verifiable-claim-seed: Instructions file for Claude Code

CLAUDE.md

verifiable-claim-seed CLAUDE.md is an instructions file for Claude Code from elwsls/verifiable-claim-seed. It costs 1,173 tokens per session, scanned A, original, MIT.

A set of Claude Code instructions for a project that checks whether claims are supported by verifiable evidence. It defines the project’s file structure, commands, and validation rules.

In plain words
What is it for?
Use it when changing or validating the verifiable-claim-seed project, including its JSON claim files, schemas, tests, and MCP simulation.
Why use it?
It gives the coding agent clear rules for checking claims instead of treating repeatable results as proof that something is correct.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: mentions CLAUDE.md.

This is elwsls/verifiable-claim-seed's own configuration. It tells Claude Code how to work on verifiable-claim-seed itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything verifiable-claim-seed configures →

Reuse

Borrowing it

Nothing to install: this file belongs to elwsls/verifiable-claim-seed. 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/elwsls/verifiable-claim-seed/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/elwsls/verifiable-claim-seed

Made for: Claude Code.

Wrote this? Show the measurements

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README.md
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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.

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Per session 1,173 This file is loaded in full into every session.
When invoked 1,173 The same file — it is already loaded in full.
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 $0.01173 $0.01173
Opus 5 $0.00587 $0.00587
Sonnet 5 $0.00235 $0.00235
Haiku 4.5 $0.00117 $0.00117

Measured 9d ago against content hash 56736ebb0a5a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

verifiable-claim-seed CLAUDE.md 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 9d 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.md · 42 lines

How it starts

The opening of the file, as written. The whole thing — 42 lines — stays where its author put it; the contents beside it link to each section on GitHub.

verifiable-claim-seed — CLAUDE.md

Machine-checkable claim contract + zero-dependency gate + real samples. 核心命题:可复现≠可验证 (reproducible≠verifiable) —— repro+frozen/snapshot 只证内部一致性;外部正确性由 anchor 承担。PASS 永远带着影子出厂:doubt 表面 + stage 方向相位。

Agent-first entry

  1. 先读 ai-catalog.json(机器可读清单,含全部概念与入口)→ 再读本文件 → llms.txt 补充。
  2. python3 verifiable_claim_seed/verify_claim.py self-test 确认门禁自检全绿(当前 49 例),再动任何东西。

Commands

python3 verifiable_claim_seed/verify_claim.py self-test    # gate 自检(49 cases,须全绿才动手)
python3 verifiable_claim_seed/verify_claim.py verify <claim.json> [--report out.json]
python3 verifiable_claim_seed/mcp_agent_sim.py            # 模拟陌生 agent 走 MCP 全链路(8 cases)
verify-claim self-test                                     # pip install verifiable-claim-seed 后

退出码:0 全过 / 1 硬失败(结构/格式/声明引用的文件缺失) / 2 用法·环境 / 3 证据契约违规(哈希失配/复现不符/引用句不在快照)。

Architecture(字段即契约,无散文歧义)

  • verifiable_claim_seed/schema/verifiable-claim-v1.schema.json — 声明契约规格(JSON Schema 2020-12,additionalProperties:false,tier 规则在 allOf)。
  • verifiable_claim_seed/verify_claim.py实际校验器(纯 stdlib,不依赖 jsonschema)。schema 与 gate 是平行实现;self-test 的「schema-gate 契约同步」例机器核验两者不漂移(字段/枚举/required 列表/嵌套白名单)。
  • 三份真实声明:verifiable_claim_seed/claims/VC-20260815-001.json(ISS 轨道高度,derived + frozen + repro)· VC-20260823-001/002(1 万步,primary + text-quote 锚 + 源快照)。
  • MCP server:verifiable_claim_seed/mcp_server.py(stdio,零依赖;tools:self_test / validate / verify-with-allow_execution)。
  • MCP 模拟 agent:verifiable_claim_seed/mcp_agent_sim.py——以 subprocess 走完整 MCP 链路,验证陌生 agent 发现→决策→调用零人工可用(8 cases)。

硬规则(每次改动)

  1. self-test 须先绿再改,改后必绿:任何新行为必须加自检用例。
  2. schema-gate 同步守卫:改 schema 的字段/枚举/required 必须镜像到 verify_claim.py 常量(SCHEMA_FIELDS / *_FIELDS / *_REQUIRED / TEXT_QUOTE_REQUIRED),否则自检的漂移守卫失败。
  3. 每改必 commit;删除用 trash,禁 rm

设计边界(动手前必读,都是故意的)

  • 无沙箱verify 以 subprocess 真实执行 repro.script(120s 超时)——只验证你信任的声明;验证来源不受信的声明等于在本机执行其任意代码。
  • 路径语义:声明内 data//scripts/ 路径相对包根解析,非相对声明 JSON。拷单文件声明到别处即断。
  • repro.script 必须为 Python(sys.executable 执行);shell/其他语言会被当失败脚本误报。
  • 设计边界:门禁验"脚本按其声明输出",不验"脚本计算正确"——伪造脚本打印正确哈希+期望数值即可过 rc0。完整性来自冻结输入字节与声明自洽,非数学。
  • text-quote 锚带字节快照quote + locator + snapshot + snapshot_sha256;gate 核快照哈希 + 引用句须真实存在于快照文本(排版/空白归一化比对)。机器核的是"引用句在这份快照里";快照是否确为现实源头仍须人工/AI 核
  • PASS 带影子:空 doubt 表面 = peak 峰值信号,无影子的 PASS 最该被盯。
  • 零依赖承诺:gate 只用 Python stdlib;引入依赖即破坏核心卖点。

Read the full file on GitHub · 42 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. 9d ago First seen · 42 lines · 1,173 tokens per session scan A 56736ebb0a5a

Subscribe to this mod's changes

verifiable-claim-seed CLAUDE.md is an instructions file published in the GitHub repository elwsls/verifiable-claim-seed (0 stars, last pushed 17d ago), licensed MIT. It adds 1,173 tokens to every session, about $0.0059 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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