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Show the DNS records a Space domain actually asks for - #106
The domains page and the sf domains add example told people to publish two _stattic-verify TXT records plus A and AAAA records for every domain. That is not what a Space domain asks for.
What production stores for bound Space domains (read-only replica, 2026-11-07): 3,510 A records, 278 CNAME records, 0 AAAA records, and 11 TXT records, all of them the provider's atomic-domain- challenge. No Space domain carries a team TXT proof.
This changes:
/domains, "The DNS records": the table now shows two A records on the apex and a www CNAME. A new "When a TXT record shows up" section covers the two cases that do need one: the atomic-domain- challenge when another host holds the hostname, and the _spacefast-claim.<domain> record when another Space serves it.
/cli/domains: the sf domains add output example matches.
evals.yaml: the domain-dns-records answer matches the page.
Checked: verify-prose, verify-public-safety, and bun run validate pass. The _spacefast-claim name, the CNAME warning, and the "two atomic-domain- records fail" rule come from the control plane and the provider's own check.
A matching monorepo change renames the Spacefast team proof from _stattic-verify to _spacefast-verify for the cases that still show it.
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Summary by CodeRabbit
Documentation
Updated custom-domain DNS guidance to show A records for the apex and standalone subdomains, plus a www CNAME pointing to the apex.
Clarified that record values should come from the domain’s setup instructions and that ownership TXT records may be required when a hostname is already in use.
Added guidance to remove a same-name CNAME before adding a TXT record and to keep exactly one ownership TXT record per hostname.
Updated the CLI example and DNS evaluation expectations to match these instructions.
The domains page told everyone to publish two `_stattic-verify` TXT
records, two `A` records and two `AAAA` records. A Space domain asks for
two `A` records on the apex and a `www` CNAME, and no TXT record unless the
hostname is already in use elsewhere. That last case now has its own
section: the provider's `atomic-domain-` challenge, and the
`_spacefast-claim` record for a hostname another Space serves.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
content/quickstart.mdx (line 85) says sf domains add prints a TXT record that proves you control the name plus A records. This contradicts the new /domains text ("Most domains need no TXT record") and the new CLI output example. Found by Indent Review Agent
The diagnostics examples in content/(serve)/domains.mdx (line 200) and content/cli/domains.mdx (lines 135-136) show txt=ok for the apex and txt=missing for www. With no TXT record on a normal setup, these suggest a TXT record is missing at www. Found by Indent Review Agent
The domain_in_use row in content/(serve)/domains.mdx (line 230) now includes "a previous attachment is still being removed". The next row defines domain_detach_in_progress as a previous unassign still draining, and the Moving section says reassigning during teardown returns that code. Readers can't tell which code a draining unassign returns. Found by Indent Review Agent
The claim bullet in content/(serve)/domains.mdx says "verify with move and the domain moves without the record" but never names the command. Neither this page nor content/cli/domains.mdx mentions sf domains check --move, so readers can't tell what to run. Found by Indent Review Agent
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3 issues already resolved
The dns_records_missing section in content/troubleshooting.mdx still says Spacefast issues A, AAAA and TXT records only, never a CNAME, and links to /domains, which now shows a www CNAME and no AAAA. Line 90 also says to restore the TXT record, which assumes every domain has one. (fixed by commit 0c9b16a) Found by Indent Review Agent
The new bullet in content/(serve)/domains.mdx says adding a hostname another Space serves returns a _spacefast-claim.<domain> TXT record to publish and verify. The same page still says "There is no move operation" and that assigning a domain bound elsewhere fails with domain_in_use, and the error table lists domain_in_use for "Another verified claim serves it". Readers can't tell whether the add succeeds with a claim or fails. (fixed by commit 0c9b16a) Found by Indent Review Agent
The claim bullet in content/(serve)/domains.mdx says the move happens once you can remove the domain from the holding Space, otherwise remove it there first, and that a claim expires after 24 hours. Line 186 and the hostname_claim_conflict row (line 210) say a team that proves control can take over once the holder stops verifying. A different team can't remove the domain from the holder's Space, so readers get two incompatible paths, and it's unclear whether the 24-hour expiry applies to the takeover wait. (fixed by commit 1616631) Found by Indent Review Agent
{
"summary": "Quickstart and diagnostics still show old TXT",
"findings": [
{
"fix": "Write it as \"run `sf domains check <domain> --move`\". Mention the API equivalent too if one exists. Optionally document `--move` under `sf domains check` in content/cli/domains.mdx.",
"line": 92,
"path": "content/(serve)/domains.mdx",
"issue": "The rewritten claim bullet says \"verify with move and the domain moves without the record\" but never names the command. The only place it exists is the generated CLI reference (`sf domains check --move`: \"Move a domain you control from another Space without TXT verification\"). content/cli/domains.mdx doesn't mention `--move` either, so readers can't tell from these pages what to run.",
"title": "\"Verify with move\" doesn't name the command or flag",
"severity": "nit"
},
{
"fix": "Change it to say a TXT record is printed only when the hostname is already in use elsewhere, and that otherwise an apex gets A records plus a `www` CNAME.",
"line": 85,
"path": "content/quickstart.mdx",
"issue": "Still open, unchanged. The quickstart says `sf domains add` prints \"a TXT record that proves you control the name, and A records that route traffic\". That contradicts /domains, the CLI output example, and the troubleshooting page.",
"title": "Quickstart still promises a TXT record for every domain",
"severity": "bug"
},
{
"fix": "Change the example rows to `txt=not_required`.",
"line": 200,
"path": "content/(serve)/domains.mdx",
"issue": "Still open, unchanged. The diagnostics examples here and in content/cli/domains.mdx (lines 135-136) show `txt=ok`/`txt=missing` for a plain apex+www setup, which the docs now say needs no TXT record.",
"title": "Diagnostics examples still show a TXT requirement on a plain apex/www setup",
"severity": "nit"
},
{
"fix": "Spell out which code a still-draining unassign returns, or drop the draining clause from `domain_in_use`.",
"line": 230,
"path": "content/(serve)/domains.mdx",
"issue": "Still open, unchanged. `domain_in_use` lists \"a previous attachment is still being removed\", while `domain_detach_in_progress` and the Moving section say a draining unassign returns `domain_detach_in_progress`.",
"title": "`domain_in_use` row overlaps `domain_detach_in_progress`",
"severity": "nit"
}
]
}
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content/(serve)/domains.mdx
content/troubleshooting.mdx
Walkthrough
The DNS guidance now describes A records for the apex, a CNAME for www, and conditions that require TXT ownership records. The CLI example and domain DNS evaluation expectations reflect the updated records.
Changes: Domain DNS guidance
Layer / File(s)
Summary
Standard DNS records content/(serve)/domains.mdx, content/cli/domains.mdx, evals.yaml
The examples and evaluation expectations describe two apex A records and a www CNAME. The guide also covers standalone subdomains and updates its verification warning.
The guide describes two cases that require TXT ownership proof, the record name and value patterns, removal of a conflicting CNAME, and the requirement for one atomic-domain- record per hostname.
spacefast/docs#104: Documents DNS records and ownership verification, including atomic-domain- records and CNAME conflicts.
Suggested reviewers:alexanderaidun-a8c
Merge Risk: Low · previous review 3a910
The DNS guidance no longer warns about leftover IPv6 records, and the cross-Space claim text may conflict with the documented move procedure. Both are bounded documentation fixes that should be made, but they do not block merging.
Architecture risk: Low · up to 3a910
The change affects 2 systems.
Changed systems:content, evals.yaml
Architecture concerns
No architecture-level concerns identified.
Review details
Systems and components
observed — content (service) was modified; 2 changed files map to changed impact.
observed — evals.yaml (service) was modified; 1 changed file maps to changed impact.
Before / after behavior
observed — Modified behavior in content/(serve)/domains.mdx: The DNS example changes from six records—two verification TXT records, apex and www A records, and two AAAA records—to two apex A records and a www CNAME, with the usual count described as three. It adds guidance that standalone subdomains receive two A records and no companion record, and removes the team-ID TXT explanation and the warning’s AAAA condition.
observed — Modified behavior in content/(serve)/domains.mdx: Adds a section describing two cases that require TXT ownership proof: another host holds the hostname, or another Space serves it. The guidance specifies the record name/value patterns, removal of a conflicting same-name CNAME, and that exactly one atomic-domain- record per hostname is required; the old statement that Spacefast generates only A, AAAA, and TXT records is removed.
observed — Modified behavior in content/cli/domains.mdx: The DNS example replaces the TXT verification record and single apex A record with two apex A records and a www CNAME pointing to the apex.
observed — Modified behavior in evals.yaml: The domain-dns-records expected-answer list replaces the _stattic-verify.example.com TXT-record expectation with an expectation for no TXT record unless the hostname is already in use elsewhere, and specifies A records for example.com and a CNAME for www.example.com instead of the general A-record and apex-plus-www expectations.
Pre-merge checks: 5
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Actionable comments posted: 2
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Inline comments:
Review comments at @content/(serve)/domains.mdx:
- Line 92: Clarify the TXT-claim guidance near “Another Space serves it” to
distinguish a hostname still assigned to another Space from one that has been
unassigned. State that publishing the claim does not complete the move while the
competing Space still verifies the hostname; takeover can complete only after
that Space stops verifying it, consistent with the documented
unassign-before-reassign procedure.
- Line 84: Update the DNS guidance to tell readers to remove stale AAAA records
pointing to a previous host, since they can direct IPv6 visitors there even when
the A records point to Spacefast. Preserve the existing A-record verification
guidance.
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Files selected for processing: 3
content/(serve)/domains.mdx
content/cli/domains.mdx
evals.yaml
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- A domain another Space serves now creates a claim with a TXT record, not a
domain_in_use error; the move and error-table sections say so.
- The claim bullet says when the move completes and that a claim expires.
- A subdomain usually gets two A records; the TXT cases still apply.
- Remove a leftover AAAA too, since it sends IPv6 visitors to the old host.
- The troubleshooting page no longer says a CNAME is never issued.
A claim moves the hostname either when you can also manage the Space that
holds it, or once its TXT record is seen. A different team takes the second
path; nothing waits for the other claim to stop verifying. The diagnostic row
now names the code the API returns, domain_ownership_required.
domains.mdx: keep main's record list from #106 (apex gets three records, a
subdomain two; a TXT record only when the hostname is in use elsewhere), and
link the TXT section to the new Domain verification records page.
Domain verification records: say up front that most hostnames need no TXT
record, and name the two kinds (`atomic-domain-` for WP Cloud,
`_spacefast-claim.<domain>` to move from another Space) to match #106.
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The domains page and the
sf domains addexample told people to publish two_stattic-verifyTXT records plusAandAAAArecords for every domain. That is not what a Space domain asks for.What production stores for bound Space domains (read-only replica, 2026-11-07): 3,510
Arecords, 278CNAMErecords, 0AAAArecords, and 11 TXT records, all of them the provider'satomic-domain-challenge. No Space domain carries a team TXT proof.This changes:
/domains, "The DNS records": the table now shows twoArecords on the apex and awwwCNAME. A new "When a TXT record shows up" section covers the two cases that do need one: theatomic-domain-challenge when another host holds the hostname, and the_spacefast-claim.<domain>record when another Space serves it./cli/domains: thesf domains addoutput example matches.evals.yaml: thedomain-dns-recordsanswer matches the page.Checked:
verify-prose,verify-public-safety, andbun run validatepass. The_spacefast-claimname, the CNAME warning, and the "twoatomic-domain-records fail" rule come from the control plane and the provider's own check.A matching monorepo change renames the Spacefast team proof from
_stattic-verifyto_spacefast-verifyfor the cases that still show it.🤖 Generated with Claude Code
Open in [code]smith · Need help on this PR? Tag
@codesmith-botwith what you need.Summary by CodeRabbit
wwwCNAME pointing to the apex.