FoldInputGate
Open sourcePre-flight checks for AlphaFold job metadata before a run is accepted. Across 20,000 synthetic submissions it rejected 5,248 of 5,248 faulty jobs and 0 of 14,752 correct ones, and blocked 983 carrying a raw sequence.
What it checks
- Every required field present, and the digest actually a SHA-256
- Molecule type and stated purpose inside the declared supported set
- A raw sequence in the payload is blocked, not flagged, so it never leaves the boundary in a job submission
- Rejection happens before the pipeline is called, not after it returns
- Same jobs and seed reproduce the same verdicts on any machine
What it does not check
- It checks the request, not the prediction that comes back. Accepting a well-formed job says nothing about whether the structure is right.
- It does not run AlphaFold, read a sequence, or establish biological correctness.
- What each prevented run would have cost is not measured and is not claimed. That depends on sequence length, MSA search and hardware.
- The population is synthetic. The mix of faults in a real lab decides how much of this matters there.
Where it sits
DELA
FoldInputGate runs inside DELA
Deterministic Evidence Lineage Architecture
The underlying evidence changed. What does that affect?
DELA detects changes in scientific, operational or other source evidence, traces the affected dependencies, preserves the work that remains valid, selectively replays reproducible operations, and routes non-reproducible work to qualified human review.
material changeimmaterial changeaffectedpreservedreplayedheld for expert review
Evidence
Every verdict leaves a record
| Property | Behaviour |
|---|---|
| Determinism | The same input produces the same verdict. A result that does not reproduce is treated as a defect. |
| Signing | Verdicts are Ed25519 signed and anchored in a tamper-evident chain. |
| Replay | A sealed pack can be re-run later to detect verification drift. |
| Availability | Fail-closed. If this gate cannot be reached, the result is recorded as unavailable, never as a pass. |
| Independence | A third party can verify a pack without our source code and without contacting us. |
Other gates in DELA
BioChangeGate
Scientific state diffs, dependency impact, selective replay and sealed evidenc…
FoldGate
Proposed controlled handoff between organisations: checks declared purpose, pe…
ConfidenceGate
Confidence-contract routing for predicted structures. Turns a confidence band …
ProvenanceGate
Provenance continuity checks for scientific AI artefacts. Detects a broken cha…
ReplayGate
Re-runs sealed evidence packs to detect verification drift over time.
Run it against your own cases
The audit protocol is public. You do not need our permission, our source or our involvement to test a gate and publish what you find.