A revoked passport returns HTTP 200, status=revoked, band=unproven,
allowed_actions=[] (verified live 2026-08-13). resolve_passport keyed refusal
only on HTTP 4xx and band=="untrusted", so it returned band 'unproven' and the
agent was seated. Revocation was NOT enforced on the live auth path at all — and
now that agent auth actually works, a revoked agent could authenticate and act.
Extracts decide_trust(body) -> (band, actions) | raise. Only status=="active"
is allowed; revoked/suspended/frozen/unknown all refuse, fail-closed on the
field that carries the most consequential fact about an identity. The agent call
site turns that into a clean 403 passport_revoked.
This is the REAL revocation gate — the token cannot be un-issued, but its
standing is re-checked on every request, so revocation takes effect on the next
call with no webhook required. The Eternitas webhook remains useful for
invalidating locally-issued credentials/grants (G6.3, not built yet), but it was
never the primary gate and its being unwired is no longer a live exposure.
Behavioral tests: revoked body refused, active accepted, unknown/missing status
fails closed.
Co-Authored-By: Claude (Fable 5) <noreply@anthropic.com>
REOPENS the agent path — but only because possession is now actually proven.
EPT verification (api/app/ept.py): ES256 against Eternitas's published key set
at /.well-known/eternitas-keys. algorithms=["ES256"] makes alg:none and
algorithm confusion unrepresentable rather than merely unlikely; issuer and exp
are enforced by the library; an unknown kid is refused.
Order is deliberate: signature FIRST, trust lookup second. These EPTs live ~365
days and carry rev/tru baked in at issuance, so a year-old "rev: false" proves
nothing — revocation and band still come from a live lookup on every request.
Found while building it: real EPTs put the passport in the "sub" claim. The old
code read "passport"/"sub_passport", which no genuine EPT carries — so real
agents were never recognised and ONLY forged tokens ever authenticated. The
bypass was not just a hole, it was the only thing that worked.
Throttle (api/app/throttle.py): BAND_MULTIPLIER and rate_*_per_day were defined
and read by nothing. Now enforced on repo.create and grant.create, counted
against agent_actions (one source of truth, not a private counter that drifts
from the audit log). Fails CLOSED — a limiter that fails open protects you until
the moment something is wrong. Untrusted band is 403 read-only, not 429, because
"slow down" would be a lie.
Tests: 14 behavioral, signing real ES256 tokens with a locally-generated key so
they exercise the crypto path with no network dependency — genuine tokens
accepted, and alg:none / foreign key / tampered payload / expired / wrong issuer
/ unknown kid / missing claims all refused. 74 green.
Co-Authored-By: Claude (Fable 5) <noreply@anthropic.com>
Verified live 2026-08-13: a forged 'alg:none' token naming a passport lifted
from the logs returned HTTP 200 as that agent. The agent path read the passport
without verifying the EPT signature, asked Eternitas 'is this passport
reputable?', and seated the caller on a yes. That answers reputation, not
possession — anyone who knows a passport number could impersonate that agent on
the public API.
The human path already failed closed for exactly this reason
(require_verified_jwt). The gate was on the wrong path: it sat AFTER the agent
branch returned. The agent path now fails closed too, BEFORE the trust lookup,
so a forged token never even reaches Eternitas. Reopens automatically when the
ES256/JWKS verifier (G3.2/G9.1) exists and this gate consults it.
Adds BEHAVIORAL tests (not string-grep): a forged alg:none token exercised
through the real get_caller must raise, not authenticate. This is the test that
would have caught the bypass; the suite had 86 source-string assertions and
zero that ran the auth decision.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
The plane Windy Cloud does not have. Verified 2026-08-11: routes/storage.py and
its models contain ZERO occurrences of share/permission/acl/collaborat/seat/
version/snapshot/history/revision. This fills a hole rather than bolting onto
something that already had one.
- repos: create/list/get, repo_type required (I-7), reserved slugs, Gitea
reached ONLY through the membrane client (I-1)
- grants: human identity OR agent passport, exactly one enforced by a database
CHECK constraint; agent grants expire in 90 days by default
- versions: history in words a person recognises — no 'commit', no 'branch',
no 'repository' in any user-facing string (D-9/I-9), with a test that greps
the speak strings and fails on developer vocabulary
- private repos 404 rather than 403, so a stranger cannot learn one exists
Auth: three first-class caller classes (human OIDC / agent EPT / internal
service token), NO fourth, and no bypass env var — copied deliberately from the
desktop control server, the ecosystem's best Principle-#5 artifact.
G3.6 status-code law implemented: 400 and 404 REFUSE, 429/5xx retry then REFUSE.
A sibling maps 400/429 to 'unreachable' and soft-ALLOWS, which is inducible —
an attacker who wants the check skipped only has to make it rate-limit itself.
A test asserts resolve_passport has exactly one return path.
And I-8 applied to ourselves: G3.2's JWKS verifier does not exist yet, so the
human token path REFUSES in production rather than accepting an unverified JWT.
An unverified JWT is an authentication bypass, not a shortcut.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
