falsifiable-testing SKILL.md skillA
falsifiable-testing from annatchijova/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add annatchijova/skills/falsifiable-testing@git:20260815.2390440Pins git:20260815.2390440 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- annatchijova/skills
- Path
falsifiable-testing/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260815.2390440, committed Aug 15, 2026
- Size
- 11,427 bytes
- Repository stars
- 9
- License
- a license file GitHub does not identify
Write tests that can actually fail, and prove it — see the test red before you trust it green, break the code deliberately as a negative control, and strengthen the oracle from "it ran" to "it is right". Use whenever tests are being written, reviewed, fixed, or relied on: "add tests for this", "write unit tests", "the tests pass", "improve coverage", "this test is flaky", "why didn't the tests catch this", "mock this out", "update the snapshot", or a PR whose diff adds test files. Also trigger…
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Falsifiable Testing A test is an experiment, and an experiment that cannot come out the other way measures nothing. Most useless tests are not wrong — they are unfalsifiable: they would pass on correct code, on broken code, and on no code at all. They accumulate quietly, and the suite's green becomes a ritual rather than evidence. In the Peircean loop this skill governs **induction**: the step where a prediction meets the world. A test is the apparatus. Its assertion is the **oracle** — the thing that decides right from wrong. Weak oracle, weak induction, no matter how many tests there are. The one rule that generates most of the others: **never trust a test you have not seen fail.** Composes with the library: `diagnosing-bugs` (the red-capable loop comes first), `abductive-engineering` (test = induction), `honest-degradation` (a test that can't tell "passed" from "skipped" lies), `deterministic-core` (flakes are nondeterminism you haven't found yet), `software-archaeology` (a characterization test is how you pin behavior you don't understand yet). --- ## Part 1 — See it red first Before a test counts as evidence, it must have failed at least once for the …
Read the whole file at its exact version.
How to install
mdr add annatchijova/skills/falsifiable-testing@sha256:bad816f7aed59d8bThe line at the top of this page pins the label git:20260815.2390440, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_2irvbfc553plx4nk)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Aug 15, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (11427 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
annatchijova/skills · 9 stars · license a license file GitHub does not identify · pushed 2026-11-02 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_2irvbfc553plx4nk GET https://markdownregistry.com/api/v1/resolve?ref=annatchijova/skills/falsifiable-testing GET https://markdownregistry.com/api/v1/blob/bad816f7aed59d8bdc3e371117458fcdfe79db8e272ceb3efbda20ba2cefa2ea
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.