ai-knowledge-filler 0.6.2

Schema validation pipeline for LLM-generated structured Markdown. CLI · Python API · REST API.

AI Knowledge Filler

Validation pipeline that prevents AI-generated files from reaching disk unless they pass schema checks

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The Problem

Every time you use an LLM to generate structured knowledge files, the output drifts — wrong enum values, missing fields, dates in the wrong format, tags as strings instead of arrays. The files look fine until something downstream breaks: a search query returning nothing, a CI check failing, a pipeline corrupting.

The standard fix is post-hoc validation — check after writing, fix manually. That doesn't scale past a few dozen files.

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How It Works

Prompt → LLM → Validation Engine → Error Normalizer → Retry Controller → Commit Gate → File

The LLM is the only non-deterministic component. Everything else is pure functions.

If output fails schema checks, it never touches disk — the Error Normalizer converts typed error codes into correction instructions and sends them back to the LLM for a retry.

If the same error fires twice on the same field, the pipeline aborts instead of looping — that pattern means your schema has a boundary problem, not the model.

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Quick Start

pip install ai-knowledge-filler

export ANTHROPIC_API_KEY="sk-ant-..."  # or GOOGLE_API_KEY, OPENAI_API_KEY, GROQ_API_KEY

akf generate "Write a guide on Docker networking"
akf validate ./vault/

Works with Claude, GPT-4, Gemini, Ollama.

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External Taxonomy Config

Your ontology lives in akf.yaml — not compiled into the tool:

# akf.yaml
schema_version: "1.0.0"
vault_path: "./vault"

enums:
  type: [concept, guide, reference, checklist, project, roadmap, template, audit]
  level: [beginner, intermediate, advanced]
  status: [draft, active, completed, archived]
  domain:
    - ai-system
    - api-design
    - devops
    - security
    - system-design

Change your taxonomy without touching code or redeploying:

akf init          # generates akf.yaml for your vault
akf validate ./   # validates all files against your config

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Error Codes

Validation failures produce typed error codes, not free-form messages:

Code	Field	Meaning
E001	type / level / status	Value not in allowed enum set
E002	any	Required field missing
E003	created / updated	Date not ISO 8601
E004	title / tags	Type mismatch (e.g. tags: "security" instead of tags: [security])
E005	frontmatter	General schema violation
E006	domain	Value not in taxonomy
E007	created / updated	created is later than updated

The Error Normalizer translates these codes into deterministic correction instructions for the retry:

E006 on field "domain" (received: "backend")
→ "The 'domain' field must be one of: [api-design, backend-engineering, devops, ...]
   You used 'backend' which is not in the taxonomy. Choose the closest match."

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Retry as Signal

Retry pressure is not a failure metric.

When a domain value triggers elevated retries, the taxonomy has a boundary problem — not the model. The telemetry substrate (append-only JSONL) surfaces which enum values cause friction, so you can refine your ontology based on evidence rather than intuition.

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Interfaces

CLI:

akf generate "Create a guide on API rate limiting"
akf generate "Create Docker security checklist" --model gemini
akf validate ./vault/
akf validate --file outputs/Guide.md
akf serve --port 8000        # REST API
akf serve --mcp              # MCP server (v0.6.x)

Python API:

from akf import Pipeline

pipeline = Pipeline(output="./vault/")
result = pipeline.generate("Create a guide on Docker networking")
results = pipeline.batch_generate(["Guide 1", "Guide 2", "Guide 3"])

REST API:

POST /v1/generate    →  validated file
POST /v1/validate    →  schema check result
POST /v1/batch       →  multiple files
GET  /v1/models      →  available providers

MCP (v0.6.x, in progress):

akf serve --mcp
# Exposes: akf_generate, akf_validate, akf_enrich, akf_batch

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What Every Committed File Guarantees

• Required fields present: title, type, domain, level, status, tags, created, updated
• Valid enums: type, level, status from controlled sets
• Domain from your configured taxonomy in akf.yaml
• ISO 8601 dates with created ≤ updated
• tags as array with ≥ 3 items, title as string — no type mismatches

No file reaches disk without passing all checks.

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Example Output

Input:

Create a guide on API rate limiting

Output (vault/API_Rate_Limiting_Strategy.md):

---
title: "API Rate Limiting Strategy"
type: guide
domain: api-design
level: intermediate
status: active
version: v1.0
tags: [api, rate-limiting, performance, architecture]
related:
  - "[[API Design Principles]]"
  - "[[System Scalability Patterns]]"
created: 2026-03-06
updated: 2026-03-06
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## Purpose
...

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Architecture

akf/
  pipeline.py          # Pipeline — generate(), validate(), batch_generate()
  validator.py         # Validation Engine — binary VALID/INVALID, E001–E007
  validation_error.py  # ValidationError dataclass
  error_normalizer.py  # Translates errors → LLM retry instructions
  retry_controller.py  # Convergence protection — aborts on identical error hash
  commit_gate.py       # Atomic write — only VALID files reach disk
  telemetry.py         # Append-only JSONL event stream
  config.py            # Loads akf.yaml or bundled defaults
  server.py            # FastAPI REST API
  mcp_server.py        # MCP server (FastMCP)
  defaults/
    akf.yaml           # Default taxonomy

cli.py                 # Entry point
llm_providers.py       # Claude / Gemini / GPT-4 / Ollama

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Model Support

Provider	Key	Notes
Claude	ANTHROPIC_API_KEY	Recommended for complex content
Gemini	GOOGLE_API_KEY	Fast, cost-effective
GPT-4	OPENAI_API_KEY	General purpose
Groq	GROQ_API_KEY	Free tier, fast
Ollama	—	Local, offline, private

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Tests

pytest --cov=akf --cov-report=term-missing -v

560+ tests, 91% coverage, CI green on Python 3.10 / 3.11 / 3.12.

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Installation

# PyPI
pip install ai-knowledge-filler

# With MCP support
pip install ai-knowledge-filler[mcp]

# From source
git clone https://github.com/petrnzrnk-creator/ai-knowledge-filler.git
cd ai-knowledge-filler
pip install -e .

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Documentation

• Architecture — module map, data flow, pipeline decisions
• CLI Reference — all commands, flags, exit codes
• User Guide — installation, configuration, troubleshooting
• Contributing — dev setup, quality gates, adding providers

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License

MIT — free for commercial and personal use.

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PyPI: https://pypi.org/project/ai-knowledge-filler
Version: 0.6.1