NativePort

Superpowers for your agent

Sort thousands in minutes

A vast old post-office mailroom with a wall of hundreds of wooden pigeonholes full of neatly sorted envelopes, and an empty sorting stool in front with a red superhero cape with a squiggly N draped over it and a plush-sized cloth eye mask on the sorting table

Create your account New accounts get $1 of credit.

Let your agent sort thousands of products, reviews or posts by your own rules, and know what the whole pile says in minutes.

We power all agents

Muse
OpenAI
Claude
Hermes
OpenClaw
Instinct
and more

Any agent that can connect an MCP server uses the same NativePort key.

What your agent gets

Yes or noThe chance each item matches your rule, like “is this a complaint?”
Pick oneOne label per item from your own list, with the odds of every option
ScoreA rating on your own scale, from calm to furious or short to keyword soup
UnsureEvery answer carries a confidence, so the close calls come back to you
SpeedAbout 34 items a second, for a few cents per 1,000
SourcesAmazon search results, Reddit posts, Steam reviews, or any list you give your agent

Sample analysis

Classification of 1,845 Amazon Electronics Reviews

1 / 8

01 · Where and whatAmazon US · 20 best sellers · Sep 26, 2026

1,845 Amazon reviews, sorted in 54 seconds

1,845reviews of the 20 best-selling electronics, the newest at each star level

9,225typed answers: 5 questions per review, one call per review

54 sto sort them all, 32 calls at a time

Question to the classifier	Type	Answers
What is the review mainly about?	Pick one	The product · delivery · the seller or service · other
What is the main complaint?	Pick one	Stopped working · defective · setup · fit · sound · 5 more
Did they get it free or discounted for the review?	Yes or no	The chance it's yes, 0 to 1
Would they buy it again or recommend it?	Yes or no	The chance it's yes, 0 to 1
How strongly do they feel?	Score	Calm · clearly pleased or annoyed · very strong

Amazon's Best Sellers in Electronics, ranks 2 to 22: a subscription plan (#1) and a cushion kit with no ratings (#17) set aside. Up to 20 reviews per star level per product; AirPods 5 had 17, Oura Ring 5 sizing kit had 57, Olcorife power strip had 71 in all. Written Jun 2025 to Sep 2026. The classifier read the words, not the stars.

02 · Speed and costThe whole run

34 reviews a second, 4 cents per 1,000

34.2reviews sorted per second (1,845 in 54 s), 32 calls at a time

$0.038per 1,000 reviews, 5 questions each. Answers are free: it bills the 858 tokens it reads per review

11×cheaper than GPT-5 mini on the same questions ($0.43 per 1,000, at 3.5 reviews per second, 6 calls at a time)

Read Amazon: one run, 1,849 results (1,845 reviews, 4 empty) in 84 seconds, $0.99.
Sort: 1,845 calls, 1.58 million tokens read, 54 seconds, $0.07.
Check: 30 GPT-5 mini calls on 300 reviews, 86 seconds, $0.13.

Run on Sep 26, 2026 through NativePort, at catalog prices. Reading the reviews cost 14× as much as sorting them. Sorted a second time: 54 s, 0 retries.

03 · Who gets the blameWhat each review is mainly about

1-star reviews blame the product 92% of the time

The productDelivery or packagingThe seller, returns or serviceOther

1 star · 381

92%

2 stars · 352

97%

3 stars · 353

95%

4 stars · 364

94%

5 stars · 395

97%

31 of 381 one-star reviews (8%) blame something else: 22 the seller, a return or customer service, 9 the delivery or the box.

"Package was not packed with any care. It was not cushioned and the tablet was able to be shaken all around…"

1 star · Fire HD 10 tablet

"Received order, but would not work with old tv and returned it. Was automatically sent another without requesting it. Sent back again and denied refund."

1 star · Roku Streaming Stick HD

What a review is about is the classifier's reading (inferred). Counting only the 354 one-star reviews it was sure about, 19 (5.4%) blame delivery or the seller.

04 · What goes wrong1- and 2-star reviews, by kind of product

Power strips die (41%), remotes won't pair or set up (31%), earbuds quit (24%)

Kind · products	1-2 star reviews	Top complaint	Share
Ring sizing kit · 1	27	Fit or comfort	70%
Power strips · 3	105	Stopped working	41%
TV remotes · 2	80	Won't pair or set up	31%
Streaming sticks · 4	160	Software, apps and ads	26%
Tracker · 1	40	Tracking accuracy	25%
Earbuds and headphones · 7	241	Stopped working	24%
Tablets · 2	80	Software, apps and ads	23%

All 733 one- and two-star reviews: stopped working 21%, defective on arrival 16%, won't pair or set up 16%, sound or picture 9%.

Share of each kind's 1- and 2-star reviews (inferred). "Software, apps and ads" and "tracking accuracy" come from a second question asked of the reviews whose complaint came back "other" (slide 05).

05 · A second questionThe 295 "other" complaints, asked again

Fire devices: 1 in 3 unhappy reviews is about software

Software, apps and ads · share of 40 1-2 star reviews each

Fire TV Stick HD40%

Fire HD 10 tablet37.5%

Fire TV Stick 4K Plus32.5%

Fire TV Stick 4K Select22.5%

Roku Streaming Stick HD7.5%

iPad 11-inch (A16)7.5%

The first list had no option for it, so it came back as "other". A second question on those 295 reviews took 8 seconds and $0.006; GPT-5 mini gave the same answer on 89 of 100.

"Amazon has blocked users from downloading unknown apps. Makes no sense."

2 stars · Fire TV Stick HD

"Slow to load, stalls then random scrolling, freezes sometimes."

1 star · Fire TV Stick 4K Select

Inferred. Fire devices = the three Fire TV Sticks and the Fire HD 10 tablet: 53 of 160 (33.1%). Roku stick and iPad: 6 of 80 (7.5%). Counted only where the first complaint came back "other", so these are floors: asked directly of the same reviews, the classifier and GPT-5 mini both find more software complaints on every product, and the most on the Fire devices.

06 · Product by productEarbuds and headphones, 1-2 star reviews

Six earbuds and headphones, three different top complaints

Product · 40 reviews each	Top complaint	Share
Apple EarPods (USB-C)	Stopped working	45%
JBL Vibe Beam 2 earbuds	Sound quality	42.5%
AirPods 4	Fit or comfort	35%
TOZO A1 earbuds	Stopped working	30%
AirPods Pro 3	Fit or comfort	25%
Soundcore Q20i headphones	Sound quality	22.5%

"They’re too big and they fall out of my ears."

1 star · AirPods 4

"I was surprised how poor the sound quality is considering it’s a JBL product."

2 stars · JBL Vibe Beam 2 earbuds

"Left side stopped working after a month"

2 stars · Apple EarPods (USB-C)

Top complaint in each product's 1- and 2-star reviews (inferred). AirPods 5 had 1 and is left out.

07 · Free, and would buy againBy star rating

0 of 395 five-star reviewers say it was free or discounted

0 of 395five-star reviews say they got it free or discounted for the review; 1 of all 1,845, a one-star reviewer who won theirs

1review of 1,845 carries Amazon's Vine badge, its program that gives products to reviewers

19%of five-star reviews say they'd buy it again or recommend it (74 of 395); 0 of 381 one-star

Says they'd buy it again or recommend it

5 stars · 39518.7%

4 stars · 3648.8%

3 stars · 3531.4%

2 stars · 3520.3%

1 star · 3810%

Very strong feelings: 100 of 381 one-star reviews (26%), 37 of 395 five-star (9%).

In the reviewers' own words (inferred); a sale price or a gift doesn't count. The Vine badge is Amazon's label. GPT-5 mini found 0 free or discounted in its 299 as well.

08 · Checked300 random reviews, and a second run

GPT-5 mini agreed on 96% of topics and 91% of sure complaints

Same answer as GPT-5 mini, 299 reviews

Free or discounted?100%

What is it about?96%

Buy again?83.3%

Main complaint?78.3%

How strongly?71.2%

How strongly: 99% within one level.

Main complaint, confidence	Reviews	Same as GPT-5 mini
Sure, 0.8 or more	1,310 · 71%	91% of 208
Middle, 0.5 to 0.8	368 · 20%	53% of 62
Close call, under 0.5	167 · 9%	38% of 29

Sorted twice: same main complaint on 98.3% of the 1,845, same topic on 99.7%.
The stars agree: 358 of 395 five-star reviews got "no complaint", 377 of 381 one-star got a named one.

GPT-5 mini answered the same five questions, 10 reviews per call; it skipped 1 of 300. Free or discounted: both said no to all 299. The close calls come back to you: 535 complaint answers under 0.8.

Price

Pay per call

Call	Price
Sort an item, any number of questions	$0.04431 per million tokens read, answers free
Amazon search results page	$0.002638 per call
Amazon reviews	$0.0005275 per review
Read a public page	$0.000158 per credit (1 credit; 25 for Reddit)
Second opinion from GPT-5 mini	$0.26375 per million tokens in, $2.11 out

Billed per call at the price shown. Full breakdown: pricing.

Questions

What is NativePort?

An MCP for instant access to 30+ AI agent tools. With a single account, your agent gets all of them, and you pay per call.

What happens to my NativePort key?

You connect NativePort to your agent once; the key never goes in the chat, and your agent uses it only to call NativePort.

What does it read?

Only the items you give it or ask it to fetch: public listings, reviews, posts and comments, or a list you paste. Each item goes out with your questions and comes back with typed answers. It won't sort people by health, religion or other personal traits, or build a profile of a private person.

Which agents can use it?

Any agent that can connect an MCP server: Muse, OpenAI, Claude, Hermes, OpenClaw, Instinct and others, with the same NativePort key.

Give your agent this superpower

Create your account

New accounts get $1 of credit.