turtlebot3-nav2-execution

turtlebot3-nav2-execution is an agent for coding agents from pome223/missionos. It costs 0 tokens per session (605 once invoked), scanned A, original, Apache-2.0.

An execution module for sending approved navigation goals to a TurtleBot3 through ROS2/Nav2. ROS2 is a robot software framework, and Nav2 is its navigation system.

In plain words
What is it for?
Use it to dispatch a Nav2 goal, request an authorized cancellation, and project bridge, odometry, obstacle, and sidecar observations.
Why use it?
It limits execution to already approved, concrete goals and reports bridge observations without guessing that a robot has moved, stopped, or finished.

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/pome223/missionos/turtlebot3-nav2-execution
Clone the repo
git clone --depth 1 https://github.com/pome223/missionos

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 turtlebot3-nav2-execution

README.md
[![agentmods](https://agentmods.dev/badge/agents/pome223/missionos/turtlebot3-nav2-execution.svg)](https://agentmods.dev/agents/pome223/missionos/turtlebot3-nav2-execution)
Your own site
<a href="https://agentmods.dev/agents/pome223/missionos/turtlebot3-nav2-execution"><img src="https://agentmods.dev/badge/agents/pome223/missionos/turtlebot3-nav2-execution.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 605 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 $0.00605
Opus 5 $0.00000 $0.00302
Sonnet 5 $0.00000 $0.00121
Haiku 4.5 $0.00000 $0.00060

Measured 5d ago against content hash 52f289022ed1, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

turtlebot3-nav2-execution 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 5d 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.

docs/agents/turtlebot3-nav2-execution.md · 76 lines

How it starts

The opening of the file, as written. The whole thing — 76 lines — stays where its author put it; the contents beside it link to each section on GitHub.

TurtleBot3 Nav2 Execution Boundary

src/runtime/turtlebot3_nav2_execution.py owns the bounded executor-facing portion of the TurtleBot3 workflow. It is downstream of proposal, compilation, rules validation, and human approval.

The module may:

  • bind an already concrete Nav2GoalPose to an existing approval reference
  • send that goal through the opt-in ROS2/Nav2 bridge
  • send a harness-authorized cancel_goal request
  • project bridge state, odometry, obstacle, and sidecar observations
  • return blocked adapter evidence when the bridge receipt is unavailable

It must not:

  • generate or select a Recovery proposal
  • mint, refresh, or broaden approval
  • change the compiled goal
  • infer motion from an ACK
  • infer a stop from a cancel ACK
  • infer completion from motion or status text alone
  • decide that the remaining route may resume
  • claim payload delivery or physical execution

Inputs

dispatch_nav2_goal receives individual authority and execution fields rather than the full mission proposal:

  • stable proposal identifier
  • approval actor and approval artifact reference
  • concrete Nav2 goal
  • dispatch timestamp and bounded action suffix
  • optional raw-log reference
  • initial-pose and simulator-fault controls

This keeps the executor from interpreting a larger proposal artifact or creating authority from it. The mission coordinator remains responsible for validating the proposal/approval/checkpoint chain before calling this boundary.

Observation semantics

The bridge receipt keeps these facts separate:

  • dispatch_request_sent: the executor request crossed the bridge boundary
  • ACK fields: Nav2 accepted or rejected a request
  • robot_motion_observed: source-backed odometry changed
  • obstacle fields: the bridge or its state/progress result reported the fact
  • completion_claimed: the hardware adapter's Nav2-success plus motion contract

When the telemetry sidecar is configured, its time-window correlation is projected separately. An unreadable or mismatched sidecar blocks the correlated motion claim; it does not fall back to an unverified success.

Read the full file on GitHub · 76 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. 5d ago First seen · 76 lines · 0 tokens per session scan A 52f289022ed1

Subscribe to this mod's changes

turtlebot3-nav2-execution is an agent published in the GitHub repository pome223/missionos (2 stars, last pushed today), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 605 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 2026-08-31.

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