Spec Driven Development
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Beschreibung vom Entwickler (englisches Original)
Screens x402 payments before settlement for injected payee addresses and sellers who never deliver.
Diese drei werden nie zu einer Punktzahl zusammengefasst: Meinungen, Messungen und Beliebtheit sind verschiedene Dinge.
Für diesen Server haben wir noch keine Zusammenfassung in einfacher Sprache geschrieben. Unten stehen die Fakten, die wir aus der Registry gelesen haben.
Wähle die KI-App, die du nutzt, und kopiere die Einstellungen.
Du brauchst
Welche App nutzt du?
Wähle oben deine App. Wir merken sie uns, damit der Button beim nächsten Mal „In … installieren“ anzeigt.
Öffne Claude Desktop → Settings → Developer → Edit Config und füge dies in claude_desktop_config.json ein
{
"mcpServers": {
"tollwarden": {
"command": "npx",
"args": [
"-y",
"tollwarden"
]
}
}
}Führe das in deinem Terminal aus
claude mcp add tollwarden -- npx -y tollwardenIn .cursor/mcp.json in deinem Projekt oder in ~/.cursor/mcp.json einfügen
{
"mcpServers": {
"tollwarden": {
"command": "npx",
"args": [
"-y",
"tollwarden"
]
}
}
}Dein Browser fragt, ob er die App öffnen darf, dann zeigt die App die Einstellungen und bittet dich um Bestätigung. Schlüsselwerte bleiben leer, damit du sie selbst einträgst.
In .vscode/mcp.json in deinem Projekt einfügen
{
"servers": {
"tollwarden": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"tollwarden"
]
}
}
}Dein Browser fragt, ob er die App öffnen darf, dann zeigt die App die Einstellungen und bittet dich um Bestätigung. Schlüsselwerte bleiben leer, damit du sie selbst einträgst.
Dieser Server läuft auf deinem Computer, und ChatGPT kann sich nur mit Servern im Internet verbinden. Wähle eine andere App.
Deine Auswahl bleibt in einem Cookie auf diesem Gerät; kein Konto nötig.
Diese Einstellungen werden aus dem Registry-Eintrag des Entwicklers erzeugt. Wenn in der README etwas anderes steht, folge der README.
Läuft auf deinem Computer; die Tool-Liste erscheint nach der Installation in deiner KI-App.
Wir prüfen Informationen, die jeder sehen kann; den Code haben wir nicht gelesen. Checks, die nicht zutreffen, werden nicht mitgezählt. · Geprüft am 6. Nov. 2026
Der Registry-Name wurde über die Domain tollwarden.com bestätigt (die Registry prüft, wem die Domain gehört)
Dieses Repo haben wir noch nicht von GitHub gelesen
Dieses Repo haben wir noch nicht von GitHub gelesen
Dieser Server läuft auf deinem Computer; es gibt keinen Endpunkt im Internet
Läuft auf deinem Computer und nutzt stattdessen lokale Einstellungen
Läuft auf deinem Computer; Tool-Listen können wir nur von Endpunkten im Internet lesen
Verglichen mit allen aktiven Servern dieser Kategorie in der Registry. Sterne zählen nur, wenn dem Herausgeber das Repo gehört.
Er hat 1 von 1 zutreffenden Basischecks bestanden. Den Code haben wir nicht gelesen. Bevor du einen Schlüssel oder Token hinzufügst, sieh nach, welche Zugriffe der Server verlangt, und nutze einen Schlüssel, der nur die Berechtigungen hat, die du brauchst.
Die Registry nennt keinen erforderlichen Schlüssel, manche Server bitten dich aber bei der ersten Nutzung, dich anzumelden.
Er läuft auf deinem Computer. Deine KI-App startet ihn bei Bedarf, und die Daten laufen nicht über die Server des Entwicklers (außer der Server ruft selbst einen Onlinedienst auf).
Das GitHub-Repo wurde zuletzt – geändert, und die neueste Version (1.6.0) kam letzten Monat in die Registry.
Apps, die MCP unterstützen, etwa Claude Desktop, Claude Code, Cursor und VS Code. Außerdem brauchst du Node.js auf deinem Computer.
In derselben Kategorie: Spec Driven Development, Remote Desktop Commander, yontu
Server derselben Kategorie von anderen Entwicklern, sortiert nach Sternen.
So liest du eine Karte:★ GitHub-SterneiDrei Säulen: Bewertungen · Checks · NutzungiAktualisiert = neueste Version in der Registry veröffentlichti
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.
Türkçe yazı denetimi: TDK kuralları, yapay zekâ izleri, metin türüne göre üslup.
Unverändert aus dem Repo des Entwicklers übernommen. PopNx MCP hat den Inhalt weder geprüft noch empfiehlt es ihn. HTML, Bilder und Skripte wurden entfernt. Links führen von dieser Website weg.
A payment security firewall for [x402](https://x402.org) — screen every micropayment before it settles.
Agents that pay over x402 get drained in predictable ways: secrets leak through payment metadata, captured authorizations get replayed, quoted prices get inflated, and poisoned web content tricks agents into paying addresses they never planned to pay. TollWarden is one POST before settlement that checks for all of it and returns allow / flag / block with machine-readable, per-check reasons — in ~0.6 ms.
TollWarden is advisory and non-custodial: it never touches private keys, wallets, or funds. It wraps around whatever facilitator and wallet your agent already uses. And it's a first-class x402 seller itself — its endpoints are paid via the official x402 middleware, settle through the Coinbase CDP facilitator, and carry Bazaar discovery metadata.
Agent decides to pay ──► POST /v1/scan/outgoing ──► allow ──► wallet settles
│ ├──► flag ──► agent pauses / confirms intent └──► block ──► wallet refuses (reason attached)
npm install @tollwarden/client # TypeScript/Node
pip install tollwarden # Python
import { TollWardenClient, TollWardenBlockedError } from "@tollwarden/client";
const tollwarden = new TollWardenClient({ agentId: "my-agent" }); // free API key auto-minted, 100 free scans
tollwarden.observe(fetchedPageText, { sourceUrl }); // tag what your agent just read → injection detection await tollwarden.guardOutgoing(payment); // throws TollWardenBlockedError on a block verdict
New here? [Protect your x402 agent in 5 minutes →](QUICKSTART.md)
The SDK (sdk/, zero dependencies) also verifies every verdict's Ed25519 attestation against a pinned key, tracks your free-call quota, and can subscribe to plans autonomously. Wallet authors get standalone verifyAttestation() / computePaymentCommitment() — and the enforcement kit: new TollWardenEnforcer({ trustedKeyHex }).guardSigner(account) wraps any viem/ethers signer so it physically refuses to sign an x402 payment authorization without a fresh, payment-bound allow-verdict.
Building on an agent framework? TollWarden ships drop-in packages that give your agent "scan before you pay" in about two lines — a toolset plus a provenance mechanism that auto-tags what the agent reads, so the prompt-injection-triggered-payment detector works without any prompt engineering:
| Framework | Package | Install |
|---|---|---|
| LangChain | langchain-tollwarden | pip install langchain-tollwarden |
| CrewAI | crewai-tollwarden | pip install crewai-tollwarden |
| NeMo Agent Toolkit | nemo-tollwarden | pip install nemo-tollwarden |
| Coinbase AgentKit | agentkit-tollwarden | pip install agentkit-tollwarden |
| Vercel AI SDK | @tollwarden/ai-sdk | npm install @tollwarden/ai-sdk |
Each exposes the same three tools (scan / check reputation / report) and a framework-native way to feed what the agent read into injection detection. LangChain uses a callback, CrewAI an after-tool-call hook and the Vercel AI SDK an onStepFinish handler, and all three tag it automatically. NeMo and AgentKit take it as an explicit content argument, and the AgentKit action also fills in the payer from the agent's own wallet. Every package also ships a guarded_payment / guardedPayment wrapper for enforcement by construction (the payment executor never runs on a block verdict), and the NeMo one accepts an async executor. See each package's README for the two-line setup, or its page under tollwarden.com/integrations.
The AI agent payment security guide walks through the attacks these checks answer, one failure mode at a time, with each check's limits.
Core detectors
| Check | What it catches |
|---|---|
| PII / secret detection | EVM private keys, seed phrases, AWS/OpenAI/Anthropic/GitHub/Slack keys, JWTs, ?api_key= URL credentials, SSNs, Luhn-validated card numbers, emails, phones — in resource_url, description, reason, and metadata, *before* they're transmitted |
| Replay detection | Nonce reuse (stale or captured payment authorizations), scoped network:payer:nonce, configurable TTL window |
| Duplicate purchase | The same purchase authorized twice. x402 clients sign a fresh authorization for every 402 they see, so a retried request arrives as a second valid payment with a new nonce, which nonce-replay checks admit and which can settle alongside the first. An outgoing scan that matches your previous scan of the same purchase (payer, pay_to, asset, amount, resource_url) within 60 s under a different authorization is flagged replay.duplicate_purchase. On API-key scans the flag names the earlier scan_id. Anonymous scope is client-declared, so there the flag never echoes another caller's id. A pre-sign scan and the post-sign scan of the same authorization count once. Deliberate repeats clear it: pass the earlier scan's scan_id as context.repeat_of (one attempt at a time), or report the earlier attempt's outcome as delivered, which the SDK payment wrappers do automatically when a paid call succeeds. not_delivered does not clear it, because that is the attempt that gets retried. Flag-only, since TollWarden sees scans, not settlements, and cannot know the first one settled. A blocked payment records nothing |
| Overpayment detection | Above a configurable multiple of expected price (flag ≥3×, block ≥10×) plus an absolute ceiling |
| Prompt-injection-triggered payments | Payments whose *decision* originated from content the agent just read (tool result / fetched page) rather than its own planning step; escalates on weighted injection tells in that content (override/redirect phrasing across a broad verb/object corpus and in 8 languages: English, Spanish, Portuguese, French, German, Russian, Chinese, Japanese; spoofed system/chat-template/Guidance markers, smuggled model boundary tokens, fabricated conversation turns, concealment, business-email-compromise phrasing — "our payment address has changed, no need to verify" — and urgency pressure), with extra weight when a tell sits near an address-like token. Scored the way injections are shaped: weak tells only add up when they cluster, pressure alone (urgency, transcript form, hidden characters) never blocks, and a human's own "pay X to 0x…" instruction is not scored against them. Content is scanned both raw and with HTML tags, entities and markdown emphasis stripped, so **Ignore** all previous instructions reads as the sentence it renders as. Blocks when the pay_to address itself came from that content — even split across lines or separators, missing its 0x, or laced with invisible characters |
| Resource URL risk (incoming) | IP-literal hosts, punycode/homoglyphs, link shorteners, user@host tricks, non-HTTPS, credential demands ("send your seed phrase") |
| Counterparty reputation | Shared post-hoc report registry, cross-checked on every scan; reporting is always free. Blocked injection scans also feed it automatically: a wallet caught being planted in just-read content (or used as vanity-bait) is flagged on every agent's future scans of it — one detection becomes network-wide protection (flag-only; scan inputs are client-supplied) |
| Delivery outcomes | Measured, commitment-bound delivery history per counterparty — a clean payment to a seller who never ships still fails you. Sellers with low delivery rates or repeated no-ships get flagged (never blocked: H-2 applies to measured history too) |
Zero-latency hardening tier — checks that hold even when the calling agent's narration is compromised:
| Check | What it catches |
|---|---|
| Velocity limits | ≥N scans/min (flag; block at 2×), cumulative hourly spend cap — rate and spend are observed facts, not self-reports. Scoped to the account behind your API key, so a fresh agent_id per request opens no new window; only anonymous scans fall back to agent_id/payer. A payment TollWarden blocks still takes a rate slot but adds nothing to the hourly spend, so a seller's absurd quote, refused at the ceiling, does not lock you out of paying anyone else for the next hour |
| First-contact size cap | First payment to a never-seen counterparty above a threshold |
| Asset verification | asset contract that isn't canonical USDC on the declared network (lookalike-token attack). The network may be a CAIP-2 id or an x402 v1 name (base, base-sepolia, polygon, ethereum); both reach the same check |
| Merchant pinning (TOFU) | Two tiers. Your account's own pin: pay_to rotation on a domain *you* have paid before → block — nobody else can have written that record. Shared observation: the first address *any* caller presented for the domain; a mismatch there is a flag ("another caller saw a different address"), because both sides are client input — it becomes a block only once the non-blocking CDP Bazaar cross-check has verified the pinned address as the domain's merchant. Pin age and the named corroboration sources ship as signed attestation fields (see below), so a wallet can tell a four-minute-old pin from a six-month-old one instead of trusting both equally |
| Address poisoning | pay_to that matches a counterparty you have paid, your own pinned merchant, or a CDP-verified pin on its first + last characters but differs in the middle — the truncated-display ("0x2096…287C") vanity-address attack → block. A lookalike of an address some *other* caller merely presented → flag, so a stranger cannot seed a vanity "pin" and get your honest payment blocked as the lookalike. Also catches bait: a near-copy of the recipient or a trusted address *planted in the content the agent just read*. Blocked payments are rolled back out of trust state, so repeat attempts keep detecting |
| ScoutScore trust signal (opt-in) | Merchant domains rated LOW/VERY_LOW by ScoutScore (spam farms, template clones, dead endpoints) → flag, clearly labeled as an external third-party signal. Lookups are async + cached (zero scan latency), share the domain only, and can never block on their own. Enable with SCOUTSCORE=on |
| Known-bad list | O(1) membership against a curated/synced badlist |
| Deep content analysis | Encoded/obfuscated injection payloads decoded and rescanned: base64 (both alphabets, line-wrapped, space-chunked, double-encoded), hex, percent-encoding, HTML entities, JS/JSON \x/\u escapes, Unicode tag-character smuggling ("invisible ASCII"), zero-width and homoglyph obfuscation (Cyrillic, Greek, IPA, small capitals, dotless-i — plus a mixed-script-word signal for lookalikes the fold table does not know), leetspeak (1gn0re) and letter-spacing (i g n o r e). Every pass is linear in the 200 KB content cap and guarded by a latency test. Bypassed below MICRO_BYPASS_USD (default $0.005) per payment, but drip-resistant: once cumulative scanned spend to a counterparty crosses the same threshold, the deep tier runs an
Nur der Anfang wird gezeigt; den Rest findest du im Repo