arifOS — Constitutional AI Kernel

Name: arifOS — Constitutional AI Kernel
Author: ariffazil

by ariffazilversion 1!2026.10.11i★ –iRuns in the cloud

Registry nameio.github.ariffazil/arifos

Install

Overview

Description from the maker (original English)

Constitutional verdict layer for AI agents. SEAL/HOLD before mutation. F1-F13 floors; audit ledger.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs in the cloud
Transport: Streamable HTTP
Category: Accounting, finance & tax

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on the maker’s server: what you ask it goes through their server.
The registry lists no key to fill in.

You need

Runs in the cloudNothing to install; it connects over the internet

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Works in Claude on the web, desktop and mobile:

Open Settings → Connectors
Press Add custom connector
Paste the address below and press Add
If it asks you to sign in, sign in with the maker

https://mcp.arif-fazil.com/mcp

Run this in your terminal

claude mcp add --transport http arifos https://mcp.arif-fazil.com/mcp

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "arifos": {
      "url": "https://mcp.arif-fazil.com/mcp"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "arifos": {
      "type": "http",
      "url": "https://mcp.arif-fazil.com/mcp"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

ChatGPT connects only to servers on the internet:

Open ChatGPT on the web → Settings → Connectors (Apps)
Press Create or Add (some plans need Developer mode under Advanced first)
Paste the address below, give it a name and save
If it asks you to sign in, sign in with the maker

https://mcp.arif-fazil.com/mcp

Menu names can differ slightly by plan and over time.

Your choice stays on this device in a cookie; no account needed.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

We have not read this server’s tool list yet; we check endpoints in rotation.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account ariffazil, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
… Not checked yet
Endpoint responds
Not checked yet; we check endpoints in rotation
… Not checked yet
Sign-in with OAuth
Not checked yet; we check endpoints in rotation
… Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint

Compared with others in Accounting, finance & taxi

More stars than 0% of the other 1734 servers in this category
Published to the registry more recently than 65% of the other 1734 servers in this category
Basic checks equal to or better than 100% of the other 1734 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is arifOS — Constitutional AI Kernel safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed –, and the latest version (1!2026.10.11) reached the registry 22 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: Finance Toolkit, SolidInvoice, Korea Tax Calculator

Alternatives

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Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

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Korea Tax Calculator

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README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

### ⚠️ Current verified state — generated, never hand-edited

Runtime self-measurement (http://127.0.0.1:8088/health @2026-10-29T17:02:36Z): kernel degraded · floors 12/13 measured pass · vault999 healthy · release arifos-5564ca6f7f61 · drift aligned (source=built=deployed) · tools exposed 9. Per-floor provenance: .well-known/current-state.json.

Independent audit (2026-10-11, live re-probe by FI-008 + claim-level hand audit; receipts: AAA/forge_work/grant-arifos-reality-reforge-2026-10-11/): floors 2 pass · fail F2, F11, F12, F13 · 7 unmeasured = 13 distinct (raw key-count 10 includes L11/L12/L13, L-prefix aliases of the failing F11/F12/F13) · actor binding not verified (observed calls unsigned) · receipt fidelity broken on invocation-telemetry surface (HOLD persisted as ok:true) · independent reconstruction: no external verifier bound.

These are two different witness objects. Self-measurement ≠ independent audit;

unmeasured is not pass. If this block conflicts with the live endpoint, the endpoint

wins — re-run python scripts/generate_current_state.py.

Machine state: .well-known/current-state.json ·

Badge feed: .well-known/badges/ ·

Known gaps: What Is Not Yet Proven

arifOS

Authority before execution.

arifOS is a model-independent authority plane for AI agents. It evaluates consequential proposals against thirteen constitutional floors *before* execution, returns a governed verdict, preserves the human veto, and records what happened as an auditable receipt.

In a world where intelligence is abundant, authority becomes the scarce resource. arifOS keeps judgment independent from execution.

Documentation · Live Kernel · MCP · MCP Registry (Glama) · PyPI · Security · Evidence

Proposer ≠ Judge ≠ Executor ≠ Witness

Human sovereignty > machine authority

What arifOS is not: not an AI model · not an agent framework · not an execution engine (A-FORGE executes) · not an attention plane (AAA attends) · not the witness (FRAME witnesses; VAULT999 remembers) · not a substitute for authentication, sandboxing, or legal review.

Audience	What you get
Human	A quiet veto: the agent proposes, the kernel records a verdict, you stay sovereign
Agent / A2A	MCP tools + receipts. You do not get the keys. Judgment by arifOS, discovery by AAA, execution by A-FORGE
Institution	Policy floors F1–F13, a hash-chained VAULT999 audit trail, model-vendor independence
Machine / MCP	Streamable HTTP endpoint, 8 canonical verbs, published schemas
Registries & Indexers	Glama MCP Directory (Score: A) · `server.json` (Official MCP Registry) · `CURRENT_VERIFIED_STATE.md` · `llms.txt` · `CITATION.cff`

Live: https://arifos.arif-fazil.com · MCP :8088 · sister organs AAA · A-FORGE · GEOX

Who built this

arifOS was built by Arif Fazil, a senior exploration geoscientist who spent his career making decisions where observations are incomplete, interpretations are probabilistic, provenance matters, and irreversible action must be gated. He transferred that discipline into agent runtime governance.

I am a geologist, not a programmer. I did not write this codebase and I do not read it line by line. What I do is point at where the problem is — and the agents in my federation solve it, inside the constitution and the review gates I set, with the commit trail to show who ran what.

Read the commits if you want to check that claim: the author fields are agent handles, not aliases of mine. That is the deliberate shape of this project, not a detail being hidden. It also sets the honest expectation — the design and the judgment are mine, the implementation is theirs, and where the two disagree, the bug is mine to answer for.

The system is named after its founder and reflects a core belief: governance is a systems problem, not a model problem.

One human, and the agents he directs.

30-second proof

pip install arifos

python examples/enterprise_operations_demo.py

Three of the six graded scenarios:

Read customer account data        → SEAL   (receipt RCPT-…)

Major refund (50× the ceiling) → HOLD (awaiting human) Delete account + audit trail → VOID (blocked by a hard floor)

Full transcript: docs/QUICKSTART.md. The demo runs in-process — no real records or funds are touched.

What works today

Deterministic rejection without consulting an LLM. The judge refuses on the constitution, not on a model opinion (gate: hard_deterministic, llm_consulted: false).
Prevention of a tested unauthorised mutation. One MUTATE-class call without presented authority was stopped before execution. Stronger: tampered-ACT tokens were rejected on 3 surfaces (kernel validate + kernel observe + A-FORGE policy gate) — receipts forge_work/lingkaran1/, measured 2026-10-29/30.

What is not yet proven

Every row names its own gap. Repairing a claim by substituting a stronger one is worse than the stale claim it replaced. (Closed rows are receipted in docs/evidence/GAP_HISTORY.md.)

Gap	Risk	Status
Independent security audit	Adversarial bypass testing not published	In progress — external researcher reviewing since 2026-08-25. Findings so far: fetch-surface SSRF (fixed, `1!2026.9.1`); Cypher injection (HIGH — key whitelist landed) and fastmcp path traversal (MEDIUM — containment guard landed). See SECURITY.md
Sovereign-binding of irreversible acknowledgement	`ack_irreversible` and `actor_signature` are transported as payload fields; nothing published shows a human signature bound to `(transaction_hash ‖ state_hash ‖ nonce)`, single-use, scoped, unforgeable by the proposing agent	Open — design drafted (`docs/judgment-integrity-2026-09-22/`), not implemented. F13 is enforced by convention and band-gating, not cryptographic transaction binding
Ledger head not externally anchored or signed	A hash chain held entirely by one party cannot detect wholesale rewrite by that party	Open — VAULT999 today is self-verifiable, not independently attestable
Third-party evaluation	No external reviewer has published findings	In progress since 2026-08-25; nothing published
Reproducible demo by strangers	Onboarding path not independently tested	Partial — demo verified here; no stranger has reproduced it unaided
Enterprise deployment	No production customer reference	Open
Standards conformance	MCP/A2A results not published externally	Partial — report: `result: PARTIAL`, per-tool schema validation DEFERRED
SBOM and signed releases	Supply-chain integrity unverified externally	Partial — CycloneDX on publish; no signing, no CVE scan
Test suite	Needs a live kernel (`tests/conftest.py` refuses without `:8088`, by design)	7,668 tests collect clean (2026-10-05); the identity/authority subset carries 34 pre-existing failures vs 321 passes (2026-09-30) — quote a failure set, never a bare pass count
Observability	Tracing partially wired	Partial — sovereign Postgres + arifFlow live; OTel spans on all 8 verbs; caller-side propagation incomplete
Semantic layer (Graphiti)	Knowledge graph retired from the read path	`graphiti_read: retired_888` (2026-09-04); semantic floor disabled by choice (`ARIFOS_ML_FLOORS=0`)
Comparative benchmark	No published comparison against alternative frameworks	Open
Maintainer continuity	Single sovereign, single reviewer; no succession or key-recovery procedure published	Open — relevant to institutional adoption
Identity registry in two copies	`contracts/identity.py` ↔ `arifosmcp/contracts/identity.py` had diverged; a one-sided edit ships split-brain identity	Mitigated 2026-09-30 (tripwire tests, 18 actors aligned) — consolidation to one owner still open

See SECURITY.md for the threat model and disclosure policy, and docs/evidence/claims.yaml for the machine-readable claim registry.

How it works

  Agent proposes action

│ ▼ ┌─────────────────┐ │ arifOS Kernel │ Evaluates against 13 constitutional floors │ (:8088) │ Records provenance + evidence refs + hashes └────────┬────────┘ │ ┌──────┼────────┬──────────┬───────────┐ ▼ ▼ ▼ ▼ ▼ SEAL HOLD SABAR PARTIAL VOID (go) (wait for (defer — (proceed (blocked by human) evidence with a floor) pending) cooling) │ │ ▼ ▼ Execute Human via reviews A-FORGE │ ▼ Receipt in VAULT999 (append-only hash chain)

The judge never executes. The executor never certifies.

The verdict lattice

Verdicts are ordered and non-compensatory — a

Only the beginning is shown; read the rest in the repo

arifOS — Constitutional AI Kernel

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Accounting, finance & taxi

Common questions

Alternatives

Finance Toolkit

SolidInvoice

Korea Tax Calculator

README from the maker

arifOS

Authority before execution.

Who built this

30-second proof

What works today

What is not yet proven

How it works

The verdict lattice