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fcvm-fleet: check viewer words with Claude Haiku 5.5 on Bedrock - #707
Turns on the viewer word check on the staging wall. The coordinator ran with the default --text-check none, which refuses every word: a viewer who writes "Hi!" reads "Hi!" was not added: the text check failed: no text check is configured.
Change
fcvm-fleet.tf, coordinator command: --text-check bedrock --text-check-model us.anthropic.claude-haiku-5-5 --text-check-region us-west-2, from the bedrock-haiku.tf locals. The deployed image has these flags (ejc3/fcvm, since 2026-10-22).
fcvm-fleet.tf, coordinator task role: bedrock:InvokeModel on the us.anthropic.claude-haiku-5-5 inference profile in the fleet account and on the anthropic.claude-haiku-5-5 foundation model in any region. The US profile routes from us-west-2 to us-east-1, us-east-2 and us-west-2, all of them fleet regions the account SCP admits. Also aws-marketplace:Subscribe limited to Haiku 5.5's product and ViewSubscriptions, as the box roles have, because the fleet account's first call subscribes it.
bedrock-haiku.tf: the header names the coordinator as another Haiku 5.5 caller.
scripts/test-fcvm-fleet.py: test_the_coordinator_checks_viewer_words_with_haiku_it_may_invoke pins the flags and the grant. It fails on main and passes here.
Model access in the fleet account
The fleet account has not called Bedrock before. If its first call is refused for model access (Anthropic's first-time use details not submitted for that account), the coordinator log shows text check failed with the Bedrock error and viewers read "couldn't check that word, try again" (ejc3/fcvm#1372, merged and deployed to staging). Submitting the use case for the fleet account, or from the organization's management account, fixes it with no Terraform change.
Verification
python3 -B scripts/test-fcvm-fleet.py: 51 tests OK; the new test fails against main's fcvm-fleet.tf.
scripts/test-bedrock-haiku.py, test-fcvm-fleet-account.py, test-dolphin-region-scp.py: OK. terraform fmt -check: clean.
The checker's prompt against us.anthropic.claude-haiku-5-5 in us-west-2 from a dev box: "Hi!" and "Hello from 8 GPUs" allowed, an insult, a phone number and "kill" + "you" refused.
After apply: write a word on stage.fcvm.dev and see it in the scene.
Summary by CodeRabbit
New Features
The fleet coordinator now checks viewer-submitted words using an AI text checker, helping identify potentially inappropriate content.
The staging coordinator ran with the default --text-check none, which refuses
every viewer word ("the text check failed: no text check is configured").
- fcvm-fleet.tf: the coordinator command gains --text-check bedrock with the
US inference profile us.anthropic.claude-haiku-5-5 in us-west-2 (the
bedrock-haiku.tf locals).
- fcvm-fleet.tf: the coordinator task role may call bedrock:InvokeModel on that
profile in the fleet account and on the anthropic.claude-haiku-5-5 foundation
model in any region it routes to (us-east-1, us-east-2, us-west-2, all fleet
regions the account SCP admits), plus the Marketplace subscribe for that one
product on the account's first call, as the box roles have.
- bedrock-haiku.tf: header names the coordinator as another Haiku 5.5 caller.
- scripts/test-fcvm-fleet.py: pins the flags and the grant.
The FCVM fleet coordinator now enables Bedrock text checking with the configured Haiku inference profile and region. Its task role gains model invocation and AWS Marketplace permissions. A test checks the command configuration and policy.
Changes: FCVM Haiku text checking
Layer / File(s)
Summary
Configure and authorize Haiku checks fcvm-fleet.tf, bedrock-haiku.tf, scripts/test-fcvm-fleet.py
The coordinator command enables Bedrock text checking with the configured Haiku profile and region. Its task role gains permission to invoke the inference profile and foundation model, subscribe to the specified Marketplace product, and view subscriptions. The test checks the command arguments and policy resources.
Issue 712 describes staging rejecting viewer words because no text check is configured. This change enables the coordinator’s Bedrock text check.
Merge Risk: Moderate · up to 23b48
Viewer-word checks may fail on first use. Grant the missing permission or pre-subscribe the account before merging.
Pre-merge checks: 4 · 1
Failed checks: 1 warning
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Explanation
Resolution
Docstring Coverage
Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Documentation-only edits and deletions within survi…
Write docstrings for the functions missing them to satisfy the coverage threshold.
Passed checks: 4 passed
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Explanation
Description Check
Check skipped - CodeRabbit’s high-level summary is enabled.
Title check
The title "fcvm-fleet: check viewer words with Claude Haiku 5.5 on Bedrock" matches the main change. The PR adds Bedrock text-check flags to the coordinator command and grants its task role permission…
Linked Issues check
Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check
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Full details: Title check
Explanation
The title "fcvm-fleet: check viewer words with Claude Haiku 5.5 on Bedrock" matches the main change. The PR adds Bedrock text-check flags to the coordinator command and grants its task role permission to invoke the Haiku 5.5 inference profile and model. The title is specific and short. It names the component, the action, and the model. The Marketplace permissions and the test additions are supporting details and do not need to appear in the title.
Full details: Docstring Coverage
Explanation
Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Documentation-only edits and deletions within surviving functions are included; unchanged diff context and fully deleted functions are excluded. Analyzed 1 functions across 1 files. (2 skipped: 2 unsupported.)
Resolution
Write docstrings for the functions missing them to satisfy the coverage threshold.
Finishing Touches: 💡 1
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Actionable comments posted: 1
🪄 Fix comments: Fix CodeRabbit comments on this PR
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Inline comments:
Review comments at @fcvm-fleet.tf:
- Around line 743-745: Update the Action list in the
SubscribeClaudeHaiku55OnFirstUse permission to include
aws-marketplace:Unsubscribe and aws-marketplace:ViewSubscriptions alongside
aws-marketplace:Subscribe, preserving the existing Haiku product condition.
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Commits
Reviewing files that changed from the base of the PR and between 52716a5 and 23b481f.
Files selected for processing: 3
bedrock-haiku.tf
fcvm-fleet.tf
scripts/test-fcvm-fleet.py
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Ready at exact head 23b481f: independent HIGH code/security review, 75 ARM tests, 11 positive/negative IAM simulations, required CI, and Codex code/security reviews passed. CodeRabbit's first-use finding is resolved by the successful fleet-account activation check and confirmed AVAILABLE agreement (see resolved thread); no application Unsubscribe permission was added. Greptile did not respond and is not counted as an approval.
The actual policy candidate was checked against IAM's aggregate inline limit and fits. Deployment will verify the live role, exact checker prompt and coordinator service health. No test scene mutation or GPU launch is needed.
The combined deployment is complete at e4e019d. Terraform apply succeeded, followed by a full 2,524-resource plan with exit 0 / no changes. /infra/applied-status is published clean for this commit.
The new coordinator revision 45 has one running task, zero pending, a completed rollout and a healthy DNS target. The deployed flags select Bedrock, the intended Haiku 5.5 profile and us-west-2. Simulations against the actual task role allow all four required profile/model resources and deny another model; the model agreement remains AVAILABLE. A short administrative invocation using the deployed checker's exact public prompt returned ALLOW for Hi!. This verifies the account/model path separately from the actual-role IAM checks. The initial file-descriptor-limit warning was nonfatal; the process began listening and passed health checks.
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Turns on the viewer word check on the staging wall. The coordinator ran with the default
--text-check none, which refuses every word: a viewer who writes "Hi!" reads"Hi!" was not added: the text check failed: no text check is configured.Change
fcvm-fleet.tf, coordinator command:--text-check bedrock --text-check-model us.anthropic.claude-haiku-5-5 --text-check-region us-west-2, from thebedrock-haiku.tflocals. The deployed image has these flags (ejc3/fcvm, since 2026-10-22).fcvm-fleet.tf, coordinator task role:bedrock:InvokeModelon theus.anthropic.claude-haiku-5-5inference profile in the fleet account and on theanthropic.claude-haiku-5-5foundation model in any region. The US profile routes from us-west-2 to us-east-1, us-east-2 and us-west-2, all of them fleet regions the account SCP admits. Alsoaws-marketplace:Subscribelimited to Haiku 5.5's product andViewSubscriptions, as the box roles have, because the fleet account's first call subscribes it.bedrock-haiku.tf: the header names the coordinator as another Haiku 5.5 caller.scripts/test-fcvm-fleet.py:test_the_coordinator_checks_viewer_words_with_haiku_it_may_invokepins the flags and the grant. It fails on main and passes here.Model access in the fleet account
The fleet account has not called Bedrock before. If its first call is refused for model access (Anthropic's first-time use details not submitted for that account), the coordinator log shows
text check failedwith the Bedrock error and viewers read "couldn't check that word, try again" (ejc3/fcvm#1372, merged and deployed to staging). Submitting the use case for the fleet account, or from the organization's management account, fixes it with no Terraform change.Verification
python3 -B scripts/test-fcvm-fleet.py: 51 tests OK; the new test fails against main'sfcvm-fleet.tf.scripts/test-bedrock-haiku.py,test-fcvm-fleet-account.py,test-dolphin-region-scp.py: OK.terraform fmt -check: clean.us.anthropic.claude-haiku-5-5in us-west-2 from a dev box: "Hi!" and "Hello from 8 GPUs" allowed, an insult, a phone number and "kill" + "you" refused.Summary by CodeRabbit