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Alex

Building production-ready, open-source AI pipelines where state machines, LLM failover, and real quality gates matter more than prompts.

Joined Joined on  Personal website https://github.com/alexar76 twitter website
We stopped reading 2,195 MCP servers for three days. Another team's log is how we found out
alexar76 profile
Alex

We stopped reading 2,195 MCP servers for three days. Another team's log is how we found out

#mcp #ai #opensource #devops
2
Comments
7 min read

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An honest x402 seller earned $0.18 in two weeks and shut down. We now host sellers like it for free.
alexar76 profile
Alex

An honest x402 seller earned $0.18 in two weeks and shut down. We now host sellers like it for free.

#ai #agents #webdev #opensource
2
Comments
5 min read
Two public records of MCP tool definitions, one day, 23,190 servers: where they agree
alexar76 profile
Alex

Two public records of MCP tool definitions, one day, 23,190 servers: where they agree

#mcp #ai #security #opensource
4
Comments 6
5 min read
We built a marketplace for AI agents. Sellers told us the integration wasn't worth it.
alexar76 profile
Alex

We built a marketplace for AI agents. Sellers told us the integration wasn't worth it.

#ai #webdev #startup #architecture
Comments 13
6 min read
Our MCP probe missed the paid default
alexar76 profile
Alex

Our MCP probe missed the paid default

#mcp #security #python #testing
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Comments 3
7 min read
Why our MCP server stopped trusting localhost by default
alexar76 profile
Alex

Why our MCP server stopped trusting localhost by default

#mcp #security #python #opensource
3
Comments
6 min read
Same MCP version, different tools: what two independent captures revealed
alexar76 profile
Alex

Same MCP version, different tools: what two independent captures revealed

#mcp #security #opensource #devtools
4
Comments
6 min read
We Improved WARDEN's Warnings. Twelve Rechecks Changed No Choices.
alexar76 profile
Alex

We Improved WARDEN's Warnings. Twelve Rechecks Changed No Choices.

#mcp #security #ai #opensource
1
Comments
7 min read
A copyable MCP tool-cost check for CI, with passing and failing examples
alexar76 profile
Alex

A copyable MCP tool-cost check for CI, with passing and failing examples

#mcp #python #devops #opensource
Comments
5 min read
Five Wallets Paid an x402 Seller. What Can We Say About Demand?
alexar76 profile
Alex

Five Wallets Paid an x402 Seller. What Can We Say About Demand?

#mcp #blockchain #opensource #ai
Comments
5 min read
We Kept WARDEN's 8/10 Thresholds and Fixed Its Credential Index
alexar76 profile
Alex

We Kept WARDEN's 8/10 Thresholds and Fixed Its Credential Index

#mcp #security #opensource #ai
Comments
5 min read
We rechecked 292 failing MCP packages. 12 newer releases now list tools.
alexar76 profile
Alex

We rechecked 292 failing MCP packages. 12 newer releases now list tools.

#mcp #python #opensource #ai
Comments
6 min read
We attacked our own MCP firewall with its source code open. 14 of 17 attacks got through; now 2 of 23 do

Shows a rapid one-day security hardening cycle
alexar76 profile
Alex

We attacked our own MCP firewall with its source code open. 14 of 17 attacks got through; now 2 of 23 do

#mcp #security #ai #opensource
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Comments 53
10 min read
MCP servers edit the instructions your agent reads. WARDEN 0.18 shows which words changed
alexar76 profile
Alex

MCP servers edit the instructions your agent reads. WARDEN 0.18 shows which words changed

#mcp #security #ai #opensource
Comments 7
8 min read
Our AI agent bought an eSIM for its owner, then got the money back. Every step is on chain.
alexar76 profile
Alex

Our AI agent bought an eSIM for its owner, then got the money back. Every step is on chain.

#showdev #ai #agents #x402
1
Comments
5 min read
An AI Agent Bought a Domain and Connected It to Vercel for $1.54
alexar76 profile
Alex

An AI Agent Bought a Domain and Connected It to Vercel for $1.54

#showdev #webdev #devops #ai
1
Comments
4 min read
45% of remote MCP servers changed their tool definitions in four weeks. The log is now a dataset.
alexar76 profile
Alex

45% of remote MCP servers changed their tool definitions in four weeks. The log is now a dataset.

#mcp #security #opensource #dataset
1
Comments 3
4 min read
Three x402 sellers compared notes. The routes answer; nobody comes back to buy.
alexar76 profile
Alex

Three x402 sellers compared notes. The routes answer; nobody comes back to buy.

#x402 #ai #agents #opensource
Comments 6
4 min read
What an MCP server's tool list costs: we counted the tokens of 34,374 of them
alexar76 profile
Alex

What an MCP server's tool list costs: we counted the tokens of 34,374 of them

#mcp #ai #llm #opensource
1
Comments 3
5 min read
A period bypassed our scanner. A reused IP confused our observer.
alexar76 profile
Alex

A period bypassed our scanner. A reused IP confused our observer.

#security #mcp #ai #testing
1
Comments
6 min read
A flow guard for MCP: what AgentDojo measured, and what our security audit found
alexar76 profile
Alex

A flow guard for MCP: what AgentDojo measured, and what our security audit found

#security #ai #claudecode #mcp
Comments 2
10 min read
We re-ran our MCP scanner comparison on 14,933 npm and PyPI tool lists, in gVisor, with two more scanners
alexar76 profile
Alex

We re-ran our MCP scanner comparison on 14,933 npm and PyPI tool lists, in gVisor, with two more scanners

#security #mcp #ai #opensource
1
Comments 6
9 min read
We installed 12,915 MCP servers and started each one. 41% never answered.
alexar76 profile
Alex

We installed 12,915 MCP servers and started each one. 41% never answered.

#mcp #ai #security #opensource
6
Comments 23
8 min read
We ran three MCP security scanners on a tool-poisoning benchmark and 986 real servers
alexar76 profile
Alex

We ran three MCP security scanners on a tool-poisoning benchmark and 986 real servers

#security #mcp #ai #opensource
1
Comments
7 min read
One key for an agent's tool calls: a prepaid USDC balance on an MCP connection
alexar76 profile
Alex

One key for an agent's tool calls: a prepaid USDC balance on an MCP connection

#mcp #ai #agents #web3
1
Comments 3
1 min read
We tried to buy one call from 100 x402 sellers. Most delivered. Almost nobody is buying.
alexar76 profile
Alex

We tried to buy one call from 100 x402 sellers. Most delivered. Almost nobody is buying.

#x402 #web3 #ai #api
1
Comments 29
6 min read
Two strangers took the job. The one that lied was paid nothing.
alexar76 profile
Alex

Two strangers took the job. The one that lied was paid nothing.

#ai #web3 #opensource #api
6
Comments 6
7 min read
Four filings, zero merges: where three agents actually sit this week
alexar76 profile
Alex

Four filings, zero merges: where three agents actually sit this week

#showdev #mcp #opensource #webdev
1
Comments
3 min read
One call orders the subcontract.
alexar76 profile
Alex

One call orders the subcontract.

#opensource #tutorial #api #ai
Comments
4 min read
Price the chain before hop three bills you.
alexar76 profile
Alex

Price the chain before hop three bills you.

#opensource #tutorial #webdev #ai
2
Comments
5 min read
The receipt is seven fields. The hub can wait.
alexar76 profile
Alex

The receipt is seven fields. The hub can wait.

#opensource #security #tutorial #webdev
1
Comments
5 min read
Catalogue process. Snapshot memory.
alexar76 profile
Alex

Catalogue process. Snapshot memory.

#showdev #opensource #ai #security
1
Comments
4 min read
11,749 MCP servers answered tools/list. The signed log still says yesterday.
alexar76 profile
Alex

11,749 MCP servers answered tools/list. The signed log still says yesterday.

#showdev #security #ai #opensource
Comments
5 min read
Attack anything. Risk nothing. — every exploit lands on a throwaway fork
alexar76 profile
Alex

Attack anything. Risk nothing. — every exploit lands on a throwaway fork

#showdev #security #web3 #opensource
1
Comments
5 min read
Emberline was one fire desk. Then we built four more — and still no risk score.
alexar76 profile
Alex

Emberline was one fire desk. Then we built four more — and still no risk score.

#showdev #beginners #webdev #ai
1
Comments
4 min read
I opened a live agent marketplace. The receipts were the product.
alexar76 profile
Alex

I opened a live agent marketplace. The receipts were the product.

#showdev #ai #opensource #webdev
1
Comments
5 min read
I built a self-hosted alternative to Bolt.new — except it's a whole AI dev team, not a chat box
alexar76 profile
Alex

I built a self-hosted alternative to Bolt.new — except it's a whole AI dev team, not a chat box

#showdev #opensource #ai #llm
Comments
2 min read
181 more tools for your LangGraph agent — in two lines
alexar76 profile
Alex

181 more tools for your LangGraph agent — in two lines

#showdev #python #langchain #opensource
Comments
3 min read
AICOM is the factory. AIMarket is the economy it ships into.
alexar76 profile
Alex

AICOM is the factory. AIMarket is the economy it ships into.

#showdev #opensource #ai #webdev
1
Comments
5 min read
We didn't build another agent framework. We built the room they work in.
alexar76 profile
Alex

We didn't build another agent framework. We built the room they work in.

#showdev #opensource #ai #webdev
Comments
4 min read
Pretty flood maps are liars. One live gauge. Zero flood pins. We refused to paint the county.
alexar76 profile
Alex

Pretty flood maps are liars. One live gauge. Zero flood pins. We refused to paint the county.

#showdev #opensource #webdev #ai
1
Comments
3 min read
A loop repaired a live HTTP service in 2m 30s. Nobody pressed start.
alexar76 profile
Alex

A loop repaired a live HTTP service in 2m 30s. Nobody pressed start.

#showdev #devops #ai #security
Comments
5 min read
We don't decorate the agent age. We declare it.
alexar76 profile
Alex

We don't decorate the agent age. We declare it.

#showdev #webdev #opensource #writing
Comments
2 min read
Our AI factory built a safety product — and deliberately left the LLM out of it
alexar76 profile
Alex

Our AI factory built a safety product — and deliberately left the LLM out of it

#showdev #ai #startup #webdev
Comments
4 min read
Green pins can lie. I built a detective game on live Hub telemetry instead of a quiz.
alexar76 profile
Alex

Green pins can lie. I built a detective game on live Hub telemetry instead of a quiz.

#showdev #gamedev #ai #opensource
Comments
3 min read
We scanned 1,108 public MCP servers. WARDEN blocked 50 — only 4 were real.
alexar76 profile
Alex

We scanned 1,108 public MCP servers. WARDEN blocked 50 — only 4 were real.

#showdev #security #ai #opensource
Comments
5 min read
Per-file scanners said PASS. A contract graph said FAIL.
alexar76 profile
Alex

Per-file scanners said PASS. A contract graph said FAIL.

#showdev #security #web3 #opensource
Comments
4 min read
I wanted a signed AIMarket provider without the monorepo. One CLI later, I had one.
alexar76 profile
Alex

I wanted a signed AIMarket provider without the monorepo. One CLI later, I had one.

#showdev #python #ai #opensource
Comments
4 min read
I connected one MCP server. It searched a live marketplace and returned a signed weather receipt.
alexar76 profile
Alex

I connected one MCP server. It searched a live marketplace and returned a signed weather receipt.

#showdev #mcp #ai #beginners
Comments
3 min read
I unzipped the sample fire brief. The globe was never the product.
alexar76 profile
Alex

I unzipped the sample fire brief. The globe was never the product.

#showdev #beginners #webdev #ai
Comments
3 min read
Pretty fire maps are liars. I wanted a file I could actually show someone.
alexar76 profile
Alex

Pretty fire maps are liars. I wanted a file I could actually show someone.

#showdev #beginners #webdev #ai
Comments
3 min read
I asked for fire evidence. The API returned 152 thermal detections — and refused to draw a perimeter.
alexar76 profile
Alex

I asked for fire evidence. The API returned 152 thermal detections — and refused to draw a perimeter.

#showdev #opensource #ai #webdev
Comments
3 min read
I ran a live agent invoke. Here's a URL you can verify without trusting our site.
alexar76 profile
Alex

I ran a live agent invoke. Here's a URL you can verify without trusting our site.

#showdev #opensource #ai #webdev
Comments
3 min read
Five doors into a live agent economy — no monorepo tour
alexar76 profile
Alex

Five doors into a live agent economy — no monorepo tour

#showdev #opensource #ai #webdev
Comments
4 min read
The federation emitted a signal. Find the cause — a detective game on live Hub telemetry
alexar76 profile
Alex

The federation emitted a signal. Find the cause — a detective game on live Hub telemetry

#showdev #gamedev #ai #opensource
Comments
4 min read
We put a red team inside our agent economy. It finds bugs, signs them, and cannot pay itself.
alexar76 profile
Alex

We put a red team inside our agent economy. It finds bugs, signs them, and cannot pay itself.

#showdev #security #ai #opensource
Comments
6 min read
I treat my agent stack like an art object — and the 3D isn't decoration
alexar76 profile
Alex

I treat my agent stack like an art object — and the 3D isn't decoration

#showdev #opensource #ai #webdev
Comments
5 min read
Shrek owned the swamp. POUCHPO owns the payout.
alexar76 profile
Alex

Shrek owned the swamp. POUCHPO owns the payout.

#showdev #ai #iot #opensource
Comments
2 min read
Your agent paid for the weather. The sensor was lying. Who keeps the money?
alexar76 profile
Alex

Your agent paid for the weather. The sensor was lying. Who keeps the money?

#showdev #ai #opensource #iot
Comments
6 min read
I made my API discoverable to AI agents — and got it paid per call — in 15 minutes
alexar76 profile
Alex

I made my API discoverable to AI agents — and got it paid per call — in 15 minutes

#tutorial #ai #opensource #agents
Comments
4 min read
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