Cq – Stack Overflow for AI coding agents
Hi all, I'm Peter at Staff Engineer and Mozilla.ai and I want to share our idea for a standard for shared agent learning, conceptually it seemed to fit easily in my mental model as a Stack Overflow for agents.The project is trying to see if we can get agents (any agent, any model) to propose 'knowledge units' (KUs) as a standard schema based on gotchas it runs into during use, and proactively query for existing KUs in order to get insights which it can verify and confirm if they prove useful.It's currently very much a PoC with a more lofty proposal in the repo, we're trying to iterate from local use, up to team level, and ideally eventually have some kind of public commons.At the team level (see our Docker compose example) and your coding agent configured to point to the API address for the team to send KUs there instead - where they can be reviewed by a human in the loop (HITL) via a UI in the browser, before they're allowed to appear in queries by other agents in your team.We're learning a lot even from using it locally on various repos internally, not just in the kind of KUs it generates, but also from a UX perspective on trying to make it easy to get using it and approving KUs in the browser dashboard. There are bigger, complex problems to solve in the future around data privacy, governance etc. but for now we're super focussed on getting something that people can see some value from really quickly in their day-to-day.Tech stack:* Skills - markdown* Local Python MCP server (FastMCP) - managing a local SQLite knowledge store* Optional team API (FastAPI, Docker) for sharing knowledge across an org* Installs as a Claude Code plugin or OpenCode MCP server* Local-first by default; your knowledge stays on your machine unless you opt into team sync by setting the address in config* OSS (Apache 2.0 licensed)Here's an example of something which seemed straight forward, when asking Claude Code to write a GitHub action it often
FL score
out of 100
Verdict
high confidence
Competition
7
competitors found, emerging market, funded players
Trend
No signal yet
A human-curated knowledge base for AI coding agents to overcome 'gotchas' and improve reliability, starting local-first for teams.
The pain
The gap
Build angle
Strengths
- Addresses a significant and growing pain point in the AI agent development lifecycle (accuracy, trust, security).
- The 'human in the loop' feature offers a strong differentiator in a crowded market.
- Market is rapidly growing, indicating high future demand for effective AI agent solutions.
- Clear payment signals for solutions that improve AI agent reliability and performance.
- Initial PoC is already yielding insights, suggesting early validation.
Risks
- Highly competitive market with several funded and direct competitors.
- Complexity of scaling to 'any agent, any model' and managing data privacy/governance for a public commons.
- Assumption that developers will consistently contribute and curate KUs.
- Potential for slow adoption if integration with diverse agent ecosystems is cumbersome.
- The scope seems larger than a typical solo-builder micro-SaaS, potentially requiring more resources.
Next steps
- Gather feedback from external teams using the Docker Compose example to validate the perceived value and usability of the human-in-the-loop KU review process.
- Conduct customer interviews to understand specific 'gotchas' and workflows for agents within target niches.
- Define a super narrow MVP targeting a single agent type or framework to simplify initial integration and demonstrate clear value.
- Explore pricing models directly with potential users to confirm willingness to pay for the human-curated knowledge base.
- Develop a clear roadmap for scaling from local/team to a broader ecosystem, addressing privacy and governance early.
Fly Labs Method
Is the pain real, is there a gap, is it the right time, can one person build it.
- Problem clarity
- 25
- Solution gap
- 14
- Willingness to pay
- 19
- Buildability
- 9
A promising idea addressing real pain in the rapidly growing AI agent market, with a strong angle focusing on human-in-the-loop trust and local-first privacy. However, the competition is crowded, and the complexity suggests it might be a larger undertaking than a typical solo builder micro-SaaS.
Value Equation
Dream outcome and how likely it feels, against the time and effort it costs.
This idea has high market viability and a compelling value proposition, riding a strong market growth wave, but needs to solidify its differentiation and acknowledge the long-term resource investment for scalability.
One-Person Business
Curiosity pull, identity fit, and a path from free value to paid for a solo creator.
A high-potential idea with clear problem clarity and monetization avenues, but its inherent complexity and existing team involvement reduce its suitability as a simple, solo-run micro-SaaS.
Viral Frameworks
Hook strength, shareability, and how cheaply it can be tested.
This idea presents a clear value proposition for a specific, reachable audience and a viable business model. Initial validation is underway, but key assumptions about user behavior and market preference need further testing.
Builder Lens
Evidence the problem exists, timing, defensibility, and a model that fits on a napkin.
A strong idea with clear demand and a path to a narrow MVP. The team's current observations are promising, and the long-term market trend supports its future necessity.
Why this verdict
Five lenses, one composite. How scoring works
The angle
This weekend
- Gather feedback from external teams using the Docker Compose example to validate the perceived value and usability of the human-in-the-loop KU review process.
- Conduct customer interviews to understand specific 'gotchas' and workflows for agents within target niches.
- Define a super narrow MVP targeting a single agent type or framework to simplify initial integration and demonstrate clear value.
- Explore pricing models directly with potential users to confirm willingness to pay for the human-curated knowledge base.
- Develop a clear roadmap for scaling from local/team to a broader ecosystem, addressing privacy and governance early.
Who is already there, emerging market
- Context OverflowVisit
A Q&A knowledge sharing app for AI agents that lets them automatically share useful knowledge and draw from a growing community memory.
Pricing: Not explicitly stated, but marketed as 'simple one-line onboarding for any agent' and focuses on community memory.
An open-source hub for builders, providing a vibrant, collaborative ecosystem centered around open-source models and tools, often referred to as the 'GitHub of machine learning'.
Pricing: Free access to over a million pre-trained models.
The world's largest data science community, enabling users to find and publish datasets, explore and build models, and enter competitions to solve data science challenges.
Pricing: Free to use; monetized through competitions and premium features for businesses.
A community for developers building with OpenAI's API platform to discuss issues, share ideas, and troubleshoot.
Pricing: Free to participate, costs associated with OpenAI API usage.
A vibrant online community dedicated to delving into the intricacies of data science, artificial intelligence, and machine learning through a question-and-answer format.
Pricing: Free.
- Agentarium.ccVisit
A platform working like a Stack Overflow for agents, where they can look up exact errors, stack traces, framework/runtime setups, solve bugs, and get solutions fed back automatically.
Pricing: Free, privacy-first.
- StackAgents.orgVisit
A site designed as a public incident database for coding errors, structured for coding agents to search directly for exact error messages, stack traces, framework/runtime combinations, and previously solved incidents with working fixes.
Pricing: Not explicitly stated, but presented as a community resource.
What they charge
Recent news
Show HN: Cq – Stack Overflow for AI coding agents
Hacker News, March 23 2026
StackOverflow-style site for coding agents : r/Agentic_AI_For_Devs
Reddit, March 19 2026
StackOverflow-style site for coding agents : r/PromptEngineering
Reddit, March 23 2026
When AI Thinks Together: The Rise of Collective Intelligence in AI Agent Systems
Medium, March 03 2026
From Stack Overflow to AI Agents: Why I Stopped Fighting and Started Orchestrating in 2025
Medium, January 11 2026
Market signals
The market for AI agents is rapidly growing and is considered a major technological breakthrough, with multi-agent systems projected to generate $53 billion in revenue by 2030, a significant increase from $5.7 billion in 2024. While there's high adoption of AI tools by developers for productivity gains, concerns around accuracy, privacy, and security of AI agents remain high. There's a clear trend towards multi-agent systems and platforms that enable collaboration and knowledge sharing among agents to overcome the limitations of single AI models.
What frustrates people
- Security nightmare scenarios and potential for engineering backdoors into 'accepted answers' in shared knowledge bases for AI agents.
- Lack of trust delegation that preserves the delegator's subjective trust perspective in decentralized networks for AI agents.
- Difficulty in knowing if a higher price for an AI agent platform reflects real operational value or unnecessary overhead.
- Latency introduced when AI agents need to wait for other agents to respond to questions in a decentralized model.
- The inherent unpredictability of LLMs makes safety engineering a difficult problem for shared agent knowledge.
Semble – Code search for agents that uses 98% fewer tokens than grep
Hey HN! We (Stephan and Thomas) recently open-sourced Semble. We kept running into the same problem while using Claude Code on large codebases: when the agent can't find something directly, it falls back to grep, reading full files or launching subagents. This uses a lot of tokens, and often still misses the relevant code. There are existing tools for this, but they were either too slow to index on demand, needed API keys, or had poor retrieval quality.Semble is our solution for this. It combines static Model2Vec embeddings (using our latest static model: potion-code-16M) with BM25, fused via RRF and reranked with code-aware signals. Everything runs on CPU since there's no transformers involved. On our benchmark of ~1250 query/document pairs across 63 repos and 19 languages, it uses 98% fewer tokens than grep+read and reaches 99% of the retrieval quality of a 137M-parameter code-trained transformer, while being ~200x faster.Main features:- Token-efficient: 98% fewer tokens than grep+read- Fast: ~250ms to index a typical repo on our benchmark, ~1.5ms per query on CPU (very large repos may take longer)- Accurate: 0.854 NDCG@10, 99% of the best transformer setup we tested- MCP server: drop-in for Claude Code, Cursor, Codex, OpenCode- Zero config: no API keys, no GPU, no external servicesInstall in Claude Code with: claude mcp add semble -s user -- uvx --from "semble[mcp]" sembleOr check our README for other installation instructions, benchmarks, and methodology:Semble: https://github.com/MinishLab/sembleBenchmarks: https://github.com/MinishLab/semble/tree/main/benchmarksModel: https://huggingface.co/minishlab/potion-code-16MLet us know if you have any feedback or questions!
AI
Postgres extension for BM25 relevance-ranked full-text search
Last summer we faced a conundrum at my company, Tiger Data, a Postgres cloud vendor whose main business is in timeseries data. We were trying to grow our business towards emerging AI-centric workloads and wanted to provide a state-of-the-art hybrid search stack in Postgres. We'd already built pgvectorscale in house with the goal of scaling semantic search beyond pgvector's main memory limitations. We just needed a scalable ranked keyword search solution too.The problem: core Postgres doesn't provide this; the leading Postgres BM25 extension, ParadeDB, is guarded behind AGPL; developing our own extension appeared daunting. We'd need a small team of sharp engineers and 6-12 months, I figured. And we'd probably still fall short of the performance of a mature system like Parade/Tantivy.Or would we? I'd be experimenting long enough with AI-boosted development at that point to realize that with the latest tools (Claude Code + Opus) and an experienced hand (I've been working in database systems internals for 25 years now), the old time estimates pretty much go out the window.I told our CTO I thought I could solo the project in one quarter. This raised some eyebrows.It did take a little more time than that (two quarters), and we got some real help from the community (amazing!) after open-sourcing the pre-release. But I'm thrilled/exhausted today to share that pg_textsearch v1.0 is freely available via open source (Postgres license), on Tiger Data cloud, and hopefully soon, a hyperscalar near you:https://github.com/timescale/pg_textsearchIn the blog post accompanying the release, I overview the architecture and present benchmark results using MS-MARCO. To my surprise, we were not only able to meet Parade/Tantivy's query performance, but exceed it substantially, measuring a 4.7x advantage on query throughput at scale:https://www.tigerdata.com/blog/pg-textsearch-bm25-fu
AI
Consus (YC F24) – LLM gateway for companies handling sensitive data
Hey Hacker News! I'm Eric, the founder of Consus. We route all AI requests to ITAR restricted and controlled unclassified information (CUI) compliant infrastructure. Consus itself satisfies ITAR restrictions, and we recently completed our FedRAMP equivalency audit against the 410 FedRAMP High controls. FedRAMP High is the U.S. government’s strictest security baseline for cloud services handling sensitive unclassified data. A breach of this data could cause severe or catastrophic harm. Achieving FedRAMP equivalency, or authorization, is required before processing CUI information.Demo: https://youtu.be/6MYxJe6P4oYAerospace and defense is experiencing rapid growth. Unfortunately, most companies are struggling to use AI because of necessary data protections & compliance risk. These companies can move even faster if they could use the AI tools that most other industries take for granted.I spent most of my career prior to Consus in aerospace & defense. I launched national security payloads at SpaceX, and was an early employee at Castelion. I’ve watched first hand how compliance red-tape makes it difficult for companies to adopt new technologies and trust vendors that touch their sensitive data. For example, I worked with a satellite manufacturer that doesn’t allow any AI tools, even for non-sensitive work.Even as AI has become extremely useful over the past 9-12 months, I was surprised by how many aerospace & defense companies refused to touch it. They could see how it could be helpful, but they were scared about model providers training on their data, violating an ITAR rule, or risk losing new business because of a failed cyber assessment. These are all rational fears.There were a lot of ways to solve some/all of these problems, but we focused on building a compliant AI inference layer that can "plug" into any AI tool or workflow. Just as OpenRouter integrates with most tools, Consus can connect to tools like ChatGPT or Clau
AI
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