Archive

A hand-drawn line chart on dot-grid paper with a steel ruler laid across it: reading exact values off a chart takes both the drawn curve and a precise measuring instrument.

mcp· ai-agents· llm

Extract Chart Data From PDFs: An MCP Tool That Won't Guess

Exact numbers come from the server's geometry. The judgment calls get handed back to the LLM.

September 26, 2026 · 11 min

A bronze Lady Justice statue, blindfolded, holding empty balance scales: a judge that cannot see its own bias is one you have to measure from the outside.

ai-agents· llm· observability· python

Cut LLM Judge Cost Without Adding Bias

Two shortcuts cut my judge calls. One kept the verdicts. The other quietly flattered them.

September 19, 2026 · 12 min

Aerial view of Sigiriya, a ruined fortress on a rock plateau standing far above flat jungle in every direction. The vantage this post is about: you cannot see the shape of the terrain you are standing in until you get outside it.

rag· ai-agents· llm· bedrock

How Amazon Bedrock Helped Me Make My RAG Better

Eight months of self-testing missed two bugs. Four cents of Bedrock found them.

September 12, 2026 · 8 min

A dune coastline at sunset, the shoreline running away to a horizon you cannot see the end of. How far you get depends on what you are carrying, not on the map.

ai-agents· llm· mcp· rag

How to Send PDFs Over 100 Pages to Claude's API

Every page cap is a limit on the request, not the document. So stop sending the document.

September 06, 2026 · 17 min

A small green grasshopper in sharp focus on the edge of a leaf while the surrounding foliage blurs into darkness: the one bug that stays hidden until you look at exactly the right surface.

mcp· python· ai-agents· observability

How to Test and Debug a Python MCP Server

The Inspector, in-process pytest, and the stdio traps that silently break a passing server.

September 05, 2026 · 11 min

A Tokyo street at night lined with vertical Japanese neon signs, columns of characters running top to bottom, standing for the column order a tategaki extractor must reconstruct.

rag· ai-agents· llm

How I Fixed Vertical Japanese PDF Extraction

The text layer is already there. It just comes out top-to-bottom, right-to-left, and in the wrong order. The fix is g...

August 29, 2026 · 11 min

An open honey jar and a dripping honey dipper on raw honeycomb: the honeypot, a trap that looks like an invitation.

ai-agents· llm· security

WebMCP in Production: What I Shipped and What I Removed

Six agent-callable tools went live on this blog. Three survived. The honeypot is why.

August 22, 2026 · 7 min

Aerial view of a braided glacial river: independent channels merging into one flow, the way per-document rankings fuse into one cross-corpus result. Ranks survive that merge; raw BM25 scores do not.

rag· ai-agents· mcp· llm

Cross-Document Retrieval for AI Agents Without a Vector Database

One question across 100 PDFs, one ranked list, all in SQLite. How it works, and where it stops.

August 15, 2026 · 12 min

Someone standing at a wall of colored sticky notes, moving one by hand: the triage board as it looks before an agent can work it.

mcp· ai-agents· llm· production-systems

Redmine MCP Server: Give AI Agents Live Project Data

An open-source MCP server for Redmine. 51 tools, OAuth2, read-only mode, and a live triage board.

August 08, 2026 · 8 min

A library wall packed with books of every size and color: a working knowledge base organized by nothing more than which shelf each volume sits on and what its spine says.

mcp· ai-agents· rag· llm

A Knowledge Base Is Just a Folder

No pipeline, no vector store. Topic folders, a warm habit, a generated catalog, honest coverage.

August 01, 2026 · 10 min

Bundled black conduit pipes fanning out from a single trunk up the side of a brick building, the infrastructure plumbing of a fetch-extract pipeline.

ai-agents· llm· blueclaw· python

AI Agent Cloudflare 403: Two Libraries That Fix It and Cut Tokens 90%

Two Python libraries fix the 403 and the 80k-token HTML at the same time.

July 25, 2026 · 9 min

A person on a bench reads a multi-column newspaper that hides their face, standing for a reader who cannot see how the column layout is being scrambled.