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TDD

mattpocock/tdd

Submitted by @yuki_t · Yuki Tanaka

Jul 6, 2026 · minted Jul 20, 2026

sha256:d8b942f88948…
FreeLog entrymintedinspectablecapabilitiesdigest-pinnedbridged

Skill Score

85/ 100 · Strong seal

WIP · 2.0-signals

Skill Score is actively being developed and will get sharper over time.

  • Sealed package20/20

    Minted .skill blob in the registry

  • Digest published15/15

    sha256 pin published on skillerr.com

  • Permissions declared15/15

    Capabilities / permissions declared

  • Source attested10/10

    Namespace, submitter, or source URL (not a vendor endorsement)

  • Transparency log0/15

    Log entry recorded at mint (offline verify pending) · https://search.sigstore.dev/?logIndex=2207397106

  • Release profile15/15

    evaluateReleaseProfile passed

  • Registry signal5/5

    3210 install(s) on registry

  • Not revoked5/5

    No revocation on log

Not a malware scan. Not “safe to run.” Transparent registry signals only. Inclusion is not endorsement.

Install

npx @skillerr/add mattpocock/tdd

Registry pin: sha256:d8b942f88948… (shown on TrustView; install by name resolves to this sealed blob)

Sealed install targets

Writes tdd.skill (sealed ZIP) plus optional skillerr.json. Not a bare SKILL.md.

Download tdd.skill

Sealed ZIP with digest + skillerr.json. Not a bare SKILL.md.

Free skills install with npx @skillerr/add. Sign in for account history.

Sealed artifact

Install and download deliver a digest-pinned open .skill package (docs.skillerr.com). Pasting a SKILL.md from the internet has none of this proof.

  • ✓

    tdd.skill ZIP

    Open-protocol .skill ZIP (skill.json + workflow), not a public raw SKILL.md URL

  • ✓

    Registry digest pin

    sha256:d8b942f88948…

  • ✓

    Inspect before run

    TrustView on skillerr.com; SKILL.md is a lossy adapter inside the package

  • ✓

    Permissions surface

    Capabilities declared for review before install

  • ✓

    Transparency log

    Public Rekor log entry recorded at mint

Permissions map

  • fsFilesystemelevated

    Read or write files in the workspace

  • shellShellhigh

    Run shell commands or processes

Declarations for humans and agents. Not a runtime sandbox guarantee.

Integrity verify

Confirm the digest on this page matches the live registry. This checks identity pins only: not a security scan.

expect sha256:d8b942f889488ea5…
npx @skillerr/add info mattpocock/tdd
curl -sS https://skillerr.com/api/v1/skills/mattpocock/tdd | grep -o '"digest":"[^"]*"'

Summary

Test-driven development workflow for agents: red, green, refactor with discipline.

Description

Bridged from Matt Pocock's TDD skill. Enforces writing failing tests first, minimal implementation to pass, then refactor: reducing speculative code from agents. Sealed for teams that want digest-pinned TDD discipline in CI agent loops.

Tags

tddtestingtypescriptbridged
Inspect package contentsSKILL.md inside .skill

TrustView preview on skillerr.com. Install and download serve the sealed package: there is no public raw SKILL.md URL.

# TDD

Practice test-driven development: red → green → refactor.

## Rules

1. Write a failing test that describes the desired behavior
2. Write the minimum code to make it pass
3. Refactor only after green
4. Do not add features without a failing test first

## When to use

Feature work, bug fixes, and refactors where correctness matters.

## Install

```bash
npx @skillerr/add @mattpocock/tdd
```

Source: https://github.com/mattpocock/skills

Verified

Public Ledger
Transparency log entry
https://search.sigstore.dev/?logIndex=2207397106

Recorded at mint to Sigstore Rekor. Offline verify pending on this host. Inclusion is not endorsement.

Transparency

published_at
2026-03-12T09:00:00.000Z
version
0.1.0
updated_at
2026-06-25T13:00:00.000Z
license
MIT
minted_at
2026-07-20T20:17:42.642Z
permanence
public Rekor log entry (mint receipt)
Transparency log entry
https://search.sigstore.dev/?logIndex=2207397106
digest
sha256:d8b942f889488ea5ace712a65fccb5dd7c00f6db4aa0c1ed55db79497e109299

Public permanence uses Sigstore Rekor. The ledger link is shown when a real logIndex was recorded at mint. Green Anchored requires an offline inclusion proof verify. Catalog claims alone never paint Anchored. Inclusion is not endorsement.