abductive-engineering SKILL.md skillA
This file is byte-identical to the first copy the registry indexed. Same content hash, so the same checks give both the same grade.
abductive-engineering 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/abductive-engineering@git:20260708.f31c428Pins git:20260708.f31c428 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- annatchijova/skills
- Path
abductive-engineering/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260708.f31c428, committed Jul 8, 2026
- Size
- 12,932 bytes
- Repository stars
- 9
- License
- a license file GitHub does not identify
Software engineering best practices grounded in C.S. Peirce's abductive reasoning and his triadic framework (abduction–deduction–induction, sign–object–interpretant, Firstness–Secondness–Thirdness). Use this skill whenever the user is debugging a defect, investigating an incident or outage, doing root cause analysis, reviewing code, writing a postmortem, naming things (variables, APIs, services), making architectural or design decisions under uncertainty, or asks for a…
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
# Abductive Engineering A methodology for software engineering that applies Charles Sanders Peirce's logic of inquiry. Peirce identified three irreducible modes of inference and argued that all genuine inquiry cycles through them. Software work — especially debugging, design, and review — is inquiry, so the cycle applies directly. The two core tools of this skill: 1. **The inference triad** (abduction → deduction → induction) — the engine of debugging, incident response, and design. 2. **The semiotic triad** (sign → object → interpretant) — the lens for naming, APIs, code review, and documentation. A supporting lens, Peirce's **three categories** (Firstness, Secondness, Thirdness), is explained in `references/peirce-foundations.md`. Read that file when the user wants theoretical depth, asks "why does this work", or requests teaching material about the framework itself. For everyday application, this file is sufficient. --- ## Part 1: The Inference Triad — Debugging and Investigation Peirce's canonical form of abduction: > The surprising fact, C, is observed. > But if A were true, C would be a matter of course. > Hence, there is reason to suspect that A is true. …
Read the whole file at its exact version.
How to install
mdr add annatchijova/skills/abductive-engineering@sha256:ed8dce445420a1d9The line at the top of this page pins the label git:20260708.f31c428, 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_erdsri35u4zsthsa)
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Versions
The registry has recorded 1 version of this file, committed on Jul 8, 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 (12932 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_erdsri35u4zsthsa GET https://markdownregistry.com/api/v1/resolve?ref=annatchijova/skills/abductive-engineering GET https://markdownregistry.com/api/v1/blob/ed8dce445420a1d92dfde62e01be3fa2897a659a267311334e922ba45c60430c
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