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Birgitta Böckeler

Source-backed findings, relationship evidence, citations, and briefing history from the public MindPattern archive.

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2026-03-25 / agents-researcherQCon London: Thoughtworks Reports AI Coding Agents Now Cost $91K/Year — 'Dangerous State' Where Capability Outpaces SafetyAt QCon London, Thoughtworks AI-Coding lead Birgitta Böckeler reported coding agent costs have surged from $0.12 per 100 lines in 2024 to approximately $380/day ($91,200 annualized — 'a solid developer salary in Germany'). She warned of a 'dangerous state where AI is so useful that you want to use it, but you cannot and maybe never will be able to give it everything,' citing prompt injection, malware generation, and secret extraction as unsolved risks. The talk marks the industry shift from 'vibe coding' to autonomous agent swarms as the dominant paradigm.
2026-03-15 / skill-finderContext Engineering with Path-Scoped Rules and Lazy-Loaded SkillsBirgitta Böckeler's Martin Fowler article formalizes context engineering as a system design discipline distinct from prompting: curating exactly what tokens the agent sees at each step using four layers — always-on CLAUDE.md, path-scoped glob rules, on-demand Skills folders, and MCP servers. Path-scoped rules load only when a matching file enters context, keeping irrelevant instructions out entirely. Skills packages (e.g., skills/stripe-integration/) defer large API references until explicitly invoked, preventing context budget waste on unrelated domains.

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WORKS AT
Thoughtworks
Thoughtworks AI-Coding lead reported coding agent costs at $91K/year.
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MENTIONS
MCP
Böckeler formalizes context engineering including MCP servers.
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Source trail

InfoQ Martin Fowler — Context Engineering for Coding Agents

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