Bug type

Regression (worked before, now fails)

Beta release blocker

No

Summary

After upgrading from OpenClaw 2026.4.2 to 2026.4.15, configuring anthropic/claude-opus-4-7 as agent primary model causes FailoverError: Unknown model on every request. The model falls back to claude-opus-4-6. The model string claude-opus-4-7 exists in the 2026.4.15 codebase as ANTHROPIC_OPUS_47_MODEL_ID and DEFAULT_ANTHROPIC_MODEL, and is accepted by the Anthropic API directly (HTTP 200 via curl).

Steps to reproduce

1. Upgrade OpenClaw: npm update -g openclaw (2026.4.2 -> 2026.4.15)
2. Set agents.defaults.model.primary to anthropic/claude-opus-4-7 in openclaw.json
3. Restart gateway: systemctl --user restart openclaw-gateway
4. Observe gateway log: journalctl --user -u openclaw-gateway | grep opus-4-7
5. Delete ~/.openclaw/agents/main/agent/models.json to force cache regen
6. Restart gateway again
7. Same error persists

Expected behavior

Gateway should accept anthropic/claude-opus-4-7 and route requests to the Anthropic API. The Anthropic API accepts this model string (verified: curl -X POST https://api.anthropic.com/v1/messages -d '{"model":"claude-opus-4-7",...}' returns HTTP 200). claude-opus-4-6 works on the same gateway config.

Actual behavior

Gateway startup: [gateway] startup model warmup failed for anthropic/claude-opus-4-7: Error: Unknown model: anthropic/claude-opus-4-7. Every agent request falls back to opus-4-6 via the fallback chain. Per-agent models.json cache regenerates without an anthropic provider entry (only openai-codex, codex, ollama). The Anthropic plugin shows as "loaded" in openclaw plugins list but does not appear in the gateway's active plugin count at boot ("6 plugins: acpx, browser, device-pair, phone-control, talk-voice, telegram").

OpenClaw version

2026.4.15 (041266a)

Operating system

Ubuntu 24.04 / WSL2 on Windows 11 Pro

Install method

npm global

Model

anthropic/claude-opus-4-7

Provider / routing chain

openclaw gateway -> anthropic API (direct, no proxy)

Additional provider/model setup details

Auth profile in ~/.openclaw/agents/main/agent/auth-profiles.json has anthropic:default with valid API key (opus-4-6 works). No disabledUntil, no usageStats, no cooldowns. WSL2 with NODE_OPTIONS=--dns-result-order=ipv4first in systemd override. Gateway bound to loopback only.

Logs, screenshots, and evidence

Gateway startup log:

[gateway] agent model: anthropic/claude-opus-4-7
[gateway] ready (6 plugins: acpx, browser, device-pair, phone-control, talk-voice, telegram; 7.4s)
[gateway] startup model warmup failed for anthropic/claude-opus-4-7: Error: Unknown model: anthropic/claude-opus-4-7


Model string in 2026.4.15 source:

const ANTHROPIC_OPUS_47_MODEL_ID = "claude-opus-4-7";
const DEFAULT_ANTHROPIC_MODEL = "anthropic/claude-opus-4-7";


Curl verification:

curl -X POST https://api.anthropic.com/v1/messages -H "anthropic-version: 2023-06-01" -d '{"model":"claude-opus-4-7","max_tokens":10,"messages":[{"role":"user","content":"hi"}]}'
HTTP 200 — "model":"claude-opus-4-7"


Per-agent models.json after cache regen:

Providers: [ 'openai-codex', 'codex', 'ollama' ]
// No anthropic provider entry

Impact and severity

Affected: Any user configuring claude-opus-4-7 as primary model on 2026.4.15
Severity: Medium (blocks new model adoption, workaround exists via opus-4-6 fallback)
Frequency: 100% reproducible — every request to opus-4-7 fails
Consequence: Forces fallback to opus-4-6 on every request, preventing use of the newer model. Extra latency from the fallback chain (~1s per request).

Additional information

Suspected root cause: The per-agent models.json cache file regenerates without an anthropic provider block. Only openai-codex, codex, and ollama appear. The gateway resolves opus-4-6 through what appears to be a legacy/hardcoded path (works without being in models.json), but opus-4-7 requires the provider to be registered in the cache. The Anthropic plugin shows "loaded" in openclaw plugins list but something in the provider auto-registration sequence fails to populate the anthropic entry.

Workaround: Revert to anthropic/claude-opus-4-6 as primary model.