aba-precision-protocol

aba-precision-protocol is a skill for Claude Code, Codex from dcostenco/prism-coder. It costs 48 tokens per session (1,399 once invoked), scanned A, original, Apache-2.0.

A set of rules for making an AI agent work toward specific, observable results one careful step at a time. It uses measurable goals and requires mistakes to be corrected and checked before continuing.

In plain words
What is it for?
Defining testable task outcomes, checking that instructions are understood consistently, and applying a stop-fix-verify workflow.
Why use it?
It reduces vague instructions, unnoticed errors, and inconsistent behavior caused by moving on before each step is correct.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/dcostenco/prism-coder/aba-precision-protocol
Any agent
npx skills add dcostenco/prism-coder --skill aba-precision-protocol
Clone the repo
git clone --depth 1 https://github.com/dcostenco/prism-coder

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for aba-precision-protocol

README.md
[![agentmods](https://agentmods.dev/badge/skills/dcostenco/prism-coder/aba-precision-protocol.svg)](https://agentmods.dev/skills/dcostenco/prism-coder/aba-precision-protocol)
Your own site
<a href="https://agentmods.dev/skills/dcostenco/prism-coder/aba-precision-protocol"><img src="https://agentmods.dev/badge/skills/dcostenco/prism-coder/aba-precision-protocol.svg" alt="Measured on agentmods" height="20"></a>
Per session 48 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,399 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00048 $0.01399
Opus 5 $0.00024 $0.00700
Sonnet 5 $0.00010 $0.00280
Haiku 4.5 $0.00005 $0.00140

Measured 4d ago against content hash b32397840e20, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

aba-precision-protocol scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 4d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

examples/skills/aba-precision-protocol/SKILL.md · 158 lines

How it starts

The opening of the file, as written. The whole thing — 158 lines — stays where its author put it; the contents beside it link to each section on GitHub.

ABA Precision Execution Protocol

This is the foundation of agent behavior. Every prompt processed must follow these rules.

Rule 1: Observable, Measurable Goals

Before starting ANY task:

  1. Identify the specific goal — it must be observable, not vague
  2. Look at the goal 2-3 times to confirm you understand it the same way each time
  3. Inter-observer agreement must be ≥80% — if you described the goal to 5 people, at least 4 should describe the same outcome
  4. If the goal is ambiguous, clarify BEFORE starting work

Anti-Pattern

Goal: "Fix the bug"                    ← NOT observable
Goal: "Make it work better"            ← NOT measurable

Correct Pattern

Goal: "The AI should respond 'Yes, I have git_tool' 
       when asked 'do you have GitHub access?'"   ← Observable, testable
Goal: "prism load output should NOT contain 
       '⚠️ SPLIT-BRAIN' when Supabase is primary" ← Observable, testable

Rule 2: Teach Slow and Precise

Execute each step exactly as the final result should look. Not approximately. Not "close enough." Exactly.

  1. Do one step at a time
  2. Each step must be exactly right before moving to the next
  3. If you see a mistake — STOP immediately
  4. Fix the mistake FIRST
  5. Verify the fix is correct
  6. ONLY THEN move forward
  7. Never batch multiple changes hoping they'll all work

The Chain

Step → Verify → Pass? → Next Step
                  ↓
                Fail? → STOP → Fix → Verify → Pass? → Next Step

Command & Script Verification (merged from command_verification)

Every state-changing command MUST be independently verified:

# BAD: trust the command output
git push origin main

# GOOD: verify against observable state
git push origin main && \
  git ls-remote origin main | grep -q "$(git rev-parse HEAD)" && \
  echo "VERIFIED" || echo "FAILED — STOP"

Hung Command Rules:

  • If a command doesn't complete within timeout, do NOT retry blindly
  • If 2 consecutive terminal commands are cancelled → STOP using terminal → switch to file editing tools
  • Never chain destructive commands with && if any could hang
  • If terminal is hung: write a deploy script to disk using file tools, give user copy-paste commands

Read the full file on GitHub · 158 lines

Files

What ships with it

3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 4d ago First seen · 158 lines · 48 tokens per session scan A b32397840e20

Subscribe to this mod's changes

aba-precision-protocol is a skill published in the GitHub repository dcostenco/prism-coder (157 stars, last pushed 7d ago), licensed Apache-2.0. It adds 48 tokens to every session and 1,399 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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