ContextBridge
1 known investors
AI memory architecture platform improving developer productivity.
Also known as ContextBridge AI
Founders & leadership
Investors · 1
Company profile
researched Aug 2026ContextBridge (ContextBridge AI) is a developer tools company building software for teams working with AI coding agents. Its stated focus is precision steering of coding agents and security of software dependencies. The company's lead product, PlanBridge, is an open-source, local-first tool that opens a coding agent's markdown plans, specs, or long messages in a browser window running on localhost, where the developer can select text and leave inline comments that are returned to the agent as markdown. PlanBridge integrates with Claude Code (via a plugin hook on ExitPlanMode plus /planbridge-open and /planbridge-last skills) and Codex (via a Stop hook and equivalent skills), and can be used with any agent able to run a command and read a structured result. It is installed through a shell script from the company's downloads domain for macOS and Linux, is MIT licensed with public source, requires no account, and uploads no content.
A second product, PatchWave, is announced as a waitlist offering that aims to auto-merge Dependabot pull requests using static analysis and AI, with the remainder reviewed manually. A third product, ContextBot, examined a team's pull requests and merged commits to extract coding conventions and open reviewable pull requests updating agent context files such as CLAUDE.md and AGENTS.md; it was retired in May 2026. A separate profile of the company describes an MCP gateway that proxies MCP servers and gives an LLM a search engine for tools, positioned to reduce token waste from MCP tool definitions and support connecting many MCP servers without overloading the model.
Founding story
ContextBridge was co-founded by Donnie Flood (CEO), Josh Carver (CTO), and Ben Limmer (Chief Architect). Flood's background spans adtech, edtech, and construction tech; Carver has led engineering teams across AI, product, and developer productivity; Limmer has worked on architecture and cloud systems for companies from startup through IPO. The company's stated thesis is that because AI amplifies and automates, precision communication and security are non-negotiable.
Business model
ContextBridge distributes developer tooling directly to engineers. PlanBridge is described as free and open source (MIT licensed, public source), used as an entry point, while PatchWave is a not-yet-released product gated behind a waitlist. A company profile positions the offering as enterprise software at seed stage.
No pricing is disclosed for PatchWave or the MCP gateway; PlanBridge is stated to be free and open source.
Traction
PlanBridge is available now and open source, with published testimonials from engineers and engineering leaders at several companies; PatchWave is pre-release with a waitlist. PatchWave's stated target is safely auto-merging 65% of Dependabot pull requests.
Latest developments
ContextBot was retired in May 2026, and the company directs users to its current projects, PlanBridge and PatchWave. Blog posts in April and May 2026 covered the plan-review approach behind PlanBridge and a multi-part series on agent orchestration readiness.
▸Full profile — market position, technology, go-to-market, geography, history
Market position
A small, early-stage company (1-10 employees, seed stage per a startup database profile) in the AI developer-tools segment. Its listed peer set in that profile includes Obot AI, Desktop Commander, AnySource, Barndoor AI, and Gaprio Labs.
Positioning centers on local-first operation and privacy — content stays on the developer's machine, no account is required, and no remote service intermediates the agent — combined with inline, line-level review ergonomics comparable to a pull request review rather than a single terminal text box. The MCP gateway is positioned on token-waste reduction of 90%+ versus loading full MCP tool definitions.
Technology
PlanBridge runs as a local CLI process ("contextbridge") that takes markdown from stdin or a local file, renders it in a localhost browser UI for inline commenting, and writes the resulting markdown back to stdout for the agent. It uses standard agent extension points — a Claude Code plugin hook and a Codex Stop hook — and includes an uninstall command that removes harness entries. There is no remote service between the agent and the user's content. ContextBot applied signal extraction over pull request reviews and merged diffs to generate context-file updates delivered as pull requests. The MCP gateway described in a third-party profile proxies MCP servers behind a secure gateway with a 1-click install and exposes tool search to the LLM instead of loading all tool definitions.
Go-to-market
Direct distribution of a free, open-source CLI installed via a one-line shell command, with documentation and quickstart guides, plus waitlists for unreleased products. The company publishes a blog and solicits inbound contact from others building at the intersection of AI and developer tools. Its site features named testimonials from engineers at companies including Stripe, Ibotta, Homebound, Gamechanger, Stellarus, Fanstake, LeadLabs, and Parallax.
Software engineers and engineering teams using AI coding agents such as Claude Code and Codex, including individual developers and engineering organizations managing dependency updates and agent context files.
Geography
Headquartered in Denver, Colorado, United States. PlanBridge is distributed for macOS and Linux.
History
Founded in 2025 and based in Denver, Colorado. The company published product blog posts through 2026, launched ContextBot (announced March 2026) and retired it in May 2026, made PlanBridge publicly available, and opened a waitlist for PatchWave.
Compiled by commissioned research from 8 cited public sources — announcements, filings, and press listed under research sources below.
Key figures
latest reportedCompany-reported or press-reported figures, each dated to when it was claimed — not independently audited.
Timeline · 3
launches, deals, and filingsContextBot was retired in May 2026 and is no longer available; the company points users to its current projects.
PlanBridge, a local-first tool that opens AI-generated plans in a browser for inline feedback before the agent writes code, is listed as open source and available now, with installation for macOS and Linux and support for Claude Code and Codex.
ContextBridge announced ContextBot, which examined a team's pull requests and commits weekly, extracted conventions, and opened reviewable pull requests updating context files such as CLAUDE.md and AGENTS.md.
Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.
▸Research sources · 8
primary sources listed
- ContextBridgecontextbridge.ai · web
8 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does ContextBridge do?
- ContextBridge builds AI-native developer tools for steering coding agents and automating dependency updates.
- Who founded ContextBridge?
- ContextBridge was founded by Donnie Flood.
- Who are ContextBridge's investors?
- ContextBridge's investors include Range VC.