search_messages(omitmode)search_message_bodies→matches[]search_messagesmode=vector|hybrid→matches[]with scoressearch_in_message(mode=keywordormode=vector)get_messagewithoffset/center_at