io.ddx.pg/archive · v2026.10.22 · data-and-databases
pg.ddx.io: the PostgreSQL community's memory is healthy: it completed an MCP handshake in 1102 ms and exposes 29 tools.
Every PostgreSQL mailing list since 1991, linked to the commits, code, commitfest and docs.
Endpoint: https://pg.ddx.io/mcp (streamable-http)
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| Users (last 30 days) | 0 |
| Handshake | Healthy |
| Auth needed | None |
| Tool count | 29 |
| Latency | 1102 ms |
| Last checked (UTC) | 2026-10-23T05:00:19.488Z |
| Checked (UTC) | Status | Latency | Error |
|---|---|---|---|
| 2026-10-23T05:00:19.488Z | Healthy | 1102 |
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. commit_id takes a SHA (>= 7 hex), branch, tag, major version (17, 9.6), <ref> |
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. Prefixes: s:subject f:from t:to d:2024-01..2025-01 b:body. Returns messages best first (limit default 50, max 200; offset pages; collapse_threads=true keeps one per thr |
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. ref: a Message-ID or message URL, a commit SHA, repo@sha or commit URL, a docs URL or page.html, a wiki URL or title, a commitfest URL, or CVE-YYYY-NNNNN. Returns the related mail threads, commits, docs pages, wiki pages, commitfest entries and people, each listing w |
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, the first release tag on each branch that contains it, files changed with line counts, and its diff rendered from t |
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 |