Your Nylas sandbox is ready — here's your fastest path to a working call
You're set up. Here's how to make your first API call in under 5 minutes.
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You're set up. Here's how to make your first API call in under 5 minutes. You're in. Your sandbox application is live and you have up to 5 connected accounts to experiment with — no credit card, no timer. Before you dive in, here's the fastest path from zero to a working API call. Using an AI coding assistant? Add Nylas Skills to give Claude Code, Cursor, Codex, or any compatible agent current Nylas API context — this is the fastest way to get productive if you're building with an AI assistant: # For Claude Code (one-command install with skills + slash commands) /plugin marketplace add nylas/skills # For Cursor, Codex, and 30+ other agents npx skills add nylas/skills Option A: Nylas CLI (recommended for developers) Already have your API key from the dashboard? The CLI gets you to your first call in seconds: # Install the CLI curl -fsSL https://d5hYdz04.na1.hubspotlinks.com/Ctc/Y+113/d5hYdz04/MWRnCrfcYV0Mk5phlsyp9_W5n2k0f5TLpXpN4KxWMT3lcq-W7Y8-PT6lZ3kFW8NGyN87f6C4mW67H1t996wXdsN45L98b9Mn_zW8G1y8T7gw3C0W4pTmrw11K-47W1-FxsB1qK_dGV1Rv7P4V5N6VW1Z8hSF48dRtHW1rJF8157zP0BV5YmKq3bCLBtW1CGm7H9hGWyYW4m3ZVZ2SsymWW8qYyFG9kTLF1W1Tp_-q8vfkn0W2z68gp2GBc9zW8MPyJC714XJKVZ_TDh3B60r9W5ncsl97QhFWBN6_YyH0QTGbgW85XDyq66fDbBW5_jl9h8KYb6mW88nX_270Z-lLVYCb5g24Gj9MW4jNL5W3xBPfJW2cYKyk1GsQKYW55N3HD65Pttdf3CXQR-04 | bash # Log in with your API key nylas init --[apikey] # Try it nylas email list Option B: Dashboard quickstart If you prefer a browser-based walkthrough: - Log in at dashboard-v3.nylas.com (https://d5hYdz04.na1.hubspotlinks.com/Ctc/Y+113/d5hYdz04/MWRnCrfcYV0Mk5phlsyp9_W5n2k0f5TLpXpN4KxWMz3lcq-W7lCdLW6lZ3l_W2SSTS080yDJQN8KvgRCY67lKVZYL0K58CR_mW40-VR_4byV84W578BPc5Jk6TVW5rBwvV6cD7t0W8HfVZB17XG5YW48wXH84zfBnmN7BWwC0t2W3wW5cYG5q3lrcb9W6MbZ7p2bTFBFN1pr6Xs5fBKsVZqjX94VkL9yVGFDG42ZDvjCW1RwP9G5DKMstW6XfJy65QfPBhW52gZD57qzy8gW5zwhM766thDqW49y0xT68FGfKW4YXhH83ccCzBW4m-RM-7RwLCLW4PXBsr1d48SbW4hTjKF6N3nkpW7Hb4lV2cRGbcf1HcRyb04 ) - Open your sandbox app → API Keys → Generate new key - Go to Grants → Add Account and connect your email - Copy your grant ID and fire your first curl request A few things to know about the sandbox - Sandbox connectors are pre-configured — you can't add custom Google/Microsoft OAuth apps here. That comes when you create a Development or Production app. - You're limited to 5 connected accounts (grants) — plenty for testing. - All scopes are enabled by default in sandbox connectors. You can deselect the ones you don't need — for example, if you're building a calendar-only integration, there's no reason to request email scopes. - Data residency is set at app creation and can't be changed, so pick the right region now if you're planning a production deployment. View the 'Getting Started' Guide (https://d5hYdz04.na1.hubspotlinks.com/Ctc/Y+113/d5hYdz04/MWRnCrfcYV0Mk5phlsyp9_W5n2k0f5TLpXpN4KxWN83lcq-W8wLKSR6lZ3p9W1Z4KMJ8vsmXQW4kfPL24ZmtJ4W6Gz2fS79NVc7W8cLtVP3yr6MFW2W_1Vq3qKBVkVjNKz19d0xz7N8sT_M64F_bdW2Xmy8L5kgRgfW5_QXxb8bVcYFW8mx4Rn7TPSQQW1SzxHY323VT8Vxh8Hd5pstfZW4wGK2-7BLcSfW3mW8jp2X_KmKW3K0-cS2R71MFW4b0zzQ6s7c5KW9gbcR25Y7JsrW6wclPF7J4k3yW2H8jX33jQ4GsW35FfsM11hJy1W71rR6k31dVSZW86XW54234YMNW7nMKlj7sS1CsV-vqdv5tTp-2W28PMhm2q9kBwN8cL9SsxwLvdW4VNFvs3Nb3SdVWkR-F2xGqTff8Wl72M04 ) P.S. Nylas is now native in the coding agents you're already using. The Nylas CLI, Nylas skill, and Claude Code plugin are all live. One command connects whatever stack you're on to the full Nylas API. Read the 'get started' doc. (https://d5hYdz04.na1.hubspotlinks.com/Ctc/Y+113/d5hYdz04/MWRnCrfcYV0Mk5phlsyp9_W5n2k0f5TLpXpN4KxWN83lcq-W8wLKSR6lZ3kKW2RNw-X6dgh4SW1N3fT72kGGhNW1GFsZW6-45M-W15Hyqc19bntzW4n6Cnm4JX7ZMW3tsb555M_PyXN4ltgkGFt4bDW5GhS226mYWjjW8yc9Lx132VS3W842-DB6zkBxqW1M5tS32yWGXXW6RHbdt5Lqd8BVhMh6q12WxdSW8RdRzx5Z0pCtW5kp4pV2THSQ0W2pQ3Hg9985nbN6b99ZLy3FRyW6J-ZRn74CD0qW3-MVlb1RJ-DTW5vRHY24k4vx7MHmfqQrJ99CV-wMZ18wB_mxW4x2jBC77mTMnW10Y-6t88rJ42N1f1zB32_dS_W5vqYKc4FQJJHW8kwTl53mNmpgN4y_4q8JJkp8f8CV5Hd04 ) LinkedIn (https://d5hYdz04.na1.hubspotlinks.com/Ctc/Y+113/d5hYdz04/MWRnCrfcYV0Mk5phlsyp9_W5n2k0f5TLpXpN4KxWMT3lcq-W7Y8-PT6lZ3lzVtXRFv65ZX8RW5Rskd66WqP2tW8zYHDp4XtH59W1rvyv78XhC3-W90Rkz31XKxpHW4mv6QM8j3f68W6VVLnp2TTH-gW4zY-4M4_BNVVW6n6sJ78ZqYpnW3xHvHb6JvFmhW4BR72V75qj1gW7lxRQD6LbNVDVfclF89dsKfTW5-GJTq1660JhW6c9CYf5mmX6sW34lXsV1FH2mnW8GzyKC4lZFCxW2pkfGJ2KXbwpW3RFdkv4CGrdsW3WP3bZ9lkHQtW2jlqVk5MCW0GW1F1ycZ82N4_zW7sdL1k6MsgXBW6dbjL-34M-7hVYPmjL2rr-rMW507bJt1-_gsyf33_qsj04 ) X (https://d5hYdz04.na1.hubspotlinks.com/Ctc/Y+113/d5hYdz04/MWRnCrfcYV0Mk5phlsyp9_W5n2k0f5TLpXpN4KxWMz3lcq-W7lCdLW6lZ3kJW45zSqL8RcsXZW2mHp9g4w5KlvW5TSZn0208YtvVypxMR143KRhVRq0ZR3NgmxDW5xwFry2LRYcwVJpJdd95Pn78V-1Kdk8gmGr1W47r6Py1htmY2W3XND6d3wKMdHW95VL3K1K66c6W2Drfpt7tGs5DW35FJwP8S_Cn_W8bDcsK8G7DpxN5h1zvtVdyzLW57fjtG53v_dYW4MKR444Mm5P5W8YqCZR7JprrSW3yd7xF5VJp_yN1tS0wScs8SwW63lNyj8MgnNqW73sX6j27NFT6W57xxvm7V1kSgW3WPTxW1YS1fZf64dJZP04 ) YouTube (https://d5hYdz04.na1.hubspotlinks.com/Ctc/Y+113/d5hYdz04/MWRnCrfcYV0Mk5phlsyp9_W5n2k0f5TLpXpN4KxWMz3lcq-W7lCdLW6lZ3nXW838f494JzFTFW8FCtV_1Y8CGDW3glHsN2_rBg_N6df-y7G7tGTV66FyH3fHZXhW17kGGD4m1T0RW2lGqsp7mJ-l3W5rzhwp69BFqMW3LZk1g7hgXFSW21594W99M0q1W3Rc5vj3PgCJ_N6JZtmyqm3zXW5vmvYf5xKR3MW1WQVtW4WJB2WW86NJpZ1xk0SXW4sPPd99bVzblW8jFXsJ4Hv_YkW3sBghW7zTwTKW3GHClK5RjpTZW14Z2wd5X0FX3W6Vqv3q5_4ybGW1PTLpr1Ys2xgW86jJ561JhKC-W4sWJqL6WXp9rf7wsYfP04 ) github (https://d5hYdz04.na1.hubspotlinks.com/Ctc/Y+113/d5hYdz04/MWRnCrfcYV0Mk5phlsyp9_W5n2k0f5TLpXpN4KxWMz3lcq-W7lCdLW6lZ3nHW8nppLk1mlNcrW5JHgPn8qXXb5W4kBbGp2XxVBXW89X7G17FdZK5W25hPJf20c5Q7W63fcQm8Kd0lTW3JR63D4vV9wzW8BKKZG1Gq8ryW4kplPJ4-NrtYW2rq1_b6GdGzYW7p6Zfk67w0-SW6HBMYr5Ljj7WW3nlxyG3CyV-qW7vWTkj6CZWt3W5tND2v8YcjNZW5R45Tv6KQfjVW5nZNks4tk9jFW9gzcWJ4X_w2nW7w3sHp79H7rKVmWd8v7TjTzvW7r-K9N3LS6t0W2V_6bm4k87FgV5fw4b4WFKpLW92bgr37_CpVjf1zkzzx04 ) Nylas, 2100 Geng Rd. #210, Palo Alto, CA 94303, USA Unsubscribe (https://hs-45023718.s.hubspotemail.net/hs/preferences-center/en/direct?data=W2nXS-N30h-SfW3zfnLM2vY-gsW4tCHQM4cLYTYW1QbmC445N07_W4t6VhW1L6_sSW1Zrk4V2t2vNdW2Pn8s61Nh8rFW4mGp-Y2szfnyW3jgpTq3QV-PcW3BNg9W3bjgGQW1W-VJb32y7k7W3g1g8j231TFTW2-w1hp2TwCY2W1LfcPp1BqpwZW1ShxqH4kkHQVW3z3Qcf2YFKt5W4fr5-01Z0Tf-W1Nt9GD1ShxwnW217XNF2FMyM9W2WxfqW34wdHrW2CFqJ24p9nHBW4cSMyC233W6QW4mbPcB3gmZkLW3GXGkJ327Xn6W4fDYcT1Zq45bW4pBq5s2WznJDW3gy5kd257Z7PW2p5t-f30KVgVW1NgJNb45pQHSW4px3YV3D-N_RW4hmxnm3P8m66W2-m_Jv2zG56_W4ksg0J3SXRdsW4fft9W4tpt73W2MxdHL4tnZpbW2HC1Pv4t7hCmW4p84s62B2lWVW4mksC043YfZFW3QNJLt49MyFzW2YrSHC2CNws2W1Xsk4_1B9yCgW4fyHnB3z3PMqW2HZClB34jrLtW2qDtM74pK54zW4cHG0N2PMzpyW2KFjPd3jqDFlW3BWlfh20Zy2tW3VyJgv1-ZK-xW3yWCjM3F5WT6W216K4D2nYH3dW2RkSqv43DJDLW2C-mbR4cy2kCW2sBbDT3T5vC8W2YwCS44cy49sW2TQ4-t1LxKfRW2RV0Gv3ZSx8xW346sxg41pTfbW2KlvXJ4p5BNTW2MF3MJ3_JQBYW1NlYDH3XR5KgW2Wv-9k4mbP_HW3C65Mx3D_G6mW3SQJ4j2vQ1Gsf3M9mc704&_hsenc=p2ANqtz-_NtwtRMeXEOB0r--oUzARopM0KPGlk83_f4IWXDJMUI153F3Lwx3hY0eIVAHXbRm8gUCUq6dhhpQkexISAhOvMmHwiHA6doLN5n6DjeAHxFHIqKjmcYFp84aKiCeKQ2jIxfM0-&_hsmi=422471540 ) Manage preferences (https://hs-45023718.s.hubspotemail.net/hs/preferences-center/en/page?data=W2nXS-N30h-SfW3zfnLM2vY-gsW4tCHQM4cLYTYW1QbmC445N07_W4t6VhW1L6_sSW1Zrk4V2t2vNdW2Pn8s61Nh8rFW4mGp-Y2szfnyW3jgpTq3QV-PcW3BNg9W3bjgGQW1W-VJb32y7k7W3g1g8j231TFTW2-w1hp2TwCY2W1LfcPp1BqpwZW1ShxqH4kkHQVW3z3Qcf2YFKt5W4fr5-01Z0Tf-W1Nt9GD1ShxwnW217XNF2FMyM9W2WxfqW34wdHrW2CFqJ24p9nHBW4cSMyC233W6QW4mbPcB3gmZkLW3GXGkJ327Xn6W4fDYcT1Zq45bW4pBq5s2WznJDW3gy5kd257Z7PW2p5t-f30KVgVW1NgJNb45pQHSW4px3YV3D-N_RW4hmxnm3P8m66W2-m_Jv2zG56_W4ksg0J3SXRdsW4fft9W4tpt73W2MxdHL4tnZpbW2HC1Pv4t7hCmW4p84s62B2lWVW4mksC043YfZFW3QNJLt49MyFzW2YrSHC2CNws2W1Xsk4_1B9yCgW4fyHnB3z3PMqW2HZClB34jrLtW2qDtM74pK54zW4cHG0N2PMzpyW2KFjPd3jqDFlW3BWlfh20Zy2tW3VyJgv1-ZK-xW3yWCjM3F5WT6W216K4D2nYH3dW2RkSqv43DJDLW2C-mbR4cy2kCW2sBbDT3T5vC8W2YwCS44cy49sW2TQ4-t1LxKfRW2RV0Gv3ZSx8xW346sxg41pTfbW2KlvXJ4p5BNTW2MF3MJ3_JQBYW1NlYDH3XR5KgW2Wv-9k4mbP_HW3C65Mx3D_G6mW3SQJ4j2vQ1Gsf3M9mc704&_hsenc=p2ANqtz-_NtwtRMeXEOB0r--oUzARopM0KPGlk83_f4IWXDJMUI153F3Lwx3hY0eIVAHXbRm8gUCUq6dhhpQkexISAhOvMmHwiHA6doLN5n6DjeAHxFHIqKjmcYFp84aKiCeKQ2jIxfM0-&_hsmi=422471540 )
- Accession
- nse/nylas/2026-09-09/1008
- From
- Joel Garcia · tips@nylas.com
- Sent
- 9 September 2026 · 14:00 UTC
