Research: pydantic-ai-harness
Cached research evidence for pydantic-ai-harness (not authority).
Purpose
Section titled “Purpose”Extend Pydantic AI agents with harness capabilities (e.g. Code Mode sandboxed run). From pydantic/skills: Logfire + Pydantic AI plugins and cross-agent SKILL.md files. Supports Claude Code, Codex, Cursor via plugins + standalone.
Harness Coverage
Section titled “Harness Coverage”Target agents: antigravity, claude-code, codex, crush, cursor, gemini-cli, github-copilot, grok, opencode.
Trust And Risks
Section titled “Trust And Risks”trust_tier=needs-inspection; status=inspect-then-install; provenance=verified-install-command. Web-aug: github.com/pydantic/skills (MIT, active Pydantic team, 80+ stars, plugins/ + skills/ dir, MCP for Logfire, requires LOGFIRE_TOKEN for full use). Official; telemetry surface.
Install Prerequisites
Section titled “Install Prerequisites”For plugins: claude/codex/cursor marketplace add pydantic/skills then install specific. Standalone: npx skills add pydantic/skills —skill pydantic-ai-harness status=inspect-then-install.
Upstream Maintainer
Section titled “Upstream Maintainer”pydantic/skills (official Pydantic)
Comparable Alternatives
Section titled “Comparable Alternatives”Other observability (otel, langsmith), agent framework skills (langchain, crewai).
> 2026 web + pydantic README.