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docs(proxy): correct a stale unscannable-body claim in the proxy AGENTS.md - #1119
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…wnload-side ruling `crates/aisix-proxy/AGENTS.md` listed `audio.rs` and `images_edits.rs` as places that silently drop non-UTF-8 multipart `prompt` parts with `filter_map`. That has not been reachable since #1016: both surfaces call `dispatch::require_utf8_prompt_fields` after model resolution and before the guardrail chain runs, so an undecodable `prompt` part is answered 400 and the `filter_map` in their scan builders can no longer see one. The file is what agents read instead of the code, so the wrong sentence propagates; it is replaced with an explicit note that those two surfaces are not in that set. The same paragraph called the lossy-and-unrefused asymmetry "#1022's open product decision". #1022 is closed: the upload side now refuses under a text purpose (#1113/#1114/#1115), and the download side deliberately does not. That ruling is recorded as its own constraint next to the jobs/files rules, and the stale "needs a product decision" note on `jobs::scan_output_blob`'s doc comment is updated to match. Also checked against current code and left unchanged because they still hold: the `jobs::scan_output_blob` / binary-purpose `scan_input_blob` / `passthrough_route` lossy-scan claims, the four `record_unevaluable_*` sites, the `NO-GUARDRAIL-CHAIN:` marker and its parsing test, `usage_attr::bypass_reason`, `bypass_tag()` / `bounded_failure_tag`, `chat.rs`'s `UpstreamCharge.bypass_reason`, and the `varchar(64)` width of the control plane's `guardrail_bypassed_reason`. No behaviour change.
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Included review availability: Your plan provides up to 5 included reviews per hour; 0 remain after this review. 📝 WalkthroughWalkthroughUpdated proxy guardrail documentation for audio transcript scanning and multipart prompt validation. Removed the separate ChangesOutput scan documentation
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🟢 Approval recommended
The changes are documentation-only and the noted feedback is limited to minor clarity/wording improvements.
Pull request overview
This PR updates internal documentation for the proxy guardrail/scan behavior to remove a stale claim about non-UTF-8 multipart prompt handling on audio/images surfaces, and to document the settled product decision for /v1/files download-side lossy scanning vs refusal.
Changes:
- Update
crates/aisix-proxy/AGENTS.mdto removeaudio.rs/images_edits.rsfrom the “unscannable/unrecorded” set and add an explicit note explaining why they no longer qualify. - Add a dedicated AGENTS section documenting the deliberate decision that
/v1/files/{id}/contentremains lossy-scanned and never refused. - Update the rustdoc on
jobs::scan_output_blobto reflect that the download-side behavior is a settled decision (not an open question).
File summaries
| File | Description |
|---|---|
| crates/aisix-proxy/src/jobs.rs | Updates scan_output_blob doc comment to reflect the settled download-side decision. |
| crates/aisix-proxy/AGENTS.md | Corrects the stale audio/images claim and records the explicit ruling for /v1/files download-side behavior. |
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Inline comments:
In `@crates/aisix-proxy/AGENTS.md`:
- Around line 181-185: Clarify the documentation in crates/aisix-proxy/AGENTS.md
lines 181-185 so “never refused” and “no row ... makes it refuse” apply only to
undecodable output, while preserving that content-based guardrail verdicts can
still block downloads. Update the related wording in
crates/aisix-proxy/src/jobs.rs lines 618-620 so “unrefused by decision”
explicitly refers to decode failures; no other sites require changes.
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…ction to the multipart prompt Two changes, leaving this PR as the stale-claim correction alone. Removes the `/v1/files` download-blob section and the matching edit to `jobs::scan_output_blob`'s doc comment. Whether that scan keeps its current shape is being decided, and a constraint saying "this is deliberate, do not change it" would describe code that may not exist — the same class of stale statement this PR exists to fix. `jobs.rs` is back to its state on `main`. Narrows the correction itself, which was too broad. `audio.rs` is not wholly out of the unconditional-lossy-scan set: `transcription_output_text` still falls back to `String::from_utf8_lossy(body)` for the `text` / `srt` / `vtt` response formats, consults neither `refuses_unevaluable_output` nor `record_unevaluable_output_bypass`, and the original bytes are relayed. Only the multipart `prompt` path left the set, via #1016. That output site is now listed alongside `passthrough_route`, and the correction says explicitly that it is a separate site, so the next reader does not skip `audio.rs` when auditing unscannable bodies.
jarvis9443
changed the title
Documentation-of-code only, one file:
crates/aisix-proxy/AGENTS.md. No behaviour change, no code change, no test change.The stale claim
The "bypass reason rides the audit log" section listed
audio.rsandimages_edits.rsamong the sites that pass an unscannable body through unrecorded, on the grounds that they "drop non-UTF-8 multipart prompt parts withfilter_map". That has not been reachable since #1016. Both surfaces calldispatch::require_utf8_prompt_fieldsafter model resolution and before the guardrail chain is resolved (audio.rs:897,images_edits.rs:313), and the guard's field scope is exactly thefilter_map's — both are keyed on the part namedprompt— so an undecodablepromptis answered 400 and thefilter_mapcan no longer be handed one.This file is what agents read instead of the code, so a wrong sentence in it propagates rather than sitting still; a documentation change in another repository nearly published this one verbatim.
What the correction had to be narrower about
Only the multipart
promptpath left that set.audio.rsdid not:transcription_output_textstill falls back toString::from_utf8_lossy(body)for thetext/srt/vttresponse formats, consults neitherrefuses_unevaluable_outputnorrecord_unevaluable_output_bypass, and the original bytes are relayed to the caller — the same shape as thepassthrough_routeentry already in the list. So the output-side site is now listed explicitly, and the correction says in as many words that it is a separate site, so the next reader auditing unscannable bodies does not skipaudio.rson the strength of thepromptfix.The section also described the lossy-scan-but-forward asymmetry as "#1022's open product decision". #1022 is closed, so that clause is dropped; the mechanical statement it was attached to — none of these sites consults
refuses_unevaluable_*, and making them refuse would be a behaviour change rather than an observability one — is unchanged and still holds.Checked and left alone
Verified against current code in the same pass and unchanged because they still hold: the
jobs::scan_output_blob/ binary-purposescan_input_blob/passthrough_routelossy-scan claims, the fourrecord_unevaluable_*sites (count_tokens.rs,mcp.rs,jobs.rs,messages.rs), theNO-GUARDRAIL-CHAIN:marker and the test that parses for it,usage_attr::bypass_reason,bypass_tag()/bounded_failure_tag,chat.rs'sUpstreamCharge.bypass_reason, and thevarchar(64)width the control plane givesusage_events.guardrail_bypassed_reason.Tests
None — the branch contains no code change.
Summary by CodeRabbit
/v1/filesdownloads.