C-plan

C-plan is an agent for coding agents from lukacf/meerkat. It costs 0 tokens per session (827 once invoked), scanned A, original, Apache-2.0.

A work plan for the C lane of Meerkat, a Rust-based system for running AI agents. It focuses on how incoming communications are accepted, acknowledged, or rolled back inside the runtime.

In plain words
What is it for?
It helps developers update communication tasks, inbox handling, runtime draining, regression tests, and scans for unsafe ingress and rollback behavior.
Why use it?
It reduces the risk of publishing trust or sending acknowledgements before an incoming request is fully admitted and authorized.

Agent

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/lukacf/meerkat/c-plan
Clone the repo
git clone --depth 1 https://github.com/lukacf/meerkat

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 C-plan

README.md
[![agentmods](https://agentmods.dev/badge/agents/lukacf/meerkat/c-plan.svg)](https://agentmods.dev/agents/lukacf/meerkat/c-plan)
Your own site
<a href="https://agentmods.dev/agents/lukacf/meerkat/c-plan"><img src="https://agentmods.dev/badge/agents/lukacf/meerkat/c-plan.svg" alt="Measured on agentmods" 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 827 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 $0.00000 $0.00827
Opus 5 $0.00000 $0.00413
Sonnet 5 $0.00000 $0.00165
Haiku 4.5 $0.00000 $0.00083

Measured 3d ago against content hash 1a7233f97315, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

C-plan 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.

.rct-0.5-archive/round5/agents/C-plan.md · 90 lines

How it starts

The opening of the file, as written. The whole thing — 90 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Lane C Plan

Owned Rows

  • DOGMA-12
  • DOGMA-19

Owned Milestones

  • C1 = DOGMA-12, DOGMA-19

Owned Files

  • meerkat-comms/src/io_task.rs
  • meerkat-comms/src/inbox.rs
  • meerkat-runtime/src/comms_drain.rs
  • adjacent commit-point helpers if needed:
    • meerkat-runtime/src/meerkat_machine/comms_drain.rs

Shared Files Touched Under Round Map

  • none outside the lane-owned trust seam

Blocked By

  • none

Unblocks

  • none hard-blocked, but reduces trust/regression risk for the round

Public / Type / Schema Changes

  • no public rename surface
  • internal ingress/rollback semantics only
  • no schema or SDK regen expected

Defensive Scan Commitments

  • add or update a scan banning:
    • trust publication before DSL bind/authorize commit
    • ack-before-final-admission behavior
    • dual ownership of ingress trust decisions
  • fulfilled in lane-owned regression tests inside:
    • meerkat-comms/src/io_task.rs
    • meerkat-comms/src/inbox.rs
    • meerkat-runtime/src/comms_drain.rs

Requested Orchestrator Probes

  • ./scripts/repo-cargo check -p meerkat-comms
  • ./scripts/repo-cargo check -p meerkat-runtime

Requested Build Gate Commands

  • Quick probe:
    • ./scripts/repo-cargo check -p meerkat-comms
    • ./scripts/repo-cargo check -p meerkat-runtime
  • Full gate:
    • ./scripts/repo-cargo nextest run -p meerkat-comms --lib --show-progress none --status-level none --final-status-level fail
    • ./scripts/repo-cargo nextest run -p meerkat-runtime --lib --show-progress none --status-level none --final-status-level fail
    • ./scripts/repo-cargo e2e-fast

Risks

  • row 12 and 19 are one semantic seam and must stay commit-first, trust-second
  • handler rollback paths are easy to leave half-correct without explicit tests

Open Decisions

  • none

Handoff Notes

  • handoff commit: none
  • changed files:
    • meerkat-comms/src/io_task.rs
    • meerkat-comms/src/inbox.rs
    • meerkat-runtime/src/comms_drain.rs
    • .rct/round5/agents/C-checklist.md
    • .rct/round5/agents/C-plan.md
  • generated output request: none
  • known risks:
    • cargo checks/tests not run in-lane per instruction; orchestrator should run the requested probes before merge
    • defensive scan is implemented as owned regression tests rather than a new top-level script to stay within lane-owned file scope
    • INT quick probe found and this lane fixed one compile issue: SupervisorBindingStageError import had been test-gated while rollback helpers use it in production code; re-probe requested
    • full gate found and this lane fixed one test compile issue: meerkat-comms/src/io_task.rs test module needed InboxItem imported back into scope; re-probe/full-gate rerun requested
    • full gate then found two stale io_task test expectations that still assumed untrusted ingress returned Ok(()); this lane updated them to assert Err(IoTaskError::IngressDropped(DropReason::UntrustedSender))
    • full gate then found one borrow/move issue in the new rollback coverage: bind_member_rolls_back_binding_when_trust_publication_fails now clones the sender peer id before moving payload into BridgeCommand::BindMember

Read the full file on GitHub · 90 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. 3d ago First seen · 90 lines · 0 tokens per session scan A 1a7233f97315

Subscribe to this mod's changes

C-plan is an agent published in the GitHub repository lukacf/meerkat (20 stars, last pushed 3d ago), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 827 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 2026-08-30.

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