bsp-mcp-server: Instructions file for Claude Code

CLAUDE.md

bsp-mcp-server CLAUDE.md is an instructions file for Claude Code from pscale-commons/bsp-mcp-server. It costs 3,686 tokens per session, scanned A, original, MIT.

A set of project-specific instructions for working with the bsp-mcp-server and its block-based storage system. It defines how to write addresses and how this Claude Code session identifies itself when reading or writing blocks.

In plain words
What is it for?
Use it before editing the bsp-mcp-server project or accessing its blocks. It covers address notation, the meaning of the weft session, and rules for reading and writing the underlying data.
Why use it?
It prevents invalid address formats and clarifies which session is allowed to write particular data. These rules are important because the system rejects some address styles.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: reads .claude/ paths; mentions CLAUDE.md; mentions Claude Code.

This is pscale-commons/bsp-mcp-server's own configuration. It tells Claude Code how to work on bsp-mcp-server 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 bsp-mcp-server configures →

Reuse

Borrowing it

Nothing to install: this file belongs to pscale-commons/bsp-mcp-server. 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/pscale-commons/bsp-mcp-server/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/pscale-commons/bsp-mcp-server

Made for: Claude Code.

Wrote this? Show the measurements

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Per session 3,686 This file is loaded in full into every session.
When invoked 3,686 The same file — it is already loaded in full.
Security scan A 1 finding. 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 $0.03686 $0.03686
Opus 5.5 $0.01474 $0.01474
Sonnet 5.5 $0.00737 $0.00737
Haiku 4.5 $0.00369 $0.00369

Measured 8d ago against content hash 2b12f6d705b9, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

bsp-mcp-server CLAUDE.md scanned grade A with 1 finding 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 8d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

- A beach IS curl-able: `GET <origin>/.well-known/pscale-beach?block=<name>[&spindle=<addr>]`; `POST` with `{block, spindle, content, secret}`. A no-pscale GET returns the raw node. A subtree write REPLACES the node — ch
CLAUDE.md · 100 lines

How it starts

The opening of the file, as written. The whole thing — 100 lines — stays where its author put it; the contents beside it link to each section on GitHub.

bsp-mcp-server

ADDRESS NOTATION — NON-NEGOTIABLE, READ FIRST. Pscale addresses are numbers, not paths (sunstone:1.5). Write them ONE of two ways and no other:

  • Single decimal anchored at the floor: 4.26, 4.56, 9.3 — left-of-decimal padded to floor width. (block-conventions floor is 1, so 4.26 = branch 4 → 2 → 6.)
  • Comma-walk when emphasising the path of digits walked: 4,2,6.

NEVER write multi-dot (4.2.6, 1.3.2). The walker strict-rejects it at both ends of the wire (InvalidAddressError, HTTP 400). Common slips: 4.2.6→4.26, 1.6.4→1.64. If you reach for a second dot, switch to commas. Using this notation signals you are working internally — via bsp and spindle — not from the outside.

What this is

A pscale block is JSON in which the nesting level IS the data: depth is scale, position is relationship, the underscore chain is the semantic spine and the digits 1-9 its branches — nothing else, no type, no parent, no _word keys. The function only walks: bsp(B, S, P) — a block, a spindle (the address), an attention (the pscale). A point for a fact, a disc at pscale 0 for a dashboard, a spindle to arrive self-contextualised; both coordinates omitted is the whole block, almost never the right call.

Blocks live at beaches — any origin serving /.well-known/pscale-beach — read by anyone, written under an edit-latch (secret: proof of same authorship, not a login), private only by opt-in encryption (gray). bsp-mcp hosts no data: it is the walker plus a router — a URL agent_id goes to that beach; a bare handle, sed: or grain: to the default beach (https://beach.happyseaurchin.com); "pscale" to the bundled sentinels. Design for scale without central cost: if the answer to "who pays at scale?" is David or one server, the design is wrong.

Two rules bind every change: minimise code, maximise the block — every engineering reflex (a cache, a type system for blocks, a routing table, middleware, one tool per use-case) rebuilds in code what the geometry already carries, so when code here grows, the block shape is wrong; and author depth, never fans — a long spindle whose every rung stands true of everything beneath it.

Read the full file on GitHub · 100 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. 8d ago Changed · +72 tokens per session 2b12f6d705b9
  2. 11d ago Changed · -47 lines · -4,069 tokens per session 082dd140534b
  3. 12d ago Changed · -1 tokens per session 64a6a2b5e31d
  4. 13d ago Changed · +80 tokens per session 153dc20a4996
  5. 25d ago Changed · +103 tokens per session ac35f44c8874
  6. 1mo ago Changed · +259 tokens per session c1fcb2463f7a
  7. 1mo ago Changed · +1 lines · +154 tokens per session f6db4aad3972
  8. 1mo ago Changed · +74 tokens per session 00878a47b203
  9. 1mo ago Changed · +1 lines · +112 tokens per session 3c1700fe68d6
  10. 1mo ago First seen · 145 lines · 6,902 tokens per session scan A bd2c721ca799

Subscribe to this mod's changes

bsp-mcp-server CLAUDE.md is an instructions file published in the GitHub repository pscale-commons/bsp-mcp-server (0 stars, last pushed yesterday), licensed MIT. It adds 3,686 tokens to every session, about $0.0147 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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