Attester Oracle

Name: Attester Oracle
Author: maminihds

by maminihdsversion 0.2.0i★ –iRuns in the cloud

Registry nameio.github.maminihds/attester-mcp

Install

Overview

Description from the maker (original English)

Verify PyPI and npm packages, symbols, and version diffs against real artifacts. Free, no account.

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
UsageiVery new★ –

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: Developer tools

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://attester.dev/mcp/

Run this in your terminal

claude mcp add --transport http attester https://attester.dev/mcp/

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "attester": {
      "url": "https://attester.dev/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": {
    "attester": {
      "type": "http",
      "url": "https://attester.dev/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://attester.dev/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 8, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account maminihds, 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 Developer toolsi

More stars than 0% of the other 4924 servers in this category
Published to the registry more recently than 28% of the other 4924 servers in this category
Basic checks equal to or better than 100% of the other 4924 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 Attester Oracle 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 (0.2.0) reached the registry 3 months 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: GitHub, Desktop Commander, Cloudflare MCP

Alternatives

Servers in the same category from other makers, sorted by stars.

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

GitHub

GitHub’s official server lets AI read and manage code, issues and pull requests in your account. Use GitHub’s hosted version or run it locally with Docker.

by githubWidely used★ 34.2KUpdated 5 days ago

Computer or cloud

Install

Desktop Commander

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Runs on your computer

Install

Cloudflare MCP

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Runs in the cloud✓ mcp.cloudflare.com

Install

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.

attester-mcp

MCP server for attester.dev: verification and API-existence oracle tools for AI agents, callable from any MCP client (Claude Code, Cursor, Windsurf, LangChain, CrewAI).

Every result ships with a wallet-signed attestation you can verify without trusting us: POST https://attester.dev/receipts/verify is free.

Quickstart: free oracle tools, no keys

No install needed. Point your MCP client at the hosted endpoint:

"mcpServers": { "attester": { "url": "https://attester.dev/mcp/" } } }

Four oracle tools work immediately: no account, no API key, no wallet. You get 25 free calls per day per client IP, shared across the four tools, resetting 00:00 UTC. (This config block works for Claude Code, Claude Desktop, and Cursor; any MCP client that speaks streamable HTTP.)

Tool	What it does	Price per call
`attester_package_exists`	Does this PyPI/npm package name really exist? Typosquat-adjacency flags on misses.	Free (25/day keyless); $0.002 paid
`attester_symbol_exists`	Does this function, class, or constant exist in the package? Closest-match suggestions on misses.	Free (25/day keyless); $0.005 paid
`attester_symbol_signature`	Exact signature, structured params, docstring, deprecation status, resolved at a pinned version.	Free (25/day keyless); $0.01 paid
`attester_version_diff`	Symbol-level diff between two pinned versions: added, removed, changed, breaking/additive/neutral.	Free (25/day keyless); $0.02 paid

Run it locally instead (stdio): install from source with pip install git+https://github.com/maminihds/attester-mcp.git, then use "command": "attester-mcp" in the config above. A zero-install uvx attester-mcp command lands once the package is published to PyPI.

Steer your agent: CLAUDE.md / Cursor Rules snippet

- Before installing or importing a package, call attester_package_exists (and attester_symbol_exists for specific functions) to confirm the name exists. Never import a name the oracle says does not exist.

Paid tools

Tool	What it does	Price per call
`oracle_verify_work`	Check another agent's work: citation support, code correctness, data/schema validation. Verdict plus signed attestation.	$0.15 USDC
`oracle_code_research`	Cited coding research; citations are re-checked and the proof attached.	$0.10 USDC
`oracle_judge`	Grade an output against your rubric; signed score with per-criterion evidence.	$0.10 USDC
`oracle_watchtower_report`	Signed 24h report on whether an x402 service honors its advertised prices.	$0.05 USDC
`oracle_spend_check`	Pre-payment counterparty check: should your agent pay this address?	$0.005 USDC

Payment works two ways:

Prepaid credits (humans, no crypto): buy a $5 pack at this Stripe link, claim the att_live_... key once at https://attester.dev/credits/claim?session_id=cs_..., and set ATTESTER_API_KEY=att_live_... in the server env. Every paid call deducts from the balance. Check it at GET https://attester.dev/credits/balance with the key. (CREDITS_API_KEY still works as an alias.) The free oracle tools honor the key too: the demo routes skip the daily quota for it and never charge.
x402 (agents with wallets): set BUYER_PRIVATE_KEY to a Base wallet with USDC. The wrapper pays per call automatically (402, sign, retry) and sends the wallet address as X-Payer, which keys the paid endpoints' free quotas.

Without any key, the paid endpoints answer HTTP 402 with payment terms in the body.

Agent skill bundle (`skills/attester`)

The same API, packaged as an Agent Skill so agent configs load it as a default tool: when-to-use rules, exact curl per endpoint (the keyless /demo/v1/* free path for oracle checks, X-Payer free quotas for the rest), verdict reading, and receipt verification.

Install paths:

# Claude Code

/plugin marketplace add maminihds/attester-mcp

skills.sh CLI (Claude Code, Cursor, Codex, 30+ agents)

npx skills add maminihds/attester-mcp

OpenClaw (manifestless Claude bundle)

openclaw plugins install https://github.com/maminihds/attester-mcp

Or copy skills/attester/ into ~/.claude/skills/ manually. The bundle has a helper (skills/attester/scripts/call.py, stdlib + httpx) and two worked transcripts in skills/attester/examples/.

Install from source

pip install -r requirements.txt

python server.py # stdio (default, for agents) python server.py --http # streamable-http on :8100

Environment variables:

SERVER_URL: API base URL, defaults to https://attester.dev.
ATTESTER_API_KEY: prepaid credits key (att_live_...), optional.
BUYER_PRIVATE_KEY: Base wallet for x402 payment, optional.

Example clients

examples/plain_python.py: direct x402-paid call with the official SDK. examples/langchain_example.py: LangChain tool wrapper.

Attester Oracle

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 Developer toolsi

Common questions

Alternatives

GitHub

Desktop Commander

Cloudflare MCP

README from the maker

attester-mcp

Quickstart: free oracle tools, no keys

Steer your agent: CLAUDE.md / Cursor Rules snippet

Paid tools

Agent skill bundle (skills/attester)

skills.sh CLI (Claude Code, Cursor, Codex, 30+ agents)

OpenClaw (manifestless Claude bundle)

Install from source

Example clients

Links

Agent skill bundle (`skills/attester`)