Claim Grounding

Name: Claim Grounding
Author: truepointmarketingpartners-dotcom

by truepointmarketingpartners-dotcomversion 1.4.7i★ 0iRuns in the cloud

Registry nameio.github.truepointmarketingpartners-dotcom/claim-grounding

Install

Overview

Description from the maker (original English)

Fact-check AI answers with cited sources. Pay per call in USDC on Base via x402.

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 checksi4 of 4 passedChecked from public information; code not scanned yet
UsageiEarly★ 0

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: Search & AI memory

Install

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

Before you install

Basic checks: 4 of 4 passed
Runs on the maker’s server: what you ask it goes through their server.
Can do 5 things (tools) extract_claims, quick_check, verify_claim, check_answer …
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://claim-grounding.prospectintel.workers.dev/mcp

Run this in your terminal

claude mcp add --transport http claim-grounding https://claim-grounding.prospectintel.workers.dev/mcp

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "claim-grounding": {
      "url": "https://claim-grounding.prospectintel.workers.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": {
    "claim-grounding": {
      "type": "http",
      "url": "https://claim-grounding.prospectintel.workers.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://claim-grounding.prospectintel.workers.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

Tool names and descriptions exactly as the server reported them on Nov 8, 2026. The maker wrote them, not us; we show them as plain text.

extract_claims
Split a text (for example an AI-generated answer) into atomic factual claims. Each claim includes span, grounding_required, claim_type (number|date|quantity|quote|named_entity_fact|comparison|opinion|prediction|other), check_worthiness (high|medium|low), and the source sentence.
quick_check
Fast, low-cost check of ONE factual claim. Returns verdict supported, contradicted or unsure, a confidence score, a short reason and 1-2 public sources (Wikipedia, plus Wikidata structured facts where they apply) with quote and URL. Synchronous. Cheaper and faster than deep_verif
verify_claim
Check one factual claim against public Wikipedia sources and return a verdict (supported, contradicted, outdated, mixed or insufficient_evidence), a confidence score, a short reason, the supporting quote and the source URL. Says insufficient_evidence instead of guessing. Price: $
check_answer
Fact-check a whole answer: extracts every checkable claim and verifies each against Wikipedia, plus Wikidata structured facts for dates, numbers, quantities, ordinals and records. Returns per-claim verdict, confidence, quote, source URL, sentence span and suggested_correction (qu
deep_verify
Use when a claim is high-stakes, or when check_answer or extract_claims marks it unsure (their next_step gives the exact request). Verifies up to three claims against Wikipedia, Wikidata, Google News, Europe PMC, FRED and SEC EDGAR; returns verdict, confidence, evidence for and a

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 10, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account truepointmarketingpartners-dotcom, which owns the repo
✓ Pass
Still maintained
Code last changed 28 days ago
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
✓ Pass
Endpoint responds
Responded in 65 ms (HTTP 200)
– Not applicable
Sign-in with OAuth
No sign-in needed
✓ Pass
No hidden instructions in tool descriptions
Read 5 tool descriptions and found no hidden instructions to the AI

Compared with others in Search & AI memoryi

More stars than 0% of the other 5862 servers in this category
Published to the registry more recently than 60% of the other 5862 servers in this category
Basic checks equal to or better than 100% of the other 5862 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 Claim Grounding safe?

It passed 4 of 4 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 28 days ago, and the latest version (1.4.7) reached the registry 26 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: Ruflo, Context7, Metabase

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

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Context7

Feeds AI the latest docs for libraries and frameworks before it answers, so code it writes does not use outdated, removed functions.

by upstashWidely used↓ 972.7K/wk★ 64.4KUpdated yesterday

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Metabase

Lets AI clients search, explore, query, and visualize data in a Metabase instance.

by metabaseWidely used★ 50.3KUpdated 6 months ago

Runs in the cloud

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.

TruePoint Prospect Intelligence & Claim Grounding

Pay-per-call APIs for AI agents. Pay USDC on Base per call with x402. No API key, no signup. People can pay by card instead.

Prospect Intelligence: work-email lookup and company research for sales agents.
Claim Grounding: checks factual claims against public sources and returns a verdict, confidence and citations.

Accuracy results: https://claim-grounding.prospectintel.workers.dev/accuracy (92 of 100 hard claims right on Deep verify, 0 confidently wrong; 38 of 38 found emails exactly right). Read the limitations there too.

30-second quickstart

Option A: Coinbase agentic wallet (`awal`)

npx awal@latest status          # sign in / check wallet

npx awal@latest balance # needs USDC on Base npx awal@latest x402 pay https://claim-grounding.prospectintel.workers.dev/v1/verify_claim \ -X POST -d '{"claim":{"text":"The Eiffel Tower is in Paris"}}' --max-amount 1000000

--max-amount is in USDC atomic units (1000000 = $1.00), so you can never pay more than you set.

Option B: any x402 client. Call the endpoint with no payment. You get HTTP 402 with the price in the body and a payment-required header. Sign the payment with your x402 client and retry. Settlement uses the Coinbase CDP facilitator on Base (eip155:8453).

Option C: MCP. Point an MCP client (streamable HTTP) at:

https://claim-grounding.prospectintel.workers.dev/mcp
https://prospect-intelligence.prospectintel.workers.dev/mcp

tools/list is free. Tool calls return x402 payment instructions; the paid HTTP route does the work.

Option D: pay by card (people). Stripe checkout, no wallet needed:

Product	Price	Link
Claim check	$0.50	https://buy.stripe.com/00w5kDcBN8ri9Go6NP0co02
Deep verify	$2.00	https://buy.stripe.com/9B614n1X9bDuf0I2xz0co06
Email lookup	$0.50	https://buy.stripe.com/4gMcN56dp36Y05O4FH0co05

Card prices are higher than agent prices because Stripe has a $0.50 minimum and per-charge fees.

Prices (USDC per call)

Claim Grounding: `https://claim-grounding.prospectintel.workers.dev`

Method	Path	Price	What it does
POST	`/v1/extract_claims`	$0.05	Split text into checkable claims
POST	`/v1/verify_claim`	$1.00	Check one claim (Wikipedia)
POST	`/v1/check_answer`	$1.00	Split an AI answer into claims and check each (Wikipedia)
POST	`/v1/deep_verify`	$0.75	Check against six sources: Wikipedia, Wikidata, Google News titles, Europe PMC, FRED, SEC EDGAR. Async: poll `GET /v1/jobs/:id` (free)

Verdicts: supported, contradicted, outdated, mixed, insufficient_evidence.

Prospect Intelligence: `https://prospect-intelligence.prospectintel.workers.dev`

Method	Path	Price	What it does
POST	`/v1/email`	$0.08, charged only when an address is found	One work email for a name at a domain, with verification status, source and a `send` / `send_with_caution` / `verify_first` / `do_not_send` recommendation
POST	`/v1/basic`	$0.10	`research_company`
POST	`/v1/enriched`	$0.75	`enrich_prospect`
POST	`/v1/tools`	$0.75	Any one named tool: research_company, research_person, find_decision_makers, analyze_marketing_opportunity, identify_buying_signals, enrich_prospect, score_prospect, generate_prospect_brief
POST	`/v1/deep`	$3.00	Full prospect brief with a 0–90 score

Sample request and response

Request (real, paid, Oct 12, 2026):

npx awal@latest x402 pay https://claim-grounding.prospectintel.workers.dev/v1/verify_claim \

-X POST -d '{"claim":{"text":"The Eiffel Tower is in Paris"}}'

Response (HTTP 200, shortened with …):

"mode": "fast", "job_id": null, "claim": { "claim_id": "clm_14b3ffa736fd4fd1", "text": "The Eiffel Tower is in Paris", "span": { "start": 0, "end": 29 }, "grounding_required": true, "verdict": "supported", "status_detail": "supported", "confidence": 0.95, "citations": [ { "url": "https://en.wikipedia.org/wiki/Eiffel_Tower", "title": "Eiffel Tower", "quote": "The Eiffel Tower is a lattice tower on the …", "retrieved_at": "…", "provider": "wikipedia" } ], "rationale_short": "…" }, "why": "…", "source": "https://en.wikipedia.org/wiki/Eiffel_Tower", "receipt": { "claim_hashes": ["sha256:…"], "evidence_urls": ["https://en.wikipedia.org/wiki/Eiffel_Tower"], "verdicts": ["supported"], "priced_usd": 1, "created_at": "…" } }

Paid on Base: tx 0x839f…a901.

The unpaid first call (real, live) returns HTTP 402:

"x402Version": 2, "error": "Payment required", "accepts": [{ "scheme": "exact", "network": "eip155:8453", "amount": "80000", "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913", "payTo": "0x485FfC037f02dDDc154A454a9cA89C4B1b29e25b", "maxTimeoutSeconds": 300, "extra": { "name": "USD Coin", "version": "2" } }] }

(80000 = $0.08 for /v1/email. The asset is USDC on Base.)

Errors

Status	When	Charged?
200	Success	Yes
402	No or invalid payment. Body and `payment-required` header list what to pay	No
400	Bad input, e.g. missing `claim.text`, or `mode: "deep"` sent to verify_claim (use `/v1/deep_verify`). On email: missing domain or names	No
404	Email lookup found no address (`no_result`), unknown path, or unknown job id	No
405	Non-POST request to `/mcp`	No
409	Card payment already used for a lookup (one payment = one lookup)	No
422	Email provider rejected the input (e.g. domain has no mail records)	No
451	Email lookup: the person opted out of data processing. Do not contact or store	No
502 / 503	Upstream source or email provider unavailable. Safe to retry later	No

x402 only settles payment on a 2xx response, so failed calls cost nothing.

What these tools don't do

Not legal, medical, financial or compliance advice. Not a certification.
English only. Public sources only; no paywalled or private documents.
Can return insufficient_evidence. Very recent news may lag.
No guarantee an email is delivered or read. No personal/private emails, no phone numbers.
Decision-makers are unknown unless a public source names them. Nothing is invented.

Discovery

/docs · /.well-known/x402 · /openapi.json · /llms.txt · /.well-known/mcp/server-card.json on each host. Listed on agentic.market.

Worker source stays private; this repo is the public surface for agents and builders.

Support

Email: truepointmarketingpartners@gmail.com
Phone: (951) 234-7620
Site: https://www.truepointmarketingpartners.com/ai-agent-tools

Claim Grounding

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 Search & AI memoryi

Common questions

Alternatives

Ruflo

Context7

Metabase

README from the maker

TruePoint Prospect Intelligence & Claim Grounding

30-second quickstart

Prices (USDC per call)

Claim Grounding: https://claim-grounding.prospectintel.workers.dev

Prospect Intelligence: https://prospect-intelligence.prospectintel.workers.dev

Sample request and response

Errors

What these tools don't do

Discovery

Support

Claim Grounding: `https://claim-grounding.prospectintel.workers.dev`

Prospect Intelligence: `https://prospect-intelligence.prospectintel.workers.dev`