Why is the Robinhood MCP returning 429 errors?

The server rate-limits bursts. Agents that fire tool calls in parallel hit 429s quickly; pace calls sequentially and back off on the first 429. Batch-style workloads (many symbols) should expect one-symbol-per-call on the indicator endpoints and plan their pacing accordingly.

Why are my Robinhood MCP filters being ignored?

The server can silently drop filter parameters it does not accept rather than erroring. Always read the filters_applied field back from the response and treat it — not your request — as the truth about what was filtered.

Why do Robinhood MCP 5-minute bars disagree with my other feed?

Five-minute data can run several bars behind real time. In our measurements a naive read was ~5 bars stale, enough to flip the sign of a 25-minute move 28% of the time. Use completed bars only, and never treat the newest 5-minute bar as current price.

Why does the hourly close differ from official prices?

The final (still-forming) hourly bar can differ from consolidated SIP prices by up to ~3.4% in our measurements. If an hourly close feeds a decision, reconstruct the hour from completed 5-minute bars instead of trusting the last h1 print.

Why are all my orders rejected even though the tools connect?

place_equity_order requires an account with agentic trading enabled; every read works and every order is rejected when the account you named is not agentic-enabled. Enable agentic trading on that specific account in the Robinhood app. Also note the documented flow is review_equity_order, explicit confirmation, then place_equity_order — an unattended run with nobody to confirm places nothing by design.

← Setup guide

Robinhood MCP troubleshooting: errors, causes, fixes

Keyed by the exact symptom you're seeing. Every row measured first-hand against the live server; nothing secondhand.

Guides · 5 min read · facts as of August 2026 — Robinhood's surface is theirs to change; verify against their docs

Start here if it's a connection problem: a bare claude mcp add <name> <url> registers a local command, not a remote server — the #1 cause of "can't connect." Use claude mcp add --transport http robinhood-trading <URL>. If it connects but refuses to trade, that has five distinct causes — work through the ordered diagnostic before touching your prompt.

Not sure what a tool is supposed to do in the first place? The full surface is documented in our 53-tool Robinhood MCP reference — categorized, with the measured gotchas inline and a JSON your agent can load.

The error table

Symptom	Cause	Fix
`429` on bursts of tool calls	Server-side rate limiting	Pace calls sequentially; back off on first 429. Plan for one symbol per call on indicator endpoints.
Filters you passed seem ignored	Unaccepted filter params are silently dropped, not errored	Read `filters_applied` back from the response — treat it as the truth, not your request.
5-minute bars lag your other feed	5m data can run ~5 bars behind real time (enough to flip a 25-minute move's sign 28% of the time in our measurement)	Use completed bars only; never treat the newest 5m bar as current price.
Hourly close ≠ official close	The forming h1 bar can differ from consolidated SIP by up to ~3.4%	Reconstruct the hour from completed 5-minute bars when an hourly close feeds a decision.
Indicators missing history on first calls	Server-side warmup — indicators compute from completed bars after the server has seen enough of them	Expect early calls to be thin; retry after the session has bars behind it.
Every order rejected, reads all work	`place_equity_order` requires an agentic-enabled account	Enable agentic trading on the exact account you named, in the Robinhood app.
Order rejected on session tag	Market, stop-market and stop-limit orders are regular-hours only; overnight executes limit only	Tag stops to regular hours; use limit orders for extended sessions. There is no trailing variant — a scheduled agent recomputes its level and sends a plain order (how).
Symbol trades elsewhere but not here	Tradability is per-symbol	Pre-flight with `get_equity_tradability` before building an order.
Buying power looks wrong	`get_accounts` does not return reliable buying power	Route buying-power questions through `get_portfolio`.

The full tool surface (~52 tools) and which ones an equities routine actually calls is on the operator guide. The safety half — account lockdown, order caps, loss halts, the kill switch — is a copy-paste template at guardrails.md.

Everything above was measured against the live server on our own account and is stated as of August 2026. Robinhood's surface is theirs to change — when their docs and this page disagree, trust theirs and tell us. Scores and states only; nothing here is investment advice.