parallel-reconcile-merge

parallel-reconcile-merge is a skill for Claude Code, Codex from AnthonyAlcaraz/agentic-graph-rag-skills. It costs 213 tokens per session (2,009 once invoked), scanned A, original, MIT.

A controlled way to run independent branches of a tree-shaped process at the same time, then combine their results in one merge step. Each branch has isolated errors and writes only to its own result.

In plain words
What is it for?
Use it for independent data collection or processing branches, with either an all-branches-must-succeed policy or a quorum-based partial-coverage policy.
Why use it?
It prevents one failed branch from corrupting shared state or stopping unrelated work, while keeping the combined result predictable regardless of completion order.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it for independent data collection or processing branches, with either an all-branches-must-succeed policy or a quorum-based partial-coverage policy.

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Install with agentmods
npx agentmods add skills/anthonyalcaraz/agentic-graph-rag-skills/parallel-reconcile-merge
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.

Any agent
npx skills add AnthonyAlcaraz/agentic-graph-rag-skills --skill parallel-reconcile-merge
Clone the repo
git clone --depth 1 https://github.com/AnthonyAlcaraz/agentic-graph-rag-skills

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 parallel-reconcile-merge

README.md
[![agentmods](https://agentmods.dev/badge/skills/anthonyalcaraz/agentic-graph-rag-skills/parallel-reconcile-merge/github.svg)](https://agentmods.dev/skills/anthonyalcaraz/agentic-graph-rag-skills/parallel-reconcile-merge)
Your own site
<a href="https://agentmods.dev/skills/anthonyalcaraz/agentic-graph-rag-skills/parallel-reconcile-merge"><img src="https://agentmods.dev/badge/skills/anthonyalcaraz/agentic-graph-rag-skills/parallel-reconcile-merge/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for parallel-reconcile-merge

Your own site · 80×15
<a href="https://agentmods.dev/skills/anthonyalcaraz/agentic-graph-rag-skills/parallel-reconcile-merge"><img src="https://agentmods.dev/badge/skills/anthonyalcaraz/agentic-graph-rag-skills/parallel-reconcile-merge.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 213 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,009 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00213 $0.02009
Opus 5 $0.00106 $0.01005
Sonnet 5 $0.00043 $0.00402
Haiku 4.5 $0.00021 $0.00201

Measured 12d ago against content hash c56893d4e612, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

parallel-reconcile-merge 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 12d ago.

The scan reads SKILL.md. This mod also ships 2 executable files (cli.py, lib.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

skills/reasoning-planning/parallel-reconcile-merge/SKILL.md · 148 lines

How it starts

The opening of the file, as written. The whole thing — 148 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Parallel Reconcile-Merge

Overview

Parallelism itself is not the enemy — uncoordinated parallelism is. The chapter's safe pattern embeds a parallel window inside a sequential control flow: planning verifies the branches are truly independent, the branches run simultaneously reading different data sources and writing to separate channels, and only the merge node combines them.

This skill implements the execution + reconciliation half:

  • Per-branch error isolation (tree-pipeline error aggregation): each branch runs in isolation; an exception is caught and recorded in that branch's own result. "One branch's failure shouldn't cascade to others or corrupt shared state." Branches receive a copy of context and never write shared state — only the merge node combines them.
  • Reducer-style deterministic merge (Example 5-8): merge successful branch values with a reducer (add, extend, union, max, min) so the result is "deterministic merging regardless of execution order."
  • Completion policy: all_or_nothing (every branch must succeed) vs partial_coverage (a quorum suffices — "sometimes three successful branches out of four provide sufficient coverage").
  • Flag union: any red flag from any branch is surfaced; a failed sibling never silently drops another branch's flag.

In the DevOps latency investigation (account 123456789012), the planner spawns parallel hypothesis tests — database connection-pool metrics and payment-service memory profiles — reading different data sources. The pool branch raises a pool_exhausted flag; the memory branch comes back normal. Reconcile surfaces the flag, merges both findings, and (under all-or-nothing for a confirmation phase) reports completion only if both branches succeeded. The analogous claims case runs fraud / provider-credentials / medical-necessity branches the same way: any flag from any branch affects the final decision.

When to Use

  • A planning node has verified branch independence (different data sources, no shared decision, no shared mutable state)
  • Parallel hypothesis tests, multi-aspect verification (fraud / pricing / credentials), parallel research tracks
  • You need deterministic merge + a quorum/all-or-nothing completion policy + flag aggregation

Read the full file on GitHub · 148 lines

Files

What ships with it

2 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. 12d ago First seen · 148 lines · 213 tokens per session scan A c56893d4e612

Subscribe to this mod's changes

parallel-reconcile-merge is a skill published in the GitHub repository AnthonyAlcaraz/agentic-graph-rag-skills (10 stars, last pushed 2mo ago), licensed MIT. It adds 213 tokens to every session and 2,009 once invoked, about $0.0011 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 2026-08-31.

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