gspc

gspc is a skill for Claude Code from CSOAI-ORG/councilof-ai. It costs 50 tokens per session (1,442 once invoked), scanned A, original, MIT.

An MCP server for the Council of AI's GSPC measurement board. It can read board rows, list signed cards, and verify their identifiers and Ed25519 signatures; Ed25519 is a public-key method for checking that signed data has not been altered.

In plain words
What is it for?
Use it to inspect AI-governance measurements, compare board and card indexes, and verify signed card data.
Why use it?
It gives you direct checks on measurement records instead of relying only on a displayed result or model score.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the gspc plugin — 1 skill shipped together

Good fit Use it to inspect AI-governance measurements, compare board and card indexes, and verify signed card data.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/csoai-org/councilof-ai/gspc
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.

Any agent
npx skills add CSOAI-ORG/councilof-ai --skill gspc
Clone the repo
git clone --depth 1 https://github.com/CSOAI-ORG/councilof-ai

Made for: Claude Code.

Or install gspc, the plugin that ships this one along with the rest of its 1 skill.

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 gspc

README.md
[![agentmods](https://agentmods.dev/badge/skills/csoai-org/councilof-ai/gspc/github.svg)](https://agentmods.dev/skills/csoai-org/councilof-ai/gspc)
Your own site
<a href="https://agentmods.dev/skills/csoai-org/councilof-ai/gspc"><img src="https://agentmods.dev/badge/skills/csoai-org/councilof-ai/gspc/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 gspc

Your own site · 80×15
<a href="https://agentmods.dev/skills/csoai-org/councilof-ai/gspc"><img src="https://agentmods.dev/badge/skills/csoai-org/councilof-ai/gspc.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 50 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,442 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 $0.00050 $0.01442
Opus 5.5 $0.00020 $0.00577
Sonnet 5.5 $0.00010 $0.00288
Haiku 4.5 $0.00005 $0.00144

Measured today against content hash 2fd9a9e8a81c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

gspc 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 today.

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.

distribution/plugin/skills/gspc/SKILL.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.

GSPC (Council of AI, Layer 0)

The gspc MCP server (https://councilof.ai/mcp) exposes 19 tools (14 free, 5 x402-metered).

Free:

  • board_totals — Live GSPC board totals from https://councilof.ai/api/gspc.
  • get_axis — One axis row from the live GSPC board at https://councilof.ai/api/gspc — every axis the board carries, behavioural and financial families alike, addressed by the axis id exactly as the board spells it: n, accuracy, interval, MEASURED or UNMEASURED status, family, kind, the bank or run-artifact URL behind the row, and dates.
  • verify_card — Verify a signed gspc.measurement-card under the published rule (https://councilof.ai/signed/HOW-TO-VERIFY.md): recompute the id from the canonical body bytes, then check the Ed25519 signature under the PINNED key published at did:web:csoai.org#card-attestation-1.
  • list_cards — The published signed-card index (https://councilof.ai/signed/card_index.json): what the index declares (n_cards) and how many rows it actually carries, reported next to — never reconciled with — the count the card store endpoint (https://councilof.ai/api/cards) reports for itself.
  • get_root — GET the permissionless public-root at https://councilof.ai/root.json.
  • get_card — GET one public-root card-v0 leaf by sha256 (64 hex) from https://councilof.ai/cards/{sha16}.json.
  • verify_inclusion — Check a sha256 against the live public-root merkle via GET /api/proof?sha=.
  • x402_trust — GET the latest x402 catalog trust snapshot: counts of how many catalogued x402 resources open a correct 402 challenge vs how many are phantom on the wire.
  • mcp_trust — GET the latest MCP handshake trust snapshot (https://councilof.ai/interop/mcp-trust/latest.json): counts of how many internet-facing MCP servers answer a correct initialize handshake, how many respond with an auth challenge, and how many are unreachable.
  • measurement_index — Read the latest signed measurement-capsule index published at https://councilof.ai/measurement-capsules/latest.json: the index root over every capsule, each batch (adapter, kind, capsule count, measurement states, batch Merkle root, record sha256, record signature and OpenTimestamps state), the index's own board signature re-verified here against the pinned did:web:csoai.org#board-attestation-1 key, and the anchor states published beside it (OpenTimestamps, Rekor, XRPL) — PENDING is never called attested.
  • verify_capsule — Verify one measurement capsule.
  • server_evidence — Trust per server, not totals: every published measurement capsule about ONE endpoint URL across all batches — MCP contract-parity dimensions (AUTH, PAYMENT, PROTOCOL, TOOLS, VERSION), A2A card-signature state, self-parity cells for CSOAI's own doors, and any later adapter (e.g.
  • evidence_bundle_preview — For ONE obligation (article-50, article-53 GPAI transparency, dora or cra) and an optional subject: the obligation record, its counsel-gate status and the already-signed measurement cards that are relevant to it (count plus the first cards, each with its verify link), read live from https://councilof.ai/api/evidence-bundle.
  • route — GSPC Route (free, decide-only).

x402-metered (call without x_payment to see the challenge; a challenge is not a payment):

  • commission_card — Commission one signed card-v0 receipt (surface ras.commission) for a named subject on the frozen bank via https://councilof.ai/api/request-attestation.
  • art50_marking_evidence — Article 50 marking-evidence pack via https://councilof.ai/api/art50/marking-evidence: which machine-readable marks the named methods DETECT in these bytes right now.
  • rwa_evidence — Per-request signed evidence card of ONE XRPL issued asset's deterministic on-ledger state via https://councilof.ai/api/rwa/evidence: AccountRoot lsf* flags, Domain, the two-way xrp-ledger.toml check (PASS / FAIL / UNCHECKABLE — unreachable is never FAIL), gateway_balances obligation, holders as the free reader has them, every raw fetch sha256'd.
  • receipts_batch — A historical batch of the estate's measurement receipts via https://councilof.ai/api/receipts/batch: every signed card-v0 leaf whose as_of falls in [from,to] (≤200), each with its Merkle inclusion path and the public root(s) that carried it, plus the root index for the window and one manifest card citing the batch sha256.
  • evidence_bundle — For ONE obligation (article-50, article-53 GPAI transparency, dora or cra) and an optional subject via https://councilof.ai/api/evidence-bundle: selected existing card objects with signature fields and any retained inclusion proofs, an OSCAL assessment-results wrapper and an assembly manifest.

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. today Changed 2fd9a9e8a81c
  2. 9d ago Changed 9769922560f1
  3. 13d ago First seen · 42 lines · 50 tokens per session scan A 00843c5795ff

Subscribe to this mod's changes

gspc is a skill published in the GitHub repository CSOAI-ORG/councilof-ai (3 stars, last pushed today), licensed MIT. It adds 50 tokens to every session and 1,442 once invoked, about $0.0002 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 2026-10-03.