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Reticle

Tool Oct 21, 2026

A development SDK, local bridge and MCP server that gives coding agents runtime evidence and saved workflow replay for their own apps.

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Reticle's explanatory drawing traces a broken Pay button to a source line and passes a repair packet to a coding agent.
Author-published explanatory illustration of Reticle's evidence-to-source workflow. The payment failure and code are illustrative, not an independently reproduced test or a real customer incident. Source: Reticle Labs / Reticle repository
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Reticle embeds development instrumentation inside an app and exposes its observations to coding agents through MCP. The project describes verdicts backed by network responses, console events, application state and source locations, plus recorded flows that replay without another model-driven traversal.

The SDK, core and engine use Apache-2.0. The server, CLI and spec runner are source-available under FSL-1.1-ALv2, with each version converting to Apache-2.0 after two years. Local verification needs no account; the optional hosted Harness and linked dashboard introduce separate accounts, credits and data synchronization. The project’s framework documentation distinguishes end-to-end verdict tests from installation-only checks and unverified wiring.