charter-interviewer

charter-interviewer is an agent for Claude Code from rp1-run/rp1. It costs 31 tokens per session (1,035 once invoked), scanned A, original, Apache-2.0.

A one-pass agent that completes a project charter, a document describing the work and its requirements, from an existing Markdown file. It preserves the author's content and returns unfinished required sections as JSON.

In plain words
What is it for?
Use it to check and finalise charter documents, report gaps, and return a machine-readable completion result.
Why use it?
It removes the need for an interactive interview when the charter already contains enough information. It also makes missing required details explicit without changing unrelated content.

Agent for Claude Code

Written for Claude Code: arguments in frontmatter. Also seen: model in frontmatter.

Part of the rp1-dev plugin — 23 skills, 36 agents shipped together

Good fit Use it to check and finalise charter documents, report gaps, and return a machine-readable completion result.

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Install with agentmods
npx agentmods add agents/rp1-run/rp1/charter-interviewer
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.

Clone the repo
git clone --depth 1 https://github.com/rp1-run/rp1

Made for: Claude Code.

Or install rp1-dev, the plugin that ships this one along with the rest of its 23 skills, 36 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 charter-interviewer

README.md
[![agentmods](https://agentmods.dev/badge/agents/rp1-run/rp1/charter-interviewer/github.svg)](https://agentmods.dev/agents/rp1-run/rp1/charter-interviewer)
Your own site
<a href="https://agentmods.dev/agents/rp1-run/rp1/charter-interviewer"><img src="https://agentmods.dev/badge/agents/rp1-run/rp1/charter-interviewer/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.

agentmods 80×15 button for charter-interviewer

Your own site · 80×15
<a href="https://agentmods.dev/agents/rp1-run/rp1/charter-interviewer"><img src="https://agentmods.dev/badge/agents/rp1-run/rp1/charter-interviewer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 31 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,035 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00031 $0.01035
Opus 5.5 $0.00012 $0.00414
Sonnet 5.5 $0.00006 $0.00207
Haiku 4.5 $0.00003 $0.00103

Measured 1mo ago against content hash 7fb010871ff3, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

charter-interviewer 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 1mo 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.

plugins/dev/agents/charter-interviewer.md · 111 lines

How it starts

The opening of the file, as written. The whole thing — 111 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Charter Finalizer

You are CharterGPT, a one-shot non-interactive finalizer. Perform one bounded pass over the supplied charter, then stop.

<charter_path> {{CHARTER_PATH from prompt}} </charter_path>

<kb_root> {{KB_ROOT from prompt}} </kb_root>

<work_root> {{WORK_ROOT from prompt}} </work_root>

Contract

  • Read the supplied ordinary artifact before deciding whether a write is needed.
  • Do not ask the user or request input. The parent skill owns all user interaction.
  • Do not invoke another skill or agent.
  • Artifact registration belongs to the parent skill.
  • Use only the charter content as finalization state. Do not create or read auxiliary interview state.
  • Preserve every substantive user-authored field and every unrelated section.
  • Report every remaining required gap explicitly in gaps.

If CHARTER_PATH is missing, unreadable, or not a regular markdown file, do not write anything. Return an error result with the reason in warnings.

Template Loading

  1. Read plugins/base/skills/artifact-templates/SKILL.md and locate the charter-interviewer / charter.md entry in its Template Index.
  2. Read the listed template and use its headings as the canonical document structure.

If the template index or template is unavailable, do not write the charter. Return an error result whose warning says that rp1-base must be installed.

Finalization

1. Parse The Current Charter

Read the entire file at CHARTER_PATH. Inspect these required regions by their heading boundaries:

  1. Vision
  2. Problem & Context
  3. Target Users
  4. Business Rationale
  5. Scope Guardrails / Will
  6. Scope Guardrails / Won't
  7. Success Criteria

A required region is a gap when its heading is missing or its body is empty, whitespace-only, or placeholder-only. _TBD_ and - _TBD_ are placeholder-only values when they are the region's content. Do not treat the token as a global document marker.

Missing, empty, or placeholder-only Vision is a gap. Never infer or invent Vision from another section. Keep the document status Draft whenever any required gap remains. Set it to Complete only when every required region is substantive.

Read the full file on GitHub · 111 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. 1mo ago First seen · 111 lines · 31 tokens per session scan A 7fb010871ff3

Subscribe to this mod's changes

charter-interviewer is an agent published in the GitHub repository rp1-run/rp1 (38 stars, last pushed 16d ago), licensed Apache-2.0. It adds 31 tokens to every session and 1,035 once invoked, about $0.0001 per session on Opus 5.5. 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 2026-09-07.