Do we need MCPs? Reverse-engineered Slack and Linear API for Evals & RL
Details
- External ID
- 46148214
- Source
- HN
- Company
- —
- Product
- Do we need MCPs? Reverse-engineered Slack and Linear API for Evals & RL
- Website domain
- agentdiff.dev
- Launched
- Dec. 4, 2025
- Cohort
- —
- Upvotes
- 11
- Upvotes percentile
- 0.5286259541984732
- Tags
- —
- Fetched at
- Sept. 7, 2026, 9:25 p.m.
- Updated at
- Sept. 7, 2026, 9:25 p.m.
Enrichment
- Theme
- developer tools and programming utilities
- Vertical
- Horizontal
- Function
- Observability & eval
- Audience
- Developer
- AI stance
- AI-native
- Project type
- Hobby / open-source project
- Normalized one-liner
- mcp evaluation with api reverse engineering
- Manually corrected
- False
Could you build this?
Partial Building mock environments from reverse-engineered Slack and Linear endpoints for AI RL/evals requires reverse-engineering private/internal client APIs and building accurate stateful mocking engines.
What it would actually take: Requires sniffing and reverse-engineering the private web/desktop client API protocols of Slack and Linear, capturing state transitions, and creating an in-memory mock backend that faithfully mimics rate limits, websockets, and undocumented side effects. Developing reliable RL environment harnesses (Gym/PettingZoo style) on top of these reverse-engineered APIs requires strong reverse engineering and test-fixture simulation expertise.
Discussion
4 comments analyzed.
Competitors mentioned: Gmail API, Slack API, Linear API, MCPs (Model Context Protocol)
Concerns raised: Rate limits blocking evals on 3rd party APIs, Difficulty running evals/training on integrations at scale
Competitors
Other products that read as similar to this one — 1475 launches clear the similarity bar, closest 8 shown.
Attention rank: #684 of 1476 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 36 days after the earliest competitor.
- Mcptoon · hn · 2026-08-11 · 73 upvotes · similarity 0.57
- mcpc · hn · 2026-01-06 · 50 upvotes · similarity 0.54
- Smart Scan · hn · 2025-11-24 · 15 upvotes · similarity 0.52
- Flux, A Python-like language in Rust to solve ML orchestration overhead · hn · 2026-01-24 · 5 upvotes · similarity 0.52
- JSLike, a CSP-Safe Interpreter for JS, TS, JSX, TSX in JS · hn · 2026-05-09 · 6 upvotes · similarity 0.52
- interp-rpc · github · 2026-09-24 · 80 upvotes · similarity 0.51
- slacklet · github · 2026-09-17 · 9 upvotes · similarity 0.51
- MCP-stama · hn · 2026-08-13 · 73 upvotes · similarity 0.51
Other launches for this product
- No other launches for this product.
Same idea, different domain
Nobody's really built a observability & eval tool for Media & entertainment yet.