hipper.dev

Knowledge guardrails for AI coding agents

Your agent is frozen in time.
Hipper isn't.

Frontier models are brilliant but stale — they hallucinate packages that don't exist and write last-year's syntax for this-year's libraries. Hipper is a pre-flight check that grounds your agent in current truth before it writes a line of code.

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Two ways a stale model burns you

Slopsquatting

Models invent plausible-but-fake package names — blending eslint and a router into eslint-fast-router. Attackers pre-register those names on npm and PyPI, turning a hallucination into a supply-chain attack. Hipper checks every proposed package against the live registry and halts the install.

The modernization tax

A model trained before a library's breaking release keeps writing the old API — code that won't compile, then a doom-loop of errors and retries that burns thousands of tokens. Hipper injects the exact modern-syntax delta up front, so the loop never starts.

How it works

Hipper hooks the planning phase. Instead of dumping noisy web-search HTML into context, it serves a lean, cached delta from an indexed knowledge layer — sub-second, ~200 tokens.

  1. Ground — is gemini-3.5-flash real? Shut down? A typo? Checked against current vendor docs (Gemini, OpenAI, Claude, Mistral).
  2. Guard — proposed npm & PyPI packages classified: trusted, unverified, typosquat, or hallucinated → blocked pre-install.
  3. Inject — modern syntax deltas and "did-you-mean" corrections land in the agent's context, automatically.

More current code

Grounded model/API names and modern-syntax deltas from real, dated docs.

More secure code

Hallucinated and typosquatted dependencies stopped before they install.

Fewer tokens

A ~200-token cached delta instead of a web-search dump or a wrong-code retry loop.

It catches what a frozen model can't

$ hipper guard react eslint-fast-router expresss
✓ react              trusted
✗ eslint-fast-router HALT — hallucinated (did you mean eslint)
✗ expresss           HALT — possible typosquat (did you mean express)

Ship current, secure code — in fewer tokens.

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