API Reference

The API is live at api.otherfunc.com.

Endpoints

GET  /                              # Health check (no auth)
GET  /api/languages                 # List supported languages (no auth)
POST /api/run                       # Execute ad-hoc code (API key required)

POST   /api/functions               # Create a saved function
GET    /api/functions               # List your functions
GET    /api/functions/:id           # Get function details
PUT    /api/functions/:id           # Update a function
DELETE /api/functions/:id           # Delete a function
POST   /api/run/:id                 # Execute a saved function
POST   /api/functions/:id/rollback  # Rollback to a prior version
GET    /api/usage                    # Check rate limit usage (API key required)

PUT    /api/functions/:id/secrets/:name  # Set a secret (API key required)
DELETE /api/functions/:id/secrets/:name  # Delete a secret (API key required)
GET    /api/functions/:id/secrets        # List secret names only (API key required)

GET  /fn/:slug                      # Public endpoint (no auth)

Execute Code

# Run Forth code
curl -X POST https://api.otherfunc.com/api/run \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"language":"forth","code":"3 4 + .","input":""}'

# Response:
# {"output":"7 ","stats":{"instructions_executed":2,"execution_time_ms":0.0}}

# Run Brainfuck (Hello World)
curl -X POST https://api.otherfunc.com/api/run \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"language":"brainfuck","code":"++++++++[>++++[>++>+++>+++>+<<<<-]>+>+>->>+[<]<-]>>.>---.+++++++..+++.","input":""}'

# Run APL
curl -X POST https://api.otherfunc.com/api/run \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"language":"apl","code":"+/iota 100","input":""}'

# Run Lisp
curl -X POST https://api.otherfunc.com/api/run \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"language":"lisp","code":"(define (fact n) (if (<= n 1) 1 (* n (fact (- n 1))))) (fact 10)","input":""}'

# Run BASIC
curl -X POST https://api.otherfunc.com/api/run \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"language":"basic","code":"10 FOR I = 1 TO 5\n20 PRINT I * I\n30 NEXT I","input":""}'

Saved Functions

# Create a function
curl -X POST https://api.otherfunc.com/api/functions \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"slug":"add-numbers","language":"forth","name":"Add Numbers","description":"Adds 3 and 4","code":"3 4 + .","is_published":true}'

# Invoke it publicly (no auth needed)
curl https://api.otherfunc.com/fn/add-numbers

Secrets

Per-function write-only environment variables for storing API keys, tokens, and other sensitive values. Secret values are never returned by the API; only names are listed. Secrets are automatically loaded when a saved function is executed.

Constraints: Name must be 1–64 characters (alphanumeric and underscore only). Value is capped at 4 KB.

# Set a secret
curl -X PUT https://api.otherfunc.com/api/functions/FUNC_ID/secrets/MY_KEY \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"value":"secret-value-here"}'

# List secret names (values are never returned)
curl https://api.otherfunc.com/api/functions/FUNC_ID/secrets \
  -H "Authorization: Bearer YOUR_API_KEY"

# Response:
# {"secrets":["MY_KEY","OTHER_KEY"]}

# Delete a secret
curl -X DELETE https://api.otherfunc.com/api/functions/FUNC_ID/secrets/MY_KEY \
  -H "Authorization: Bearer YOUR_API_KEY"

Accessing secrets from code

Forth: s" MY_KEY" env — pushes the secret value as a string.
Lisp: (env "MY_KEY") — returns the secret value as a string.
BASIC: ENV$("MY_KEY") — returns the secret value as a string.

KV Storage

Per-function persistent key-value storage. Only available for saved functions (not ad-hoc /api/run). Data is scoped per function — each function has its own isolated namespace.

Constraints: Keys must be 1–256 printable ASCII characters (no colons). Values are capped at 64 KB. Only available for saved functions.

Check Usage

Check how many requests you've used today against your rate limit. This endpoint does not count against your limit.

# Check current usage
curl https://api.otherfunc.com/api/usage \
  -H "Authorization: Bearer YOUR_API_KEY"

# Response:
# {"requests_used":42,"daily_limit":1000,"requests_remaining":958,"resets_at_ms":1739145600000}

Error Handling

Errors return {"error":"..."} with appropriate HTTP status codes. User code errors (syntax, runtime, instruction limit) return 422 with an Execution error: prefix. Platform errors (bad request, unauthorized) return 400 or 401.