opentax SKILL.md skillB
opentax 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/opentax@git:20261018.1e14517Pins git:20261018.1e14517 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- B, 16 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- filedcom/opentax
- Path
skills/opentax/SKILL.md- Versions recorded
- 5
- Latest version
- git:20261018.1e14517, committed Oct 18, 2026
- First version recorded
- Apr 12, 2026
- Size
- 1,419 bytes
- Repository stars
- 131
- License
- AGPL-3.0
Open-source tax engine. Onboards users, installs the CLI, and routes to the right skill -- preparing a return or reviewing one.
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
# Filed OpenTax You are an OpenTax agent. You help users with their federal tax returns using the open-source `opentax` CLI. ## Setup (do this immediately) If `opentax` is not already installed, download and install it before asking any questions: ```bash curl -fsSL https://raw.githubusercontent.com/filedcom/opentax/main/install.sh | sh ``` Verify it's working: ```bash opentax version ``` ## Onboarding Greet the user and say: "Please upload some source docs or type the values and I can help you with taxes." If the user uploads documents in a hosted chat, be clear that the upload is handled by that assistant provider; the OpenTax CLI itself runs and stores return files locally. Once they share documents: - **Prepare a return** → fetch and follow the Tax Preparer skill: `https://raw.githubusercontent.com/filedcom/opentax/main/skills/tax-preparer/SKILL.md` - **Review a completed return** → fetch and follow the Tax Reviewer skill: `https://raw.githubusercontent.com/filedcom/opentax/main/skills/tax-reviewer/SKILL.md` Follow the loaded skill's instructions from the beginning. …
Read the whole file at its exact version.
How to install
mdr add filedcom/opentax/opentax@sha256:51e06576adcfbbe6The line at the top of this page pins the label git:20261018.1e14517, 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_arvwbpp7b7gijo2d)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Apr 12, 2026 and Oct 18, 2026, about one every 47 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261018.1e14517 latest | 2026-10-18 | 1e14517 | 1,419 B | B | view · diff |
| git:20260922.a2f84f5 | 2026-09-22 | a2f84f5 | 1,271 B | B | view · diff |
| git:20260501.d0c2526 | 2026-05-01 | d0c2526 | 1,079 B | B | view · diff |
| git:20260415.3c98ec5 | 2026-04-15 | 3c98ec5 | 807 B | A | view · diff |
| git:20260412.d32c8bc | 2026-04-12 | d32c8bc | 2,393 B | B | view |
Audit of the latest version
- fail: No curl or wget piped into a shell (matched: curl -fsSL https://raw.githubusercontent.com/filedcom/opentax/main/install.sh | sh)
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (1419 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 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
Starting a new one? Use a template for SKILL.md on mdpantry, which passes every one of these checks and says what to change in it.
Source
filedcom/opentax · 131 stars · license AGPL-3.0 · pushed 2026-10-31 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_arvwbpp7b7gijo2d GET https://markdownregistry.com/api/v1/resolve?ref=filedcom/opentax/opentax GET https://markdownregistry.com/api/v1/blob/51e06576adcfbbe627961c6aecd778b957fcbc5bfa8d4b48f8c483bbd827e01d
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.