Working Notes on Agent Systems/Brad Zhang

@teach_fireworks / X longform

Why is this Harness open source project worth using? Claude Code's Skill ecosystem is r...

Why is this Harness open source project worth using? Claude Code's Skill ecosystem is rapidly expanding (official plugin marketplace + community skill). But "Claude can't rememb...

March 28, 2026 Β· 2 min read

Why is this Harness open source project worth using?

Claude Code's Skill ecosystem is rapidly expanding (official plugin marketplace + community skill).

But "Claude can't remember things" is a common pain point for all skill users.

That's why the Harness project gained rapid recognition and spread after it was proposed recently.

Recently, ClaudeCode has launched the Memory function, which solves the memory problem between CC and users to a certain extent.

However, it is not friendly enough in actual testing, and the collaboration mechanism between agent.md and memory seems not very flexible.

I will introduce it in another article.

Friction between Agent, model and operating environment As model capabilities improve, Agent concepts become richer and larger.

Simple context engineering is not enough to support high-quality Agents, and a lot of dark knowledge cannot be stably and continuously transferred to agents and large models.

Fireworks-skill-memory is an open source solution that uses Harness engineering concepts and best practices (rather than hack prompts) to solve this problem: does not modify the model, does not intercept user input, only works on the two life cycle hooks exposed by Claude Code, and is extremely restrained, not overusing the file system to pollute the context of CC.

This is the correct posture to expand the capabilities of the AI ​​agent.

πŸ”— Address: ⭐ If you find it useful, please give it a star to support it

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FORMATTOPICCAPABILITYMARKETcoverscoverscoverscoverssignalssignalssignalssignalsFORMATlongform noteTOPICagentsTOPICharness engineeringTOPICai workbenchesTOPICmemoryCAPABILITYagent workflowCAPABILITYharness engineeringCAPABILITYAI-native workbenchCAPABILITYevaluationCAPABILITYtechnical distribution
Mermaid outline
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Built from summary and key paragraph positions

Why is this Harness open source project worth using? Claude Code's Skill ecosystem is...THESISWhy is this Harnessopen source projectworth using? ClaudeCode's Skill ecosystemSIGNALWhy is this Harnessopen source projectworth using?OPERATORI will introduce it inanother article.IMPLICATIONπŸ”— Address: ⭐ If youfind it useful, pleasegive it a star tosupport it
Mermaid outline
flowchart LR
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  signal["Why is this Harness open source project worth using?"]
  operator["I will introduce it in another article."]
  implication["πŸ”— Address: ⭐ If you find it useful, please give it a star to support it"]
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  signal -->|develops| operator
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