packs.yantrikdb.com
A pack is a sealed, signed, measured YantrikDB file. Your local model mounts it and gains the knowledge, rules and skills inside — then gives them back, leaving your memory byte-for-byte as it was.
specimen
yantrik/uk-statutory-rates@0.1.0
domain knowledge · qwen3.6-27b
An 0.8B model with the same pack also scores 15/20 — a 34× parameter range landing on one number. Size predicts the baseline, not the result.
code against an unseen API
Execution-graded against an API younger than every model tested. Baseline fails at the interpreter, not the grader.
unrelated tasks · attach-harm gate
A pack that wins its category by wrecking everything else fails certification here.
catalog
Every listing is sandbox-evaluated: signature verified, memories scanned, installed rules shown verbatim.
UK statutory pay and tenancy deposit rules as published on gov.uk, for the rates in force from 1 April 2026: National Minimum Wage and National Living Wage by age band, the apprentice rate and the two-part condition that makes it expire, Statutory Sick Pay as the lower of £123.25 a week and 80% of average weekly earnings, and the England and Wales tenancy deposit regime. These are policy values, not derivable ones — a model without them does not reason its way to £12.71, it recites last year's figure with the same confidence. Every value here was read from the gov.uk page that publishes it on 2 August 2026.
The Python 3.13.5 standard library's actual API surface, generated from the interpreter itself: every signature via inspect.signature (correct by construction, never from memory), CPython's own docstring summaries, plus authored recipes for the tasks agents actually do. Aimed at the measured failure mode of local models — invented imports and wrong signatures.
The complete Model Context Protocol specification, revision 2026-07-28 — published after every current model's training data, which is exactly why it matters: this revision removes the initialize handshake and protocol sessions, deprecates Roots, Sampling and Logging, replaces server-initiated requests with Multi Round-Trip Requests (MRTR), and replaces resources/subscribe with subscriptions/listen. A model writing MCP code from memory writes the old protocol. Covers all 31 specification pages and the official extensions: the migration delta first, then tools, resources, prompts, the OAuth authorization framework with Client ID Metadata Documents, both transports, caching, pagination, completion, and the Tasks and Apps extensions.
The Java standard library's actual API surface, disassembled from the local JDK with javap: exact method signatures for the sixty classes agent code touches most — collections, streams, files, HTTP client, time, concurrency — correct by construction, never from memory. Complements yantrik/java-modern (idioms and style) with ground truth aimed at the measured failure mode of local models: invented methods and wrong signatures.
A complete design system for WordPress block themes, from activation to premium: the required file set and theme.json token discipline, a worked editorial design system with pairing rules (which fonts, colours and spacing go together), section-level exemplars for heroes, magazine layouts, pullquote and stats bands, galleries and contact sections — plus the composition grammar that took a 27B model to full marks on a rendered-craft benchmark and what is NOT a core block (there is no core/contact-form).
PHP 8 as it is actually written now: enums, readonly, constructor promotion, property hooks and match; the comparison and array semantics that changed under you; and the security defaults — PDO emulation, unserialize, escaping, randomness, password hashing — that decide whether the application is exploitable.
registry
Got a .ydbpack from a mirror, a colleague, a link? Check it against
the registry before mounting. Every build's file hash is recorded permanently.
sha256sum physics.ydbpack curl "https://packs.yantrikdb.com/api/v1/verify?sha256=<hash>"
A known hash returns the pack's identity, its publisher key and its listing. An unknown hash means the file is not what we evaluated — don't mount it.
install
Native — resolves the slug, checks the file against the registry, then installs:
curl -O https://packs.yantrikdb.com/client/yantrik_pack_client.py python yantrik_pack_client.py install <slug>
Manual — any local file, no network:
pip install yantrikdb yantrikdb pack install ./file.ydbpack
If a signature can't be verified, nothing mounts silently — the client names what it couldn't establish and waits for you to confirm.
YantrikDB