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pg.ddx.io: the PostgreSQL community's memory

io.ddx.pg/archive · v2026.10.22

Measured by MCP Station

Description written by the publisher, not verified

Every PostgreSQL mailing list since 1991, linked to the commits, code, commitfest and docs.

Connect

claude mcp add --transport http archive https://pg.ddx.io/mcp

{
  "mcpServers": {
    "archive": {
      "url": "https://pg.ddx.io/mcp"
    }
  }
}

claude mcp add --transport http archive https://pg.ddx.io/mcp/sse

{
  "mcpServers": {
    "archive": {
      "url": "https://pg.ddx.io/mcp/sse"
    }
  }
}

Tools as reported by the server

• retrieve_context
  START HERE for a question about PostgreSQL. Searches every mailing list (inbox narrows it) with hybrid keyword + semantic ranking and returns cited passages that fit token_budget (default 4000, max 32000): one passage per thread, each the author's own words (quotes, signature and patch removed, cut
• commit_buildfarm_status
  Buildfarm results for one PostgreSQL commit: every animal that built it, with branch, status (passed/failed/flapping), the failing stage and the log url, plus a {passed, failed, flapping, unknown} rollup. commit_sha is a SHA (>= 7 hex) or a branch, tag or major version (17, 9.6) for the commit it po
• commit_history
  Everything linked to one commit: subject, author and date with its sha, the mail thread its Discussion: link names (participants resolved to people and organizations), the commitfest entry if tracked, and Discord mentions. For postgres also first_releases (per branch the change landed on: branch, sh
• find_failing_patches
  Commitfest entries whose latest cfbot build fails on at least one platform: cf_id, title, entry_status and commitfest_number. entry_status filters (default the active reviewable statuses, e.g. needs-review, ready-for-committer); platform narrows to one CI platform; limit caps the list. Cite https://
• get_attachment
  The content of one attachment of a mail message (a patch, a log, a test case), chosen by 1-based index or a filename substring, as listed in get_message/get_thread attachments. Text attachments come back as decoded text (a .patch is ready to read or `git apply`), binary ones as base64 with encoding=
• get_callers
  Reverse call graph: the symbols that call or reference qualified_name (from search_symbols), each with its file and lines, like `git grep -w <name>` restricted to call sites. HEAD only; macro expansion and function pointers are not followed. limit caps the list. Read a caller with git_show_file at i
• get_contributor
  A contributor's profile by email (exact) or name (substring): canonical name, page hash, totals and per-release counts by role (authored, reviewed, committed, reported, ...), the 5 latest credited commits with sha, and buildfarm animals they own. People who hid their page are excluded from name look
• get_doc_page
  One PostgreSQL documentation page as text: path (e.g. "brin.html" or "sql-createtable.html") and optional version ("17", "current"; default the latest). Returns its url, path and stored text (body) with fetched_at. Use search_docs to find the path. Cite the returned url.
• get_entry
  One commitfest entry by cf_id (the number in commitfest.postgresql.org/patch/<cf_id>/): title, status, commitfest, authors, reviewers, committer, its mail threads and branches. Read the thread with get_thread; cfbot state with find_failing_patches. Cite https://commitfest.postgresql.org/patch/<cf_id
• get_message
  One mail message by Message-ID: headers, in_reply_to/references, decoded body text (by default the author's own words: quotes, signature and inline patch removed; full_text=true for everything, quotes included), attachments [{index, filename, content_type, size}] and has_patch. Never raw MIME: get_a
• get_thread
  A mail thread, found by any Message-ID in it, oldest first. Each message: from, to, cc, date, message_id, decoded body text (by default the author's own words: quoted replies, signature and inline patch removed; full_text=true for the whole decoded text; never raw MIME), attachments [{index, filenam
• get_wiki_page
  One wiki.postgresql.org page by title: its latest revision content with author and date. Titles are as on the wiki ("Don't Do This", "Todo"). Use search_wiki to find a title, get_wiki_history for older revisions. Cite https://wiki.postgresql.org/wiki/<title>.
• git_log
  Commit history like `git log`, newest first, filtered by path (commits touching a file), author (substring), since/until (YYYY-MM-DD or RFC 3339) and branch (any branch, tag or major version such as 17 or 9.6; default the indexed default branch). Each commit: sha (40-hex, cite it), commit_id, messag
• git_search
  Search postgres commit messages (or file paths with search_in=paths) by keywords, newest first (all words must appear, case-insensitive; like `git log -i --grep` with every word). Each commit: sha (40-hex, cite it), commit_id, message, author, date, people credited, and mail_refs: up to 5 messages t
• hybrid_search
  Mailing-list search, keyword (BM25 over the authors' own words) and semantic (embeddings) blended per thread, over every list unless inbox names one or more. Returns up to limit threads (default 20, max 50), best first, each its best message: inbox, message_id, subject, from, date, thread_id, fused_
• list_sources
  Every source behind this server with its kind (inbox, repository, docs, wiki, discord), item count, last update and freshness (fresh/stale): the 56 mailing lists, the git repositories, the documentation releases, the wiki and Discord. Use it to learn the inbox and repository names other tools accept
• search_commitfest
  Full-text search of commitfest entries (title first, then author/reviewer/committer names), in the current commitfest by default, or commitfests="all" (back to 2014) or a comma list of numbers. Websearch syntax: "phrase", -term, or. Each result: cf_id, title, status, commitfest(s), people, last upda
• search
  Keyword search of mailing-list messages (BM25 over subject, sender and the authors' own words), every list unless inbox narrows it. Operators in query: s:/intitle: subject, f:/from: sender, b:/intext: body, after:/before:/d:2024-01..2025-01 dates, site:<list>, filetype:patch, link:<url glob>, /regex
• search_docs
  Full-text search of the PostgreSQL documentation (websearch syntax: "phrase", -term, or), title matches first. Searches the current release unless version (one, e.g. "17") or versions (several) is given; a page matching in several selected versions is one result listing each version and its URL. Ret
• search_symbols
  Find C functions, macros, types and variables by name in the indexed source (HEAD): BM25 on names, then fuzzy and body matches. Filter by kind (function, struct, macro, ...), language, repository. Each result: qualified_name, name, kind, language, file, start_line and end_line. Like `ctags`/`git gre
• search_wiki
  Full-text search (websearch syntax) of wiki.postgresql.org. By default searches each page's current text; history=true searches every revision and returns, per page, the latest matching revision (rev_id, revision_url, author, comment, timestamp, is_current) and how many matched; since/until bound th
• cross_reference
  What relates to one stored item, and what happened to it. ref: a Message-ID or message URL, a commit SHA or URL, a docs URL or page.html, a wiki URL or title, a commitfest URL, CVE-YYYY-NNNNN, or feature:<words> (matched to commitfest titles; ref.entries_used says which). Returns related threads, co
• whats_new
  Catch up: everything a person or group did, and where they were named, in a window, newest first per kind (mail grouped by thread). who: a name (fuzzy; close matches return ambiguous [{name, hash}]), email, hash:<8 hex>, team:<slug>, org:<name>, new:<window>, a phrase ('the core team'), or a list. s
• code_search
  Search the postgres source at any commit, branch, tag or date (or across history), from the code-history index: every line of every commit, byte-exact. A literal by default; match=regex for a PostgreSQL regex (^ and $ are per line; \b \< \> as in grep), match=identifier for any of snake_case/CamelCa
• read_file
  Read a file of the postgres source at any commit, branch, tag or date from the code-history index: numbered lines, at most 2000 per call (page with start_line/end_line), byte-exact to git. Says total_lines and complete; binary files return their metadata only.
• list_files
  List the files of the postgres source under a directory at any commit, branch, tag or date (code-history index), with line counts; depth folds deeper paths into directories with file counts; glob filters paths.
• blame
  Per-line blame of a postgres file at any commit (code-history index): the commit that wrote each line, as `git blame` with git's default diff. ignore_revs (default true) passes through the pgindent/reformat commits of .git-blame-ignore-revs when they replaced lines one-for-one; reverse adds the comm
• get_commit
  One postgres commit from the code-history index: message, parsed trailers (names only), Discussion threads (links to the archived thread on /m/), back-patch siblings on other branches, first_releases (per branch the change landed on: sha, release such as 14.23, first_version incl. betas, shipped=fal
• search_commits
  Search postgres commits (code-history index), newest first, like git log: range (a rev, or A..B; default the newest release branch), message (regex, case-insensitive), author (regex over author, committer and Author/Co-authored-by/Reviewed-by trailers), paths, since/until (YYYY-MM-DD), changed_lines

Website · JSON · Text for agents · Registry updated 2026-10-23