What is pre-compact-interceptor?

A safeguard that saves the current coding-session state before the conversation becomes too full and older details may be removed.

It captures session details, relationships, observations, and pending tasks when the context is nearing its limit or the user requests a checkpoint.

It reduces the risk of losing progress, decisions, and pending tasks during long conversations or automatic context cleanup.

How SuperPiTT/self-improving-memory-mcp configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to SuperPiTT/self-improving-memory-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/SuperPiTT/self-improving-memory-mcp/main/.claude/agents/pre-compact-interceptor.md

Clone the repo

git clone --depth 1 https://github.com/SuperPiTT/self-improving-memory-mcp

Made for: Claude Code.

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.

README.md

[![agentmods](https://agentmods.dev/badge/agents/superpitt/self-improving-memory-mcp/pre-compact-interceptor/github.svg)](https://agentmods.dev/agents/superpitt/self-improving-memory-mcp/pre-compact-interceptor)

Your own site

<a href="https://agentmods.dev/agents/superpitt/self-improving-memory-mcp/pre-compact-interceptor"><img src="https://agentmods.dev/badge/agents/superpitt/self-improving-memory-mcp/pre-compact-interceptor/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.

Your own site · 80×15

<a href="https://agentmods.dev/agents/superpitt/self-improving-memory-mcp/pre-compact-interceptor"><img src="https://agentmods.dev/badge/agents/superpitt/self-improving-memory-mcp/pre-compact-interceptor.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 2,396 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.

Model	Per session	Once invoked
Fable 5.1	$0.00000	$0.02396
Opus 5.5	$0.00000	$0.00958
Sonnet 5.5	$0.00000	$0.00479
Haiku 4.5	$0.00000	$0.00240

Measured 2mo ago against content hash 6dffa449f201, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

pre-compact-interceptor 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 2mo 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.

.claude/agents/pre-compact-interceptor.md · 391 lines

How it starts

The opening of the file, as written. The whole thing — 391 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Pre-Compact Interceptor Agent

Description

Detects when conversation context is approaching the limit (>80% full) and proactively saves complete session state BEFORE Claude's autocompact can discard information, then helps clear the context with a clean continuation summary.

When to use

Use this agent PROACTIVELY AND AUTOMATICALLY when:

Token usage exceeds 80% of context window
Conversation has 40+ message exchanges
User explicitly says "save state" or "checkpoint"
Before long/complex operations that will use many tokens
When approaching known context limits

CRITICAL: This agent PREVENTS data loss by intercepting BEFORE autocompact happens.

Tools available

mcp__memory__create_entities (auto-approved)
mcp__memory__create_relations (auto-approved)
mcp__memory__add_observations (auto-approved)
mcp__memory__search_nodes (auto-approved)
Read, Grep, Glob (to analyze current state)
TodoWrite (to capture pending tasks)

Instructions

You are the Pre-Compact Interceptor Agent. Your job is to save everything BEFORE context is lost and create a clean restart point.

Activation Trigger

AUTOMATIC TRIGGERS:

Token threshold reached
- Context usage > 160,000 tokens (80% of 200k)
- Check <budget:token_budget> in system messages
- Be proactive at 150k+ tokens
Message count threshold
- More than 40 message exchanges
- Long back-and-forth conversations
Manual trigger
- User says: "save state", "checkpoint", "preserve context"
- Before risky operations
Preemptive trigger
- About to start large task that will consume many tokens
- Before reading many large files

What to Capture

COMPLETE SESSION STATE:

Current Work Summary
- What is being worked on RIGHT NOW
- Original goal/request from user
- Current progress (percentage/milestone)
- What phase we're in
Completed Work
- All files created/modified (with paths)
- All decisions made
- All solutions implemented
- All tests run/passed

Read the full file on GitHub · 391 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.

2mo ago First seen · 391 lines · 0 tokens per session scan A 6dffa449f201

Subscribe to this mod's changes

pre-compact-interceptor is an agent published in the GitHub repository SuperPiTT/self-improving-memory-mcp (0 stars, last pushed 1y ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 2,396 tokens. 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 2026-09-01.

Memory and context

pre-compact-interceptor next to 6 agents from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
pre-compact-interceptorSuperPiTT/self-improving-memory-mcp	Agent	0	1y ago	MIT	A	0	Claude Code
context-finderfuturegerald/futuregerald-claude-plugin	Agent	7	2d ago	none	A	107	Claude Code
wiki-ingestkarlorz/llm-wiki	Agent	5	yesterday	none	A	64	Claude Code
memory-curatorwbind-core/termpipe-mcp	Agent	0	4d ago	none	A	45	Claude Code
data scientistkhalilbenaz/MDAN	Agent	0	23d ago	MIT	A	8	Claude Code
playwright-test-generatormicrosoft/playwright	Agent	99k	yesterday	Apache-2.0	A	151	Claude Code
.NET-Notebook-Migration-Agentmicrosoft/ai-agents-for-beginners	Agent	79k	4d ago	MIT	A	33	Claude Code

self-improving-memory-mcp: Agent for Claude Code