Frank Chen

261 posts

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Frank Chen

Frank Chen

@francchen

Head of Developer Experience @RespanAI (Formerly Keywords AI, YC W24)

San Francisco, CA, USA Katılım Şubat 2023
98 Takip Edilen97 Takipçiler
Frank Chen
Frank Chen@francchen·
@RespanAI Respan is everything you need for AI internal tooling m
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Respan
Respan@RespanAI·
AI observability platforms raised $1B+ to reinvent print debugging for the agent era. Reading traces manually is not a scalable production workflow. We think the stack should catch issues itself. Meet Respan.
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Respan
Respan@RespanAI·
Tracing built for agents in production.
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Frank Chen
Frank Chen@francchen·
Doing a smog check today and realized California really said: “Your car seems fine, but prove it.” Honestly, AI apps need the same energy. Your agent might look fine in demo, but in production you still need to prove: latency isn’t creeping up cost isn’t randomly spiking tool calls aren’t silently failing answers aren’t getting worse after a prompt change The vibe is not “trust me bro, it works", and that’s what we’re building at respan.ai
Frank Chen tweet media
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Hridoy Rehman
Hridoy Rehman@hridoyreh·
📂 SEO ┃ ┣ 📂 Strategy ┃ ┣ 📂 Keyword Research ┃ ┣ 📂 Search Intent ┃ ┣ 📂 Competitor Analysis ┃ ┣ 📂 Keyword Clustering ┃ ┗ 📂 SEO Wins ┃ ┣ 📂 On-page SEO ┃ ┣ 📂 Title ┃ ┣ 📂 Descriptions ┃ ┣ 📂 Header Structure ┃ ┣ 📂 URL Structure ┃ ┣ 📂 Internal Linking ┃ ┣ 📂 Image Optimization ┃ ┗ 📂 Content Optimization ┃ ┣ 📂 Technical_SEO ┃ ┣ 📂 Crawlability ┃ ┣ 📂 Indexing ┃ ┣ 📂 Site Speed ┃ ┣ 📂 Schema Markup ┃ ┣ 📂 Canonical Tags ┃ ┗ 📂 XML Sitemaps ┃ ┣ 📂 Content SEO ┃ ┣ 📂 Blog Content ┃ ┣ 📂 Pillar Pages ┃ ┣ 📂 Topic Clusters ┃ ┣ 📂 Tools Content ┃ ┣ 📂 Evergreen Content ┃ ┣ 📂 Programmatic SEO ┃ ┗ 📂 Content Refresh ┃ ┣ 📂 Off-page SEO ┃ ┣ 📂 Link Building ┃ ┣ 📂 Guest Posting ┃ ┣ 📂 Digital PR ┃ ┣ 📂 Brand Mentions ┃ ┗ 📂 Outreach ┃ ┣ 📂 International SEO ┃ ┣ 📂 Hreflang ┃ ┣ 📂 Multi Language ┃ ┣ 📂 Geo Targeting ┃ ┗ 📂 Localization ┃ ┣ 📂 Analytics ┃ ┣ 📂 Google Analytics ┃ ┣ 📂 Search Console ┃ ┣ 📂 Rank Tracking ┃ ┣ 📂 Traffic Analysis ┃ ┗ 📂 KPI Tracking ┃ ┣ 📂 UX ┃ ┣ 📂 Page Speed UX ┃ ┣ 📂 Mobile Optimization ┃ ┣ 📂 UX Design ┃ ┣ 📂 A/B Testing ┃ ┗ 📂 Conversion Funnels ┃ ┣ 📂 AI SEO ┃ ┣ 📂 Content Optimization ┃ ┣ 📂 NLP Optimization ┃ ┣ 📂 Generative SEO ┃ ┣ 📂 SERP Features ┃ ┗ 📂 LLM Visibility ┃ ┗ 📂 Growth ┣ 📂 Topical Authority ┣ 📂 Content Scaling ┣ 📂 Link Acquisition ┗ 📂 SEO Experiments
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Frank Chen
Frank Chen@francchen·
Working on SEO with claude code now it's so considerate😂
Frank Chen tweet media
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Frank Chen
Frank Chen@francchen·
Interesting. This is also what we support at @RespanAI. Most gateways like OpenRouter use router-style APIs that normalize requests into an OpenAI format. That can change behavior or drop provider-specific features. Respan is different. We provide a true pass-through gateway, so requests, headers, and streaming are forwarded as-is. Agent CLIs behave exactly the same as calling the provider directly. In addition, we also log all calls for observability and debugging. (PS. we also support Codex, Gemini CLI , and OpenCode)
Paweł Huryn@PawelHuryn

Anthropic has quietly shipped third-party inference for Cowork and Code in Claude Desktop. This should work with local models or OpenRouter via LiteLLM proxy. Is it just me?

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Frank Chen
Frank Chen@francchen·
@RespanAI limits are really important guardrails at API level but most gateway providers don't support this.
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Respan
Respan@RespanAI·
Respan Launch Week, Day 5 🚀 Introducing AI Gateway Limits and Alerts. LLM costs can get out of control fast in production, especially as traffic grows across models, API keys, and apps. Now you can set limits directly in Respan AI Gateway: - Alerts via email or Slack - Recurring budgets for LLM usage - Limits by API key or model - Controls for cost, requests, or tokens When a limit is exceeded, you can block the request or send a warning. Built for teams that want to move fast with clear cost controls. Try it today!
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Respan
Respan@RespanAI·
Respan Launch Week, Day 4: Introducing Respan Integrations Most teams still spend days setting up observability. That’s why we invested heavily in Respan Integrations. We support major LLM and agent frameworks like OpenAI, Anthropic, Gemini, LangChain, Vercel AI, and Pydantic AI, with more being added. Run 'npx [at]respan/cli setup' and start tracing in minutes, not days.
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Frank Chen
Frank Chen@francchen·
The cake is 🐐
Hai Ta (YC P26)@HaiTa

@RespanAI team pulling all nighters for their launch week to keep up with demands. Absolutely cracked team everyone lives and works under the same roof. Bullish on these guys

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Respan
Respan@RespanAI·
Respan Launch Week, Day 3: introducing @RespanAI Agent, CLI, and MCP. Three ways to stop doing AI engineering by hand: → Agent: ask it to build an evaluator, fix a prompt, or find the root cause of a bad trace on the platform. → CLI: npx respan@cli setup - auth, framework detection, and tracing in one command. → MCP: plug Respan into Claude Code, Cursor, or anything that speaks MCP. Same data, same access, wherever you work.
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Respan
Respan@RespanAI·
Respan Launch Week, Day 2: Evals Evals are one of the hardest parts of building AI applications. It is not because teams cannot run them. It is because they are hard to structure, hard to compare, and even harder to improve over time. So teams end up guessing. Did this prompt actually get better? Is this model really an improvement? We built Evals in Respan to make this systematic. You define: - what you want to test, such as prompts, models, or configs - the dataset, from production logs or test cases - the evaluators, whether LLM, code, human, or a mix Then you run experiments and compare results side by side. Same inputs. Same evaluation. Clear answers. No more guessing. Start running your first eval.
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Hendrix Liu
Hendrix Liu@HendrixLiu29208·
Respan Launch Week, Day 1: we’re launching Monitors for AI products. AI teams already track the basics in production: - error rate - cost - latency - token usage The problem is not measuring them. The problem is reacting fast enough. A model update can increase error rate. A prompt change can raise cost. Latency can drift over time. Most teams do not catch these problems right away. Monitors turn these metrics into real-time alerts. You set the thresholds that matter, and get notified as soon as something crosses the line. This gives teams a faster way to spot issues and respond before they grow. Activate your first monitor now.
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Frank Chen
Frank Chen@francchen·
| ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ | we believe knowing what your agent did in production means seeing every prompt, tool call, and response with full context |____________| \ (•◡•) / \ / —— | | |_ |
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Frank Chen
Frank Chen@francchen·
Evals are hard, so we built a SCRATCH to solve it.
Hendrix Liu@HendrixLiu29208

The first launch week in @RespanAI's history starts soon. We'll ship a new feature every day from April 20 to 24. This is our biggest product update yet. It will reshape how teams handle AI observability and evaluations. Get ready. Next week is going to be a big one for us!

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