agentic-memory-session-historian

agentic-memory-session-historian is an agent for coding agents from DolphinAI2026/dolphin-code. It costs 90 tokens per session (1,555 once invoked), scanned A, original, GPL-3.0.

An agent that reviews earlier coding-agent sessions about the same problem or topic and summarizes their findings.

In plain words
What is it for?
Use it when you need historical context about a bug, technical problem, or previous coding-agent investigation.
Why use it?
It helps recover past investigation results, decisions, and failed approaches without rereading every earlier session.

Agent

Part of the agentic-memory plugin — 1 skill, 48 agents shipped together

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 agents/dolphinai2026/dolphin-code/agentic-memory-session-historian
Clone the repo
git clone --depth 1 https://github.com/DolphinAI2026/dolphin-code

Or install agentic-memory, the plugin that ships this one along with the rest of its 1 skill, 48 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 agentic-memory-session-historian

README.md
[![agentmods](https://agentmods.dev/badge/agents/dolphinai2026/dolphin-code/agentic-memory-session-historian.svg)](https://agentmods.dev/agents/dolphinai2026/dolphin-code/agentic-memory-session-historian)
Your own site
<a href="https://agentmods.dev/agents/dolphinai2026/dolphin-code/agentic-memory-session-historian"><img src="https://agentmods.dev/badge/agents/dolphinai2026/dolphin-code/agentic-memory-session-historian.svg" alt="Measured on agentmods" height="20"></a>
Per session 90 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,555 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown 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 $0.00090 $0.01555
Opus 5 $0.00045 $0.00777
Sonnet 5 $0.00018 $0.00311
Haiku 4.5 $0.00009 $0.00155

Measured 3d ago against content hash 029862c8b363, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

agentic-memory-session-historian 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 3d 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.

agentic-coding/agents/agentic-memory-session-historian.agent.md · 90 lines

The source is not reproduced here

Licensed GPL-3.0

The repository is licensed GPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

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. 3d ago First seen · 90 lines · 90 tokens per session scan A 029862c8b363

Subscribe to this mod's changes

agentic-memory-session-historian is an agent published in the GitHub repository DolphinAI2026/dolphin-code (977 stars, last pushed 1mo ago), licensed GPL-3.0. It adds 90 tokens to every session and 1,555 once invoked, about $0.0005 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.