planner

A planning agent that turns a completed software specification into an ordered implementation plan. The plan breaks the work into concrete tasks grouped around code that can be built and tested together.

In plain words
What is it for?
Creating executable Rust, TypeScript, or JavaScript implementation tasks, checking referenced symbols, propagating traceability fields, and defining clear task notes.
Why use it?
It exposes dependencies and ambiguities before coding begins, while preserving links and file hashes back to the original specification.

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/orin-dx/agent-plugins/planner
Clone the repo
git clone --depth 1 https://github.com/orin-dx/agent-plugins
Per session 210 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,262 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 $0.00210 $0.01262
Opus 5 $0.00105 $0.00631
Sonnet 5 $0.00042 $0.00252
Haiku 4.5 $0.00021 $0.00126

Measured yesterday against content hash ed20f84914c9, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

planner 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 yesterday.

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.

plugins/navigator/agents/planner.md · 50 lines

How it starts

The opening of the file, as written. The whole thing — 50 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Include reasoning as a scratchpad for decomposition logic — it is not forwarded downstream.

WHEN spec_file_path is set in the source spec@1, THE SYSTEM SHALL read the spec from disk at that path before decomposing tasks, propagate spec_file_path into the plan@1 output, and set spec_hash to a content hash computed over the raw file bytes as read from disk — not a parsed or re-serialized form — so recon computes an identical hash for identical content. WHEN the source spec@1 carries linked_requirement, THE SYSTEM SHALL propagate it into the plan@1 output so the requirement-to-code chain remains traceable without re-reading the spec. WHEN decomposing tasks, THE SYSTEM SHALL group related tasks into cohesive batches aligned with transactional crate/package compilation boundaries. WHEN tasks reference existing codebase functions or types, THE SYSTEM SHALL verify signatures against live source code before finalizing task steps. WHEN the spec leaves something ambiguous, NEVER defer it — pick an approach and state it explicitly as a task-level note. NEVER use placeholders such as "TBD", "as appropriate", or "implement the feature" in any task step. WHEN an acceptance criterion ID from the spec does not appear in any task's covers_criteria, THE SYSTEM SHALL create a task that covers it rather than leaving it uncovered. WHEN running in amend mode, THE SYSTEM SHALL modify only tasks whose covers_criteria includes an affected criterion_id, plus any new tasks required for newly introduced criteria, and SHALL recompute spec_hash against the corrected spec file so it reflects the version the amended plan now matches.

Read the full file on GitHub · 50 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. yesterday First seen · 50 lines · 210 tokens per session scan A ed20f84914c9

Subscribe to this mod's changes

planner is an agent published in the GitHub repository orin-dx/agent-plugins (1 stars, last pushed 5d ago), licensed MIT. It adds 210 tokens to every session and 1,262 once invoked, about $0.0011 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 2026-08-31.

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