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

Reliability

Status and outage history · Atom feed · Watch with other listings

How to connect

Add it to any MCP client that supports remote servers.

{
  "mcpServers": {
    "pg-ddx-io-the-postgresql-community-s-memory": {
      "type": "http",
      "url": "https://pg.ddx.io/mcp"
    }
  }
}

125 tools

• 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…

• animal_history

  Run timeline for one animal. Filterable by branch and start cutoff; ordered newest first.

• animal_owner_contributions

  Animals run by one owner: list, branches each tracks, last status, first_seen_at and elapsed days since first observation.

• blame_symbol

  Show the commit history that modified a symbol's file, filtered to the symbol's line range.

• browse_by_date

  Browse threads within a specific date range. Useful for exploring what was discussed during a particular time period.

• build_status_freshness

  Most recent :entry/last-build-at observation across all entries. Use to detect a stalled cfbot scraper.

• buildfarm_overview

  High-level buildfarm health: animal count, recent run counts, currently-failing animals, top owners, OS / branch breakdown, and freshness.

• check_upstream_status

  Check whether a pull request has been merged upstream. Returns the latest patch series head commit and any merge information.

• code_index_status

  Get code indexing statistics: files indexed, symbol counts by kind and language, edge count, community count.

• codebase_map

  Get a directory-level overview of the codebase showing file counts and symbol counts per directory.

• 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)…

• 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…

• commitfest_stats

  Overview of all indexed commitfests: count by status, top contributors (entries authored), distinct people / commitfests / entries totals.

• contribution_summary

  Summary of contribution counts per release: unique people, distinct commits, role breakdown (count(DISTINCT commit_sha) per role, canonical authoritative repos only), and revert-commit count. Powers the /community hero strip.

• detect_changes

  Detect which symbols changed between two commits by comparing file content hashes.

• discussion_links

  Discussion / Closes / Fixes / Backpatch-through trailers attached to one commit. Returns the raw trailer text and any URL extracted. For the messages those links resolve to, plus the committers announcement and messages citing the SHA, use git_search (mail_refs on each result).

• embedding_status

  Get embedding coverage statistics: how many messages have embeddings, which model was used, and when embeddings were last generated.

• entry_branches

  Repository branches tracked for a commitfest entry. Joins commitfest.entry_repos with ag_repositories so callers see repo name + branch_name + is_authoritative.

• entry_history

  Status changes for a commitfest entry across commitfests. The relational table doesn't carry an audit log, so we approximate the patch's lifeline by joining on shared :entry/thread-message-id (precise) and falling back to title-prefix substring (weak).

• find_breaks

  Animals that failed on a branch within the time window bounded by two commit SHAs. The window is defined by the earliest started_at observed for either SHA on that branch — not by git topological order, since the buildfarm tables don't carry commit ordering.

• find_contributions

  Find raw contribution rows for one person: git commit SHAs / buildfarm animals tagged with a role + release. Useful for drill-down on a contributor's recent work.

• find_dead_code

  Find functions/methods with zero incoming call graph edges (potentially unused code).

• find_entries_for_author

  Find commitfest entries where the given person is an author. Looks up by email (exact) or by name (substring, case-sensitive).

• find_entries_for_thread

  Find commitfest entries linked to a pgsql-hackers thread by Message-ID. (Returns empty until the mailing-list cross-reference scrape lands; the index attribute :entry/thread-message-id is in the schema.)

• find_entries_with_failures_on

  Cross-domain feed: recent failed buildfarm runs for a named animal, plus commitfest entries with cfbot :failing rollups whose tracked branches overlap the animal's. Note: buildfarm runs commit SHAs and cfbot runs cf/<id> branches, so this verb correlates by branch overlap and…

• 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…

• find_failing_runs

  Most recent failing buildfarm runs across the entire fleet. Filterable by branch and start cutoff. Use to answer 'what is broken right now?'

• find_passing_long_pending

  Green patches stuck in review: entries whose builds pass on every platform yet whose :entry/last-updated is older than N days. Useful for the 'why isn't this committed yet?' question.

• find_patches_by_platform_status

  Patches that pass on some platforms but not others. Example: passing on linux but failing on macos -> portability bug.

• find_pattern

  Search for a regex pattern in code symbol bodies. Uses trigram indexes for acceleration.

• find_rebase_needed_patches

  Entries cfbot reports as no longer applying to master tip (:entry/applies-cleanly is false). These need an author rebase.

• find_related_discussions

  Find mailing list messages related to a commit, topic, or PR. A postgres commit SHA (7-40 hex) returns the mail that refers to that commit (match_mode commit): its Discussion: threads first, then the committers announcement, then messages citing the hash, each with…

• find_similar_messages

  Find messages similar to a given message using its embedding vector. Useful for finding related discussions or duplicate threads.

• get_animal

  Profile of one buildfarm animal: hardware/OS/compiler/owner, branches tracked, last build status, plus the last 20 runs (any branch).

• 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…

• get_author_messages

  Find messages by a specific author, optionally filtered by date range. Uses the f: (from) search prefix.

• get_callees

  Find all symbols that the given symbol calls/references (forward call graph).

• 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…

• get_commitfest

  Get a single commitfest with entries grouped by status and the top contributors (authors with the most entries).

• get_communities

  List Louvain community clusters detected in the call graph. Communities group related symbols by functional area.

Security scan

Recent checks