reddit-post-synthesizer

reddit-post-synthesizer is an agent for Claude Code from agamjn/rising. It costs 50 tokens per session (1,034 once invoked), scanned A, original, MIT.

An agent that combines daily research about Reddit communities with a user’s goals, writing style, past post results, and community rules to draft three post ideas.

In plain words
What is it for?
Use it at the final stage of a daily Reddit research workflow to choose post types and write conversational, soft-promotion, or promotional proposals.
Why use it?
It reduces the work of turning scattered subreddit research into posts suited to specific audiences and posting guidelines.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the rising plugin — 1 skill, 5 commands, 5 agents shipped together

Good fit Use it at the final stage of a daily Reddit research workflow to choose post types and write conversational, soft-promotion, or promotional proposals.

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Install with agentmods
npx agentmods add agents/agamjn/rising/reddit-post-synthesizer
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.

Clone the repo
git clone --depth 1 https://github.com/agamjn/rising

Made for: Claude Code.

Or install rising, the plugin that ships this one along with the rest of its 1 skill, 5 commands, 5 agents.

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 reddit-post-synthesizer

README.md
[![agentmods](https://agentmods.dev/badge/agents/agamjn/rising/reddit-post-synthesizer.svg)](https://agentmods.dev/agents/agamjn/rising/reddit-post-synthesizer)
Your own site
<a href="https://agentmods.dev/agents/agamjn/rising/reddit-post-synthesizer"><img src="https://agentmods.dev/badge/agents/agamjn/rising/reddit-post-synthesizer.svg" alt="Measured on agentmods" height="20"></a>
Per session 50 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,034 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 $0.00050 $0.01034
Opus 5 $0.00025 $0.00517
Sonnet 5 $0.00010 $0.00207
Haiku 4.5 $0.00005 $0.00103

Measured 8d ago against content hash 15cc4e51faf9, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

reddit-post-synthesizer 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 8d 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.

agents/reddit-post-synthesizer.md · 81 lines

How it starts

The opening of the file, as written. The whole thing — 81 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Post Synthesizer

You produce the user's daily 3 post proposals. Quality bar: each proposal should look like something the user would actually want to post, not generic AI marketing slop.

Inputs

The /reddit-daily orchestrator passes you:

  • trend_briefs: array of trend briefs (output of subreddit-researcher agents), one per subreddit
  • output_path: where to write the drafts file (e.g., drafts/2026-05-09.md)

You also read directly from CWD:

  • product.md
  • goal.md
  • writing-style.md
  • post-categories.md ← critical: tells you what's worked
  • subreddits.md ← which subs are posting vs non-posting
  • subreddits/<sub>/rules.md ← per-target-sub rules (only for posting subs)

Procedure

  1. Read all inputs. If post-categories.md is missing, treat all categories as equal weight and note the limitation in the draft file's preamble.
  2. Pick distribution across categories for the 3 proposals: aim for one conversational, one soft-promo, one promotional by default — but shift toward whatever the performance data says is working. If conversational has 10x the avg upvotes of promotional for this user, pitch 2 conversational + 1 soft-promo. Skip promotional if it has consistently underperformed and there's no strong product hook this week.
  3. For each proposal:
    • Pick a target posting sub (or a small set of cross-postable subs) from the trend briefs of posting subs only — never propose posting to a non-posting sub
    • Anchor the post in something concrete from that sub's trend brief (a theme, a pain point, a question pattern). The reasoning section MUST cite the specific brief observation it's responding to.
    • Write the title and body in the user's voice per writing-style.md. Use their vocabulary, sentence rhythm, formatting habits. Avoid words/phrases their style guide flags.
    • Cross-check against subreddits/<target-sub>/rules.md — if anything in the post would violate a rule, rewrite or pick a different sub.
    • For promotional/soft-promo: the product mention must feel earned. The synthesizer rule of thumb: would this post still be worth reading if the product mention were removed? If no, rework it.
  4. Write the output file.

Read the full file on GitHub · 81 lines

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. 8d ago First seen · 81 lines · 50 tokens per session scan A 15cc4e51faf9

Subscribe to this mod's changes

reddit-post-synthesizer is an agent published in the GitHub repository agamjn/rising (17 stars, last pushed 3mo ago), licensed MIT. It adds 50 tokens to every session and 1,034 once invoked, about $0.0003 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.