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MARKET MONITOR / CATALOGUE Services 132,778 MCP listed 40,869 x402 91,990 Rails Base / Solana / Polygon / Arbitrum Imported 2026-10-31 · 3 sources
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Daily transfers, volume and coverage →

Sentiment Analysis | Blackwood

x402 resource x402 REST

x402-gateway.blackwoodstate8.workers.dev · x402-gateway.blackwoodstate8.workers.dev · AI Models & Inference

Provider site ↗

Use when you need sentiment analysis, text sentiment or opinion mining of reviews, comments or headlines in English. Do not use for neutral or emotion labels, non-English text or aspect-level sentiment. Returns JSON with sentiment analysis of English text: a positive or negative label with a confide

Price per call 0.004 USDC per call published unit: per call
Calls · 30d 6 counted by the source, no daily split
Payers · 30d 3 distinct paying addresses seen by the source
Observed inflows · 30d $0.024 6 transfers to the payout address
Inflow growth · 7d — not comparable (baseline under $1 or window incomplete)
Payment evidence Observed transfers confidence: medium · read 2026-10-31

Observed inflows · last 30 days

$0.01USD observed / day
2026-10-01grey = not scanned · UTC days2026-10-30
Observed inflows by window for Sentiment Analysis | Blackwood.
Window Observed Transfers
Last complete day (2026-10-30) $0.00 0
Last 7 days $0.004 1
Last 30 days $0.024 6
Growth, 7d against the 7 before not comparable
Source: on-chain transfer scan (USDC on Base) Window: 2026-10-01 → 2026-10-30 Scanned: 30/30 days Sample: 30 days with a measurement First seen: 2026-10-01 Last update: 2026-10-30

Daily history →. Observed transfers show value arriving at the payout address; they do not establish service revenue.

Blockchain wallets

Full addresses · public payment evidence

Receiving wallets are payment addresses published for this service. Sending wallets transferred funds to an exclusive receiving address; this alone does not prove a purchase or identify an agent.

Receiving wallets · provider payment addresses

All published receiving wallet addresses for Sentiment Analysis | Blackwood.
NetworkFull wallet addressEvidence
Base 0xd25ca2ea2a5017b4297157b0635e3fdbb26a326a Exclusive to this catalogue serviceFrom source record · source: x402_bazaar

Sending wallets · observed counterparties

No sending wallet addresses have been retained for this service. Buyer wallets are unknown; daily totals and reported payer counts do not reveal their addresses.

Coverage includes retained scans only, not every historical transaction. Earlier daily totals cannot recover sender addresses. Sender lists exclude shared receiving wallets, whose transfers could belong to another service. A provider address does not establish wallet ownership.

Competitors & category benchmark

Rank the whole category →
Closest competitors AI Models & Inference

Sorted by source-measured calls, not by our opinion. The right-hand figure is observed inflow, which stays empty for peers whose address is shared.

Category benchmark 2,757 services in this category
With a measured call count 902 (32.7 %)
With a published price 1,059 (38.4 %)
With attributable inflows 40 (1.5 %)
Observed inflows · 30d $161,042.49
Median measured calls 2
Median price per call $0.01

Similar services

All of AI Models & Inference →

BlockRun.AI x402 REST usage

AI chat completions API - pay per request with USDC on Base

blockrun.ai AI Models & Inference 86,915 calls / 30d checked 2026-10-31
0.002 USDC per call per call

Fetch x402 REST usage

Web scraping / URL fetch: retrieve any web page and return clean, LLM-ready markdown text. Strips boilerplate, ads, and navigation. Stealth HTTP client bypasses common bot blocks. Cheapest way to read a webpage.

api.clawfetch.ai AI Models & Inference 2,976 calls / 30d checked 2026-10-31
0.001 USDC per call per call

Completions x402 REST usage

Get OpenAI-compatible inference from many models at market prices via Surplus Intelligence.

api.surplusintelligence.ai AI Models & Inference 1,634 calls / 30d checked 2026-10-31
0.003301 USDC per call per call

a2apay Agent Query x402 REST usage

On-demand AI responses backed by autonomous ICP canisters. Submit a prompt, get an answer — redundant infrastructure, pay-per-query, no account required.

a2apay.io AI Models & Inference 1,171 calls / 30d checked 2026-10-31
0.028 USDC per call per call

Chosen by category and by whether we have measured them, not by who pays us. A sponsored placement in this list is labelled as such.

Service details, payment routes and source evidence

Where you can pay

2 routes from the provider's payment requirements
Payment networks and amounts published for Sentiment Analysis | Blackwood.
Network Scheme Amount Asset
Base exact 0.004 USDC
Base upto up to 0.004 USDC

“exact” is the price per call. “upto” is a ceiling the client sets, not a price. Atomic amount 4000 = 0.004 USDC per call on Base. 2 payment options published.

What you can call

access: payment per call (x402)

endpoint https://x402-gateway.blackwoodstate8.workers.dev/v1/sentiment

Request

{
    "body": {
        "texts": [
            "The checkout was fast and the support team was great.",
            "The package arrived broken and nobody answered my emails."
        ]
    },
    "bodyType": "json",
    "method": "POST",
    "type": "http"
}

Response

{
    "example": {
        "model": "@cf/huggingface/distilbert-sst-2-int8",
        "results": [
            {
                "label": "positive",
                "negative": 0.0001,
                "positive": 0.9999,
                "score": 0.9999,
                "text": "The checkout was fast and the support team was great."
            },
            {
                "label": "negative",
                "negative": 0.9998,
                "positive": 0.0002,
                "score": 0.9998,
                "text": "The package arrived broken and nobody answered my emails."
            }
        ]
    },
    "type": "json"
}

Examples are the provider's own, not a call we made.

Opportunity insights

2 findings from measured data

  • Two independent sources agree

    The observed inflow implies about 6 calls at list price; the source counted 6 (factor 1). A transfer is still not a purchase, but the order of magnitude holds — this is the strongest monetisation signal in the catalogue short of a receipt feed.

    Peers with attributed inflows →

  • Category benchmark

    40 of 2,757 services (1.5%) in AI Models & Inference have attributable inflows; 902 have a source-measured call count. Median measured calls: 2.

    Rank this category by observed inflows →

What the provider says

Use when you need sentiment analysis, text sentiment or opinion mining of reviews, comments or headlines in English. Do not use for neutral or emotion labels, non-English text or aspect-level sentiment. Returns JSON with sentiment analysis of English text: a positive or negative label with a confidence score, from DistilBERT SST-2 on Workers AI, for one text or a batch of up to 20 for 0.004 USDC per call. Typical response time 1500 ms (p95). Category: Inference.

Quoted from x402 Bazaar · source record · read 2026-10-31

Facts and where they come from

Price
0.004 USDC per call Provider claim
Recorded value: 0.004 USDC per call.
Unit
per call
Protocol
x402, REST · transport: HTTP Provider claim
Auth
x402
Endpoint
https://x402-gateway.blackwoodstate8.workers.dev/v1/sentiment
Source
x402 Bazaar (Coinbase CDP) · Public discovery API (provider-published records)
Last checked
Not checked by us yet — the data is as the source published it
First seen
2026-10-24
Usage
6 calls · 3 unique payers in the 30 days before 2026-10-26. Measured by the x402 Bazaar, not by us and not by the provider.

Money, and what it actually proves

Verified revenue · 30d Unknown
Observed inflows · 30d $0.024
Attribution Exclusive
Receipt ledger Not connected

Observed transfers · confidence medium
Token transfers reached this service's own payout address. A transfer is not a purchase, and shared, refunded or unrelated transfers cannot be excluded.

Why revenue is “unknown”. A revenue figure needs a receipt: an amount a buyer actually paid for this service. We hold none for this entry, and we hold no funds at all. What we have instead is $0.024 arriving at the payout address in 30 days — that is volume, and a lower bound: transfers can be refunds, treasury moves, or payments for something else entirely.

Cross-check. At the published price the observed inflow would cover about 6 calls; the source counted 6. Two independent measurements of the same question — they never match exactly, because the effective price differs per call size and the address can also receive unrelated transfers.

Daily market statistics — the ledger view, day by day

No daily history has been archived for this service yet. Open the full daily history →

Payment rails

Base · upto · USDC
0xd25cA2Ea2a5017b4297157b0635E3FDBB26A326A
0.004 USDC
From source record
Base · exact · USDC
0xd25cA2Ea2a5017b4297157b0635E3FDBB26A326A
0.004 USDC
From source record

A payment rail is where the provider asks to be paid. It is not proof that anything was paid through it.

Provenance

One row per statement. “Verified” means we checked it ourselves and the finding is quoted. “Provider claim” means we read it in the provider's own record. “Not found” is a statement about our search, not proof of absence.

Statement Status What we found Source Checked
Endpoint Provider claim
https://x402-gateway.blackwoodstate8.workers.dev/v1/sentiment
Evidence

Als Resource-URL im Bazaar-Eintrag geführt.

 api.cdp.coinbase.com 2026-10-31
Input output Provider claim
Request/response examples published with the listing
Evidence

Beispiel-Ein- und -Ausgabe stammen aus dem Bazaar-Eintrag des Anbieters.

 api.cdp.coinbase.com 2026-10-31
Payment Provider claim
2 rails: Base · payee 0xd25cA2Ea2a5017b4297157b0635E3FDBB26A326A
Evidence

Aus den `accepts`-Einträgen: Netzwerk, Asset, Empfängeradresse und Betrag. Die Adresse ist die Grundlage der späteren On-Chain-Zuordnung; sie ist noch nicht durch eine eigene 402-Antwort bestätigt.

 api.cdp.coinbase.com 2026-10-31
Pricing Provider claim
0.004 USDC per call
Evidence

Atomic amount 4000 = 0.004 USDC per call on Base. 2 payment options published. Netzwerk: Base.

 api.cdp.coinbase.com 2026-10-31
Protocol Provider claim
x402 (HTTP 402 payment challenge)
Evidence

Im x402 Bazaar als zahlungspflichtige HTTP-Ressource gelistet (x402Version 2, Typ http).

 api.cdp.coinbase.com 2026-10-31
Provider Provider claim
x402-gateway.blackwoodstate8.workers.dev
Evidence

Die Ressource wird unter diesem Host im x402 Bazaar geführt; die Angaben stammen vom Anbieter.

 api.cdp.coinbase.com 2026-10-31
Usage Verified
6 calls / 3 unique payers in the last 30 days
Evidence

Source-reported usage from Coinbase x402 Bazaar, read on 2026-10-31. Letzter Aufruf laut Quelle: 2026-10-26T13:44:03.491Z. Aufrufe sind kein Umsatz.

 api.cdp.coinbase.com 2026-10-31

Endpoint checks

We have not called this endpoint yet. Until we do, everything above is what the source published — no more.

Tags

Inference Sentiment Analysis Text Sentiment Opinion Mining
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