tax-cases SKILL.md skillA
tax-cases from filedcom/opentax is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add filedcom/opentax/tax-cases@git:20261018.c26716fPins git:20261018.c26716f in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- filedcom/opentax
- Path
.claude/skills/tax-cases/SKILL.md- Versions recorded
- 5
- Latest version
- git:20261018.c26716f, committed Oct 18, 2026
- First version recorded
- Apr 9, 2026
- Size
- 1,621 bytes
- Repository stars
- 131
- License
- AGPL-3.0
Add benchmark cases whose expected values come directly from IRS publications (VITA exercises, Pub 17 examples, form instruction examples). No reference calculator and no engine output.
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
# Tax Cases
**Source:** $ARGUMENTS — optional `{form}:{year}` (default `f1040:2025`), then
`vita`, `pub17`, `instructions`, or a free-form scenario (sourced from VITA
first). Cases go in `benchmark/cases/{form}/{year}/<NN-name>/`; the file format
is in `docs/architecture/STRUCTURE.md`.
## 1. Source
Spawn one agent with `.claude/skills/tax-cases/agents/irs-sourcer.md`, passing
the source and the output path `.state/bench/irs-cases-raw.json` (create
`.state/bench/` if missing; `.state/` is untracked). Stop if it finds nothing
usable, and report the sources tried.
## 2. Write
Number new cases after the highest existing `NN-` prefix. Spawn one agent per
raw case in a single message, with
`.claude/skills/tax-cases/agents/case-writer.md`, the raw case, its number and
the cases directory.
## 3. Check
- `bun run check:cases`: every input fits the node schema the CLI applies and
every `source` cites a publication.
- `bun run check:oracle`: a new case with a `source` passes; any change to an
existing case needs a `ledger.json` entry, which a human records.
Do not run the engine to fill or adjust values. Report the cases added
…Read the whole file at its exact version.
How to install
mdr add filedcom/opentax/tax-cases@sha256:0a33f038922d2f45The line at the top of this page pins the label git:20261018.c26716f, 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_2jwv4lccdbeine3x)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Apr 9, 2026 and Oct 18, 2026, about one every 48 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261018.c26716f latest | 2026-10-18 | c26716f | 1,621 B | A | view · diff |
| git:20261018.4d1a977 | 2026-10-18 | 4d1a977 | 3,832 B | A | view · diff |
| git:20260409.cfc78b1 | 2026-04-09 | cfc78b1 | 3,738 B | A | view · diff |
| git:20260409.ef0840c | 2026-04-09 | ef0840c | 3,567 B | A | view · diff |
| git:20260409.b08f1c9 | 2026-04-09 | b08f1c9 | 3,573 B | A | view |
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 (1621 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
filedcom/opentax · 131 stars · license AGPL-3.0 · pushed 2026-10-31 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_2jwv4lccdbeine3x GET https://markdownregistry.com/api/v1/resolve?ref=filedcom/opentax/tax-cases GET https://markdownregistry.com/api/v1/blob/0a33f038922d2f456e90cfdbaa144b8781782c17e021f1f96adadc44bedf26e4
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.