Continuous Adversarial Red-Teaming, Prompt-Injection & Policy Self-Hardening
Continuously generate adversarial attacks (indirect prompt injection in untrusted tool outputs, PII exfiltration, unauthorized tool calls, jailbreaks) against your agent, patch system guardrails, and verify that attack success rate drops without spiking false-positive refusals.
At a glance — Oct 2026
Updated 2026-10-28 · forward this page: /jtbds/automated-red-teaming-self-hardening#briefPromotion class: deterministic_source_reverified · 8.5 ± 0.5 (8.0–9.0 · editorial_prior) · Pricing verified 2026-10-25.
- Depot Pick
- Promptfoo · 8.46/10 for this job (curated estimate, high confidence)
Promptfoo includes an open-source automated red-team generator (`promptfoo redteam`, Apache-2.0 CLI) covering indirect prompt injection, tool/BFLA abuse, SSRF, and PII leaks, letting agents run closed-loop adversarial probes in CI before every deploy.
- Runner-up
- Lakera Guard · 8.31/10
Scores higher than the pick on: Capability fit, Latency / reliability, Developer & agent DX.
- When not to use the pick
- Low-latency inline runtime prompt-injection firewall in production — Lakera Guard; programmable input/output validator rails in Python/TS — Guardrails AI; managed enterprise hallucination and policy evaluation suites — Patronus AI.
- Lock-in / migration
- The pick has lower stored lock-in risk than runner-up Lakera Guard (2.5 vs 5.5). Pick exit signals: open source (provider tag `oss`).
- Sourced price (no comparable unit)
Pick: no sourced price in this job's unit (no_sourced_price).
No cheapest SKU (no_comparable_unit_for_job). No price was invented.
- Free option (runnable / substitutable)
- No runnable free tier lists this job. A cheap paid SKU or benchmark dataset is not a runnable free option.
- Failure modes to watch
- No failure mode plainly applies to this job (no_failure_mode_plainly_applies).
Cite: Agent Provider Depot, Depot Pick for automated-red-teaming-self-hardening: promptfoo (editorial prior, scores as of 2026-10-28). Agents: GET /api/decide?jtbd=automated-red-teaming-self-hardening
Promptfoo
Promptfoo includes an open-source automated red-team generator (`promptfoo redteam`, Apache-2.0 CLI) covering indirect prompt injection, tool/BFLA abuse, SSRF, and PII leaks, letting agents run closed-loop adversarial probes in CI before every deploy.
Pricing (directional): As of 2026-10-24 (promptfoo.dev/pricing, fetched 2026-10-24): Community 'Free Forever' ('Our open-source tool, perfect for individual developers and small teams.') with 'Red teaming (10k probes/month)' and 'Run locally or self-host on your …
Top pick (8.46) and #2 runner-up (8.31) are separated by 0.15 points (<= 0.35 weight-sensitivity band). Treat them as co-picks and use the workload tie-breaker rule below rather than the raw composite decimal.
Workload Tie-Breaker Rule: Low-latency inline runtime prompt-injection firewall in production — Lakera Guard; programmable input/output validator rails in Python/TS — Guardrails AI; managed enterprise hallucination and policy evaluation suites — Patronus AI.
Lock-in risk: higher = more lock-in (worse). Overall already inverts this dimension.
Default OSS eval harness. Braintrust when you want hosted collaboration; Promptfoo when you want local/CI control.
Quote for Continuous Adversarial Red-Teaming, Prompt-Injection & Policy Self-Hardening
Depot Pick stays Promptfoo. Prices below are sourced SKU rows only (as of 2026-10-28). Input and output are not blended. GET /api/quote?jtbd=automated-red-teaming-self-hardening
Nothing was compared. no comparable sourced unit for this job; chat input $/1M and other units were not borrowed pickIsPriceWinner is null.
Sourced price unavailable for the Depot Pick. No row in the pricing index.
4 of 4 candidates have no sourced price row. 4 are excluded from the Matching price comparison (none). no comparable sourced unit for this job; chat input $/1M and other units were not borrowed
Runners-up
Lakera Guard
Depot pick for a dedicated prompt-injection firewall in front of any LLM. NeMo when you need programmable…
Guardrails AI
OSS programmable rails peer to NeMo Guardrails. Lakera when you want a hosted injection firewall API…
Patronus AI
Layer on when regulated hallucination/safety gates matter more than general CI evals. Lakera for injection…
When NOT to use the top pick
Low-latency inline runtime prompt-injection firewall in production — Lakera Guard; programmable input/output validator rails in Python/TS — Guardrails AI; managed enterprise hallucination and policy evaluation suites — Patronus AI.
Full ranking (score table)
Ranked with this JTBD's weights. Scores are curated estimates unless marked otherwise. Agents: prefer /api/decide then this table for tie-breaks.
| # | Provider | Overall | Fit | $/perf | Latency | DX | Lock-In Risk | As of |
|---|---|---|---|---|---|---|---|---|
| 1 | PromptfooDepot Pick | 8.5 | 8.2 | 9.2 | 7.8 | 8.8 | 2.5 | 2026-10-28 |
| 2 | Lakera Guard | 8.3 | 8.8 | 7.8 | 8.4 | 9.0 | 5.5 | 2026-10-28 |
| 3 | Guardrails AI | 8.2 | 8.4 | 8.8 | 7.8 | 8.2 | 3.0 | 2026-10-28 |
| 4 | Patronus AI | 7.4 | 8.4 | 5.5 | 8.0 | 7.2 | 5.5 | 2026-10-28 |
Score methodology for this job
Track both Attack Success Rate (`ASR`, lower is better) on adversarial probes and False Positive Refusal Rate (`FPR`, lower is better) on benign golden tasks so hardening never lobotomizes the agent.
capabilityFit: 28%pricePerformance: 16%latencyReliability: 14%developerDx: 16%privacyPosture: 14%lockInRisk: 6%maturity: 6%