AllTrails for AI agents
AllTrails is a trail directory for hikers, runners, and cyclists, with maps, ratings, and route details for outdoor destinations worldwide. Hikers and trip planners use it to pick a route before heading out. Connect it once through Arc0, and your agent, or Claude, ChatGPT and Cursor, can use it through one MCP endpoint, limited to what each user approved.
What agents do in AllTrails.
Find trails near a location
Search for trails within a bounding area or near a given point, filtered by length or difficulty.
Check trail weather before a trip
Pull the weather overview for a specific trail so a hiker knows conditions before setting out.
Look up trail details by name
Search for a trail by name and return its distance, elevation gain, and rating.
5 AllTrails actions, graded by risk.
Every AllTrails action is tagged read, write or destructive, so one policy covers the whole app and new actions inherit the right default.
read
5Look things up. Allowed by default.
- alltrails.get_trail_detailsGet trail details
- alltrails.search_trails_by_nameSearch trails by name
- alltrails.find_trails_near_locationFind trails near location
- alltrails.find_trails_within_boundsFind trails within bounds
- alltrails.get_trail_weather_overviewGet trail weather overview
write
0Create and change things. Allow, or ask the user first.
- No write actions.
destructive
0Delete, cancel or archive. Ask first, or deny outright.
- No destructive actions.
AllTrails in three steps.
- 01Your users connect AllTrailsThey add their AllTrails no auth on Arc0 Connect, under your brand. It goes straight into the vault.
- 02You set the rulesReads run, and writes like “updates” can wait for the user to approve.
- 03Any agent can actYour agent calls AllTrails through the Arc0 SDK or MCP, and so can Claude, ChatGPT and Cursor. Every call lands on the audit log.
await arc0.policies.set('alltrails', { read: 'allow', write: 'ask', destructive: 'deny', }) # Claude Code: the same connection, one URL $ claude mcp add --transport http arc0 \ https://mcp.arc0.ai/u/u_8f2
How AllTrails connects.
AllTrails needs no credentials. Arc0 still applies your policies and records every call, so public tools get the same controls as private ones.
The same AllTrails connection serves your agent over MCP and your own backend over REST and the proxy, so a user connects once. How Arc0 handles credentials →
- AUTH
- No auth
- CREDENTIALS
- Per-tenant encrypted vault
- MODEL SEES
- Results only, never credentials
- AUDIT LOG
- Every call, on every plan
Use AllTrails from any agent.
ClaudeChatGPTCursor
Codex
VS CodeOpenAI Agents SDKClaude Agent SDK
Vercel AI SDK
Mastra
LangGraph
AllTrails and Arc0, answered.
Can I use AllTrails with Claude, ChatGPT or Cursor?
Yes. Connect AllTrails to Arc0 once, then add your Arc0 MCP URL to Claude, ChatGPT, Cursor, Claude Code or any other remote-MCP client. Each assistant only gets the AllTrails actions you allow.
How do users connect AllTrails?
AllTrails needs no credentials. Arc0 still applies your policies and records every call, so public tools get the same controls as private ones.
Which AllTrails actions can my agent take?
5 in total: 5 read, 0 write and 0 destructive. Your policies decide which of them each agent may call.
Can I make my agent read-only in AllTrails?
Yes. Allow read actions and deny writes in the AllTrails policy. Your agent can still look things up, and any write it attempts is blocked and logged.
Can my own backend call AllTrails too?
Yes. The same AllTrails connection is available over REST and through the Arc0 proxy, so your product and your agent share one connection per user.
Plug AllTrails into your agent.
Your users connect AllTrails once, under your brand. Your agent gets 5 actions behind your policies, with every call on the record.
Free to build · MCP + REST · Audit log on every plan