{"name":"Pi","tagline":"Minimal open-source coding-agent harness — TUI, SDK, RPC, BYOK, customize instead of feature-bloat.","url":"https://pi.dev","category":"coding","pricing":"free","price_note":"CLI/SDK free; you pay the model provider; packages install from npm or git","free_tier":true,"open_source":true,"api":true,"self_host":true,"model_routing":"byok","verdict":"situational","verdict_text":"Mario Zechner's harness: small prompt, tree-structured sessions, 15+ providers, and a bias toward \"build the feature as an extension\" instead of shipping MCP/subagents/plan mode. Powerful if you like assembling; empty if you wanted Cursor. Not a Ship without using it on a repo.","limitations":["No bundled MCP, sub-agents, or permission UI — by design, you add them.","Quality is 100% the model you authenticate.","Docs and packages assume comfort with git/npm and a terminal.","Not Inflection Pi and not π the number — this is pi.dev / pi-mono."],"strengths":["Minimal open-source harness with TUI, SDK, and RPC in one repo.","Supports 15+ providers and is built for extension over feature-bloat.","Free CLI/SDK; you only pay the model provider you authenticate."],"use_for":["Developers who want to assemble and customize their own coding agent.","Terminal-first workflows comfortable with git/npm and BYOK setup."],"skip_when":["You want bundled MCP, sub-agents, or permission UI out of the box.","You need polished GUI docs and a guided onboarding experience.","You are not willing to bring and manage your own model keys."],"receipts":["https://pi.dev","https://github.com/badlogic/pi-mono"],"affiliate":"none","evidence_tier":"source-verified","momentum":"blueshift","featured":false,"data_sensitivity":{"trains_on_inputs":"unknown","local_processing":true},"last_verified":"2026-08-19","observed_by":"whysanesanders","slug":"pi","canonical_url":"https://noemium.com/tools/pi/","attribution":"Noemium catalog data is licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). See https://noemium.com/method/ for how entries are verified."}