cd /news/ai-safety/show-hn-sentinelgate-drop-prompt-inj… · home › topics › ai-safety › article
[ARTICLE · art-153700] src=sentinelgate.dev ↗ pub= topic=ai-safety verified=true sentiment=· neutral

Show HN: SentinelGate – Drop prompt injections at Token 0 before LLM inference

SentinelGate launched as an OpenAI-compatible API gateway that evaluates prompts in-memory and blocks suspected prompt injections and tool hijacks at "Token 0," before any upstream LLM tokens are spent. The service, pitched for high-stakes AI and ISO 20022 financial rails, seals each action with Ed25519-signed evidence bags and, on a veto, drops the socket via XDP_DROP in under 50 microseconds. Developers can point any OpenAI-compatible client at base_url https://api.sentinelgate.dev/v1 with an sk-sent- key; the Developer tier covers 50,000 requests per month, and a public kinematic preview runs without an API key.

read1 min views3 publishedOct 20, 2026

Developer

For individual builders, staging environments, and prototype validation.

  • 50,000 requests / month
  • 0-token prefill veto
  • .sent attestation hashes
  • Public notary lookups

Checkout Developer

        Cryptographic execution control for high-stakes AI. SentinelGate halts adversarial injections and tool hijacks at Token 0—evaluating prompt kinematics in-memory with sub-millisecond overhead, before execution, and before token spend. Every action is sealed with tamper-evident Ed25519 evidence bags engineered for **ISO 20022 financial rails**.

Run a public kinematic preview — no API key required. Emerald = permit. Coral = Phase III topological collapse.

{
  "status": "resting",
  "note": "Awaiting audit — Run Audit or select a preset"
}

Provisioned automatically via billing webhooks — keys minted as sk-sent-XXXX into the Sentinel ledger.

For live production systems requiring high throughput and strict veto enforcement.

Dedicated clusters, custom kinematic threshold tuning, and financial rail SLAs.

XDP_DROP sub-50µs socket severing) or email directly: [email protected]

Point any OpenAI-compatible client at SentinelGate — swap the base URL and keep your existing SDK.

from openai import OpenAI

client = OpenAI(
    api_key="sk-sent-XXXX",
    base_url="https://api.sentinelgate.dev/v1",
)

completion = client.chat.completions.create(
    model="meta-llama/Llama-3.3-70B-Instruct",
    messages=[{"role": "user", "content": "Execute financial database reconciliation."}],
)

Differentiation, financial rails, integration, retention, veto mechanics, and key operations.

SplmtryData) envelopes. base_url to https://api.sentinelgate.dev/v1 and pass your sk-sent-... API key. Prompts, schemas, streaming, and tool calls work out of the box with zero code refactoring. kinematic_security_veto, and drops the socket before upstream tokens are consumed. The client receives an Ed25519-signed evidence bag detailing the thermodynamic state coordinates and attestation hash for audit logging.

── more in #ai-safety 4 stories · sorted by recency
── more on @sentinelgate 3 stories trending now
sponsored brought to you by zahid.host 4,200+ EU-deployed projects
reading about agents? ship yours in a single git push.

Run your AI side-project on zahid.host

EU-based hosting, git-push deploys, automatic HTTPS, no cold starts. Free tier with a custom domain — perfect for shipping the agent you just read about.

$git push zahid main
→ Live at https://your-agent.zahid.host ✓
Get free account → Pricing
from €0/mo · no card required
LIVE [news/show-hn-sentinelgate…] indexed:0 read:1min 2026-10-20 · —